Famous Patents
The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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 |
| 6240997 | Rolling steel door A rolling steel door, which includes a plurality of transverse rod members, a plurality of sleeves respectively sleeved onto the transverse rod members, a plurality of links respectively coupled to the transverse rod members to hold the transverse rod mem... | 06/05/2001 |
| 5507198 | Simple low-cost mechanical transmission for accommodating variable loads A mechanical transmission (10) includes a first gear (13), a second gear (15), a slip clutch (14), an input shaft (11), a fourth gear (20), a one-way bearing (21), a third gear (18) and an output shaft (12). The first gear (13) and the slip clutch (14) ar... | 04/16/1996 |
| 5476164 | Solenoid actuated mechanical clutch A solenoid operated actuator mechanism for positioning a shift fork in a double clutch arrangement for use in a transmission includes a pair of solenoid actuators operatively connected to a shaft that is fixed to the shift fork for positioning the shift f... | 12/19/1995 |
| 5226338 | Vehicle compound change gear transmission A vehicle compound change gear transmission is provided that features an auxiliary drive gear (24) carried by a mainshaft (20) having enhanced freedom of radial movement by eliminating all radial contact between a bearing member that resiliently supports ... | 07/13/1993 |
| 4998443 | Control system for automatic gearboxes in which gear changes are effected stepwise An electrohydraulic system for controlling the gear changing process in a mechanical, automatic gear-box having five gears. The system includes two pairs of electromagnetic valves (57, 58, and 59, 60) which control via pressure-control valves (61, 62) the... | 03/12/1991 |
| 4854923 | Torque transmission unit for partially frozen beverage system A pair of torque transmission units deliver torque to first and second cooling chambers that produce the partially frozen beverages. A first torque transmission unit is directly coupled to a geared motor. The first unit includes a stand with three upright... | 08/08/1989 |
| 4686869 | Ratio change gear speed synchronizing in a tractor transmission A tractor transmission includes a pair of dual power clutches that connects an engine to an input shaft through a gearset that selectively makes a direct connection or overdrives the shaft in accordance with the engaged or disengaged state of the clutches... | 08/18/1987 |
| 4679454 | Multi-ratio transmission A preselected transmission has three friction clutches and one synchronized mechanical clutch assembly to provide five forward speed ratios. An additional mechanical clutch permits the addition of a reverse ratio. The clutches are combined with a gearing ... | 07/14/1987 |
| 4667526 | Change speed transmission A transmission comprises first and second input shafts which are drivable respectively from independently operable first and second clutches. Gearing is provided which enables drive to be transmitted from the input shafts to an output via a layshaft. Furt... | 05/26/1987 |
| 4658663 | Synchromesh transmission suited for use as automotive automatic transmission A countershaft synchromesh type transmission is arranged to have primary and secondary groups of intermeshing input and output gears which are designed to selectively provide between the input shaft and the countershaft a common (third) speed change ratio... | 04/21/1987 |
| 4589294 | Vehicle transmission with a plurality of forward and reverse speeds A vehicle transmission characterized by having a low profile, and a plurality of forward and reverse speeds. The transmission includes a plurality of shafts inclusive of an input shaft, an output shaft, a counter shaft and a plurality of gear shafts. The ... | 05/20/1986 |
| 4565106 | Gear transmission mechanism with multiple layshafts A gear transmission mechanism for an automotive vehicle, with a power input shaft, including several combination assemblies, each including a layshaft and a selectively engagable friction engaging mechanism which can either be engaged to rotationally driv... | 01/21/1986 |
| 4464947 | Drive transmissions An automatic transmission for a city bus and other highway vehicles comprises an engine-mounted gearbox with a laterally offset drive output to the rear wheels through a propeller shaft and differential drive unit. The gear box has four layshafts grouped ... | 08/14/1984 |
| 4463621 | Multiple countershaft automatic transmission An automatic transmission has two countershafts, two clutches, an output shaft, two synchronizers, two input shafts adapted to be driven from the crankshaft of an engine through either of the two clutches and a one-way clutch that connects the first gear ... | 08/07/1984 |
| 4461188 | Dual clutch multiple countershaft transmission First and second concentric input shafts are connected to an engine crankshaft through friction clutches, one for each input shaft. Two countershafts carrying forward speed ratio and reverse drive output gears are driven from pinions carried by each of th... | 07/24/1984 |
| 4392391 | Multispeed reversible power shift transmission A multispeed constant mesh gear transmission includes an input shaft together with first, second and third intermediate shafts arranged in a diamond or cruciform configuration together with an output shaft having an axis of rotation lying in a plane inclu... | 07/12/1983 |
| 4375171 | Automatic transmission Disclosed is a power shift transmission having two input shafts, an output shaft, two countershafts which are first synchronized and clutched with either of the input shafts, and then alternately clutched to the output shaft. Each countershaft rotatably s... | 03/01/1983 |
| 4173905 | Change-speed gearboxes A change-speed gearbox has coaxial input and output shafts. Five intermediate shafts are equi-spaced around the input shaft and each has two gears fixed thereto, one of which meshes with a common gear on the input shaft, the intermediate shafts being mova... | 11/13/1979 |
| 4157044 | Five speed motorcycle transmission A five speed motorcycle transmission with coaxial input and output drives. The transmission includes a driveshaft and a countershaft rotatably mounted in a gear housing for supporting transmission system components and gear arrangements. Input torque is a... | 06/05/1979 |
| 4123739 | Thermostat control A thermostat control to change the setting of a thermostat to a preselected point and automatically to return the thermostat to the original setting after elapse of a preselected time interval.... | 10/31/1978 |
| 4117744 | Transmission for crawler tractors A transmission for a crawler tractor includes a first cross-drive shaft arrangement including two separate sections with a forward/reverse bevel gear arrangement connecting the two sections to a drive input shaft so that each shaft section is capable of b... | 10/03/1978 |
