Inventor: Willard E. Kemp

Address: Houston, TX
No. of patents: 33
Last patent issue date: 08/10/2004

Number	Title	Issue Date
6773521	Apparatus and process for treating a particulate material within a rotating retort Apparatus (1) and process for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5...	08/10/2004
6427711	Inline check valve An inline check valve having a piston member and a seat in a valve body having a larger diameter at the end thereof away from the piston. The seat is retained within a groove by a seat retainer which prevents removal of the seat from the groove without de...	08/06/2002
6425570	Ball valve having retractable sealing member A ball valve having an upstream seat (92) with the seat actuated by outside pressure (14, 16). Retraction members (100, 102) continuously urge seat (92) to a retracted position out of sealing engagement with the ball. A sealing member (104) fits loosely w...	07/30/2002
5958156	Process for treating a particulate material within a rotating retort Apparatus (1) and process for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5) for tilting movement in a ver...	09/28/1999
5766544	Process for fluidizing particulate material within a rotatable retort A method for fluidizing particulate material within a retort (22) mounted on a horizontal shaft or axle (36) for rotation. Gas enters retort (22) through a pipe (52) extending along the longitudinal axis of the shaft (36) and is exhausted through pipe man...	06/16/1998
5759483	Apparatus for treating a particulate material within a rotating retort Apparatus (1) for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5) for tilting movement in a vertical plane....	06/02/1998
5435337	Inline control valve for controlling fluid flow An inline control valve (10-10F) having a fixed diverter member or plug (34-34F) positioned centrally of the flow passage (30-30F) and a sleeve (40-40F) mounted for movement between open and closed position relating to the plug (34-34F). One embodiment (F...	07/25/1995
5407498	Mechanically fluidized retort and method for treating particles therein A method and apparatus for diffusion of elements into or out of small metallic particles, the apparatus consisting of a sealed retort 22 horizontally mounted on an axle 36 with the retort subtended in the interior of a heating device 11. Gas and pressure ...	04/18/1995
5399207	Process for surface hardening of refractory metal workpieces A process and apparatus for forming a hardened outer shell (40) on a refractory metal workpiece (36) preferably heated in a fluidized bed of metallic oxide particles (38) in an environment of an inert gas and a reactive gas with the reactive gas either ox...	03/21/1995
5378331	Apparatus and method for electropolishing metal workpieces An apparatus and method especially adapted for electropolishing reactive metal workpieces which require aggressive electrolytes. It incorporates a single, closed, pressure-tight polishing chamber into which metal workpieces are placed for a multi-step ope...	01/03/1995
5316594	Process for surface hardening of refractory metal workpieces A process and apparatus for forming a hardened outer shell (40) on a refractory metal workpiece (36) preferably heated in a fluidized bed of metallic oxide particles (38) in an environment of an inert gas and a reactive gas with the reactive gas either ox...	05/31/1994
5303904	Method and apparatus for controlling heat transfer between a container and workpieces An apparatus for transferring heat between workpieces and a container (10, 10A). The container (10, 10A) has particulate material (28) occupying a substantial portion of the volume of the container (10, 10A) and the container (10, 10A) is rotated to fluid...	04/19/1994
5170659	Apparatus and method for detecting fluid leakage Apparatus and method for detecting fluid leakage into an enclosed leakage chamber or space sealed by a fluid seal exposed to pressurized fluid from a flow line or pressure vessel. Upon leakage of fluid from the flow line or pressure vessel past the seal i...	12/15/1992
5127628	Means for rotating ball valves between open and closed positions A ball valve (10) has a stem (28) to rotate a ball member (20) with a lower key or lug (29) received within a slot or opening (26) forming a keyway in the ball member (20). As shown particularly in FIGS. 2 and 3, relieved or cutaway surfaces (52, 54, 56) ...	07/07/1992
5000492	Flanged connection for flow line members A connection for connecting an end hub (22) of a valve (10) to the flange (32) of an associated conduit (26). A bolting ring (36) has a threaded end portion (64) adjacent the valve (10), and a cylindrical smooth end portion (68) remote from the valve (10)...	03/19/1991
4940208	Ball valve A ball valve (10) has a ball valve member (34) mounted for floating movement in a valve chamber (32) between an upstream metal seat (102) and a downstream metal seat (104). Each metal seat (102, 104) fits within a recess (100) and has a body portion (110)...	07/10/1990
4919391	flanged connection for valves A connection for connecting an end hub (22) of a valve (10) to the flange (32) of an associated conduit (26). A bolting ring (36) has a threaded end portion (64) adjacent the valve (10), and a cylindrical smooth end portion (68) remote from the valve (10)...	04/24/1990
4911408	Seat assembly for ball valves A top entry ball valve (10) has a removable top plate (34) to permit the removal of a ball valve member (80). Valve seat assemblies (98, 100) each include a primary metal seat member (102), a concentric secondary elastomeric seat member (104), and a conce...	03/27/1990
4911196	Inline check valve An inline check valve (10) has a valve body (12) with an enlarged diameter valve chamber (14) in which a cage assembly (44) is mounted. Cage assembly (44) has a cylindrical body (48) fitted about the outlet flow passage (18) and projecting in unsupported ...	03/27/1990
4899980	Ball valve A ball valve (10) has a ball valve member (34) mounted for floating movement in a valve chamber (32) between an upstream metal seat (102) and a downstream metal seat (104). Each metal seat (102, 104) fits within a recess (100) and has a body portion (110)...	02/13/1990
4588164	Through conduit gate valve A through-conduit, double-wedging parallel seat gate valve. The valve has a monolithic body forming a spherical segment with a cylindrical flow passage and flange end connections. The body has a transverse chamber mounting a rectangular gate moved across ...	05/13/1986
4530488	Through conduit gate valve with double expanding gate assembly An improved through conduit gate valve having a double expanding gate assembly with floating seats. The gate assembly carries at its edges flat guide strips which are slightly thicker than the collapsed thickness of the gate. These strips engage the seals...	07/23/1985
4410373	Process for heat treatment of a metal workpiece A process for heat treatment of a metal workpiece, such as a casting (steel, aluminum based alloy or white cast iron). The casting is heated in a fluidized particulate bed (sand) to a relatively constant first temperature. Then, the casting is held (e.g.,...	10/18/1983
4379725	Process for hot isostatic pressing of a metal workpiece A process for hot isostatic pressing of a metal workpiece, such as a ferrous casting. The workpiece is heated in a fluidized particulate bed (sand) to a temperature above the plastic range of the metal (e.g. 2000° F.). Then, the workpiece in the unfluidi...	04/12/1983
4318437	Metal casting system A metal casting system including novel process and apparatus wherein the shape of the casting is defined by a thin thermal degrading film supported by a particulate bed. A pattern having the shape of the desired casting is surrounded by the tight fitting ...	03/09/1982
4249889	Method and apparatus for preheating, positioning and holding objects Method and apparatus comprising a fine particle bed for encompassing an object, means for fluidizing the bed, while heat treating the bed if desired, and defluidizing of the bed so as to hold the object at a desirably aligned position with an exposed port...	02/10/1981
4222429	Foundry process including heat treating of produced castings in formation sand Castings are produced in a bed of production sand susceptible to both fluidizing and vacuumizing. The use of a vacuum at the time the molten metal is poured permits the use of thin shell molds made around styrene patterns, the vacuum maintaining mold shap...	09/16/1980
4193577	Expanding gate valve with axially flexed spring plate An improved spring plate (52) for insuring timely cooperation between the gate member (36) and segment member (38) of a linearly reciprocating gate assembly (34) which is expansible to seal the opposed seats of a gate valve. The two members have two pairs...	03/18/1980
4178665	Method of making a fabricated gate valve A method of fabricating a gate valve having a hollow body with inlet and outlet conduits mounted therein and seat support members mounted on inner ends of the conduits includes fabricating and stress relieving a seat support assembly, then machining it to...	12/18/1979
4160460	Fire-safe valve structure A fire-safe valve structure has a metal seat with an annular groove therein in which a resilient sealing ring is positioned in face-to-face contact with a valve member movable between open and closed positions. The annular groove has an annular space behi...	07/10/1979
4111396	Fabricated gate valve structure A gate valve structure having a hollow body with inlet and outlet conduits mounted thereon and opposed seat support members mounted on inner ends of the conduits. The opposed seat support members have seat pockets which are finish machined before insertio...	09/05/1978
4072126	Visual indicator for safety systems A visual indicating device including a reflecting surface on one end thereof and a piston with an extendible and retractable indicator member attached thereto extending through the aperture. The extendible indicator member is colored and has a longitudina...	02/07/1978
4066240	Self compensating seat for a spherical plug valve A ball or spherical plug valve has a pair of annular seal rings with outer peripheral portions thereof mounted in contact with the valve chamber end walls and inner annular edge portions thereof in sealing contact with the ball member and in a spaced rela...	01/03/1978

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Inventor: Willard E. Kemp