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Class 74/377 - Spur gears


Subclass of Class 74 - Machine element or mechanism
Definition: Transmissions having spur gears in constant mesh, certain
No. of patents: 36
Last issue date: 10/09/2007


NumberTitleIssue Date
7278523Dual clutch transmission with axially parallel clutches having an improved backing plate assembly
A dual clutch transmission with an axially parallel clutches that includes a disc support having a first circumferential groove, a backing plate having a corresponding second circumferential groove, and an annular spring element adapted to concurrently fit within th...
10/09/2007
7150347Drum assembly for a coupling arrangement
A drum assembly for use with a coupling arrangement includes an outer member and an inner member that is mountable on the outer member. The outer member includes first and second annular portions connected together. The first annular portion has a first mating surfa...
12/19/2006
7021168Gearbox embodied with a layshaft
A selector transmission with countershaft design is described which comprises one input shaft (2), one output shaft (3), one main shaft (4) situated therebetween and one countershaft (5) interacting with the main shaft (4), shiftab...
04/04/2006
6951522Active differential assembly
An active differential assembly provides speed control of an associated output shaft. A differential case is rotatably mounted within a housing to drive a pair of output shafts extending from the differential case in opposite directions for distributing driving forc...
10/04/2005
6910399Transmission of internal combustion engine
A transmission of an internal combustion engine is used in a saddle-type vehicle (buggy) for running on rough terrain. A crankshaft of the vehicle is arranged so that it is parallel with the traveling direction of the body. The transmission includes a mechanism for ...
06/28/2005
6732602Dual-gearshift forward backward control mechanism for remote control toy car
A dual-gearshift forward backward control mechanism installed in a remote control toy car to control forward/backward motion and high/low speed gearshift by means of power transmission through a set of gears and two idle gears and the shifting of a switching gear on...
05/11/2004
6694837Forward/reverse transmission for scale model vehicle
A forward/reverse transmission, shiftable under servo-control, includes a movable clutch bell and a free-wheeling, one-way centrifugal lock-out clutch that permits a gear change from forward to reverse or reverse to forward only while the engine is operat...
02/24/2004
6367345Forward/reverse transmission for scale model vehicle
A forward/reverse transmission, shiftable under servo-control, includes a movable clutch bell and a free-wheeling, one-way centrifugal lock-out clutch that permits a gear change from forward to reverse or reverse to forward only while the engine is operat...
04/09/2002
5557979Gear box
In a gearbox (1) with coaxial drive shaft (2) and driven shaft (3), wherein a clutch sleeve (5) which can be displaced in the axial direction (4) of these shafts (2,3) can be moved from a coupling position in which the drive shaft (2) and driven shaft (3)...
09/24/1996
5494466Transmission for dual propellers driven by an inboard marine engine
Transmission for a single engine drive for dual concentric propellers in a straight or V-drive arrangement with the straight-drive including four shafts and nine gears and the V-drive adding two more shafts and four more gears....
02/27/1996
5362081Wheelchair drive system
A wheelchair drive system is described that operatively interposes a plural-speed hub subsystem between conventional rotatable hand wheels and their corresponding drive wheels, thereby providing wheelchair propulsion by rotary motion of the hand wheels an...
11/08/1994
5167168Driving gear for a muscle power driven vehicle, such as a wheel chair
A driving gear for a muscle power driven vehicle, such as a wheel chair, comprising an input shaft drivable by means of a lever, and adapted to be coupled through at least two freewheel clutches to an output shaft arranged to be connected to a wheel hub o...
12/01/1992
5096034Reversing clutch mechanism
A reversing clutch mechanism (10) for use in a transmission (12) of the type having a continuously rotating input shaft (52) and a rotatable output shaft (20). A pair of friction clutches (48, 50) are rotatably disposed on the output shaft (20) and are co...
03/17/1992
5050448Wet flywheel housing
A wet flywheel housing is disclosed wherein a central web member separates the flywheel housing into first and second cavities in which a flywheel and a driven gear set are respectively rotatable. The web member supports a seal engageable with a hubbed ge...
09/24/1991
5046592Servo shift control for a forward/reverse mechanism
A mechanical clutch is provided to selectively interconnect a forward or reverse gear member to a transmission shaft. The clutch is operated by a servo piston and fork structure. The servo piston is slidably disposed in a housing and urged in the forward ...
09/10/1991
4924720Drive reverser and clutch selector mechanism
A transmission particularly adapted for use on a Bidirectionalâ„¢ tractor, is disclosed wherein the engine of the tractor drives an input shaft having first and second spline-mounted drive gears. An idler gear is connected to a power take-off output shaft...
05/15/1990
4907466Key shift transmission
A multi-speed transmission with a shift mechanism which selectively couples at least a forward and a reverse gear operatively positioned on a shaft. The shift mechanism is disposed entirely within the transmission housing and includes a shift key arranged...
03/13/1990
4852420Backward driving device for tricycle
A backward driving device for tricycle, especially scooter motorcycle remodelled for the disabled, to be installed to engine power output shaft, incorporated with a shifter for driving backward....
08/01/1989
4838105Reversing gear assembly for yachts
A reversing gear assembly (13) for use in yachts having an angle drive system comprises a horizontal input shaft (15), to be connected to a horizontally mounted engine (11), and an inclined output shaft (16) to be connected to the propeller shaft (12). Ge...
06/13/1989
4773277Self-contained power take-off
A self-contained remotely actuated power take-off assembly for front mounting to an engine. A sump containing hydraulic fluid is contained within the power take-off housing to supply hydraulic fluid by a gerotor pump connected to the output shaft supplyin...
09/27/1988
4748864Marine reversing gear assembly
A reversing gear assembly (13) for a marine angle drive comprises a horizontal input shaft (15), to be connected to a horizontally mounted engine (11) and an inclined output shaft (16) to be connected to the propeller shaft (12). Gear casing (14) includes...
06/07/1988
4679673Marine reversing clutch assembly
A reversing clutch assembly (13) for marine angle drive which allows the engine (11) to be mounted horizontally. To provide a required inclination to propeller shaft (12), the transmission path is bent within clutch casing (14) by using conical gearing. T...
07/14/1987
4679461Drive device for two-shaft extruding machine
A drive device for a two-shaft extruding machine whereby the directions of relative rotation of the two screw shafts of the machine can be rapidly changed without having to manually change a gear. The drive device includes a first shaft, a second shaft di...
07/14/1987
4662240Continuously variable transmission
A driveline for an engined vehicle, comprises a continuously-variable ratio transmission (1) having an input adapted to be driven by the engine and an output (3), a final drive shaft (8) for providing an output from the driveline, and means for driving th...
05/05/1987
4626164Robot with improved transmission system
A robot toy includes a movable arm which is constituted of alternatingly interconnected three first members and three second members. The first member has a first rotating unit for moving the adjacent second member about its longitudinal axis, and the sec...
12/02/1986
4601348Reversible auger drive kit for post hole digger
A reversible drive kit applied between a power input torque shaft and the driving head of an auger having a pinion that can be exposed and used to connect up with a suitable receiver in the kit. The arrangement of components in the kit frame includes a pa...
07/22/1986
4558607Gear-type change-speed transmission for motor vehicles
In a gear-type change-speed transmission with synchronized reverse speed, the corresponding pair of gears consists of a loose gear which is adapted to be clutched with the driving shaft and of a fixed gear of the output shaft; an intermediate gear is adap...
12/17/1985
4546661Countershaft driven power take-off
A power take-off (PTO) unit with parallel input and output shafts mounted in a PTO case with the input shaft adapted to be piloted in the countershaft of a transmission and the PTO case adapted to be secured to the transmission case. An input gear is slid...
10/15/1985
4519459Power drive rear tine tiller with reversing gear transmission for the tines
An engine, through a suitable transmission, drives the traction wheels of a garden tiller in a forward direction. The engine also drives the tine shaft and tines through another transmission and a differential. The second transmission contains a gear arra...
05/28/1985
4296846Brake release mechanism
A brake release mechanism, particularly for machines having a hydrostatic transmission, such as a tractor. The brake latching member includes a rotational latch pin receivable within a ratchet slot or the like in the brake lever to releasably hold the lev...
10/27/1981
4274523Automatically engageable jaw clutch
An automatically engageable jaw clutch having a toothed drive hub, a toothed power take-off hub, and a clutch star axially displaceable with respect to the power take-off hub. The clutch star is continuously connected with the drive hub for conjoint rotat...
06/23/1981
4245520Reversing apparatus
A gear train including an internal gear is combined with a forced synchronized clutch and a hydraulic coupling to form a reversing apparatus for ship propellers....
01/20/1981
4229990Transmission of ships
An engine driven shaft is connected to an input gear of the transmission which, in turn, is geared to a power branching cascade, providing either for axial branching first followed by lateral branching or a reverse sequence of branching, obtaining in eith...
10/28/1980
4138006Power transmission of the interleaved, multiple friction plate clutch type
A power transmission of the type having an interleaved, multiple friction plate clutch in which helical cam elements are used to provide clutch plate clamp up force and transmit driving torque between the parts. In one form of such a transmission where th...
02/06/1979
4133225Variable speed reversible drive for a harvesting apparatus
An agricultural crop harvester's feeding and gathering units are driven by a power source on the harvester through a sheave assembly journaled on a countershaft mounted towards the rear of the feeding unit. Power is thence transmitted by a variable ratio ...
01/09/1979
3952606Marine gear assembly
A marine gear assembly has a housing with a disengageable and removable end closure and has a pair of countershafts, transfer gears and a pair of clutches which provide for transmitting drive from an input shaft to an output shaft in either of a forward d...
04/27/1976
 
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