Gear transmission
Patent 4273001 Issued on June 16, 1981. Estimated Expiration Date: 
March 26, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 26, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2046428 2273068 2329354 2542911 2549096 2727602 3110191 3830111 Change gear transmission for motor vehicles, especially for use in agriculture and construction Gear transmission InventorsAssigneeApplicationNo. 06/024030 filed on 03/26/1979US Classes:74/359, Selective74/15.4, With independent change speed gearing74/473.1Transmission controlExaminersPrimary: Herrmann, Allan D.Attorney, Agent or FirmInternational ClassesF16H 61/02 (20060101)F16H 37/02 (20060101) F16H 3/08 (20060101) F16H 37/04 (20060101) Foreign Application Priority Data1978-05-27 JPAbstractA gear transmission comprising a driving transmission shaft, a driven transmission shaft, a gear shaft between the two transmission shafts, three speed change gears of different diameters mounted on the gear shaft, an auxiliary speed change shaft carrying three gears of different diameters respectively in mesh with the speed change gears, and two clutch members provided between one or the other of the transmission shafts and the gear shaft. Each clutch member provides two speeds by switching between a position to connect one of the transmission shafts to the gear shaft and a position to connect the transmission shaft to one of the speed change gears. Thus the gear transmission provides a total of four speeds. | |
