1
Bela A Geczy: Thrust bearing assembly for a downhole drill motor. Smith International, Price Gess & Ubell, December 24, 1985: US04560014 (301 worldwide citation)

A bidirectional thrust bearing assembly is used between a downhole fluid motor and a rock bit for drilling oil wells. The bearing assembly has a stationary housing with radial journal bearing sleeves and a rotatable drive shaft also having radial bearing sleeves. A pair of oppositely facing thrust b ...


2
Mayer James R, Tipton Joe D: Joint breakout mechanism. Gardner Denver Company, August 1, 1972: US3680412 (122 worldwide citation)

A remotely controlled breakout mechanism grips and loosens threadably joined connections between sections of a drill string. The mechanism is coaxial with and movable along the drill string and includes stationary and rotatable gripping assemblies which are independently operable for interengagement ...


3
William A Smith: Fluid motor driven blood pump. The Cleveland Clinic Foundation, Fay Sharpe Beall Fagan Minnich & McKee, September 8, 1992: US05145333 (97 worldwide citation)

A rotary blood pump includes an impeller in a pump chamber driven by a fluid motor. In a first preferred embodiment, the fluid motor includes a rotary member having a series of cupped fluid reactive surfaces that receive a tangential inlet pressurized fluid flow. The cupped surfaces direct the fluid ...


4
Porter Wilson B, Klein Harold T: Earth drilling machine. James S Robbins and Associates, The Robbins Company, Graybeal Barnard Uhlir & Hughes, May 7, 1974: US3808916 (93 worldwide citation)

A travelling support frame is mounted for up and down travel by two parallel guide columns secured at their lower ends to a base frame. A portion of the traveling frame projects laterally of the drive columns and supports two drive motors, two reducing gearing assemblies, a collector gearing assembl ...


5
Troy O McBride, Benjamin R Bollinger: Systems and methods for energy storage and recovery using compressed gas. SustainX, Bingham McCutchen, November 16, 2010: US07832207 (88 worldwide citation)

The invention relates to methods and systems for the storage and recovery of energy using open-air hydraulic-pneumatic accumulator and intensifier arrangements that combine at least one accumulator and at least one intensifier in communication with a high-pressure gas storage reservoir on a gas-side ...


6
Dvorak Miloslav, Lepsi Arnost: Involute pump. Leybold Heraeus Verwaltung, August 17, 1971: US3600114 (74 worldwide citation)

A fluid pump or motor is formed of two disks which are mounted parallel to each other and for rotation relative to each other. The opposed surfaces of the disks include substantially plane portions and projections extending from the substantially plane portions and interengaging with each other. The ...


7
Robert Moshe Lisniansky: Regenerative adaptive fluid motor control. February 26, 2002: US06349543 (73 worldwide citation)

A regenerative adaptive fluid motor control system integrating a load adaptive fluid motor control system and a load adaptive energy regenerating system having an energy accumulator. The fluid motor control system includes a primary variable displacement pump (


8
McAlister Roy E: Vapor pressurized hydrostatic drive. March 14, 1972: US3648458 (71 worldwide citation)

A hydrostatic drive system generally of the type wherein vapor is alternately directed into one of two reservoir tanks so that working fluid in that tank is forced out of the tank by pressure of the vapor and through a fluidic motor to generate a mechanical output before it returns to refill the oth ...


9
Donald L Bianchetta: Fluid motor control system providing speed change by combination of displacement and flow control. Caterpillar Tractor Co, Phillips Moore Weissenberger Lempio & Majestic, October 19, 1982: US04354420 (70 worldwide citation)

A fluid motor control system (11) assures that automatic changes of motor displacement, which are initiated by occurrence of a predetermined operational condition in the system (11), result in a change of motor speed of the desired magnitude. Flow adjustment elements (76) respond to a displacement i ...


10
John E Tschirky: Drilling and casing landing apparatus and method. Smith International, Bernard Kriegel, Philip Subkow, Newton H Lee Jr, January 9, 1979: US04133396 (69 worldwide citation)

Casing is run into a well bore hole on a running pipe string. Fluid motor and drill apparatus is supported in the casing, with the drill extending below the lower end of the casing to drill the bore hole in advance of the casing. For subsea drilling operations, the casing is suspended from a riser h ...