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8020464 Gear pairs for power transmission in speed increaser or reducer and methods of forming the same  
This disclosure relates to a gear pair for power transmission in a speed increaser or reducer and its tooth profile forming method. The tooth profiles of driving gear and driven gear are separately...
8011267 Toothed mobile part for play take-up in a gear, particularly in horology  
A toothed mobile part (1) for play take-up in a gear, particularly in horology, having certain (7) of its teeth fixed and entirely rigid, and other (8) of its teeth each intercalated between two...
7926380 Resin gears, developing unit, photoconductor drum unit, image forming apparatus or image reading apparatus having the same  
A resin gear has a plurality of teeth on an outer periphery thereof. One surface of each tooth has a tooth plane which meshes with another gear. The tooth thickness is substantially uniform from a...
7827956 Revolving piston internal combustion engine  
A revolving piston engine incorporating revolving pistons for improving fuel efficiency, increasing power output, easy cooling and reduced vibration. One or more of revolving piston pairs, each...
7823476 Single direction coupling device and correction device including the same  
A single direction coupling device, including a first transmission member (10) fitted with a first saw-like contrate toothing (13), mobile in rotation about an axis XX and axially positioned by an...
7765889 Start-up assistance coaxial gear reducer with increasing ratio up to direct drive  
The invention concerns a decreasing reduction start-up phase coaxial mechanical reducer using constantly variable radius gears, with a final direct drive 1:1 ratio obtained without internal...
7631632 Orbital engine/pump with multiple toroidal cylinders  
The orbital engine or pump comprising of drive train, having several elliptical gears each rotating around focal point with focal distance defined as function of minimum vanes opening, and toroidal...
7581463 Gear modification that enables direct off-center engagement  
A gear and a method for combining a first gear with a second gear including the steps of moving the first gear relative to the second gear such that a first tooth of the first gear contacts a...
7580324 Drive wheel for integration into a clock movement  
A drive wheel for integration into a clock movement, in particular into the clock movement of wristwatches, with at least a dented section by whose teeth a downstream wheel is rotatably drivable...
7543517 Gear made of resin and image forming device having the resin gear  
A gear made of a resin including a cylindrical toothed portion formed at a radially outer location, a shaft-supporting section formed at a radially inner location around the rotational center of...
7366058 Gear for watch movement  
Gear for day of the month display mechanism in a watch movement, including: a driving organ (1),a driven organ (50),characterized in that said driving organ (1) is provided with z1 first teeth...
7296492 Animated toy with geneva mechanism  
An animated children's toy including a gear system for providing intermittent and reciprocal motion. The gear system includes a drive gear and a driven gear. The gear system is adapted to have a...
7258037 Gear protected against overloading  
The invention concerns a gear for precision devices comprising at least two mutually co-operating toothed wheels (10, 14). The teeth (12, 16) of the two wheels have the same thickness (e) and the...
7232391 Synchronous drive apparatus and methods  
A synchronous drive apparatus and method, wherein the apparatus comprises a plurality of rotors comprising at least a first and a second rotor. The first rotor has a plurality of teeth for engaging...
7069804 Gear linkage device with real time check  
A gear linkage device with real time check. The gear linkage device with real time check includes a first gear link and a second gear link. The first gear link includes a flange provided with a...
7036392 Transmission system having a gear with engaging and non-engaging semi-annular sections  
A transmission system including a first gear comprising a first side having an engaging semi-annular section and a non-engaging semi-annular section; and a plurality of engaging gears for engaging...
6905432 Chain drive arrangement  
A chain drive for pivot chains (7) or round link chains (8) having spur gears (2) and a polygonal chain wheel (10) reduces variations in velocity and acceleration transferred to the chains (7),...
6886527 Rotary vane motor  
A rotary vane motor uses a gear train arrangement for controlling the position of the vanes as well as the compression ratio of the motor. The motor includes a first pair of vanes namely a leading...
6802645 Escapement for timekeeper  
The escapement (1) arranged between a motor gear train and a roller (2) to which is attached a sprung balance of a timekeeper, the balance being able to describe an arc of free oscillation and to...
6786125 Cutter device for a printer  
A cutter device has a movable blade, a stationary blade, and a clutch mechanism having a driven gear mounted for undergoing rotation in clockwise and counterclockwise directions and a driving gear...
6761083 Drive device comprising an eccentric gearing  
The invention relates to a drive device, for driving a regulating unit. Said device has a gearing (20) mounted between a motor (10) and the regulating unit (30). The gearing (20) has at least a...
6708576 Escapement for a timekeeper  
The escapement includes first (3) and second (4) escapement wheels meshing with each other, one of these wheels being driven by the gear train. It further includes a lever (5) capable of receiving...
6684743 Staggered gear for bi-directional operation  
A gear drive system for a printer designed to print upon a continuous roll of paper and having a blade used to cut off printed portions of paper from the paper roll is implemented. The gear drive...
6672363 Window shade with a shade panel  
The invention pertains to a window shade with a shade panel, with a rotatable winding shaft 1 for winding up the panel onto the winding shaft 1 to form a roll 2 and for unwinding the panel from...
6604437 Intermittent transmission apparatus  
An intermittent transmission apparatus according to this invention, broadly, includes a driving element and a driven element. The driving element comprises a first cam having a first cam surface, a...
6457452 Mechanism for interconnecting first-and second-shafts of variable speed rotation to a third shaft  
A rotary piston engine (20) is shown that includes a housing (22) having a toroidal working chamber with inlet (56) and exhaust (54) ports. First and second piston assemblies (30 and 32), each of...
6457451 Rotary piston engine  
A rotary piston engine (20) is shown that includes a housing (22) having a toroidal working chamber with inlet (56) and exhaust (54) ports. First and second piston assemblies (30 and 32), each of...
6289754 Drive apparatus for a forming machine  
A drive unit for a forming machine, comprising a rotary drive and a knuckle-joint drive for a gear transmission operating a ram, the knuckle-joint drive being operationally connected through a gear...
6276160 Ice maker with a motor having gears with means to intermittently rotate a gear thereof  
A motor having gears which transmit rotations of a rotor to an output shaft through a gear mechanism made of gear trains, comprises a gear mechanism provided with an intermittent rotation mechanism...
6212967 Variable gear assembly and method  
A variable gear assembly has a cam gear with a plurality of teeth of varying size and configuration, and a rotatably mounted roller gear has a plurality of rollers for meshing engagement with the...
6137962 Power transmission apparatus with built-in phase control  
A power transmission apparatus adapted for an apparatus such as a camera or the like includes a first toothed wheel having teeth at least one predetermined tooth of which differs in tooth thickness...
6082206 Motor having gears with means to intermittently rotate a gear thereof  
A motor having gears which transmit rotations of a rotor to an output shaft through a gear mechanism made of gear trains, comprises a gear mechanism provided with an intermittent rotation mechanism...
5983439 Windshield wiper assembly having a variable speed drive mechanism  
A windshield wiper drive mechanism which interconnects a motor and a wiper assembly which is movable between an in-wipe position and an out-wipe position on a windshield. The drive mechanism...
5983751 Single gear train bicycle drive mechanism  
Apparatus to drive a bicycle wherein two pedals move in a non-fixed, non-180 degree relationship to each other. As the pedal that is being powered by the user moves through an arc less than 180...
5931263 Quasi-elliptical bidirectional progressive safety  
An elevator safety based on having the elevator lift-rod, under the influence of the elevator governor, cause to rotate approximately elliptical cams, called quasi-elliptical cams. The cams are...
5882025 Bicycle with rhombus-like gear with circularly curved apexes  
A bicycle is disclosed with a rhombus-like (preferably 60°-120 °), with circularly curved apexes, drive sprocket gear and a circular driven sprocket on the ear driven wheel. This gear arrangement v...
5619388 Tape loading device  
A tape loading device includes: a plate, cam which moves in a straight line at a constant speed; a rack provided on the plate cam; an arm load gear provided with a gearwheel which engages with the...
5542308 Crank mechanism and machines, especially engines, using same  
An eccentric crank mechanism which communicates motion between a reciprocating piston and a rotary shaft comprising a crank pin having a connecting rod of the piston concentrically journaled...
5517931 Intermittently discharging method and reciprocating pump  
A plunger pump suitable for an apparatus for injecting liquid under high pressure through a plurality of nozzles (104) into the turf. A plunger (34) of the pump is connected through a connecting...
5440945 Hardgeared infinitely variable transmission  
A hardgeared infinitely variable transmission (IVT) is provided in which at least one quick return mechanism is hardgeared to the rotating transmission input shaft. The quick return mechanisms...
5419213 Apparatus and method for the silk-screen printing of multiple curved peripheral surfaces of an article defined by multiple curved peripheral surfaces  
Silk-screen printing apparatus is provided for the silk-screen printing of articles such as oval-shaped bottles and containers on the two major curved peripheral surfaces thereof, sequentially,...
5405300 Mechanism for intermittent rotation of first and second shafts and continuous rotation of a third shaft  
A rotary piston engine (20) is shown which includes a housing (22) having a cylindrical working chamber with inlet (56) and exhaust (54) ports. First and second piston assemblies (30 and 32) each...
5317927 Measuring device  
A measuring device includes a measuring mechanism, a counting mechanism, a variable transmission gear assembly disposed between the measuring mechanism and the counting mechanism, and an adjustment...
5251507 Non-circular gear pair  
In a non-circular gear pair comprising two non-circular gears maintained engaged, those gears have first and second intermeshing rotation parts in such a manner that the first intermeshing rotation...
5224847 Rotary engine  
Improved rotary engines and related rotary mechanisms have a pair of interfitted rotor discs with peripheral rotor heads that define a circular series of chambers in a housing. A non-circular gear...
5209134 Synchronous bidirectional gearing mechanism  
A bidirectional synchronous gearing mechanism includes a first gear with a first and second gear profile and a second gear identical to the first gear and with identical first and second gear...
5170677 Elliptic gear having a constant velocity portion  
An elliptic gear having a constant velocity portion, wherein a pitch circle is a closed curve composed of: a constant velocity portion pitch curve, in which the radius from the center of rotation...
5146803 Noncircular rolling joints for vibrational reduction in slewing maneuvers  
A rolling joint is provided for obtaining slewing maneuvers for various apparatuses including space structures, space vehicles, robotic manipulators and simulators. Two noncircular cylinders,...
5142937 Driving apparatus with a speed changer for a bicycle  
A driving apparatus with a speed changer for a bicycle using a pair of non-circular gears for performing an exponential function angular velocity modulation for the speed changer. The driving...
5111707 Engine starter apparatus  
An engine starter apparatus comprising first and second noncircular gears, a pinion, and a starter motor. The pair of noncircular gears is interposed between a crankshaft and a ring gear of an...
Matches 1 - 50 out of 160 1 2 3 4 >