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Class Information
Number: 477/150
Name: Interrelated power delivery controls, including engine control > Transmission control > Transmission controlled by engine > By input manifold pressure or engine fuel control > Servo motor timing > With fluid accumulator
Description: Subject matter wherein a variable enclosed space is placed in communication with the chamber to control the buildup or release of fluid in such chamber.










Sub-classes under this class:

Class Number Class Name Patents
477/152 Electric valve control 43
477/151 Engine parameter controls back pressure 46


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8591365 Transmission hydraulic control system having an accumulator Nov. 26, 2013
8591381 System and method for controlling an automatic engine restart Nov. 26, 2013
8454477 Power transmitting device and vehicle having same mounted thereon Jun. 4, 2013
8382626 Transmission hydraulic control system having an accumulator Feb. 26, 2013
8078370 Hydraulic or pneumatic control of an automated shift transmission Dec. 13, 2011
7892142 Hydraulically servocontrolled transmission for a road vehicle provided with an internal combustion engine Feb. 22, 2011
7292922 Target volume based torque phase control during upshift Nov. 6, 2007
7033297 Shift control apparatus for automatic transmission Apr. 25, 2006
6702714 Apparatus for controlling vehicle automatic transmission Mar. 9, 2004
6666794 Apparatus and method for controlling automatic transmission Dec. 23, 2003
6397695 Control apparatus for hydraulically-operated vehicular transmission Jun. 4, 2002
6162147 Automatic transmission hydraulic circuit Dec. 19, 2000
6146311 Automatic transmission hydraulic circuit Nov. 14, 2000
6077192 Control apparatus for hydraulically operated vehicular transmission Jun. 20, 2000
5984835 Hydraulic control system for automatic transmission Nov. 16, 1999
5976057 Gear shift time automatic adjusting apparatus in automatic transmission Nov. 2, 1999
5899831 Automatic transmission upshift control apparatus May. 4, 1999
5882278 Upshift control device for automatic transmission Mar. 16, 1999
5876304 Up-shift control apparatus to prevent engine racing by increasing the back pressure of an accumulator of automatic transmission Mar. 2, 1999
5810694 Control system for automatic transmission Sep. 22, 1998
5674154 Hydraulic control system for automatic transmission Oct. 7, 1997
5626533 Hydraulic control system of an automatic transmission used in a vehicle May. 6, 1997
5591103 Hydraulic control circuit for hydraulically operated vehicular transmission Jan. 7, 1997
5580333 Automatic transmission control system for automobiles Dec. 3, 1996
5573478 Quick shift hydraulic control for a two stage jump shift Nov. 12, 1996
5565001 Hydraulic bypass to back pressure chamber of a clutch accumulator Oct. 15, 1996
5542888 Automatic transmission control system with variable pressure discharge Aug. 6, 1996
5536221 Retrofit means for adjusting shift timing in an existing automatic transmission Jul. 16, 1996
5509868 Governor interlock valve Apr. 23, 1996
5492028 Trimmer valve with flow retention Feb. 20, 1996
5434779 Adaptive pressure control for an automatic transmission Jul. 18, 1995
5399131 Automatic transmission control system having two accumulators for four clutches controlled by a single accumulator back pressure valve Mar. 21, 1995
5397284 Shift control method and system for automatic transmission Mar. 14, 1995
5393273 Powertrain and control having a plurality of accumulators Feb. 28, 1995
5239896 Hydraulic servomechanism control system in automatic transmission Aug. 31, 1993
5205192 Fail-safe solenoid valve apparatus for controlling oil pressure for vehicular automatic transmission Apr. 27, 1993
5163342 Adaptive transmission pressure control with run-through detection Nov. 17, 1992
5144866 Shift control system for automatic transmission Sep. 8, 1992
5138906 Shift control system, and process for automatic transmissions Aug. 18, 1992
5136898 Hydraulic system for controlling engagement of frictional coupling in automatic transmission Aug. 11, 1992
5133231 Hydraulic control system for automatic transmission Jul. 28, 1992
5125295 Method for speed stage shifting of automatic transmission with incipient back pressure control Jun. 30, 1992
5117712 Shift control device for an automatic transmission Jun. 2, 1992
5113724 Control system for an automatic automotive transmission May. 19, 1992
5111719 Shift control to engine braking or reverse drive May. 12, 1992
5058461 Automatic transmission control device Oct. 22, 1991
5050460 Shift control system for automatic transmission Sep. 24, 1991
5038637 Accumulator arrangement for automatic transmission control circuit Aug. 13, 1991
5033330 Transient control of shift in auxiliary gearing for quick engine braking Jul. 23, 1991
5033331 Hydraulic control device for automatic transmission for vehicle having clutch operable in two speed stages and two parallel hydraulic pressure supply passages therefor Jul. 23, 1991

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