1
Hamid Najmolhoda: Proportional variable force solenoid control valve. Hi Ram, Leon E Redman, Malcolm L Sutherland, January 29, 1991: US04988074 (104 worldwide citation)

A proportional variable force solenoid control valve with an armature reciprocably movable within the bore hole of a coreless solenoid bobbin in proportion to applied electrical current between positions corresponding to a closed valve position and a fully open position. The positioning of the armat ...


2
Arnold D Nielsen: Variable force solenoid. Ford Motor Company, Frank G McKenzie, Donald J Harrington, January 13, 1987: US04635683 (83 worldwide citation)

A variable force solenoid for operating a hydraulic pressure regulating valve which includes an actuator shaft aligned with the central axis of the valve and solenoid, a coil of electrical conducting wire, a cylindrical core on which the wire is wound and through which the induced magnetic flux flow ...


3
George H Studtmann, James R Ward, Terry L Forbes: Variable force solenoid hydraulic control valve. Borg Warner Automotive Electronic & Mechanical Systems Corporation, Willian Brinks Olds et al, May 5, 1992: US05110087 (42 worldwide citation)

An improved electrically actuated solenoid is used to regulate the function of a hydraulic flow control valve. The solenoid directs a control valve to generate a predetermined output pressure as a function of the solenoid input current. The working air gap surface area is increased by locating it at ...


4
Ellsworth S Miller, Michael Slavin, Ching C Ling: Variable force solenoid pressure regulator for electronic transmission controller. Lectron Products, Harness Dickey & Pierce, August 14, 1990: US04947893 (32 worldwide citation)

A variable force solenoid valve assembly is provided for use in an automatic transmission controller for controllably reducing a fluid inlet pressure to a desired outlet control pressure. The invention includes a variable force solenoid assembly secured to a valve body assembly. The valve body assem ...


5
George E Lemieux, Tom T Tibbles: Electronic and hydraulic control system for automatic gear change transmission. Ford Motor Company, Frank G McKenzie, Donald J Harrington, September 28, 1982: US04351206 (31 worldwide citation)

A manual selector valve, whose setting is controlled by the vehicle operator, distributes flow from a fluid pump to an ON-OFF valve and to a hydraulic clutch which on being engaged disposes the transmission for forward drive. Two ON-OFF valves act as pressure distributors and enable the manual valve ...


6
David L Becker, John W Curnow, Donald J West, Craig A Carlson: Variable force solenoid valve. Lectron Products, Harness Dickey & Pierce, May 7, 1996: US05513832 (30 worldwide citation)

A combined bearing/diaphragm seal for use in a solenoid valve assembly or the like is disclosed which provides a flexible fluid seal between the solenoid sub-assembly and the valve sub-assembly. The solenoid and valve sub-assemblies communicate mechanically via a portion of a solenoid armature which ...


7
Hamid Najmolhoda: Proportional variable force solenoid control valve and transmission fluid control device. Saturn Electronics & Engineering, Edward J Timmer, March 18, 1997: US05611370 (28 worldwide citation)

A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a movable valve for controlling the pressure of pressurized fluid in the fluid control system and a so ...


8
Hamid Najmolhoda, Charles J Mullally: Proportional variable force solenoid control valve. Saturn Electronics & Engineering, December 7, 1999: US05996628 (26 worldwide citation)

A proportional variable force solenoid valve comprises a non-magnetic housing having a solenoid and a permanent magnet armature movable by the solenoid in response to current applied to the solenoid, a coil compression spring for biasing the armature in a direction to establish a valve fluid pressur ...


9
Hamid Najmolhoda, David L Seid, David A Nezwek, John A Cruden Jr: Proportional variable force solenoid control valve with armature damping. Saturn Electronics & Engineering, Edward J Timmer, November 16, 1999: US05984259 (26 worldwide citation)

Proportional variable force solenoid valve for controlling the pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, and a biasing spring for biasing the armature ...


10
John A Ness, Robert A Dayton: Variable force solenoid operated valve assembly with dampener. Eaton Corporation, Roger A Johnston, December 29, 1998: US05853028 (26 worldwide citation)

A variable force solenoid operated pressure control valve of the type having a force balanced spool moveably controlled energization of the solenoid for modulating the discharge pressure of the valve at its control outlet when the valve is supplied at its inlet with fluid of a supply pressure. The s ...