Quotables
"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7416068 | Power take-off clutch control system Clutch control systems for a power take-off system of a vehicle, such as those employing all-wheel and four-wheel drive systems. The control system calculates the temperature of the clutch system, based on one or more vehicle operational parameters. If the clutch sy... | 08/26/2008 |
| 7366601 | Automatic transmission having torque converter with lockup clutch and method of controlling same lockup clutch When a downshift instruction has been detected, the oil pressure of a lookup clutch is controlled, and the state of operation of the automatic transmission is detected. If a starting condition has been met, a slip rotation speed of the lockup clutch is calculated, a... | 04/29/2008 |
| 7342754 | Bypass circuit to prevent arcing in a switching device A device is provided for preventing arcing between contacts of a switching device as the contacts of the switching device are opened. The device includes a coil suppression circuit connected in parallel with the coil. The coil suppression circuit dissipates the ener... | 03/11/2008 |
| 7232021 | Method and assembly for controlling a centrifugal clutch A centrifugal clutch assembly includes a sleeve movable to selectively engage the clutch assembly independent of rotational speed. The clutch assembly includes centrifugal weights that move radially responsive to rotation of the clutch assembly. The centrifugal weig... | 06/19/2007 |
| 7217223 | Vehicle with clutch for transmission of torque output of motor A vehicle comprises a motor (4) and a wet clutch (12) for transmission of torque output of the motor to road wheels of the vehicle and transmission of road load from the road wheels to the motor (4). The wet clutch is disengaged in response to a... | 05/15/2007 |
| 7213482 | Actuator with internal drive train disconnect An electro-mechanical actuator is provided that minimizes back drive effort by de-coupling the internal drive train of the actuator from the actuator output using a clutch. The clutch facilitates transfer of power to an output gear stage when the actuator motor is e... | 05/08/2007 |
| 7156771 | Clutch unit In a clutch unit, an engagement of a dog clutch can be restricted until a revolution of an input shaft and the revolution of an output shaft correspond to each other so as to be suitable for the engagement. The engagement can be effected when the revolution of the i... | 01/02/2007 |
| 7146263 | Predictive load management system A predictive load management system is provided. A power source is operable to generate a power output and has a desired operating range. A transmission has a drive member operably engaged with the power source and a driven member. A control system is operable to re... | 12/05/2006 |
| 7077783 | Method and device for operating a clutch A method and device for operating a clutch between an internal combustion engine and at least one driven wheel of a vehicle, a torque being transmitted between the internal combustion engine and the driven wheel by pressing the clutch together via an application for... | 07/18/2006 |
| 7059998 | DOD control methods for manual transmissions An engine control system transitions between activated and deactivated modes in a vehicle equipped with a manual transmission. The engine control system includes a clutch plate position sensor and a shifter shaft position sensor in communication with a controller. T... | 06/13/2006 |
| 7044280 | Method for adapting the clutch characteristics in a twin-clutch system The invention relates to a method for adapting the clutch characteristics in a twin-clutch system (PSG) which comprises in a first train a first clutch (A) and a first partial transmission (iA) mounted downstream thereof, and in a second train a second clutch (B) an... | 05/16/2006 |
| 7040433 | Drive control apparatus for hybrid vehicle A rotational shaft receives drive power from an engine and a first motor, and drives front wheels through front clutches. A second motor drives rear wheels. The first motor and the second motor are supplied with electric power from a battery. A main ECU controls an ... | 05/09/2006 |
| 6994197 | Clutch element for a unit driven via a drive shaft A clutch element for a unit is driven via a drive shaft, especially for a water pump. The clutch element comprises a temperature- and/or speed-sensitive clutch member which is rigidly connected with the drive shaft and which acts on a part of the unit to be driven d... | 02/07/2006 |
| 6962226 | Vehicular two-wheel drive and four-wheel drive switching system To provide a vehicular two-wheel drive and four-wheel drive switching system the power consumption of which can be reduced. A vehicular two-wheel drive and four-wheel drive switching system is provided with a switching unit for transmitting power or disconnecting th... | 11/08/2005 |
| 6957127 | Dynamic current-to-pneumatic converter and pneumatic amplifier A dynamically balanced pneumatic relay amplifier and a current-to-pneumatic converter are disclosed. The relay has a balance plug, a supply plug positioned on top of the balance plug, a bead chain connecting the balance plug and the supply plug, and a vent plug posi... | 10/18/2005 |
| 6793059 | Auxiliary machine drive system of automatic engine stop-restart system equipped automotive vehicle In an auxiliary machine drive system of an automatic engine stop-restart system equipped automotive vehicle capable of automatically stopping or restarting an engine depending on vehicle operating conditions, an electromagnetic clutch is disposed between the engine ... | 09/21/2004 |
| 6761600 | Marine gear and a method for preventing a drop in motor speed when engaging a multi-plate clutch The invention relates to a marine gear, in particular to a reversing gear, consisting of a hydraulic control assembly comprising variable multi-plate clutches for forwards and reverse travel, in which the operating pressure required to engage the multi-plate clutche... | 07/13/2004 |
| 6761659 | Method for controlling engagement of frictionally engaging element in power transmission In a power transmission, which adjusts and transmits the rotational output of an engine by the engagement control of a starting clutch 5, the rotational speed Ne and the suction negative pressure Pb of the engine are measured while the starting clutch is bein... | 07/13/2004 |
| 6745885 | Power distribution control apparatus for four-wheel drive vehicle and a method for controlling the apparatus A power distribution control apparatus determines a command value that corresponds to the driving state of a four-wheel drive vehicle. The vehicle includes a pair of front wheels and a pair of rear wheels, and a coupling device that changes the power distribution to... | 06/08/2004 |
| 6736758 | Variable torsion converter A variable torsion converter for use with automobiles and other like vehicles using transmission whereas the present invention uses a magnetic clutch in which a ferromagnetic slurry forms a magnetic bond with a power output plate as the slurry is rotated by a power ... | 05/18/2004 |
| 6662918 | Torque converter provided with lock-up clutch and arranged for efficient heat dissipation A torque converter provided with a lock-up clutch and including a pump impeller, a turbine runner, a turbine hub, a stator, a clutch piston rotatable with the turbine runner and cooperating with the pump impeller to define an engaging chamber, a front cov... | 12/16/2003 |
| 6502681 | Clutch connection control system To provide a clutch connection control system capable of shortening a time required for clutch connection, preventing the degradation of riding comfort upon clutch connection, and ensuring good operability. A separation distance, that is, a shift amount o... | 01/07/2003 |
| 6481554 | Clutch connection control system To provide a clutch connection control system capable of shortening the time required for clutch connection, preventing the degradation of riding comfort upon clutch connection, and ensuring good operability. A separation distance, that is, a shift amount... | 11/19/2002 |
| 6463821 | Method of controlling a transmission having a dual clutch system A method of controlling a dual clutch transmission of a motor vehicle, wherein the first clutch acts to transmit torque to the first driven gear, and the second clutch acts to transmit torque to the second driven gear. The steps involved in controlling th... | 10/15/2002 |
| 6446773 | Viscous coupling with symmetric freewheeling assembly A viscous coupling having two rotatable parts in the form of a hub and a housing for the transmission of torque between the rotatable parts caused by a positive speed differential between the rotatable parts, which are supported inside one another, which ... | 09/10/2002 |
| 6422365 | Power transmission system for four-wheel drive vehicles In a power transmission system for a four-wheel drive vehicle, a multiple disk clutch for distributing a proportion of the torque of the front wheels to the rear wheels is provided between a driving shaft which is connected to the front wheels which are m... | 07/23/2002 |
| 6247566 | Torque Transmitting device A device for transmitting torque between two rotatable, coaxial shaft members (1, 2) contains a number of alternate clutch discs (5, 6) for counteracting differential rotational speed between the two shaft members. Planetary gear means (11, 15, 16-20) are... | 06/19/2001 |
| 6223874 | Apparatus for operating a clutch in an automated mechanical transmission An apparatus and method for controlling the engagement rate of a clutch in a partially or fully automated mechanical transmission is responsive to certain calculations derived from the rotational speeds of the input member and the output member of the clu... | 05/01/2001 |
| 6175785 | Hybrid vehicle A hybrid vehicle is driven by either an engine or a motor by tightening or releasing a clutch interposed between an engine and a transmission. A generator is connected to the engine, and the engine torque is absorbed by the generator when the power source... | 01/16/2001 |
| 6079536 | Rotational speed control arrangement for a fluid friction coupling An arrangement for controlling the rotational speed of an output rotational part of a fluid friction coupling is provided. A fan for cooling components of a motor vehicle is coupled with a driving rotational part by way of a shearing fluid whose effective... | 06/27/2000 |
| 6035984 | Automatic clutch This invention relates to an automatically controlled clutch in a motor vehicle drive train. Rotational speed differences between the clutch input and the clutch output are determined by a computer from rotational speeds of the vehicle engine, on the one ... | 03/14/2000 |
| 5931008 | Protecting device for car air conditioner A protecting device for a car air conditioner includes a timer for timing a period of the rise in the level of a rotation signal delivered from a rotation sensor for detecting a rotational speed of a compressor with the signal being distinguished from noi... | 08/03/1999 |
| 5894903 | Motorcycle with adjustable-power front wheel drive (all wheel drive) A two wheel drive motorcycle is provided with an unsteerable rear wheel, a steerable front wheel, a drive unit having a driving motor for driving the rear wheel and a transmission device coupled to the drive unit for driving the front wheel. The transmiss... | 04/20/1999 |
| 5799765 | Fluid clutch A fluid clutch comprises a driving disc rotationally driven by a driving section, a rotatable casing enhousing the driving disc, a blower attached to the casing, and an oil supply means for supplying an oil from an outside to a torque transmission gap bet... | 09/01/1998 |
| 5721682 | System for discriminating operating state of vehicle clutch mechanism A system for discriminating operation state of a lockup clutch of a torque converter of a transmission of a vehicle, more particularly to a system for detection a lockup clutch failure. In the system, three discrimination areas are preestablished with res... | 02/24/1998 |
| 5681242 | Selectable enhanced creep control mode for automated clutch and vehicular automated mechanical transmission system utilizing same A control for a vehicular automated clutch (14) drivingly interposed between a fuel-controlled engine (12) and a multiple-speed, change-gear transmission (16) providing enhanced low-speed maneuvering control is provided. Upon manual selection (40) of cree... | 10/28/1997 |
| 5678674 | Control device for regulating the engaging process of a separating clutch for motor vehicles A control device for regulating the engaging process of a separating clutch for motor vehicles for automatically reducing the rpm difference between the driven clutch element and the driving clutch element and/or to regulate the disengaging process of a s... | 10/21/1997 |
| 5584371 | Viscous fan drive system logic A method of controlling a viscous fluid coupling (15) in which, when the vehicle engine (E) is operating at low speeds, if the speed of rotation (SF) of the fan exceeds a predetermined speed limit (L3), the input signal (29) to the coupling is modified to... | 12/17/1996 |
| 5549187 | Free-wheeling coupling sensitive to the direction of rotation A free-wheeling coupling sensitive to the direction of rotation for a motor vehicle comprises a first ring which constitutes a driving element in a towing mode of the motor vehicle, a second ring which constitutes a driven element in the towing mode, clam... | 08/27/1996 |
| 5463298 | Apparatus for detecting reference position of servo-controlled member An apparatus that detects a reference position of a throttle valve. The throttle valve is forced in either a valve opening direction or a valve closing directions by an urging member. A DC motor, which is connected to the throttle valve, drives the thrott... | 10/31/1995 |
