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| Number | Title | Issue Date |
| 7481729 | Lightweight sprocket The present invention relates to lightweight sprocket, consisting of a central portion (1) made from light metal alloy, to which a peripheral toothed portion (2) made from ferrous alloy is joined, using rivets (3) for joining said portions (1... | 01/27/2009 |
| 7198337 | Wheel for belted track vehicles A wheel for belted track vehicles includes a hub with an upright central disc. A series of individually cast and machined segments are mounted to the disc in side-by-side relation about the periphery of both sides of the disc. Each segment takes the shape of a trunc... | 04/03/2007 |
| 7101296 | Synchronous rear belt drive system for motorcycles and method of use A synchronous rear belt drive system for belt driven motorcycles and a method of altering the final drive ratio of such motorcycles utilizing the present rear belt drive system is disclosed. The present rear belt drive system provides a plurality of interchangeable ... | 09/05/2006 |
| 7052424 | Cantilever tooth sprocket A drive sprocket assembly for driving an endless chain assembly for propelling a machine has a hub portion and flexible cantilever teeth in which each tooth is separately deflectable upon impact by a bushing of the endless chain assembly. The flexibility of each too... | 05/30/2006 |
| 6953413 | Axial position changing transmission mechanism A mechanism (25) for transmitting torque from one or between several torque transmitting members (14A, 16A) for which sliding in the axial direction between the torque transmitting surface(s) of the mechanism (25) and the member(s) (14... | 10/11/2005 |
| 6899651 | Reduced sound transmitting sprocket A drive sprocket assembly includes a hub having an endless chain connected thereto. A plurality of driver members are mounted between the hub and the endless chain to provide sound suppression. ... | 05/31/2005 |
| 6893369 | Continuously variable diameter drive wheel and continuously variable ratio transmission made therewith A drive wheel for pulling a chain has a diameter that can be changed continuously as the drive wheel rotates. The drive wheel has a drive shaft and there are at least 2 chain-engaging means (teeth or blades) positioned around the drive shaft for engaging a chain. Th... | 05/17/2005 |
| 6889642 | Slide rail with two compression regions The present invention relates to a tensioning rail for a traction drive, especially for an internal combustion engine, said tensioning rail comprising a fastening end section with a pivotable fastening means and a tensioning arm area having, at a predetermined dista... | 05/10/2005 |
| 6843540 | Spur wheel for a chain drive assembly A spur wheel for the chain drive assembly of a tracked vehicle on which the guide elements of a chain roll during the operation of the chain drive assembly is provided. Certain parts of the spur teeth which come in contact with the rolling area of the guide elements... | 01/18/2005 |
| 6826975 | Gear wheel construction A gear wheel comprises a first gear wheel portion, including first half-teeth, which can be coupled to a second gear wheel portion, including second half-teeth, by adjustable coupling means, so that the first and second half-teeth form by pairs the teeth of the gear... | 12/07/2004 |
| 6599210 | Sprocket A sprocket has a mounting part for mounting on a wheel and a corrugated section provided with teeth for engagement with a chain such that the sprocket has a reduces volume and weight and allows for appropriate engagement with the chain by having the posit... | 07/29/2003 |
| 6572500 | Bicycle sprocket with chain support projections A sprocket assembly is provided for a bicycle having a large sprocket and a small sprocket. The large sprocket includes one or more chain support projections formed on the side surface opposed to the small sprocket. Each projection includes a contact port... | 06/03/2003 |
| 6540630 | Reduced sound transmitting sprocket for track-type machines A sprocket for supporting and propelling an endless track assembly of a track-type machine. The sprocket has an endless chain which is resiliently mounted to an outer flange of a hub. The chain has outwardly projecting teeth that interact with the endless... | 04/01/2003 |
| 6431573 | Automatic transmission for a cycle, such as a bicycle, and a cycle having such as transmission A shifting mechanism for a bicycle or other wheeled cycle has at least two gear wheels, of which at least one is segmented. The segments are movable into and out of a driving position. Motion of the segments occurs at a circumferential location out of the... | 08/13/2002 |
| 6361461 | Multiple-speed chain driving device A multiple-speed chain driving device includes a shaft, a rotors'assembly, a chain driving sprocket, and a shifting assembly. The rotors'assembly is mounted on the shaft and includes three rotors which are vertically mounted on each other and enclosed wit... | 03/26/2002 |
| 5967924 | Sprocket buffer for chain driving system In a sprocket buffer, in order to reduce a noise and a shake/vibration of the chain gearing mechanism, an elastic band is provided to be adhered in a bottom of the sprockets; a cylindric pin which is to be inserted into the coupling hole in the bottom of ... | 10/19/1999 |
| 5890814 | Support ring mount for rotating drum A rotatable drum arrangement, wherein the drum is mounted on support rings such that circumferential expansion and contraction of the drum relative to said support rings does not adversely affect the mounting. In a preferred embodiment, drum blocks are mo... | 04/06/1999 |
| 5606801 | Drive sprocket device with flanges A drive sprocket arrangement includes a drive sprocket and a drive ring rolling loosely on the outer periphery of the sprocket. Drive links of the saw chain enter recesses in the sprocket via orifices in the drive ring. The drive ring has at an axial inne... | 03/04/1997 |
| 5564996 | Drive sprocket assembly for chain saws Drive sprocket assembly for chain saws, where a saw chain runs around a loose drive ring that rolls upon cylindrical surfaces of a drive sprocket. Drive links of the saw chain project through holes of the drive ring and enter recesses of the drive sprocke... | 10/15/1996 |
| 5393271 | Quick change sproket A mounting method for split sprockets which embodies radial slots in all mounting bolt positions; except the two mounting bolt positions disected by the split ends of the sprocket, the aforementioned radial slots extending from the center bore outward to;... | 02/28/1995 |
| 5380254 | Finished forged sprocket segment method and apparatus A finished toothed sprocket segment is forged in a cavity of a first die by a second die having a protrusion which extends into the cavity. The sprocket segment has first and second spaced datum pads formed on a first curved surface of a rim of the sprock... | 01/10/1995 |
| 5237234 | Harmonic electrostatic motor An electrostatic motor comprising a stator and a rotor, one of which is equipped with a plurality of lands to which a voltage is sequentially applied. The other of the stator and rotor is made of conductive material. Rolling contact is established between... | 08/17/1993 |
| 5217414 | Linear velocity corrective device Linear velocity corrective device for chains (11) driven by toothed wheels (14), advantageously toothed wheels (14) with few teeth, for closed looped chains (11) extending in a plane or subvertical, operating near the joining zone of said chain (11) with ... | 06/08/1993 |
| 5205794 | Shift mechanism for bicycle A shift mechanism for a bicycle and the like wherein a chain is shifted from sprocket to sprocket by an operator controlling a lever to position a camming surface to direct a guide pawl to tilt a segment of one sprocket whereby the tilted segment aligns w... | 04/27/1993 |
| 5203861 | Plastic sprocket wheel with replaceable teeth A plastic sprocket wheel includes a sprocket body having a series of circularly spaced recesses located around a body circumferential edge, there also being a body side face opening in at least one body side face which communicates with the recess edge op... | 04/20/1993 |
| 5192250 | Multiple sprocket assembly for bicycle A bicycle multiple sprocket assembly comprises smaller and larger sprockets for shiftable engagement with a chain. The larger sprocket includes at least one reluctantly disengageable tooth, at least one chain supporting tooth immediately following the rel... | 03/09/1993 |
| 5073152 | Bicycle transmission A bicycle transmission comprises a sprocket assembly rotatably coupled to the frame of a bicycle, a chain entrained around a sprocket of the sprocket assembly, a sprocket selector for causing the sprocket assembly to shift the chain from one sprocket to a... | 12/17/1991 |
| 5067931 | Sprocket wheel having replaceable teeth A sprocket wheel having replaceable teeth includes a wheel body, a plurality of replaceable teeth, and fixing members to fix each tooth to the wheel body. In the outer periphery of the wheel body are formed a plurality of notches regularly spaced from eac... | 11/26/1991 |
| 5026329 | Isolated drive sprocket assembly A drive sprocket assembly for driving an endless track chain assembly for propelling a vehicle includes a support hub, which is mountable to the power drive system of the vehicle, and a plurality of replaceable sprocket segments which are secured to the s... | 06/25/1991 |
| 4881930 | Sprocket assembly A drive sprocket assembly for driving an endless chain assembly for propelling a vehicle includes a housing, which is mountable to the power drive system of the vehicle, and a plurality of replaceable teeth structures which are secured to the housing. The... | 11/21/1989 |
| 4876796 | Sprocket assembly for chain saws A sprocket assembly including a sprocket adapter driven by the motor of a chain saw. The adapter includes an adapter shaft which has a defined inner opening to fit around the drive shaft of the chain saw. A sprocket is mounted on the adapter shaft. Spline... | 10/31/1989 |
| 4852491 | Device for the in-register transfer of sheets between the printing units of a multicolor press A device the for in-register transfer of sheets and for the conveyance thereof between the printing units of a multi-color press by means of gripper carriages that move on rails and which are driven by an endless chain and which are aligned on the deliver... | 08/01/1989 |
| 4752281 | Isolated tooth drive sprocket assembly A drive sprocket assembly for driving an endless chain assembly for propelling a vehicle includes a support hub which is mountable to the power output portion of the vehicle and a plurality of replaceable teeth which are mountable to the hub. Each tooth i... | 06/21/1988 |
| 4722723 | Rotatable drum assembly A rotatable drum (1) carries, and is driven by, a gear rim (3), with bevel toothing (12), via a flexible frustoconical casing (5) which accommodates distortions of the drum and absorbs axial loading resulting from the bevel toothing. Flexing of the gear r... | 02/02/1988 |
| 4708698 | Driving sprocket for conveyor chain on finger jointing machines A driving sprocket to drive conveyor chain on a finger jointing machine having a base plate with central aperture therein. Drive hubs are mounted on opposed faces of the base plate and are adapted to be rotated by conventional power transmission equipment... | 11/24/1987 |
| 4598608 | Gear crank for a bicycle A gear crank for a bicycle, which comprises a plurality of chain gears and a pair of crank arms, in which some teeth of a larger diameter chain gear among the chain gears are positioned within a range of its center angles of 30° and 60°, forward and rea... | 07/08/1986 |
| 4592738 | Chain gear for a bicycle A multi-state bicycle chain gear assembly includes a chain gear which has a gear body having a plurality of teeth and at least one partial gear also having a plurality of teeth. The partial gear is connected to the gear body such that it is shiftable axia... | 06/03/1986 |
| 4571218 | Adjustable pitch sprocket The pitch of the sprocket is adjusted by radially moving the sprocket teeth (2/24) outward: an annular array of evenly spaced ridges and notches are provided on the mounting surfaces (8) of the adaptors (3) or upon mounting surfaces (27) along the periphe... | 02/18/1986 |
| 4559028 | Adjustment pitch sprocket The pitch of the sprocket is adjusted by radially moving the sprocket teeth outwardly by the corresponding number of cams on a relatively rotatable adjustment plate. The adjustment plate is rotated relative to the adaptor plate that carries the teeth by t... | 12/17/1985 |
| 4531926 | Adjustable pitch sprocket As the sprocket teeth wear, the pitch of the sprocket teeth decreases. As the chain wears, the pitch of the chain increases, this causes the rate of wear to increase. A sprocket after being in use for 1000 hours may have four times the wear as it had afte... | 07/30/1985 |
