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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8167755 | Six-speed transmission One implementation of a six-speed transmission includes a first gearset including first and second planetary gearsets each having a number of teeth. The transmission also has a second gearset including a third planetary gearset operably associated with the first and... | 05/01/2012 |
| 8123642 | Hydraulic control device for automatic transmission A hydraulic control device for an automatic transmission, including: a hydraulic pressure source; a plurality of friction engagement elements; a line pressure regulating valve that regulates hydraulic pressure from the hydraulic pressure source to a predetermined li... | 02/28/2012 |
| 8105196 | Automatic transmission gear and clutch arrangement A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the... | 01/31/2012 |
| 8100803 | Hydraulic clutch control mechanism for a multi-mode hybrid transmission An electrically variable transmission (EVT) selectively establishes various EVT modes and a neutral mode. The EVT includes a source of pressurized fluid, fluid-actuated clutches, various solenoid-actuated valves including trim valves and blocking valves adapted to c... | 01/24/2012 |
| 7985153 | Hydraulic control system of 8-speed automatic transmission for vehicles A hydraulic control system of an eight-speed automatic transmission includes a first clutch/second clutch control portion controlled by a first proportional control solenoid valve and selectively supplying hydraulic pressure of a first pressure control valve to the ... | 07/26/2011 |
| 7980981 | Step automatic transmission An automatic transmission of a motor vehicle, comprising a plurality of planetary gear units; a plurality of frictional elements, the frictional elements assuming engaged/disengaged condition upon receiving a ratio change instruction thereby to establish a desired s... | 07/19/2011 |
| 7931556 | Automatic gearbox The present invention relates to an automatic transmission (1) comprising at least one planetary stage (2) and at least one gear shifting element (3), wherein this gear shifting element (3) is disposed axially directly adjacent to the pla... | 04/26/2011 |
| 7909721 | Fluid pressure control assembly Assembly of multiple individual fluid pressure control solenoid valves and an individual fluid temperature sensor so packaged relative to a respective one of the individual solenoid valves as to permit direct or indirect fluid temperature measurement at individual s... | 03/22/2011 |
| 7854675 | Hydraulic feed system for a transmission The present invention provides an assembly for use in a transmission that includes a first rotating member having a first portion and a second portion, the second portion having an outer diameter greater than an outer diameter of the first portion and having a bore ... | 12/21/2010 |
| 7780564 | Automatic transmission hydraulic line pressure regulator An automatic transmission line pressure regulator includes a first body for installation in a valve bore distant from a line pressure valve and having a threaded bore passing therethrough, a threaded adjuster axially engaged in the threaded bore and rotationally adj... | 08/24/2010 |
| 7749122 | Automatic transmission An automatic transmission includes a planetary gear arrangement, and a plurality of engaging elements each arranged to vary an engagement state among the rotating elements of the planetary gear arrangement in such a manner to establish a normal gear ratio set and an... | 07/06/2010 |
| 7563189 | Control apparatus of automatic transmission A control apparatus of an automatic transmission includes first, second and third frictional elements, first and second shift control sections issuing a hydraulic pressure command to the first, second and third frictional elements for appointment and release thereof... | 07/21/2009 |
| 7470205 | Vehicular drive apparatus A vehicular drive apparatus includes a case, a first brake having a first friction plate set and a second brake having a second friction plate set wherein the first friction plate set and the second friction plate set are sequentially arranged on a single axis, and ... | 12/30/2008 |
| 7413525 | Hydraulic control system for power transmission assembly A power compounder, for transmitting rotary power from a transmission to a driveline assembly includes a housing adapted to be mounted to the transmission. An input shaft is rotatably supported by the housing and adapted to be driven by the transmission. The compoun... | 08/19/2008 |
| 7410438 | Switching-valve arrangement for a shifting system of an automatic transmission The invention relates to a switching-valve arrangement for a shifting system of an automatic transmission having a first actuator for engaging and releasing gears, at least a second actuator for engaging and releasing gears, a first activatable switching valve, a se... | 08/12/2008 |
| 7395736 | All-wheel drive torque vectoring system An all-wheel drive system for a vehicle having an engine and a drive shaft is arranged between the drive shaft and front and rear propellable shafts. These shafts are interconnected by first and second clutches respectively, and the propellable shafts are coupled to... | 07/08/2008 |
| 7347117 | Hydraulic linear drive of a transmission actuator A hydraulic linear drive for a hydraulic vehicle transmission actuator has a piston/cylinder unit in which an adjusting piston is arranged so it is longitudinally displaceable in a cylinder housing and subdivides the cylinder space into at least two pressure spaces ... | 03/25/2008 |
| 7344466 | Hydraulic control system of 7-speed automatic transmission for vehicle A hydraulic control system of a seven-speed automatic transmission that provides enhanced overall performance by achieving precise and effective control by providing a fail-safe function in at least two ways. ... | 03/18/2008 |
| 7331902 | Method for performing high throttle neutral to range shifts According to a preferred embodiment of the present invention, a “special neutral” is commanded to initiate the neutral to range shift. The “special neutral” of the present invention is special in that while the transmission output speed remains unconstrained... | 02/19/2008 |
| 7326147 | Continuously variable transmission apparatus A continuously variable transmission apparatus includes a toroidal continuously variable transmission, a planetary gear transmission and a clutch apparatus that connects the toroidal continuously variable transmission and the planetary gear transmission. The clutch ... | 02/05/2008 |
| 7326141 | Compact fault tolerant variable cross-drive electromechanical transmission A transmission drive system (TDS) has two AC induction traction motors, each operatively coupled to two semi-independent coaxial traction shafts, and two AC induction steer motors coaxially mounted on a common steer axis parallel to the coaxial traction shafts. A st... | 02/05/2008 |
| 7322899 | Electro-hydraulic control system for an electrically variable hybrid transmission A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide... | 01/29/2008 |
| 7316283 | Automatic transmission controller for hybrid vehicle An automatic transmission controller for a hybrid vehicle of the present invention is used for the hybrid vehicle being a four-wheel drive vehicle and including an engine and a generator motor on a front wheel side of the hybrid vehicle and a traction motor on a rea... | 01/08/2008 |
| 7314423 | Hydraulic control system of 6-speed automatic transmission for vehicle A hydraulic control system of a six-speed automatic transmission provides an enhanced overall performance by achieving precise and effective control by providing a fail-safe function in at least two ways. ... | 01/01/2008 |
| 7311628 | Planetary gear set for an automatic transmission of a vehicle A planetary gear set for an automatic transmission of a vehicle includes a central shaft having a main lubrication path and a penetration hole connected with the main lubrication path, a sun gear, a pinion gear, a ring gear, a planet carrier, a first bearing dispose... | 12/25/2007 |
| 7306543 | Automatic transmission controller An automatic transmission controller has an electronic control circuit, an electromagnetic valve, and a pressure control valve. The electronic control circuit generates a control current. The electromagnetic valve regulates a command pressure in accordance with the ... | 12/11/2007 |
| 7288039 | Multiplexed pressure switch system for an electrically variable hybrid transmission A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide... | 10/30/2007 |
| 7278525 | Internally and externally splined clutch hub for torque-transmitting mechanisms in a power transmission A transmission assembly in accordance with the invention includes a plurality of torque-transmitting mechanisms. A hub member of the assembly includes a radially extending wall, and a circumferentially extending wall formed integrally with the radially extending wal... | 10/09/2007 |
| 7273434 | Automatic transmission brake for racing vehicles An automatic transmission brake adapter for use in high performance vehicle drag racing. In electronic controlled automatic transmission, the transmission is held in both reverse and drive allowing the engine to accelerate without movement of a vehicle. Release of t... | 09/25/2007 |
| 7264085 | Hydraulic passage structure of automatic transmission friction element A hydraulic passage structure of an automatic transmission having at least one friction element for gearshift, the friction element being comprised of a drum. The hydraulic passage structure includes a housing formed integrally with a midway wall protruding inwardly... | 09/04/2007 |
| 7258640 | Apparatus for compensating viscous characteristics of hydraulic fluid in a hydraulic pressure line An apparatus for compensating the viscous characteristics of a hydraulic medium in a pressure line (10) in which apparatus a pressure nozzle (12) with constant geometry and constant through-flow cross-section is located in the pressure line (10)... | 08/21/2007 |
| 7255212 | Hydraulic control circuit for automatic transmission of vehicle A hydraulic control circuit for an automatic transmission of a vehicle, the transmission including hydraulically operated coupling devices at least one of which is selectively operated to establish a corresponding one of speed steps, the hydraulic control circuit in... | 08/14/2007 |
| 7247114 | Automatic transmission A forward/reverse change-over mechanism (3) of an automatic transmission comprises a forward clutch (5) inside a drum (7) with the base (7c) which rotates together with an input shaft (1). The forward clutch (5) engag... | 07/24/2007 |
| 7244209 | Hydraulic control device for automatic transmission A hydraulic control apparatus for an automatic transmission including two frictional coupling devices of a first group and a plurality of frictional coupling devices of a second group, the control device including a second-group-engaging switching valve arranged to ... | 07/17/2007 |
| 7220211 | Multispeed power tool transmission A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated ... | 05/22/2007 |
| 7220206 | Hydrostatically applied clutch system with multiplex master cylinders A power transmission incorporates a plurality of torque-transmitting mechanisms having stationary piston torque-transmitting mechanisms. Each of the torque-transmitting mechanisms is controlled by one or more hydraulic master cylinders, which provide hydrostatic app... | 05/22/2007 |
| 7216753 | Vehicle drive apparatus A vehicle drive apparatus (10) for dividing torque between primary and secondary drive axles (16, 18) of a motor vehicle and including a hydraulically actuated clutch pack (26) that transfers torque to a secondary drive axle (18) of an au... | 05/15/2007 |
| 7214165 | Method of automatically flushing debris from an electrically-operated hydraulic valve The normal control of an electrically-activated hydraulic valve armature is overridden to automatically and periodically open the armature for flushing out debris that has accumulated between the armature and a seat that the armature is designed to engage. The valve... | 05/08/2007 |
| 7175556 | Hydraulic control apparatus for automatic transmission A hydraulic control apparatus for an automatic transmission includes a first SL linear solenoid, a second SL linear solenoid, a third SL linear solenoid, and a fourth SL linear solenoid, which are normal closed type, and a sequence valve. The sequence valve connects... | 02/13/2007 |
| 7163481 | Driving force transmitting system A manual valve is provided between a mechanical oil pump and a clutch of an automatic transmission device for connecting an engine with the automatic transmission device, a first check valve is provided in a passage connecting the mechanical oil pump with the manual... | 01/16/2007 |
