Class 74/357 - Progressive

Subclass of Class 74 - Machine element or mechanism
Definition: Transmissions wherein there are a plurality of slidable
No. of patents: 31
Last issue date: 06/19/2007

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Number	Title	Issue Date
7231845	Cone selector and associated transmission assembly A multi cone selector in a transmission employs sandwiched cone friction surfaces 19A, 20A and 21A and these are shown in free or unengaged state while the corresponding friction surfaces as numerals 19, 20 and 21 are shown as enga...	06/19/2007
7121162	Parallel shaft transmission An input shaft 10 is connected rotationally with an intermediary shaft 20 through a connecting drive gear GCV, a connecting first idle gear GC1, a connecting second idle gear GC2 and a connecting driven gear GCN. A fourth speed drive gear...	10/17/2006
6595078	Transmission apparatus for vehicle There is provided a transmission apparatus for a vehicle, which is arranged between a counter shaft and a drive shaft disposed in an engine unit of the vehicle, the transmission apparatus having a simple and compact structure and ease operability and perm...	07/22/2003
5542309	Gearbox This gearbox whose arrangement is derived from that of motorcycle gearboxes, comprises organs according to the invention enabling it to be adapted, in particular for a motor vehicle. The selector shaft (10) which ensures the ratio shift by means of forks ...	08/06/1996
5508916	Control for engagement of positive clutches in automated mechanical transmission systems A control method/system for controlling engagement of a target gear ratio (GRT)in a vehicular automated mechanical transmission system (10) is provided. The control causes engine speed (ES) to be alternately greater than and then less than sync...	04/16/1996
5275087	Wobble plate type refrigerant compressor A wobble plate type refrigerant compressor is disclosed which includes a compressor housing having a crank chamber and a cylinder block which is provided with an axial central bore and a plurality of cylinders. A plurality of pistons are slidably fitted w...	01/04/1994
5085092	Gear transmission for vehicle A gear transmission for a vehicle in accordance with the present invention forms a first speed change range by disposing a back range gear and a second range gear on an output shaft adjacent to each other, disposing a back idle gear meshing always with th...	02/04/1992
5081878	Tractor transmission A drop box transmission is especially suited for use in heavy equipment of the four-wheel drive, bi-directional Type 1, that is capable of being driven in opposite directions with equal speed and power ranges. The transmission has a four shaft drop from a...	01/21/1992
4916960	Manual transmission for motor vehicle A variable speed manual transmission includes an input shaft having a first drive gear for low speed drive and a second drive gear for high speed drive fixed thereon, an output shaft located under the input shaft and in parallel therewith and having at le...	04/17/1990
4869122	Manual transmission for motor vehicle A manual transmission includes an input shaft having first and second drive gears fixed thereon respectively for low speed drive and high speed drive, an output shaft arranged in parallel with the input shaft and having at least a pair of axially spaced c...	09/26/1989
4827784	Vehicle driving mechanism having a synchromesh gearbox with an additional clutch in each of two power branches In a mechanism for driving motor vehicles having a synchromesh gearbox with a friction clutch for each of two power branches with at least four power shiftable speeds and consecutive speeds are alternatively present on each one of the two power branches. ...	05/09/1989
4776227	Motor vehicle gearbox A vehicle gear-box with an input shaft which drives two intermediate shafts, which lie in a plane offset from the input shaft and have a pair of mutually engaging gears, one of which is non-rotatably joined to the intermediate gear for the first gear spee...	10/11/1988
4738150	Compact manual transaxle transmission A compact manual transaxle transmission includes an input shaft with four foward drive gears and a reverse drive gear. Two countershafts drive a differential. The first countershaft supports four forward driven gears and a reverse driven gear. The second ...	04/19/1988
4726246	Countershaft transmission having two forward and two reverse speeds Countershaft transmissions are useful for vehicles such as lift trucks or the like. But obtaining the desired speed reduction ratios and alignment of the various axes where space is at a premium is difficult. The subject countershaft transmission provides...	02/23/1988
4658662	Transmission and PTO system for tractors and utility cycles A speed change transmission is shown in variation having an extremely wide range of selectively engageable speed drive ratios for use with garden tractors and utility cycles with tractor mode. The transmission also serves as a speed range transmission for...	04/21/1987
4640141	Gearbox-transmission with synchronized reverse-gear A gearbox-transmission, especially for power vehicles, with synchronized reverse gear, an intermediate-gearwheel providing for the reversal of direction consists of two loose-gearwheels located on the same axis which is beside the input and output shafts,...	02/03/1987
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
4580459	Change-speed gear in group-type construction A change-speed gear in group-type construction with a main gear-shifting mechanism and a group gearing connected thereto. A primary shaft drives a main shaft selectively via gears of an intermediate shaft or by direct coupling of the primary shaft and the...	04/08/1986
4579015	Speed changing apparatus for a working vehicle The invention provides a speed changing apparatus for a working vehicle comprising branched transmission lines between an input shaft and an output shaft. Each of the transmission lines includes one or more synchromesh type change speed gear mechanisms an...	04/01/1986
4513631	Dual input clutch transmission A dual input clutch transmission has four forward speed ratios. The first and second ratios are duplicated so that a third ratio to first ratio and a fourth ratio to second ratio downshift pattern can be utilized....	04/30/1985
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
4409858	Transmissions A vehicle transmission with parallel input (30) output (19), and idler (35) shafts each provided with first (28,31,34) and second (29,32,33) gear wheels. The first gear wheels (28,31) on the input and output shafts are in constant mesh and the first gear ...	10/18/1983
4409857	Transmissions A transmission ratio selecting mechanism including a ratio selector means (typically a hand lever), first and second ratio coupling members (36b,37 ) movable to select a number of ratios in the forward and reverse drive directions of an associated transmi...	10/18/1983
4398432	Transmission with overrunning clutches A vehicle transmission having power shift means and an overrunning clutch to selectively provide a multiple speed transmission with shifting of the vehicle transmission while the vehicle is operating. The transmission includes a main drive shaft, a jacksh...	08/16/1983
4388838	Multiple countershaft simple transmission A multiple substantially identical countershaft (16, 16A), simple change gear transmission (10) having two-piece (20, 20A, 22, 22A) countershafts is provided. The use of two-piece countershafts allows the countershafts to be supported by three bearings (7...	06/21/1983
4329885	Powershift synchronized transmission Disclosed is a power shift transmission having torque converter, an input shaft driven by the torque converter, a countershaft in continuous driving relation with the input shaft, an output shaft having first, second, and third speed ratios journaled ther...	05/18/1982
4318305	Synchronized transmission A tractor transmission is synchronized between four different speeds in each of two different high and low ranges and a reverse range. A top shaft coupled to be driven by the tractor engine has four different gears which are concentrically and rotatably s...	03/09/1982
4311062	Countershaft gear transmission A countershaft gear transmission is disclosed wherein a plurality of main gears including a first main gear and a second main gear rotatably mounted to a main or output shaft, a countershaft drivingly connected to an input shaft has counter gears in const...	01/19/1982
4205561	Multiple drive train for small devices This invention relates to a drive train for small devices such as postage meters and the like wherein various speeds and drives to different sets of outputs are required during different phases of operation. The drive train of the invention negates the ne...	06/03/1980
4049095	Multiple speed web rewind transmission in series with a slip coupling The rate of rotation of the shaft of a winding apparatus for webs of sheet material is controlled by means of a transmission system comprising a plurality of non-slip drive clutches arranged for successive engagement to provide stepwise reduction in the o...	09/20/1977
3991634	Countershaft auxiliary transmission A countershaft transmission having an input shaft selectively driving a clutch carrier connected to the output shaft by selective drive through direct drive and through countershaft driven quill shafts to the clutch carrier....	11/16/1976

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Class 74/357 - Progressive