1
Jeffrey A Crosser: Hydraulic circuit and control system therefor. Caterpillar, John W Grant, August 18, 1992: US05138838 (101 worldwide citation)

Hydraulic control of reversible hydraulic motors typically requires several different valves to provide for the various operating parameters. The subject hydraulic control circuit has only a pair of electrohydraulic control valves to provide all the typical operating parameters. Operation of the con ...


2
Racking arm for components used in well drilling operations. Swoboda J, Swoboda N, April 6, 1977: GB1469661-A (62 worldwide citation)

1469661 Hydraulic control circuits J J SWOBODA JNR and N L SWOBODA 9 July 1974 [9 July 1973] 30366/74 Heading F1P [Also in Divisions B8 and El] A racking arm for use in guiding drill pipe, drill collars and riser pipe between setback areas, a rotary table on a drilling rig, particularly an offshore ...


3
Hiroshi Arai, Yutaka Taga: Automatic transmission system for use with automobiles. Toyoto Jidosha Kogyo Kabushiki Kaisha, Stewart and Kolasch, February 10, 1976: US03937105 (52 worldwide citation)

An automatic transmission system for use with automobiles comprising a gear wheel transmission mechanism, a hydraulic control circuit and an electric computing circuit, said gear wheel transmission mechanism being changed over by said hydraulic circuit under the control of said computing circuit, wh ...


4
Jerome R Telle: Exercise isokinetic apparatus. John E Reilly, September 5, 1989: US04863161 (50 worldwide citation)

An exercise apparatus combines a main support and a weight-lifting beam pivotally mounted thereon for movement about a horizontal axis, a weight-lifting bar adapted for releasable disposition of weights thereon and an adjustable support for pivotally supporting the weight-lifting bar on the main sup ...


5
Nobuaki Miki, Mutsumi Kawamoto, Hiroyuki Amano, Tsuneo Hida, Tsuyoshi Yoshida: Electronic system for controlling an automatic transmission in response to changes in slope. Aisin Waker Kabushiki Kaisha, Sughrue Mion Zinn Macpeak and Seas, June 15, 1982: US04335428 (48 worldwide citation)

An electronic system for controlling an automatic transmission having an hydraulic control circuit comprises a large scale integrated semiconductor logic unit, a semiconductor read-only memory, a semiconductor read-write memory and input and output ports as required. The read-only memory fixedly sto ...


6
Charles Pigeon, Stephen Jones: Ski tow boat with wake control device and method for operation. Tige Boats, Flehr Hohbach Test Albritton & Herbert, August 27, 1996: US05549071 (45 worldwide citation)

An inboard power boat for towing water skiers is disclosed which incorporates a wake control device. The boat has a hull configuration in which the stern portion has a flat or semi-flat bottom. The wake control device is comprised of a single flat plate which is pivotally mounted to the stern along ...


7
Nobuaki Miki, Mutsumi Kawamoto, Kazuhiko Shibata, Tsuyoshi Yoshida, Hiroyuki Amano: Lockup controlling system for variable speed, automatic transmission. Aisin Warner Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha, Sughrue Mion Zinn Macpeak and Seas, July 12, 1983: US04393467 (42 worldwide citation)

An electronic control system is provided which controls the locking and unlocking of a variable speed automatic transmission. A hydraulic control circuit comprising a plurality of hydraulic pressure controlling valves, a plurality of flow path switching means and a plurality of solenoid valves is pr ...


8
Dennis W Person, Stanley L Pierce, Po lung Liang: Hydraulic control system for electronic transmission control. Ford Motor Company, Frank G McKenzie, Donald J Harrington, July 9, 1985: US04527448 (41 worldwide citation)

The hydraulic control circuit for an automatic transmission includes solenoid-operated clutch pressure valves which selectively connect line pressure to the selected clutch as the winding of the solenoids are energized and de-energized by an electronic control system. A solenoid feed valve and feedb ...


9
Shoji Yokoyama, Shiro Sakakibara: Hydraulic control system for a V-belt transmission. Aisin Warner Kabushiki Kaisha, Blum Kaplan Friedman Silberman & Beran, August 13, 1985: US04534243 (38 worldwide citation)

An automatic transmission provided with a combination of a belt drive continuously-variable speed transmission mechanism and a hydraulic control circuit. The belt drive continuously-variable speed transmission mechanism has an input variable-pitch pulley assembly and an output variable-pitch pulley ...


10
Carre Jean Jacques: Hydraulic control circuit. Societe Anonyme DBA, Decker Ken C, Antonis William N, August 12, 1975: US3899057 (38 worldwide citation)

A cycle hydraulic braking system is disclosed, with a generating cylinder 10 and a receiving cylinder 14, the chamber 36 and chamber 48 for generating and receiving cylinder to communicate and define a fluid-tight enclosure filled with a predetermined volume of incompressible fluid the compensating ...



Click the thumbnails below to visualize the patent trend.