US 11,686,400 B2Granted

Oil valve

AssigneePower Flame Incorporated

InventorsKenneth R. George, David S. Neff

Life of this patent

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Abstract

A valve stem for use in a fluid flow control valve having a valve body configured to receive a portion of the valve stem and to enable the valve stem to selectively rotate within the valve body between a fully-open position, where fluid is permitted to flow through the fluid flow control valve, and a fully-closed position, where fluid is prevented from flowing through the fluid flow control valve. The valve stem includes an elongate valve stem arm having a first end and a second end and a valve stem head integrally formed with and fixedly attached to the second end of the valve stem arm. The valve stem head includes a fluid inlet formed in the valve stem head, and a fluid outlet formed in the valve stem head, and a fluid passage that directs fluid from the fluid inlet, through the valve stem, and out of the fluid outlet.

Claims15

Dependent claims

an elongate valve stem arm having a first end and a second end;
and
a valve stem head integrally formed with and fixedly attached to the second end of the valve stem arm, the valve stem head having:
a continuous peripheral wall having opposing front and back sides;
a front face located on the front side of the peripheral wall, wherein the second end of the valve stem arm is fixedly attached to the front face of the valve stem head;
a back face located opposite the front face on the back side of the peripheral wall;
a second fluid inlet formed in the valve stem head;
a second fluid outlet formed in the valve stem head;
a fluid passage that carries fluid into the valve stem via the second fluid inlet and then out of the valve stem via second fluid outlet;
and
an elongate canal formed by opposing walls in the peripheral wall and extending circumferentially around a portion of the valve stem head such that a first end of the canal is located at a first circumferential location of the valve stem head and a second end of the canal is located at a second circumferential location of the valve stem head,
wherein:
the second fluid inlet is disposed in the canal;
the second fluid inlet is formed in the peripheral wall of the valve stem head;
the second fluid outlet is formed in the back face of the valve stem head;
outer surface portions of the peripheral wall that are located adjacent the opposing walls of the canal are configured to restrict fluid flow from the valve body into the valve stem in order modulate fluid flow through the fluid flow control valve;
and
the canal forms a crescent shape when viewed from one of the opposing front and back sides of the peripheral wall and opposing ends of the crescent shape are tapered such that a widest portion of the crescent shape of the canal is located between the first and second ends of the canal.

15 more elements

A bi-direction fluid flow metering valve comprising:

a valve body having:
a first fluid inlet;
a first fluid outlet;
a valve stem receiver;
and
a first fluid passage that directs fluid from the first fluid inlet, through the valve stem receiver, and then out of the first fluid outlet;
a valve stem having:
an elongate valve stem arm having a first end and a second end;
a valve stem head integrally formed with and fixedly attached to the second end of the valve stem arm, the valve stem head sized and configured for rotatable insertion within the valve stem receiver of the valve body and the valve stem head having:
a peripheral wall;
a second fluid inlet and a second fluid outlet that are each formed in the valve stem head;
a second fluid passage that directs fluid from the second fluid inlet and then out of the second fluid out;
an elongate canal formed by opposing walls formed in the peripheral wall and extending circumferentially around a portion of the valve stem head such that a first end of the canal is located at a first circumferential location of the valve stem head and a second end of the canal is located at a second circumferential location of the valve stem head, wherein the second fluid inlet is disposed in the canal;
and
wherein the canal has a pointed oval shape in a first orientation and a crescent shape in a second orientation,
wherein, when the valve stem is located within the valve stem receiver, outer surface portions of the peripheral wall that are located adjacent the opposing walls of the canal are configured to be located adjacent the first fluid inlet of the valve body and to provide a variable restriction to fluid flowing from the first inlet of the valve body into canal based on a rotational position of the valve stem relative to the valve body in order modulate fluid flow through the flow metering valve, and
wherein the valve stem is configured to rotate within the valve body:
counterclockwise from a fully-open position, where fluid is permitted to flow through the fluid flow metering valve, to a first fully-closed position, where fluid is prevented from flowing through the fluid flow metering valve;
and
clockwise from the fully-open position to a second fully-closed position.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/879,401Filed 2 Aug 2022 · us provisional application
Priority: 19 Aug 2021
Published: US 2023/0055194 A123 Feb 2023
Granted: 27 Jun 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16K 15/06
With guided rigid valve members: with guided stems
F16K 3/26
With cylindrical valve members: with fluid passages in the valve member
F16K 5/0407
With plugs having cylindrical surfaces; Packings therefor: with particular plug arrangements, e.g. particular shape or built-in means
F16K 5/0414
With plugs having cylindrical surfaces; Packings therefor: plug channel at 90 degrees to the inlet