1
Steve B Wilson: Pilot casing mill. John M Harrison, July 2, 1991: US05027914 (171 worldwide citation)

A pilot casing mill for removing unwanted pipe from a well bore, which includes a cylindrical pilot having helical vanes and adapted for mounting on one end of a cylindrical mill body. The mill body is provided with longitudinal slots which receive outwardly-extending blades fitted with multiple cut ...


2
Stephen P Lane: Cantilever-weighted golf putter. John M Harrison, November 5, 1996: US05571053 (147 worldwide citation)

A cantilever-weighted golf putter which is characterized by an elongated putter head having a rounded bottom and sides and a flat top, with a longitudinal heel bore and toe bore provided in the heel and toe, respectively, of the putter head. A pair of threaded plugs fitted with a central opening and ...


3
Dann A Schwartz, John J Sheridan: Thermoformed plastic dental retainer and method of construction. Raintree Essix, John M Harrison, December 2, 1997: US05692894 (134 worldwide citation)

A thermoformed plastic dental retainer and method of selectively straightening crooked or maloccluded teeth and retaining the straightened teeth using the retainer. The dental retainer is constructed by first forming an impression of a patient's upper or lower dentition and constructing a cast from ...


4
William O Cobb: Tubing anchor assembly. John M Harrison, March 3, 1987: US04646827 (97 worldwide citation)

A tubing anchor assembly for seating and supporting coiled tubing in a tubing head, which includes as a first element, a slip assembly characterized by multiple slip segments inserted in the slip bowl of the tubing head and each provided with a bevelled top face and a vertically oriented dove tail s ...


5
Henry A Bernat: Downhole coiled tubing recovery apparatus. John M Harrison, October 15, 2002: US06464014 (89 worldwide citation)

A downhole coiled tubing recovery apparatus and method which utilizes vibration and resonant vibration in particular, to remove coiled tubing and/or other objects which are stuck or jammed downhole in a well. In a preferred embodiment the coiled tubing recovery apparatus includes an oscillating appa ...


6
C Calvin Braddock: Container with dual dispensers. John M Harrison, January 9, 1996: US05482172 (82 worldwide citation)

A container with dual dispensers for allowing easy and complete dispensing of the container contents from either end of the container. In a first embodiment the container is characterized by a receptacle provided with a top dispenser on the upper end and a bottom dispenser on the lower end. The disp ...


7
James S Watson: Cementing plug container and method of use thereof. Razorback Oil Tools, John M Harrison, January 24, 1984: US04427065 (82 worldwide citation)

A cementing plug container for enclosing and injecting cementing plugs into the casing of an oil or gas well to reduce contamination on the interface between the well fluid and the cement, which container includes a shaped housing containing one or more plugs, a plug release mechanism for each plug, ...


8
Denis V Androsov: Injector for turbine engines. B B A Research & Development, John M Harrison, August 19, 1997: US05657631 (74 worldwide citation)

An injector for turbine engines which includes a shaped injector core fitted with an eccentric spinner inlet communicating with a cylindrical, annular fuel spinner chamber and a preheater or evaporator for preheating and vaporizing fuel, wherein the vaporized fuel is eccentrically injected into the ...


9
William S Strange Jr: Drill bit with forward sweep cutting elements. John M Harrison, August 22, 1995: US05443565 (74 worldwide citation)

A drill bit characterized by a body fitted with multiple, spaced blades having a forward sweep relative to the center of the bit and cutting elements embedded in the blades at a selected back rake and side rake. In a preferred embodiment the cutting elements are cylindrical and are shaped to define ...


10
David I Grable: Portable basketball goal. John M Harrison, July 26, 1988: US04759545 (69 worldwide citation)

A portable basketball goal for location on the pool deck of a swimming pool, which includes a base adapted to seat on the pool deck and internally receive a first quantity of water for ballast and externally receive a second quantity of water or other ballast, a backboard support extending upwardly ...