Patents by Inventor T. Allen

T. Allen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5221176
    Abstract: A forklift truck blade cover constructed of a resilient compressible material that encloses and pads the toe of the forward extending lift blade of an industrial type forklift truck is provided. The blade cover provides protection from damaging pallets, piercing barrels, piercing trailer walls and creating sparks. The blade cover can be sized according to the type or brand of forklift truck being used and can be mounted on existing lift blades without modification. If the operator desires to secure the cover to the blade all that is required is drilling one or two holes in the blade for mounting bolts. The blade cover can be sized so as to prevent entry into certain types of openings in pallets, etc.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: June 22, 1993
    Inventors: John T. Allen, Maxine G. Moffett
  • Patent number: 5217167
    Abstract: A tube jetting apparatus for cleaning the interior surfaces of tubes such as those in heat exchangers. The jetting apparatus includes a hydraulically actuated lance and piston assembly in a housing. High pressure fluid is directed through ports in the lance and also directed across the piston to actuate the lance and piston assembly while providing high pressure fluid to a jetting nozzle on the lance. The speed of the lance and piston assmbly is controlled and jetting action occurs on both the outward and return strokes. On the return stroke, a pressure relief system is provided to relieve the system pressure through a differential pressure relief valve. A stroke limiter is provided which utilizes a collet for grippingly engaging the lance at a predetermined location thereon while minimizing damage to the surface of the lance.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: June 8, 1993
    Assignee: Halliburton Company
    Inventor: John T. Allen
  • Patent number: 5203095
    Abstract: An improved arch support device and shoe incorporating such device. A device and shoe incorporating the device is disclosed which include rigid members for supporting and distributing weight along the foot both forward and rearward away from the arch and a flexible member for cushioning the heel region of the shoe during standing, walking or other movement.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: April 20, 1993
    Inventor: Don T. Allen
  • Patent number: 5159767
    Abstract: An improved arch support device and shoe incorporating such device. A device and shoe incorporating the device is disclosed which include rigid members for supporting and distributing weight along the foot both forward and rearward away from the arch and a flexible member for cushioning the heel region of the shoe during standing, walking or other movement.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: November 3, 1992
    Inventor: Don T. Allen
  • Patent number: 5154198
    Abstract: A tube jetting apparatus for cleaning the interior surfaces of tubes such as those in heat exchangers. The jetting apparatus includes a hydraulically actuated lance and piston assembly in a housing. High pressure fluid is directed through ports in the lance and also directed across the piston to actuate the lance and piston assembly while providing high pressure fluid to a jetting nozzle on the lance. The speed of the lance and piston assembly is controlled and jetting action occurs on both the outward and return strokes. On the return stroke, a pressure relief system is provided to relieve the system pressure through a differential pressure relief valve. A stroke limiter is provided which utilizes a collet for grippingly engaging the lance at a predetermined location thereon while minimizing damage to the surface of the lance.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: October 13, 1992
    Assignee: Halliburton Company
    Inventor: John T. Allen
  • Patent number: 5141158
    Abstract: A fluid jetting apparatus, such as nozzle, includes a support on which an orifice member is rotatably mounted. Orifices in the member are eccentric so that fluid exiting the orifices gives a driving force to rotate the orifice member relative to the support. To prevent the member from rotating too fast, a magnetic flux is provided to induce eddy currents in the support or the orifice member to produce a resisting torque opposing the speed-increasing torque resulting from the force of the fluid exiting the orifices. The eddy currents arise in response to relative motion between the magnetic flux and either the orifice member or the support.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: August 25, 1992
    Assignee: Halliburton Company
    Inventor: John T. Allen
  • Patent number: 5096167
    Abstract: A support is provided for use in a thermionic converter to support an end of an emitter to keep it out of contact with a surrounding collector while allowing the emitter end to move axially as its temperature changes. The emitter end (34) is supported by a spring structure (44) that includes a pair of Belleville springs, and the spring structure is supported by a support structure (42) fixed to the housing that includes the collector. The support structure is in the form of a sandwich with a small metal spring-engaging element (74) at the front end, a larger metal main support (76) at the rear end that is attached to the housing, and with a ceramic layer (80) between them that is bonded by hot isostatic pressing to the metal element and metal main support. The spring structure can include a loose wafer (120) captured between the Belleville springs.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: March 17, 1992
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Daniel T. Allen
  • Patent number: 5072987
    Abstract: A retractable roof is provided for mounting on a two-wheeled vehicle such as a motorcycle. The roof comprises a flexible waterproof canopy which is removably supported by a tubular metal frame movably secured to the vehicle. The frame includes a stationary base portion and an overhead portion including a front bow, central bow, and rear bow, all of which can be pivoted from an upright position over the seat of the vehicle to a lowered position parallel to the base portion and behind the seat. The central bow includes telescoping elements which allow it to be shortened when in the lowered position.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: December 17, 1991
    Inventor: Marshall T. Allen
  • Patent number: 4963319
    Abstract: A support is provided for use in a thermionic converter to support an end an emitter to keep it out of contact with a surrounding collector while allowing the emitter end to move axially at its temperatures changes. The emitter end (34) is supported by a spring structure (44) that includes a pair of Belleville springs, and the spring structure is supported by a support structure (42) fixed to the housing that includes the collector. The support structure is in the form of a sandwich with a small metal spring-engaging element (74) at the front end, a larger metal main support (76) at the rear end that is attached to the housng, and with a ceramic layer (80) between them that is bonded by hot isostatic pressing to the metal element and metal main support. The spring structure can include a loose wafer (120) captured between the Belleville springs.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: October 16, 1990
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Daniel T. Allen
  • Patent number: 4941272
    Abstract: The normal oxford type shoe of a man or woman includes a sole and heel. A separate heel is usually attached to the back half of the sole. Most shoes have some arch support built in the shoe to conform to the arch of the foot. The improvement comprises a heel connected to a plate under the arch and a spring steel plate under the arch and the heel area. The original heel of the shoe is removed.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: July 17, 1990
    Assignee: Don T. Allen
    Inventor: Don T. Allen
  • Patent number: 4927599
    Abstract: A support is provided for use in a therminonic converter to support an end of an emitter to keep it out of contact with a surrounding collector while allowing the emitter end to move axially as its temperature changes. The emitter end (34) is supported by a spring structure (44) that includes a pair of Belleville springs, and the spring structure is supported by a support structure (42) fixed to the housing that includes the collector. The support structure is in the form of a sandwich with a small metal spring-engaging element (74) at the front end, a larger metal main support (76) at the rear end that is attached to the housing, and with a ceramic layer (80) between them that is bonded by hot isostatic pressing to the metal element and metal main support. The spring structure can include a loose wafer (120) captured between the Belleville springs.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: May 22, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Daniel T. Allen
  • Patent number: 4873881
    Abstract: An electrically actuated shift mechanism (100) is provided that is mountable upon a manual mechanical change gear transmission and operable to move a shift finger (20) in an (X--X) direction into registration with a selected shift rail and then move the shift rail in a (Y--Y) direction to effect the gear shift is response to either a selected operator input signal (S.sub.1) or a speed signal (S.sub.2).
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: October 17, 1989
    Assignee: Eaton Corporation
    Inventors: Stephen A. Edelen, David T. Allen, Bill E. Zylman
  • Patent number: 4850423
    Abstract: An air preheater water jet apparatus is provided for cleaning fly ash, soot and the like from a rotating or stationary heat exchange basket on a air preheater used to improve the efficiency of a boiler in an electric utility generating plant. The air preheater cleaning apparatus includes a cleaning assembly with water jet nozzles, thereon, attached to a carriage which moves along a track, such as a channel beam, affixed radially above and adjacent to the air preheater basket. A drive assembly and an idler bracket assembly with a roller chain therebetween are disposed on the channel beam. The carriage assembly is attached to the roller chain and as the carriage is driven, the cleaning assembly is moved along the channel beam. Thus, when the basket, or the air preheater cleaning apparatus, is rotated and the carriage is moved inward, a circular path of the basket is cleaned.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: July 25, 1989
    Assignee: Halliburton Company
    Inventors: John T. Allen, Alan J. Pitts, Don M. Roberts, Randall B. Cogbill
  • Patent number: 4846769
    Abstract: A mechanical fuse for a reciprocating roller chain is provided which protects mechanical apparatus, such as a carriage assembly, from damage due to a mechanical power surge, or overload. A stirrup shaped body portion is included with a protruding member and a receiving member disposed thereon. The protruding member connects with a master link in the roller chain and the receiving member is connectable via a shear pin to either an end link in the roller chain, or the mechanical apparatus being protected. The shear pin is placed perpendicularly to the direction of the potential mechanical power surge and shears upon application of a tangential force which is greater than can be withstood by the shear pin, but less than the amount of force which will damage the mechanical apparatus, or any other drive components. Therefore, the shear pin separates and interrupts the roller chain path, relieving any mechanical overload, prior to any damage being sustained by the mechanical apparatus or roller chain.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: July 11, 1989
    Assignee: Halliburton Company
    Inventor: John T. Allen
  • Patent number: 4774774
    Abstract: A midsole for athletic shoes that stores energy. The "honey comb" midsole absorbs the body weight of the athletic and converts the force into a spring-back energy that reduces the workload of leg muscles therefore a reduction of leg muscle fatigue results.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: October 4, 1988
    Inventor: Freddie T. Allen, Jr.
  • Patent number: 4692195
    Abstract: A method for repairing and reinforcing a torn plastic tote is provided. The edges of the tears are bevelled and the tears are then welded with a plastic material which is of the same type as the material from which the plastic tote is made. A strip of plastic material is formed into a closed loop by welding the ends of the loop together. The loop is placed around the upstanding walls, preferably around the upper edge thereof and the loop is then spot welded to the upstanding walls. In an alternative embodiment, only a loop is placed around the tote and the tears are not welded.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: September 8, 1987
    Inventors: Danny T. Allen, Mark S. Allen
  • Patent number: 4557895
    Abstract: A yellow gold alloy which resembles 10 karat gold in appearance and physical properties but has a gold content substantially less than 10 karat gold. The alloy consists essentially of 11% to 16% by weight gold, 28% to 34% by weight silver, 30% to 38% by weight copper, 8% to 12% by weight palladium, 7% to 10% by weight zinc, 0.2% to 0.4% silicon, and about 0.02% boron, and is particularly well suited for use in the manufacture of rings and other jewelry articles.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: December 10, 1985
    Assignee: Herff Jones, Inc.
    Inventors: Robert J. Karamon, Robert T. Allen
  • Patent number: 4493939
    Abstract: A method and apparatus for fabricating a thermoelectric device includes forming a matrix board (12) with an array of orifices (100) formed therein. A plurality of P-type thermoelements (96) are formed and then a vacuum chuck (92) is utilized to dispose alternating ones of the elements (96) into the alternating ones of the orifices (100). A plurality of N-type elements (108) is formed and a vacuum chuck (104) is utilized to dispose alternating ones of the elements (108) into the remaining orifices (100) of the matrix (12). This forms an assembled array (52). A plurality of conductive tabs (114) is placed onto the P-type elements (98) and N-type elements (108) by a vacuum chuck (116). A second set of conductive tabs (120) is disposed on the opposite side of the assembled array by a vacuum chuck (124). A solder flow oven (54) and a solder flow oven (76) are utilized to reflow the solder on the tabs between the two operations.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: January 15, 1985
    Assignee: Varo, Inc.
    Inventors: T. Allen Blaske, Terry J. Hendricks
  • Patent number: D280156
    Type: Grant
    Filed: October 26, 1982
    Date of Patent: August 20, 1985
    Assignee: David H. Hammond
    Inventors: Richard T. Allen, David A. Hammond
  • Patent number: D308353
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: June 5, 1990
    Inventor: Marshall T. Allen