Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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 |
| 8066605 | Planet transmission, drive device comprising the planet transmission and vehicle comprising the drive device A planetary transmission includes a sun gear, which constitutes an input drive to the planetary transmission, a ring gear arranged around the sun gear, and a planet carrier which is designed to rotate and which carries at least one planet wheel, which planet wheel m... | 11/29/2011 |
| 8043186 | Two stage check valve for automatic transmission system The two stage check valve for the automatic transmission system provides a first member that opens in response to a first pressure and a second member which opens in response to a second pressure where the second pressure is higher than the first pressure. ... | 10/25/2011 |
| 7976420 | Eccentric oscillating type speed reducer The present invention provides an eccentric oscillating type speed reducer that can more effectively be cooled with an extremely simple structure. An eccentric oscillating type speed reducer 1 includes a camshaft 11 having crank portions 11 | 07/12/2011 |
| 7819769 | Vehicle driveline component having heat sink for increased heat rejection capabilities An axle assembly that includes an axle housing assembly, a differential disposed in the axle housing assembly, an input pinion, a pair of axle shafts and a heat sink. The input pinion is coupled to the axle housing assembly and is configured to transmit a rotary inp... | 10/26/2010 |
| 7517296 | Variable motor/generator cooling control system for electrically variable hybrid vehicular transmissions The present invention provides a control system employing a single solenoid valve operable to provide a variable fluid flow to effect cooling if the motor/generator assemblies contained within an electrically variable hybrid transmission. The control system of the p... | 04/14/2009 |
| 7402923 | Electrically variable transmission A transmission includes a housing, an electric motor having a stator within the housing, and a member including a generally cylindrical portion that circumscribes at least part of the stator. The member cooperates with the housing to form an annular coolant flowpath... | 07/22/2008 |
| 7350605 | In-wheel motor capable of efficiently cooling electric motor and reduction gear An in-wheel motor includes a wheel disc, a wheel hub, a case, a motor, a planetary gear and a shaft. The wheel disc is connected to the wheel hub. The planetary gear is connected to the motor's rotor. The case includes subcases and a diaphragm. One subcase is arrang... | 04/01/2008 |
| 7243749 | Motor-driven wheel small in size and improved in ride comfort and ease of assembly A motor-driven wheel includes a wheel disc, a wheel hub, a knuckle, a hub bearing, a constant-velocity joint, an in-wheel motor, and a spring. The center of swing of the constant-velocity joint is placed closer to the outside of the vehicle relative to the hub beari... | 07/17/2007 |
| 7239055 | Motor cooling system The invention provides a structural member for a vehicle transmission formed with an annular recess in fluid communication with a fluid source and at least partially enclosing and defining an interior space of the transmission. An interior component, such as a motor... | 07/03/2007 |
| 7228928 | In-wheel motor capable of efficiently cooling motor An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pum... | 06/12/2007 |
| 7214155 | Electric drive unit for motor vehicles An electric drive unit for a motor vehicle comprises an electric motor having a motor housing, a stator mounted in the motor housing and having coil-wound poles, a rotor arranged internally of the stator with an air gap present between the stator and the rotor, and ... | 05/08/2007 |
| 7188699 | Axle assembly with cooling pump An axle assembly with a cooling pump. The cooling pump includes a disk-shaped wheel with a plurality of radially-spaced ducts formed therein. The wheel is positioned in proximity to the axle assembly and rotated, allowing the ducts to draw air therethrough and direc... | 03/13/2007 |
| 7083014 | Drive device for a machine with a traction drive system and a hydraulic work system A drive device is provided for a machine with a traction drive system and a hydraulic work system. The traction drive system has a drive axle and the hydraulic system has at least one electric motor and at least one pump driven by the electric motor. The electric mo... | 08/01/2006 |
| 7077776 | Transmission fluid heating using engine exhaust A heat exchanger integrated into the transmission oil pan transfers heat from post-catalyst exhaust gases to the transmission oil. Inlet and outlet ducts route exhaust gas between the heat exchanger and an exhaust pipe located downstream of the catalyst. The exhaust... | 07/18/2006 |
| 7052429 | Internal expansion tank for hydrostatic transaxle An expansion chamber for a hydrostatic transaxle to provide for expansion of the hydraulic oil during operation of the transaxle, where the expansion chamber is formed as part of the housing inside the main sump by ribs or other members extending from the housing an... | 05/30/2006 |
| 7009317 | Cooling system for an electric motor A cooling system for an electric motor includes a cooling duct formed between a cooling jacket and a separate component surface. The separate component surface may define at least a portion of a wall of the cooling duct. The cooling duct may be configured to direct ... | 03/07/2006 |
| 7004871 | Automatic transmission apparatus An automatic transmission apparatus comprising, a first member rotating integrally with an input shaft and including a first cylindrical portion having an inner spline at an inner peripheral surface, a second member including a second cylindrical portion having an o... | 02/28/2006 |
| 6942049 | In-wheel motor for electric automobiles The present invention provides an in-wheel motor for an electric vehicle allowing a drive motor to be freely mounted onto a chassis irrespective of the shape, structure, and characteristics of the drive motor as well as allowing free selection of a reduction gear ra... | 09/13/2005 |
| 6843747 | Internal expansion tank for hydrostatic transaxle An expansion chamber for a hydrostatic transaxle to provide for expansion of the hydraulic oil during operation of the transaxle, where the expansion chamber is formed as part of the housing inside the main sump by ribs or other members extending from the housing an... | 01/18/2005 |
| 6830527 | Cooling system for working fluid used in automatic transmission of automotive vehicle In a transmission-fluid cooling system of an automatic transmission of an automotive vehicle equipped with a water-cooled oil cooler and an air-cooled oil cooler connected in series to each other, a first bypass valve is provided to permit working fluid to circulate... | 12/14/2004 |
| 6805025 | Harmonic drive and internal geared wheel for a drive of this type The refinement of such harmonic drives according to German Patent 1 98 33 290 C1=European Patent Application 0 974 773 A concerns damping of the noise generation as a consequence of the revolving displacement of discrete tappets (instead of the rotating deformation ... | 10/19/2004 |
| 6740000 | Cooling system for working fluid used in automatic transmission of automotive vehicle In a transmission-fluid cooling system of an automatic transmission of an automotive vehicle equipped with a water-cooled oil cooler and an air-cooled oil cooler connected in series to each other, a first bypass valve is provided to permit working fluid to circulate... | 05/25/2004 |
| 6579202 | Lubrication and cooling system for power receiving and delivery units in an electro-mechanical vehicular transmission Lubrication and cooling assemblies particularly adapted for use with power receiving and delivery units that concentrically circumscribe planetary gear subsets encased in the housing of a vehicular transmission. Such assemblies utilize a source of pressur... | 06/17/2003 |
| 6511396 | Oil temperature adjusting apparatus in hydraulically operated transmission A heat exchanger 15 is disposed in an oil passage 14 provided in a hydraulic pressure circuit 9 of a hydraulically operated transmission, to conduct heat exchange between cooling water for an engine 2 and hydraulic fluid.... | 01/28/2003 |
| 6432018 | Integrated heat exchange circuit for an axle A drive line power transfer mechanism having a housing, a power transfer mechanism, a first fluid, at least one cooling conduit and a fluid source. The housing has a wall member that defines a cavity. The power transfer mechanism is positioned within the ... | 08/13/2002 |
| 6408995 | Method for flushing the casing of a hydraulic motor A hydraulic motor (2) with a braking device (8), is acted upon by means of a control fluid via a brake release line (6). The brake release line (6) is used to allow a continuous flushing flow of control fluid through the hydraulic motor at the same time a... | 06/25/2002 |
| 6350215 | Hydraulic control system for pressure control of a CVT variator with limp home mode A hydraulic system for pressure control of a variator (7) of an automatic transmission having an electronic transmission control is connected with a lubricant circuit (10) in which at least one lubrication valve (14) and one radiator (13) are situated. Oi... | 02/26/2002 |
| 6158303 | Transfer case for four wheel drive vehicle In a transfer case for a four-wheel drive vehicle having a front wheel drive axle assembly which includes a first wheel drive axle shaft arranged in parallel to the engine output shaft and connected to a transmission output shaft through a first helical r... | 12/12/2000 |
| 6068569 | Automatic transmission hydraulic control system with parallel lubrication and cooler circuits An automatic transmission hydraulic control system is provided with lubrication and cooler circuits fed in parallel. The lubrication circuit is fed by regulated pressure which prevents lubrication starvation concerns under extremes of temperature and spee... | 05/30/2000 |
| 6035988 | Four-wheel drive control system A control system for a 4WD vehicle has a rotation transmission device which can prevent a two-way clutch of the rotation transmission device from vibrating by repeatedly locking and unlocking when the vehicle is started in a cold environment. The rotation... | 03/14/2000 |
| 6036615 | Forced convection axle cooling A differential having a housing for receiving differential components. An input shaft, for example a drive pinion gear, is rotatably mounted within the differential housing. A drive line connection point is affixed to the drive pinion gear and is the moun... | 03/14/2000 |
| 5698912 | Brushless motor with torque and speed proportional coolant flow A brushless electric motor has a fluid-tight housing, an internal rotor which is connected to an output shaft, stator plates which are disposed at a radial spacing from the rotor, a coolant delivery line leading into the interior of the housing, and a coo... | 12/16/1997 |
| 5540300 | Drive axle assembly with lubricant cooling system A drive axle assembly has a gear housing, two axle tubes extending outwardly of the gear housing, a lubricant reservoir in the gear housing and a gear assembly rotatably mounted in the gear housing that has a rotatable member that is partially disposed in... | 07/30/1996 |
| 5156579 | Lubricating device for a vehicle motor A wheel motor is provided with a stator which includes a coil wound therearound and which is fixed to a casing, a hollow cylindrical rotor which is supported by the casing through a bearing and is disposed inside the stator, an output flange which is supp... | 10/20/1992 |
| 4909354 | Segregated fluid management system and method for integrated drive generators A segregated fluid management system and method is provided for a SDG or IDG system. There is a full case hydraulics (24), a gear case section (19) and a generator section (25). The full case hydraulics section (24) operates completely full of oil. A char... | 03/20/1990 |
| 4799564 | Electric wheel drive An electric wheel drive for a wheel body having a drive housing with an interior side facing toward the body and having an opposite exterior side facing away from the body includes a drive motor which has a drive shaft facing the exterior side. Second sta... | 01/24/1989 |
| 4760759 | Geared ratio coupling This invention pertains to gear reducers using the nutating principle. The tooth form is epicycloidal, but with the root or stem of the tooth also epicycloidal so that tooth contact between meshing teeth is essentially for one hundred eighty degress of ar... | 08/02/1988 |
| 4713982 | Integral gear box and electrical generating system Reductions in weight, frontal area and overhang moment in an aircraft engine gear box and electrical generating system are achieved in a construction including a gear box housing 20 provided with an input shaft 16 connectable to a power take-off 12. A dif... | 12/22/1987 |
| 4662244 | Accessory drive device in engine A device which drives accessories such as an alternator or a cooling water pump utilizing output of an automobile engine, comprises an input shaft installed to an output shaft of the engine, a nonstage transmission with differential planetary mechanism of... | 05/05/1987 |
| 4377094 | Liquid cooled disc brake for differential of a tracked vehicle An improvement for a steering differential for a tracked vehicle comprising a liquid cooled, hydraulically operated disc brake, two of which are normally used upon the differential to brake and steer the vehicle. A number of stationary discs are keyed int... | 03/22/1983 |
