Fisher Controls International LLC

Other

Fisher Controls Company, Inc.

Philip Wayne Eggleston

Wilbur Dean Hutchens

James Leroy Lounsberry

Randy Jerold Hall

Douglas James Boyd

Melvin L Osgood

Steven B Paullus

Eugene R Taylor, Jr

Kenneth Lemoyne Rasmussen

Danny Paul Nelson

A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shafts. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the disc is in the open position, the seal major axis is greater then the disc diameter and they do not touch. As the disc rotates to near closure, the disc perimeter engages the minor axis of the seal (which is smaller than the disc diameter), and the disc stretches the seal in the minor axis direction thus decreasing the major axis such that the gap is closed. The seal can be preformed in an elliptical shape or it can be formed into an elliptical shape by a retaining mechanism. The seal may be a single-piece or a multi-piece assembly press-fit into the valve body. Zero or light disc to seal contact during the majority of the valve disc rotation minimizes valve seal wear and rotational friction.

Elliptical sealing surface for butterfly valve

Well fluid extraction apparatus includes a resiliently downwardly biased discharge head and a canister lowerable from the discharge head into the well to receive fluid therefrom, and then liftable into telescoped engagement with the discharge head. A specially configured seal structure between the discharge head and canister resiliently exerts a downward releasing force on the raised canister to facilitate its subsequent separation from the discharge head. An embodiment of the discharge head is pressure balanced to prevent gas pressure in the well from driving it upwardly. Leveling structure is provided for operatively connecting the apparatus to the vertically sloped upper end of a well casing and vertically leveling the connected apparatus.

Portable well fluid extraction apparatus

A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shaft. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the disc is in the open position, the seal major axis is greater then the disc diameter and they do not touch. As the disc rotates to near closure, the disc perimeter engages the minor axis of the seal (which is smaller than the disc diameter), and the disc stretches the seal in the minor axis direction thus decreasing the major axis such that the gap is closed. The seal can be pre-formed in an elliptical shape or it can be formed into an elliptical shape by a retaining mechanism. The seal may be a single-piece or a multi-piece assembly press-fit into the valve body. Zero or light disc to seal contact during the majority of the valve disc rotation minimizes valve seal wear and rotational friction.

A rotary valve is provided with an elliptical valve disc that seats against a seal element operatively mounted in an elliptically shaped depression formed in the rigid annular portion of a seal cartridge structure carried by the valve body. Due to the elliptical shapes of the disc and corresponding seating structure, and a conical configuration of the disc periphery, sealing of the valve disc, the integrity of the seal, and the ability of the seal to completely stop the flow of fluid through the valve body are desirably improved. The centering of valve disc relative to the seal cartridge is facilitated by a specially designed disc mounting structure that eliminates any necessity of adjusting the disc along its rotational axis, and a one-piece actuator bracket is removably mounted to the valve body to substantially simplify and reduce the expense of operatively associating an actuator with the valve.

Rotary valve apparatus and associated methods

The present invention is directed towards a fluid extractor system that has been design to obtain fluid, such as crude oil from wells at a fraction of the cost by using a novel canister assembly lowered in a well to collect the fluid. The canister assembly includes a pump and a storage container for collecting the fluid pumped into it by the pump. When the storage container is full the canister assembly is brought to the surface and emptied. In one embodiment the canister assembly has a battery to independently power the pump. A further feature of the invention includes repeatedly raising and incrementally lowering down the canister assembly to lower levels in the well using a jogging assembly to place the canister assembly only in the top layer of the fluid in the well. The system could also be used for recovering several other types of fluids in a well such as gas or water.

Apparatus for extracting oil or other fluids from a well

Rotary valve apparatus

A rotary valve actuator with movable actuator linkage maintained in a constant 'pull-pull' tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in response to an expanding and contracting pressurized bladder is converted through chain linkage into rotary lever motion. The return spring is connected through respective chain linkage to the lever so the pulling tension of the spring/lever linkage rotates the lever and maintains tension on both chain linkages. Adjustable travel stops are provided. In an alternate embodiment the return spring chain linkage is configured at right angles to the linear movement of the canister. A double acting rotary valve actuator with pressurized bladders on opposite sides of a rotatable lever. One bladder is oval shaped. The other bladder is oval shaped with double convolutions enabling the associated canister to be driven with a center rod through the middle of the double convolutions bladder.

Double acting rotary valve actuator

A rotary valve actuator with movable actuator linkage maintained in a constant 'pull-pull' tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in response to an expanding and contracting pressurized bladder is converted through chain linkage into rotary lever motion. The return spring is connected through respective chain linkage to the lever so the pulling tension of the spring/lever linkage rotates the lever and maintains tension on both chain linkages. Adjustable travel stops are provided. In an alternate embodiment the return spring chain linkage is configured at right angles to the linear movement of the canister.

Tension-spring return rotary valve actuator

A rotary valve actuator with movable actuator linkage maintained in a constant 'pull-pull' tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in response to an expanding and contracting pressurized bladder is converted through chain linkage into rotary lever motion. The return spring is connected through respective chain linkage to the lever so the pulling tension of the spring/lever linkage rotates the lever and maintains tension on both chain linkages. Adjustable travel stops are provided. In an alternate embodiment the return spring chain linkage is configured at right angles to the linear movement of the canister. A zero lost motion universal connection includes a splined sleeve matching the splined valve shaft and inserted into a lever bore. A set screw with a flat front end is threaded into the lever and tightened against a flat surface on the splined sleeve exterior.

Rotary valve actuator with zero lost motion universal connection

A rotary valve actuator with movable actuator linkage maintained in a constant 'pull-pull' tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in response to an expanding and contracting pressurized bladder is converted through chain linkage into rotary lever motion. The return spring is connected through respective chain linkage to the lever so the pulling tension of the spring/lever linkage rotates the lever and maintains tension on both chain linkages. Adjustable travel stops are provided. In an alternate embodiment the return spring chain linkage is configured at right angles to the linear movement of the canister. A double acting rotary valve actuator with pressurized bladders on opposite sides of a rotatable lever. One bladder is oval shaped. The other bladder is oval shaped with double convolutions enabling the associated canister to be driven with a center rod through the middle of the double convolutions bladder. A linear valve actuator with a double convolutions bladder driving a canister center rod through the bladder center, and with a return spring for actuating a valve stem.

Double convoluted pliable pressure conversion unit

A rotary valve actuator for fluid control valves having improved actuator linkage matching the torque requirements of most rotary shaft valves. A link member is pivotally interconnected to a linear movable actuating member and to a rotatable lever. The link member enables a high actuator torque to be developed and provided during the times when the valve requires a high torque, and a low actuator torque during other times when the valve only requires a lower torque. A high-low-high actuator torque is provided matching the high-low-high torque requirements of most rotary valves.

Rotary valve actuator with high-low-high torque linkage

A valve actuator with an instrument mounting pad and a manifold in a power module and yoke combination for mounting a valve controller instrument without tubing or mounting brackets. A cover encloses the feedback linkage between the actuator and instrument. The actuator includes a second instrument mounting pad and manifold so the power module is reversible to accommodate fail-safe opened or fail-safe closed valve conditions. A valve actuator and instrument combination is no higher than the actuator alone.

Valve actuator with instrument mounting manifold

An actuator for fluid control valves with a reversible power module having a stationary inner member and a coaxially aligned movable outer member coupled to the valve flow control element and slidably movable on the inner member. A chamber formed between respective ends of the members includes a preformed bladder. Pneumatic pressure applied to the bladder drives the movable member to actuate the valve in a first direction. A spring returns the movable member in the second direction. The preformed bladder is formed with two pieces including an interconnecting perimeter portion. During bladder actuation the bladder perimeter portion is displaced from the bladder inner diameter to the bladder outer diameter with the bladder material in tension to thereby prolong bladder life.

Growing community of inventors

Sherman, TX, United States of America

Philip Wayne Eggleston