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US 7,114,699 B2Granted
Combination valve and regulation for use with pressurized gas cylinders, particularly oxygen cylinders
OwnerWendell C. Hull, Barry E. Newtoninventors
Life of this patent
Estimating the term…
Abstract
A valve apparatus, and combined valve-regulator apparatus, for safely regulating the flow of combustible gases such as oxygen.
Claims41
An apparatus for regulating the flow of a gas between a high-pressure zone and a zone of lower pressure, said apparatus comprising:
- a hollow body having an axis;
- a first chamber and a second chamber, said chambers defined within said body;
- a nozzle within said body and separating said chambers, said nozzle comprising a convexly curved wall, and defining a passage for the passage of gas between said chambers;
- and
- a stem movable axially within said passage and comprising:
- a distal portion extending at least partially into said first chamber;
- a proximate portion within said second chamber and extending into said passage, wherein axial movement of said stem varies the position of said proximate portion in relation to said nozzle;
- and
- an o-ring seat between said proximate portion and said distal portion of said stem and contactable with said nozzle to seal said passage against the passage of gas.
6 more elements
An apparatus for regulating the flow of a gas between a high-pressure zone and a zone of lower pressure, said apparatus comprising:
- a hollow body having an axis;
- a first chamber and a second chamber, said chambers defined within said body;
- a nozzle within said body and separating said chambers, said nozzle defining a passage for the passage of gas between said chambers;
- a stem movable axially within said passage and comprising:
- a distal portion extending at least partially into said first chamber;
- a proximate portion within said second chamber and extending into said passage, wherein axial movement of said stem varies the position of said proximate portion in relation to said nozzle;
- and
- an o-ring seat between said proximate portion and said distal portion of said stem and contactable with said nozzle to seal said passage against the passage of gas;
- and
- means for regulating pressure in said second chamber, comprising:
- a spring flange movably disposed within said body;
- a disk member positionally fixed within said body, said spring flange and said disk member defining there-between an interstage chamber;
- and
- an axially symmetric shaft passing through a portal in said fixed disk member and through said interstage chamber to separably connect said spring flange to said stem.
11 more elements
An apparatus for regulating the flow of a gas between a high-pressure zone and a zone of lower pressure, said apparatus comprising:
- a hollow body having an axis;
- a first chamber and a second chamber, said chambers defined within said body;
- a nozzle defined by a convexly curved wall within said body and separating said chambers, said nozzle defining a passage for the passage of gas between said chambers;
- and
- a stem movable axially within said passage and comprising:
- a distal portion extending at least partially into said first chamber;
- a proximate portion within said second chamber and extending into said passage, wherein axial movement of said stem varies the position of said proximate portion in relation to said nozzle;
- stem flow grooves defined in said proximate portion for providing gas flow area between said stem and said nozzle;
- and
- an o-ring seat between said proximate portion and said distal portion of said stem and contactable with said nozzle to seal said passage against the passage of gas.
7 more elements
An apparatus for regulating the flow of a gas between a high-pressure zone and a zone of lower pressure, said apparatus comprising:
- a hollow body having an axis, said hollow body defining, adjacent said proximate stem portion, an internal groove for mating with a non-rotational guide pin;
- an adjustment handle;
- a first chamber and a second chamber, said chambers defined within said body;
- a nozzle within said body and separating said chambers, said nozzle having a minimum diameter and defining a passage for the passage of gas between said chambers;
- and
- a stem movable axially within said passage and comprising:
- a distal portion having a diameter less than said minimum diameter of said nozzle, said distal portion extending at least partially into said first chamber;
- a proximate portion, within said second chamber, removably connectable to said distal portion and extending into said passage, wherein axial movement of said stem varies the position of said proximate portion in relation to said nozzle;
- wherein said proximate portion of said stem comprises a threaded means for separably attaching said stem to said adjustment handle, said threaded means comprising barrel means for containing thread wear debris and wherein further said proximate portion of said stem defines an external groove for mating with a non-rotational guide pin;
- a guide pin insertable through a top of said body for mating with said stem external groove and said body internal above throughout the axial stroke of said stem;
- and
- an o-ring seat between said proximate portion and said distal portion of said stem and contactable with said nozzle to seal said passage against the passage of gas.
9 more elements
Dependencies are inferred from the claim text.