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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7428853 | Transmission apparatus having a clutch A vehicle transmission apparatus includes an engine generating a driving force; a transmission having, therein, at least one input shaft being connectable to the engine and an output shaft connected to a drive wheel, the transmission being capable of establishing, t... | 09/30/2008 |
| 7318515 | Electromagnetic brake for a multiple-ratio power transmission in a vehicle powertrain An electromagnetic brake, including an electromagnetic brake actuator coil surrounding a power input shaft for a multiple-ratio transmission in a vehicle powertrain, is disclosed. An electromagnetic flux flow path for the actuator coil is electromagnetically isolate... | 01/15/2008 |
| 7278940 | Powertrain with electrically variable transmission providing improved gradeability A powertrain includes an engine with an engine output member and a transmission with two motor/generators and a transmission input member operatively connected to the engine output member. A control unit is configured to selectively cause a device to resist or preve... | 10/09/2007 |
| 7267634 | Drive device for working vehicle and method of controlling the drive of working vehicle The present invention provides a drive device for a working vehicle whereby gear change shock during the forward/reverse running changeover action can be reduced while achieving shortening of cycle time and protecting various clutch mechanisms in the transmission. I... | 09/11/2007 |
| 7178619 | Electrically powered vehicle drive control device and electrically powered vehicle drive control method A vehicle including an electrically powered machine, a parking gear mechanically connected to the electrically powered machine, a parking lock mechanism that locks the parking gear, a sensor that detects a rotor position of the electrically powered machine, and a co... | 02/20/2007 |
| 6976935 | Method and apparatus for operating a motor vehicle A method and apparatus for transmitting a torque and for operating a motor vehicle having a drive motor with an automated or automatic transmission in the drive train. A driver-identifying lock recognition system, as well as a transmission control unit that includes... | 12/20/2005 |
| 6938509 | Transmission shift control for selecting forward, reverse, neutral and park, and method of operation of the same A three transmission position shift control includes a forward position, a neutral position and a reverse position, and a switch or button operable for engaging a park brake or park lock when in the neutral position. The control can include a shift lever shiftable o... | 09/06/2005 |
| 6915872 | Cruise control system A cruise control system for use in connection with a control arm linked to a swash plate that is moveable to provide the swash plate with a plurality of non-discrete angular orientations to affect fluid displacement of a hydraulic pump and a return to neutral mechan... | 07/12/2005 |
| 6854571 | Electromagnetic brake and drive force distributing apparatus for vehicle using the electromagnetic brake An electromagnetic brake interposed between a fixed housing and a rotating member. The electromagnetic brake includes a multiplate brake mechanism, a ringlike core member fixed in the fixed housing, an annular exciting coil accommodated in an annular groove formed o... | 02/15/2005 |
| 6837357 | Drive unit for actuating a parking brake in a vehicle A compact drive unit for actuating parking brakes is provided. The drive unit has a reduction gear that is formed by a two-stage belt drive, in combination with a drive motor that is made up of a brushless direct current motor. The two-stage belt drive preferably co... | 01/04/2005 |
| 6811001 | Electromagnetic brake An electromagnetic brake, interposed between a stationary housing and a rotational member, includes a multi-plate brake mechanism, a ring-like core member fixed within the housing, an exciting coil accommodated in a groove in the core member, and a ring-like armatur... | 11/02/2004 |
| RE38615 | System and method for decreasing ratio changing time in electronically enhanced powertrain systems A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase the decay ... | 10/12/2004 |
| 6659256 | Two-wheel and four-wheel driving change-over device for vehicle A two-wheel and four-wheel driving change-over device for a vehicle is provided. A change-over unit intermittently performs power transmission for the power transmission mechanism. The change-over unit includes a driving shaft connected to a driving side,... | 12/09/2003 |
| 6498448 | Motor break releasing device A motor brake releasing device includes an electromagnetic brake for locking a motor shaft and a switch mounted between the electromagnetic brake and a releasing-power-supply for the brake. The switch can be operated by an AND signal produced by a motor d... | 12/24/2002 |
| 6364085 | Actuator with slipping prevention structure An actuator for driving a load includes a driving motor for driving and operating an output shaft, and a slipping prevention unit for preventing a slipping of the output shaft due to an external force from a load side. The slipping prevention unit include... | 04/02/2002 |
| 6273232 | Electric parking lock device In an electric parking lock device having a motor for generating a drive force for engagement and release of a parking lock pawl from a parking lock gear in response to a command output from a selector switch. A compression spring if used for applying a f... | 08/14/2001 |
| 6250445 | Ball ramp inertia brake oil blocking ring In a transmission inertia brake a ball ramp mechanism is used to load a clutch pack to slow a rotating transmission shaft where the clutch pack is carried on a one piece drive assembly having a gear section for meshing with a transmission gear, an extensi... | 06/26/2001 |
| 6123183 | Rotation transmission device A rotation transmission device including a clutch having an inner member, an outer ring, and engaging elements provided between the inner member and the outer ring for selective transmission and shutoff of rotation power between the inner member and the o... | 09/26/2000 |
| 5855264 | Vehicle transmission system fitted with an electrical retarder A vehicle transmission system comprises a shaft and an electrical eddy current retarder itself comprising an annular inductor stator and a rotor. The rotor is connected to the shaft via independent fixing arms extending inwards to the free ends of axial m... | 01/05/1999 |
| 5842376 | System and method for decreasing ratio changing time by actuating inertia brake while the master clutch is engaged in electronically enhanced powertrain systems A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase... | 12/01/1998 |
| 5743146 | Interlocking device The locking device for locking of two relative to each other longitudinally moveable elements comprises an electromagnet including a magnetic yoke, an operating winding and a magnet armature. The operating winding and magnetic yoke are positionally fixed ... | 04/28/1998 |
| 5696679 | Integrated electronic control of pawl-gear park function of an automatic transmission An electronically actuated park control system for an automatic transmission for a wheeled vehicle including a transmission range selection control assembly that sends to a powertrain control module a park signal, the module being adapted to deliver an ou... | 12/09/1997 |
| 5677658 | Electrically operated control module for a locking mechanism An electrical operated control module for a locking mechanism in which is located a locking mechanism and an electrically operated actuator member. The electrically operated actuator member has a magnetic force associated therewith and is actuated by a me... | 10/14/1997 |
| 5667282 | Electronic parking brake device for vehicles and control method therefor An electronic parking brake device for a vehicle including a slope sensor adapted to sense the slope of a road on which the vehicle is parked, and a parking brake control unit adapted to automatically carry out a control for a brake unit in response to th... | 09/16/1997 |
| 5655407 | System and method for decreasing ratio changing time in electronically enhanced powertrain systems A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase... | 08/12/1997 |
| 5647818 | Shifter interlock for an automatic transmission An automotive shifter interlock in which a slidable shift lever release member is mechanically locked in a shift-release-inhibit position by the combination of an electromagnet bolt and an ignition switch bolt. The ignition switch bolt mechanically locks ... | 07/15/1997 |
| 5640322 | System for controlling the operation of a vehicular transmission A system to control the operation of a vehicular transmission embodying the concepts of the present invention utilizes a controller, at least one pulse width modulation solenoid valve and a torque transfer device operatively controlled by each of the sole... | 06/17/1997 |
| 5632706 | Motor vehicle with electronic clutch management system A motor vehicle has a clutch which is controlled by an electronic clutch management system. When the vehicle is in gear with the engine running and is stationary or almost stationary with no gas being given, the system causes the clutch to become engaged ... | 05/27/1997 |
| 5588515 | Method of and apparatus for speed change control The thermal load on a transmission clutch, which is generated when a shift between forward and reverse is made, can be reduced and a shock from a speed change can be eliminated. To these ends, as soon as a speed change signal is received (step 150), an al... | 12/31/1996 |
| 5586953 | System for controlling a continuously variable transmission in response to a sensed wheel deceleration In order to improve steering performance and braking performance specifically on a low μ road surface during operation of engine braking, there are provided, in a shift control system of a continuously variable transmission, a sensor for determining a wh... | 12/24/1996 |
| 5573475 | Failure detecting system and method for automatic transmission In case where an engine rotational detection signal from an ignition pulse generator is not appropriately detected even if an amount of induction air and a fuel injection amount are larger than predetermined values, an engine rotational signal failure is ... | 11/12/1996 |
| 5568851 | Transmission activating and neutralizing system A system for activating and neutralizing a transmission of a work machine includes an electrical circuit having a latching relay. The transmission is shifted by electrical solenoids which are activated by electrical current through the latching relay. Cur... | 10/29/1996 |
| 5542513 | Parking brake system An automatic parking brake system for a vehicle with an electric starter motor with a conventional solenoid and also a modified contactor assembly that is used to selectively activate the motor and set the wheel brake of a vehicle. An additional solenoid ... | 08/06/1996 |
| 5528950 | Transmission inertia brake with ball ramp actuator An inertia brake is coupled to a rotating shaft of a vehicle transmission where a ball ramp actuator energized by an electrical coil is used to load a clutch pack which frictionally creates a braking torque on the rotating shaft to facilitate synchronous ... | 06/25/1996 |
| 5506771 | Start gear ratio control system and method A control system and method for a semi-automatic mechanical transmission system (10) is provided for allowing operator request for a direct downshift or upshift into a preselected start ratio, under certain predefined conditions. The preselected start rat... | 04/09/1996 |
| 5455767 | Control and method for controlling a motor vehicle drive having an automatic transmission A control for a motor vehicle drive having an automatic transmission includes a circuit configuration for generating an output signal adapting shifting points to a load state of the motor vehicle from an evaluation of a power takeoff rpm of the transmissi... | 10/03/1995 |
| 5396968 | Drive mechanism for electric car A drive mechanism for an electric car which has a plurality of motors arranged in a drive mechanism case which, in turn rotatably supports a shaft at two points. This shaft transmits the rotation generated by the motors to drive shafts for rotation of the... | 03/14/1995 |
| 5377791 | Regenerative brake device and a power transmission device for electric motor vehicles A regenerative brake device increases its regenerative brake power during high-speed driving, without impairing driveability. A regenerative brake device includes a driving wheel linked with a rotary shaft of an electric motor through a power transmission... | 01/03/1995 |
| 5362285 | Control system for vehicular power plant including automatic transmission and exhaust brake A control system for a vehicular power plant including an automatic transmission and an exhaust brake. The exhaust brake includes a butterfly valve movably disposed in an exhaust pipe. The control system is comprised of a control unit which is supplied wi... | 11/08/1994 |
| 5358081 | Hydraulic retarder control system The hydraulic retarder control system comprises pressure reducing valves which can switch the pressure of the air to be supplied from a pressure air source 4 to an air/liquid conversion device 25 at least to a low pressure, an intermediate pressure and a ... | 10/25/1994 |
