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Class Information
Number: 475/121
Name: Planetary gear transmission systems or components > Fluid drive or control of planetary gearing > Fluid controlled mechanical clutch or brake > Speed responsive control > Ratio change
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7419452 |
Control apparatus of vehicular automatic transmission |
Sep. 2, 2008 |
| 7300375 |
Hydraulic circuit for the control of a drive train |
Nov. 27, 2007 |
| 7285066 |
Multiplexed trim valve system for an electrically variable hybrid transmission |
Oct. 23, 2007 |
| 7278944 |
Hydraulic control apparatus for automatic transmission |
Oct. 9, 2007 |
| 7001299 |
Control apparatus of automatic transmission |
Feb. 21, 2006 |
| 6994647 |
Adaptive pressure control method for achieving synchronous upshifts in a multiple-ratio transmission |
Feb. 7, 2006 |
| 6966861 |
Shift control for a two-axis automatic transmission for a vehicle |
Nov. 22, 2005 |
| 6942591 |
Hydraulic control system of a six-speed automatic transmission |
Sep. 13, 2005 |
| 6905433 |
Device for control of a hydraulically actuatable shifting element |
Jun. 14, 2005 |
| 6878086 |
Automatic transmission |
Apr. 12, 2005 |
| 6863640 |
Control apparatus and control method for automatic transmission |
Mar. 8, 2005 |
| 6846259 |
Hydraulic control system for automatic transmission |
Jan. 25, 2005 |
| 6746359 |
Shift control method for an automatic transmission |
Jun. 8, 2004 |
| 6728605 |
Vehicle speed monitoring system and method |
Apr. 27, 2004 |
| 6597978 |
Method for controlling an automatic transmission |
Jul. 22, 2003 |
| 6514165 |
Shift control system and method for automatic transmissions |
Feb. 4, 2003 |
| 6508738 |
Transmission |
Jan. 21, 2003 |
| 6471615 |
Automatic transmission for vehicle |
Oct. 29, 2002 |
| 6464610 |
Hydraulic pressure control apparatus for automatic transmission |
Oct. 15, 2002 |
| 6364802 |
Hydraulic control system for a continuously variable transmission |
Apr. 2, 2002 |
| 6319165 |
Hydraulic control device for automatic transmission |
Nov. 20, 2001 |
| 6202016 |
Shift on the go transmission system |
Mar. 13, 2001 |
| 5996435 |
Electro-hydraulic control device for power shift gearboxes |
Dec. 7, 1999 |
| 5720694 |
Hydraulic control system for automatic transmission system |
Feb. 24, 1998 |
| 5305664 |
Hydraulic control device for an automatic transmission having a shift valve and a control valve coaxially aligned in a valve chamber |
Apr. 26, 1994 |
| 5279527 |
Shiftless, continuously-aligning transmission |
Jan. 18, 1994 |
| 5207123 |
Electrohydraulic control for an automatic transmission |
May. 4, 1993 |
| 5147254 |
Torque transmission unit for the drive connection of a secondary unit with an internal combustion engine |
Sep. 15, 1992 |
| 5088968 |
Power transmission for driving vehicle |
Feb. 18, 1992 |
| 4913003 |
Stepless transmission |
Apr. 3, 1990 |
| 4328717 |
Automatic transmission |
May. 11, 1982 |
| 4299141 |
Mechanical transmission having reduced friction direct drive |
Nov. 10, 1981 |
| 4295798 |
Automatic two-speed pump assembly |
Oct. 20, 1981 |
| 4265135 |
Automotive accessory drive |
May. 5, 1981 |
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