ZF Friedrichshafen AG
ZF FriedriActive Patents
0
Total Holdings
102
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| DE19704013A1 | Safety steering column | Expired / Lapsed | 1997-02-04 | — | 0 | Details |
| DE19600734A1 | Motor vehicle system control method w.r.t. external conditi… | Expired / Lapsed | 1996-01-11 | — | 0 | Details |
| DE4323601A1 | Drive arrangement for a hybrid vehicle | Expired / Lapsed | 1993-07-09 | — | 0 | Details |
| DE4323602A1 | Drive arrangement for a hybrid vehicle | Expired / Lapsed | 1993-07-09 | — | 0 | Details |
| DE4237669A1 | Contact appts. for gear lever to indicate position - has tw… | Expired / Lapsed | 1992-11-07 | — | 0 | Details |
| DE4100937A1 | Rotary oscillation damping device for vehicle transmission … | Expired / Lapsed | 1991-01-15 | — | 0 | Details |
| DE4040576A1 | Drive system for vehicle IC engine - switches to charging m… | Expired / Lapsed | 1990-12-19 | — | 0 | Details |
| DE4017961A1 | Vehicle double clutch gear change control system - has sync… | Expired / Lapsed | 1990-06-05 | — | 0 | Details |
| DE3932790A1 | Fail=safe steering for rear wheels - has rotating field mot… | Expired / Lapsed | 1989-09-30 | — | 0 | Details |
| DE3827091A1 | Control device for the automatic shifting of multistage gea… | Expired / Lapsed | 1988-08-10 | — | 0 | Details |
| DE3823210A1 | HYDRODYNAMIC TORQUE CONVERTER WITH BRIDGE CLUTCH AND DRIVE-… | Expired / Lapsed | 1988-07-08 | — | 0 | Details |
| DE3820874A1 | Clutch device | Expired / Lapsed | 1988-06-21 | — | 0 | Details |
| DE3537994A1 | ELECTROMAGNETICALLY ACTUATED LOCKING CLUTCH FOR MOTOR VEHIC… | Expired / Lapsed | 1985-10-25 | — | 0 | Details |
| DE3528389A1 | ARRANGEMENT FOR REGULATING THE DRIVE SLIP OF A MOTOR VEHICLE | Expired / Lapsed | 1985-08-07 | — | 0 | Details |
| DE3412961A1 | Split flywheel | Expired / Lapsed | 1984-04-06 | — | 0 | Details |
| DE3241248A1 | Friction clutch with sprung diaphragm-spring clamping | Expired / Lapsed | 1982-11-09 | — | 0 | Details |
| DE3220083A1 | Method and device for changing the maximum speed of vehicle… | Expired / Lapsed | 1982-05-28 | — | 0 | Details |
| DE3118252A1 | Brake device | Expired / Lapsed | 1981-05-08 | — | 0 | Details |
| GB2064702A | Axle drive and parking brake mechanism | Expired / Lapsed | 1980-10-30 | — | 9 | Details |
| DE3040120A1 | Automobile differential with selective lock - with control … | Expired / Lapsed | 1980-10-24 | — | 0 | Details |
| DE3028250A1 | Motor-vehicle friction clutch operating mechanism - has pro… | Expired / Lapsed | 1980-07-25 | — | 0 | Details |
| DE3025282A1 | Friction brake for self locking differential - has multipla… | Expired / Lapsed | 1980-07-04 | — | 0 | Details |
| DE3004067A1 | Servo controlled car transmission - has pneumatic-hydraulic… | Expired / Lapsed | 1980-02-05 | — | 0 | Details |
| DE2950146A1 | Vibration damper for IC engine - has damper springs to tran… | Expired / Lapsed | 1979-12-13 | — | 0 | Details |
| DE2939566A1 | MAGNETOSTRICTIVE MEASURING PROCESS, IN PARTICULAR FOR TORQU… | Expired / Lapsed | 1979-09-29 | — | 0 | Details |
| DE2931515A1 | Transmission with freewheel control - has drive clutch and … | Expired / Lapsed | 1979-08-03 | — | 0 | Details |
| DE2931513A1 | Vehicle clutch with freewheel facility - has separate servo… | Expired / Lapsed | 1979-08-03 | — | 0 | Details |
| GB2028240A | Damming return flow in a rotary power-assisted steering val… | Expired / Lapsed | 1979-07-13 | — | 8 | Details |
| DE2902433A1 | IC engine idling torsional vibration damper - has magnetic,… | Expired / Lapsed | 1979-01-23 | — | 0 | Details |
| FR2409900A1 | STEERING MECHANISM EQUIPPED WITH A HYDRAULIC ASSISTANCE DEV… | Expired / Lapsed | 1978-11-16 | — | 0 | Details |
| GB2006701A | Power-assisted steering system for motor vehicles | Expired / Lapsed | 1978-10-19 | — | 0 | Details |
| FR2406557A1 | ASSISTED STEERING MECHANISM FOR MOTOR VEHICLES | Expired / Lapsed | 1978-10-18 | — | 0 | Details |
| GB2004822A | Hydraulic power-assisted steering system for vehicles | Expired / Lapsed | 1978-09-21 | — | 0 | Details |
| DE2835422A1 | Workpiece transport pallet moving between machining station… | Expired / Lapsed | 1978-08-12 | — | 0 | Details |
| DE2821493A1 | Vibration absorbing engine mounting for vehicle - has radia… | Expired / Lapsed | 1978-05-17 | — | 0 | Details |
| DE2758659A1 | HYDROSTATIC-MECHANICAL TRANSMISSION WITH POWER SHARING | Expired / Lapsed | 1977-12-29 | — | 0 | Details |
| DE2758660A1 | CONTINUOUSLY VARIABLE TRANSMISSION WITH POWER SHARING | Expired / Lapsed | 1977-12-29 | — | 0 | Details |
| DE2734182A1 | DEVICE FOR MEASURING STEERING TORQUE AND STEERING ANGLE IN … | Expired / Lapsed | 1977-07-29 | — | 0 | Details |
| DE2716960A1 | HYDROSTATIC-MECHANICAL TRANSMISSION WITH POWER SHARING | Expired / Lapsed | 1977-04-16 | — | 0 | Details |
| DE2658195B1 | Pressure medium circuit for a hydrodynamic-mechanical compo… | Expired / Lapsed | 1976-12-22 | — | 0 | Details |
| DE2605228A1 | Friction coupling with axial ring piston - has piston retur… | Expired / Lapsed | 1976-02-11 | — | 0 | Details |
| DE2541600B1 | Electro-hydraulic switching device for power shift gearboxe… | Expired / Lapsed | 1975-09-18 | — | 0 | Details |
| DE2512431A1 | Tractor with automatic control for four wheel drive - has s… | Expired / Lapsed | 1975-03-21 | — | 0 | Details |
| FR2279962A1 | Hydrostatic automobile steering system distributor - has la… | Expired / Lapsed | 1974-07-26 | — | 0 | Details |
| DE2421670A1 | Machine for generating gears with convex teeth - rolls conv… | Expired / Lapsed | 1974-05-04 | — | 0 | Details |
| DE2406208B2 | PRESSURE REGULATING DEVICE FOR THE HYDRAULIC SHIFTING DEVIC… | Expired / Lapsed | 1974-02-09 | — | 0 | Details |
| DE2251536A1 | HYDROSTATIC TORQUE CONVERTER FOR TRAVEL DRIVES | Expired / Lapsed | 1972-10-20 | — | 0 | Details |
| DE2131631A1 | Electronic control of the converter bridging clutch of a mo… | Expired / Lapsed | 1971-06-25 | — | 0 | Details |
| DE2116423A1 | Friction clutch with a tilting circle that is independent o… | Expired / Lapsed | 1971-04-03 | — | 0 | Details |
| DE2055345A1 | Synchronizing ring in manual transmissions | Expired / Lapsed | 1970-11-11 | — | 0 | Details |
| DE2053655A1 | Circuit arrangement for the automatic synchronization of th… | Expired / Lapsed | 1970-10-31 | — | 0 | Details |
| DE2043197A1 | Device for operating a hydrostatic machine | Expired / Lapsed | 1970-09-01 | — | 0 | Details |
| DE2034503B2 | CONTROL DEVICE FOR A VEHICLE POWER PLANT | Expired / Lapsed | 1970-07-11 | — | 0 | Details |
| DE2013079B2 | Digital control device for automatically switchable gearbox… | Expired / Lapsed | 1970-03-19 | — | 0 | Details |
| DE2013079A1 | DEVICE FOR DIGITAL CONTROL OF AUTOMATIC SWITCHING DEVICES F… | Expired / Lapsed | 1970-03-19 | — | 0 | Details |
| DE2012234A1 | Device for controlling the lock-up clutch of the hydrodynam… | Expired / Lapsed | 1970-03-14 | — | 0 | Details |
| DE7007770U | CONTROL DEVICE. | Expired / Lapsed | 1970-03-04 | — | 0 | Details |
| DE1920696A1 | Height-adjustable base for televisions or the like. | Expired / Lapsed | 1969-04-23 | — | 0 | Details |
| DE1806775B2 | FLOW METER | Expired / Lapsed | 1968-11-02 | — | 0 | Details |
| DE1804335A1 | Double friction clutch with spring band suspension | Expired / Lapsed | 1968-10-22 | — | 0 | Details |
| DE1680049A1 | Clutch disc with vibration damper | Expired / Lapsed | 1968-01-27 | — | 0 | Details |
| DE1680669A1 | Clutch disc with vibration damper | Expired / Lapsed | 1965-11-20 | — | 0 | Details |
| DE1480666A1 | Control unit for hydraulic steering, in particular for moto… | Expired / Lapsed | 1960-10-14 | — | 0 | Details |
| DE1138652B | Hydraulic power steering for motor vehicles | Expired / Lapsed | 1958-12-08 | — | 0 | Details |
| DE1139399B | Hydraulic power steering for motor vehicles | Expired / Lapsed | 1958-12-08 | — | 0 | Details |
| GB782092A | Improvements in or relating to the electrical measurement o… | Expired / Lapsed | 1955-05-23 | — | 0 | Details |
| GB719000A | Improvements in or relating to automobile clutch | Expired / Lapsed | 1952-08-06 | — | 0 | Details |
| DE4404791C1 | Structural unit comprising an internal combustion engine an… | Expired / Lapsed | 1994-02-08 | 1995-03-30 | 0 | Details |
| US4913249A | Auxiliary power steering mechanism, especially for motor ve… | Expired / Lapsed | 1987-07-14 | 1990-04-03 | 9 | Details |
| US4586595A | Clutch disc under-toad and idling damping means | Expired / Lapsed | 1984-12-11 | 1986-05-06 | 16 | Details |
| US4443169A | Gear pump | Expired / Lapsed | 1981-01-28 | 1984-04-17 | 6 | Details |
| US4421010A | Steering gear for motor vehicles | Expired / Lapsed | 1981-07-15 | 1983-12-20 | 20 | Details |
| DE3040120C2 | Lockable differential gear for vehicles | Expired / Lapsed | 1980-10-24 | 1983-06-23 | 0 | Details |
| US4373598A | Auxiliary steering for motor vehicles | Expired / Lapsed | 1980-05-07 | 1983-02-15 | 22 | Details |
| US4344284A | Hydraulic auxiliary power steering | Expired / Lapsed | 1980-01-22 | 1982-08-17 | 14 | Details |
| US4335749A | Rotary slide steering valve for auxiliary power steerings o… | Expired / Lapsed | 1979-08-21 | 1982-06-22 | 16 | Details |
| US4241804A | Servo steering system for motor vehicles | Expired / Lapsed | 1978-10-19 | 1980-12-30 | 13 | Details |
| US4200030A | Servo steering gear | Expired / Lapsed | 1978-08-29 | 1980-04-29 | 7 | Details |
| US4085817A | Power steering device | Expired / Lapsed | 1976-08-23 | 1978-04-25 | 8 | Details |
| DE2227796C3 | Device for adjusting a hydrostatic torque converter and for… | Expired / Lapsed | 1972-06-08 | 1975-08-14 | 0 | Details |
| US3878763A | Hydraulic steering control system | Expired / Lapsed | 1973-10-04 | 1975-04-22 | 19 | Details |
| US3831695A | All-wheel drive for motor vehicles | Expired / Lapsed | 1973-08-08 | 1974-08-27 | 11 | Details |
| US3817155A | Hydraulic rack and pinion steering gear | Expired / Lapsed | 1972-12-01 | 1974-06-18 | 14 | Details |
| DE1680049C3 | Clutch disc with vibration damper | Expired / Lapsed | 1968-01-27 | 1973-11-08 | 0 | Details |
| US3732755A | Digital shift control for vehicular transmission | Expired / Lapsed | 1971-03-18 | 1973-05-15 | 8 | Details |
| FR2139461A5 | FR2139461A5 - - Google Patents | Expired / Lapsed | 1972-05-12 | 1973-01-05 | 0 | Details |
| US3602101A | Auxilliary power steering, especially for motor vehicles | Expired / Lapsed | 1969-12-22 | 1971-08-31 | 21 | Details |
| US3500854A | Valve device | Expired / Lapsed | 1967-03-27 | 1970-03-17 | 0 | Details |
| US3414101A | Driven clutch plate with flexible center | Expired / Lapsed | 1966-11-16 | 1968-12-03 | 0 | Details |
| US3354744A | Shifting device for motor vehicle transmissions | Expired / Lapsed | 1965-07-28 | 1967-11-28 | 2 | Details |
| US3265051A | Breaker unit for the ignition system of an internal combust… | Expired / Lapsed | 1964-06-04 | 1966-08-09 | 2 | Details |
| US3252380A | Auxiliary power steering arrangement, especially for motor … | Expired / Lapsed | 1963-07-31 | 1966-05-24 | 2 | Details |
| US3242824A | Hydraulic power steering system | Expired / Lapsed | 1963-07-31 | 1966-03-29 | 2 | Details |
| US3032014A | Power steering devices | Expired / Lapsed | 1959-07-02 | 1962-05-01 | 0 | Details |
| US3013792A | Diaphragm spring arrangement | Expired / Lapsed | 1961-04-04 | 1961-12-19 | 0 | Details |
| US3013447A | Eccentric drive transmission mechanism | Expired / Lapsed | 1961-02-20 | 1961-12-19 | 0 | Details |
| US2994000A | Photoelectric program control | Expired / Lapsed | 1960-09-13 | 1961-07-25 | 0 | Details |
| US2940559A | Clutch reengagement control device | Expired / Lapsed | 1957-01-14 | 1960-06-14 | 0 | Details |
| FR1205363A | Device for automatically adjusting progressive gear change … | Expired / Lapsed | 1958-04-08 | 1960-02-02 | 0 | Details |
| DE955839C | Drive a pressure fluid kit pump, in particular a pressure p… | Expired / Lapsed | 1954-04-04 | 1957-01-10 | 0 | Details |
| DE679643C | Gear differential for ground vehicles | Expired / Lapsed | 1935-06-06 | 1939-08-12 | 0 | Details |
| US2012292A | Power transmitting mechanism in motor driven vehicles | Expired / Lapsed | 1932-11-25 | 1935-08-27 | 0 | Details |