US 4,067,358 A · Indexing automatic fill-up float valve

Abstract

A valve for repetitively allowing and preventing upward fluid flow through a casing string. The valve is convertible from a locked open position permitting reverse upward fluid flow therethrough to a check valve position preventing upward fluid flow therethrough by flowing fluid downwardly through the casing to actuate an indexing J-slot mechanism interconnecting the spring-loaded valve member and the valve body assembly. The valve may be recycled to the locked open position from the check valve position an unlimited number of times through the flowing of fluid in a forward direction downwardly through the casing string.

Claims18

Dependent claims

A flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit, comprising:

a valve body having a substantially longitudinally aligned passage therethrough;
means for connecting said valve body in a conduit;
a valve seat disposed in the passage in said valve body and facing in the direction of forward fluid flow through said valve body;
valve member means having a valve stem formed thereon and extending in longitudinal alignment with said valve body, said valve member means being movably disposed in the passage in said valve body for engagaing said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
an indexing sleeve secured to said valve stem and having at least one outwardly extending protuberance formed thereon, and
J-slot means carried by said valve body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a cam slot formed therein in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through the passage in said valve body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of foward fluid flow through the passage in said valve body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through the passage in said valve body to thereby again allow reverse fluid flow therethrough.

6 more elements

A flow responsive fluid check valve for controlling forward and reverse fluid through a conduit, comprising:

a valve body having a substantially longitudinally aligned passage therethrough;
means for connecting said valve body in a conduit;
a valve seat disposed in the passage in said valve body and facing in the direction of forward fluid flow through said valve body;
valve member means having a valve stem formed thereon and extending in axial alignment within the passage in said valve body, said valve member means being movably disposed in the passage in said valve body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
valve guide means carried by said valve body for guiding said valve member means, said valve guide means having a longitudinal passage formed therein within which said valve stem extends and including at least one inwardly extending protuberance formed within the longitudinal passage thereof;
and
a J-slot indexing sleeve secured to said valve stem and disposed within the longitudinal passage of said valve guide means, said J-slot indexing sleeve having a cam slot formed on the outer periphery thereof in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through the passage in said valve body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through the passage in said valve body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through the passage in said valve body to thereby again allow reverse fluid flow therethrough.

7 more elements

A flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit, comprising:

a valve body having a substantially longitudinally aligned passage therethrough;
means for connecting said valve body in a conduit;
a valve seat disposed in the passage in said valve body and facing in the direction of forward fluid flow through said valve body;
valve member means having a valve stem formed thereon and extending in axial alignment within the passage in said valve body, said valve member means being movably disposed in the passage in said valve body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
an indexing sleeve journaled on said valve stem and having a plurality of outwardly extending, cam-following protuberances formed thereon;
and
J-slot means carried by said valve body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a continuous cam slot formed therein in which each of the plurality of protuberances is slidably received, for engaging the plurality of protuberances to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through the passage in said valve body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through the passage in said valve body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through the passage in said valve body to thereby again allow reverse fluid flow therethrough.

7 more elements

Valve apparatus for controlling downward forward flow and upward reverse flow of a fluid through a pipe string in a well, comprising:

a tubular body;
means for connecting said tubular body in a pipe string in coaxial communication therewith;
a valve seat disposed in said tubular body facing downwardly in the direction of forward fluid flow;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body, said valve member means being movably disposed in said tubular body for engaging said valve seat to close said tubular body to upward reverse fluid flow therethrough, and alternatively, for disengaging from said valve seat to open said tubular body to upward reverse fluid flow therethrough;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said tubular body and said valve member means, said flow responsive means including:
an indexing sleeve secured to said valve stem and having at least one outwardly extending protuberance formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a cam slot formed therein in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow upward reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of downward forward fluid flow through said tubular body to thereby prevent upward reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of downward forward fluid flow through said tubular body to thereby again allow upward reverse fluid flow therethrough.

7 more elements

Valve apparatus for controlling downward forward flow and upward reverse flow of a fluid through a pipe string in a well, comprising:

a tubular body;
means for connecting said tubular body in a pipe string in coaxial communication therewith;
a valve seat disposed in said tubular body facing downwardly in the direction of forward fluid flow;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body, said valve member means being movably disposed in said tubular body for engaging said valve seat to close said tubular body to upward reverse fluid flow therethrough and, alternately, for disengaging from said valve seat to open said tubular body to upward reverse fluid flow therethrough;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
valve guide means carried by said tubular body for guiding said valve member means, said valve guide means having a longitudinal passage formed therein within which said valve stem extends and including at least one inwardly extending protuberance formed within the longitudinal passage thereof;
and
a J-slot indexing sleeve secured to said valve stem and disposed within the longitudinal passage of said valve guide means, said J-slot indexing sleeve having a cam slot formed on the outer periphery thereof in which the protuberance is slidably received for engaging the protuberance to retain said valve member means disposed from said valve seat against the urging of said biasing means to thereby allow upward reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of downward forward fluid flow through said tubular body to thereby prevent upward reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of downward forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

7 more elements

Valve apparatus for controlling downward forward flow and upward reverse flow of a fluid through a pipe string in a well, comprising:

a tubular body;
means for connecting said tubular body in a pipe string in coaxial communication therewith;
a valve seat disposed in said tubular body facing downwardly in the direction of forward fluid flow;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body, said valve member means being movably disposed in said tubular body for engaging said valve seat to close said tubular body to upward reverse fluid flow therethrough and, alternately, for disengaging from said valve seat to open said tubular body to upward reverse fluid flow therethrough;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
an indexing sleeve journaled on said valve stem and having a plurality of outwardly extending, cam-following protuberances formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a continuous cam slot formed therein in which each of the plurality of protuberances is slidably received, for engaging the plurality of protuberances to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow upward reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of downward forward fluid flow through said tubular body to thereby prevent upward reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of downward forward fluid flow through said tubular body to thereby again allow upward reverse fluid flow therethrough.

7 more elements

In a flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit of the type which includes a tubular body;

means for connecting said tubular body in a conduit;
a valve seat disposed in said tubular body facing in the direction of forward fluid flow through said tubular body;
valve member means having a valve stem formed thereon and extending in longitudinal alignment within said tubular body said valve member means being movably disposed in said tubular body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
and biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
the improvement comprising:
flow responsive means operatively, mutually engaging said tubular body and said valve member means, said flow responsive means including:
an indexing sleeve secured to said valve stem and having at least one outwardly extending protuberance formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a cam slot formed therein in which the protuberance is slidably received, for engaging the protuberance to retain the valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through said tubular body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

6 more elements

In a flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit of the type which includes a tubular body;

means for connecting said tubular body in a conduit;
a valve seat disposed in said tubular body facing in the direction of forward fluid flow through said tubular body;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body said valve member means being disposed in said tubular body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
and biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
the improvement comprising:
flow responsive means operatively mutually engaging said tubular body and said valve means, said flow responsive means including:
valve guide means carried by said tubular body for guiding said valve member means, said valve guide means having a longitudinal passage formed therein within which said valve stem extends and including at least one inwardly extending protuberance formed within the longitudinal passage thereof;
and
a J-slot indexing sleeve secured to said valve stem and disposed within the longitudinal passage of said valve guide means, said J-slot indexing sleeve having a cam slot formed on the outer periphery thereof in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through said tubular body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

6 more elements

In a flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit of the type which includes a tubular body;

means for connecting said tubular body in a conduit;
a valve seat disposed in said tubular body facing in the direction of forward fluid flow through said tubular body;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body said valve member means being disposed in said tubular body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
and biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
the improvement comprising:
flow responsive means operatively mutually engaging said tububular body and said valve member means, said flow responsive means including:
an indexing sleeve journaled on said valve stem and having a plurality of outwardly extending, cam-following protuberances formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a continuous cam slot formed therein in which each of the plurality of protuberances is slidably received, for engaging the plurality of protuberances to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through said tubular body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

05/646,284Filed 2 Jan 1976 · division

Priority

18 Jul 1975

Granted

10 Jan 1978

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

E21B 23/006
Indexing systems for guiding relative movement between telescoping parts of downhole tools: "J-slot" systems, i.e. lug and slot indexing mechanisms
E21B 21/10
Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor: valve arrangements in drilling-fluid circulation systems
Y10T 137/7854
Direct response valves [i.e., check valve type]: in couplings for coaxial conduits, e.g., drill pipe check valves
Y10T 137/86405
Programmer or timer: repeating cycle

Abstract

Claims18

Dependent claims

A flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit, comprising:

a valve body having a substantially longitudinally aligned passage therethrough;
means for connecting said valve body in a conduit;
a valve seat disposed in the passage in said valve body and facing in the direction of forward fluid flow through said valve body;
valve member means having a valve stem formed thereon and extending in longitudinal alignment with said valve body, said valve member means being movably disposed in the passage in said valve body for engagaing said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
an indexing sleeve secured to said valve stem and having at least one outwardly extending protuberance formed thereon, and
J-slot means carried by said valve body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a cam slot formed therein in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through the passage in said valve body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of foward fluid flow through the passage in said valve body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through the passage in said valve body to thereby again allow reverse fluid flow therethrough.

6 more elements

A flow responsive fluid check valve for controlling forward and reverse fluid through a conduit, comprising:

a valve body having a substantially longitudinally aligned passage therethrough;
means for connecting said valve body in a conduit;
a valve seat disposed in the passage in said valve body and facing in the direction of forward fluid flow through said valve body;
valve member means having a valve stem formed thereon and extending in axial alignment within the passage in said valve body, said valve member means being movably disposed in the passage in said valve body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
valve guide means carried by said valve body for guiding said valve member means, said valve guide means having a longitudinal passage formed therein within which said valve stem extends and including at least one inwardly extending protuberance formed within the longitudinal passage thereof;
and
a J-slot indexing sleeve secured to said valve stem and disposed within the longitudinal passage of said valve guide means, said J-slot indexing sleeve having a cam slot formed on the outer periphery thereof in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through the passage in said valve body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through the passage in said valve body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through the passage in said valve body to thereby again allow reverse fluid flow therethrough.

7 more elements

A flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit, comprising:

a valve body having a substantially longitudinally aligned passage therethrough;
means for connecting said valve body in a conduit;
a valve seat disposed in the passage in said valve body and facing in the direction of forward fluid flow through said valve body;
valve member means having a valve stem formed thereon and extending in axial alignment within the passage in said valve body, said valve member means being movably disposed in the passage in said valve body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
an indexing sleeve journaled on said valve stem and having a plurality of outwardly extending, cam-following protuberances formed thereon;
and
J-slot means carried by said valve body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a continuous cam slot formed therein in which each of the plurality of protuberances is slidably received, for engaging the plurality of protuberances to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through the passage in said valve body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through the passage in said valve body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through the passage in said valve body to thereby again allow reverse fluid flow therethrough.

7 more elements

Valve apparatus for controlling downward forward flow and upward reverse flow of a fluid through a pipe string in a well, comprising:

a tubular body;
means for connecting said tubular body in a pipe string in coaxial communication therewith;
a valve seat disposed in said tubular body facing downwardly in the direction of forward fluid flow;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body, said valve member means being movably disposed in said tubular body for engaging said valve seat to close said tubular body to upward reverse fluid flow therethrough, and alternatively, for disengaging from said valve seat to open said tubular body to upward reverse fluid flow therethrough;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said tubular body and said valve member means, said flow responsive means including:
an indexing sleeve secured to said valve stem and having at least one outwardly extending protuberance formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a cam slot formed therein in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow upward reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of downward forward fluid flow through said tubular body to thereby prevent upward reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of downward forward fluid flow through said tubular body to thereby again allow upward reverse fluid flow therethrough.

7 more elements

Valve apparatus for controlling downward forward flow and upward reverse flow of a fluid through a pipe string in a well, comprising:

a tubular body;
means for connecting said tubular body in a pipe string in coaxial communication therewith;
a valve seat disposed in said tubular body facing downwardly in the direction of forward fluid flow;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body, said valve member means being movably disposed in said tubular body for engaging said valve seat to close said tubular body to upward reverse fluid flow therethrough and, alternately, for disengaging from said valve seat to open said tubular body to upward reverse fluid flow therethrough;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
valve guide means carried by said tubular body for guiding said valve member means, said valve guide means having a longitudinal passage formed therein within which said valve stem extends and including at least one inwardly extending protuberance formed within the longitudinal passage thereof;
and
a J-slot indexing sleeve secured to said valve stem and disposed within the longitudinal passage of said valve guide means, said J-slot indexing sleeve having a cam slot formed on the outer periphery thereof in which the protuberance is slidably received for engaging the protuberance to retain said valve member means disposed from said valve seat against the urging of said biasing means to thereby allow upward reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of downward forward fluid flow through said tubular body to thereby prevent upward reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of downward forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

7 more elements

Valve apparatus for controlling downward forward flow and upward reverse flow of a fluid through a pipe string in a well, comprising:

a tubular body;
means for connecting said tubular body in a pipe string in coaxial communication therewith;
a valve seat disposed in said tubular body facing downwardly in the direction of forward fluid flow;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body, said valve member means being movably disposed in said tubular body for engaging said valve seat to close said tubular body to upward reverse fluid flow therethrough and, alternately, for disengaging from said valve seat to open said tubular body to upward reverse fluid flow therethrough;
biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
and
flow responsive means operatively mutually engaging said valve body and said valve member means, said flow responsive means including:
an indexing sleeve journaled on said valve stem and having a plurality of outwardly extending, cam-following protuberances formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a continuous cam slot formed therein in which each of the plurality of protuberances is slidably received, for engaging the plurality of protuberances to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow upward reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of downward forward fluid flow through said tubular body to thereby prevent upward reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of downward forward fluid flow through said tubular body to thereby again allow upward reverse fluid flow therethrough.

7 more elements

In a flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit of the type which includes a tubular body;

means for connecting said tubular body in a conduit;
a valve seat disposed in said tubular body facing in the direction of forward fluid flow through said tubular body;
valve member means having a valve stem formed thereon and extending in longitudinal alignment within said tubular body said valve member means being movably disposed in said tubular body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
and biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
the improvement comprising:
flow responsive means operatively, mutually engaging said tubular body and said valve member means, said flow responsive means including:
an indexing sleeve secured to said valve stem and having at least one outwardly extending protuberance formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a cam slot formed therein in which the protuberance is slidably received, for engaging the protuberance to retain the valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through said tubular body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

6 more elements

In a flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit of the type which includes a tubular body;

means for connecting said tubular body in a conduit;
a valve seat disposed in said tubular body facing in the direction of forward fluid flow through said tubular body;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body said valve member means being disposed in said tubular body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
and biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
the improvement comprising:
flow responsive means operatively mutually engaging said tubular body and said valve means, said flow responsive means including:
valve guide means carried by said tubular body for guiding said valve member means, said valve guide means having a longitudinal passage formed therein within which said valve stem extends and including at least one inwardly extending protuberance formed within the longitudinal passage thereof;
and
a J-slot indexing sleeve secured to said valve stem and disposed within the longitudinal passage of said valve guide means, said J-slot indexing sleeve having a cam slot formed on the outer periphery thereof in which the protuberance is slidably received, for engaging the protuberance to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through said tubular body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

6 more elements

In a flow responsive fluid check valve for controlling forward and reverse fluid flow through a conduit of the type which includes a tubular body;

means for connecting said tubular body in a conduit;
a valve seat disposed in said tubular body facing in the direction of forward fluid flow through said tubular body;
valve member means having a valve stem formed thereon and extending in axial alignment within said tubular body said valve member means being disposed in said tubular body for engaging said valve seat to close said fluid check valve to reverse fluid flow and, alternately, for disengaging from said valve seat to open said fluid check valve to reverse fluid flow;
and biasing means operatively engaging said valve member means for urging said valve member means toward said valve seat;
the improvement comprising:
flow responsive means operatively mutually engaging said tububular body and said valve member means, said flow responsive means including:
an indexing sleeve journaled on said valve stem and having a plurality of outwardly extending, cam-following protuberances formed thereon;
and
J-slot means carried by said tubular body, and having a longitudinal passage formed therein in which said indexing sleeve is slidably received and having a continuous cam slot formed therein in which each of the plurality of protuberances is slidably received, for engaging the plurality of protuberances to retain said valve member means disengaged from said valve seat against the urging of said biasing means to thereby allow reverse fluid flow through said tubular body, for releasing said valve member means for engagement with said valve seat under the urging of said biasing means in response to an application of forward fluid flow through said tubular body to thereby prevent reverse fluid flow therethrough, and for again retaining said valve member means disengaged from said valve seat against the urging of said biasing means in response to another application of forward fluid flow through said tubular body to thereby again allow reverse fluid flow therethrough.

6 more elements

Dependencies are inferred from the claim text.

Indexing automatic fill-up float valve

Life of this patent

Abstract

Claims18

Indexing automatic fill-up float valve

Life of this patent

Abstract

Claims18