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Class Information
Number: 477/69
Name: Interrelated power delivery controls, including engine control > Transmission control > Including fluid drive > Ratio control > With planetary transmission control
Description: Subject matter wherein there is included a gear transmission* of the planetary type which is also regulated by the engine*.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7402123 |
Automatic transmission control method and system having fail-safe function |
Jul. 22, 2008 |
| 6961646 |
Automatic transmission control system with direct electronic swap-shift control |
Nov. 1, 2005 |
| 6755767 |
Speed-change control apparatus for automatic transmission |
Jun. 29, 2004 |
| 6746359 |
Shift control method for an automatic transmission |
Jun. 8, 2004 |
| 6645122 |
Control system for an automatic transmission |
Nov. 11, 2003 |
| 6508738 |
Transmission |
Jan. 21, 2003 |
| 6488605 |
Transmission system, especially for a motor vehicle |
Dec. 3, 2002 |
| 6457382 |
Method and apparatus for shifting ranges in a torque reversing mechanical transmission coupled to a hydrostatic transmission |
Oct. 1, 2002 |
| 6450912 |
Hydromechanical transmission having a continuously variable transmission ratio |
Sep. 17, 2002 |
| 6409628 |
Method and apparatus for preventing hunting between ranges in a continuously variable transmission |
Jun. 25, 2002 |
| 6122583 |
Upshift and downshift control valve system for multiple ratio automatic transmission |
Sep. 19, 2000 |
| 5911645 |
Process for operating a stepless drive unit consisting of an internal combustion engine and a power branching transmission |
Jun. 15, 1999 |
| 5809846 |
Method of power transmission in mechanical/hydraulic type transmission system |
Sep. 22, 1998 |
| 5682315 |
Method and system for controlling a split torque transmission |
Oct. 28, 1997 |
| 5636119 |
Downstream rate limiting method in transmission control |
Jun. 3, 1997 |
| 5629593 |
Output torque matching in a multi-speed electric vehicle |
May. 13, 1997 |
| 5491635 |
Arrangement and a process for controlling a starting device of a vehicle drive |
Feb. 13, 1996 |
| 5349885 |
Hydraulic control system for controlling line pressure based on backtorque and throttle rate in an automatic transmission |
Sep. 27, 1994 |
| 5135443 |
Arrangement and method for operating a variable drive unit |
Aug. 4, 1992 |
| 5131296 |
Traction drive transmission and lock-up control |
Jul. 21, 1992 |
| 5069087 |
Clutch changeover circuit for non-stage transmission |
Dec. 3, 1991 |
| 4776233 |
Hydromechanical transmission and hydromechanical speed-change mechanism |
Oct. 11, 1988 |
| 4766778 |
Inexpensive variable torque transmission with overdrive and method |
Aug. 30, 1988 |
| 4663714 |
Synchronized mid-mounted clutch for variable power train |
May. 5, 1987 |
| 4648040 |
Engine monitor/control microprocessor for continuously variable power train |
Mar. 3, 1987 |
| 4594666 |
Transmission monitor/control microprocessor for continuously variable power train |
Jun. 10, 1986 |
| 4592454 |
Hydropneumatic system for recovering braking energy for urban vehicles |
Jun. 3, 1986 |
| 4516755 |
Hydraulic winch control system |
May. 14, 1985 |
| 4368653 |
Hydromechanical transmission |
Jan. 18, 1983 |
| 4287792 |
Variable gear ratio transmission |
Sep. 8, 1981 |
| 4254672 |
Control system for a stepless variable speed transmission |
Mar. 10, 1981 |
| 4246806 |
Multi-mode hydromechanical transmission shift system |
Jan. 27, 1981 |
| 4185521 |
Hydraulic control system for a hydrostatic-mechanical transmission |
Jan. 29, 1980 |
| 4170153 |
Hydromechanical transmission |
Oct. 9, 1979 |
| 4131035 |
Hydromechanical transmission |
Dec. 26, 1978 |
| 4122732 |
Hydromechanical mechanical continuously variable transmission |
Oct. 31, 1978 |
| 4111073 |
Progressively variable transmission |
Sep. 5, 1978 |
| 4111074 |
Hydraulic control for hydromechanical transmission |
Sep. 5, 1978 |
| 4096768 |
Hydro-mechanical transmission |
Jun. 27, 1978 |
| 4084451 |
Drive-transmitting mechanisms |
Apr. 18, 1978 |
| 4082013 |
Hydrostatic transmission control |
Apr. 4, 1978 |
| 4068543 |
Hydraulic transmission control device |
Jan. 17, 1978 |
| 4043227 |
Hydromechanical transmission |
Aug. 23, 1977 |
| 3943715 |
Servo mechanism |
Mar. 16, 1976 |
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