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| Number | Title | Issue Date |
| 7195052 | Cord-driven rotator for driving roller of window blind A rotator, which is driven by an endless cord member to rotate, is used in a window blind for driving a roller of the window blind. The rotator includes a base having a shaft, a first clamping plate and a second clamping plate rotatably serially mounted on the shaft... | 03/27/2007 |
| 7156764 | Extensible chainwheel for a bicycle powertrain assembly A driving sprocket, or chainwheel, for a bicycle crankset having a toothed ring whose ring is divided into a plurality of segments, the segments being borne by a frame that is rotationally movable about a crankset axle, each sprocket segment being movable between a ... | 01/02/2007 |
| 7017698 | Motorcycle with dual drive chains A motorcycle having two drive chains. The gearbox output includes a left front sprocket and a right front sprocket. The rear wheel includes a left rear sprocket and a right rear sprocket. Left and right chains connect the respective front and rear sprockets. Power i... | 03/28/2006 |
| 6973783 | Zero turn drive apparatus A drive apparatus for a zero turn vehicle or similar application comprising a pair of pumps mounted in a common housing and having coaxial input shafts and an input shaft mounted in the common housing perpendicular to the two pump shafts. A pair of center sections o... | 12/13/2005 |
| 6925794 | Chain, chain wheel and chain transmission for lifting gear A chain, a chain wheel and a chain transmission for a lifting gear in accordance with the present invention increases the dynamic resistance of a round steel chain that is primarily intended for use in combination with a lifting gear. The chain members (5, 6)... | 08/09/2005 |
| 6848757 | Elastic crawler traveling apparatus and sprocket for crawler belt used in the same An elastic crawler traveling apparatus having an elastic crawler in a shape of an endless belt, a sprocket for a crawler belt arranged to be brought into contact with an inner face of the elastic crawler, a driven wheel, and a rolling wheel, the elastic crawler incl... | 02/01/2005 |
| 6796919 | Pulley tire and rim A pulley tire (10) and rim (12), the rim (12) comprising two rim halves (14, 16) adapted to be mounted to a hub (18) and to clampingly engage the pulley tire (10), the pulley tire (10) having provided thereon one or m... | 09/28/2004 |
| 6719127 | Compensation for shaft twist in the drive system of modular conveyor belts A sprocket drive system for a modular conveyor belt that compensates for drive-shaft twist under load. The drive system includes a plurality of belt drive surfaces spaced apart across the width of the underside of each row of a modular conveyor belt. A drive shaft s... | 04/13/2004 |
| 6612424 | Drive shaft for scraper chain conveyors for double inboard and double outer chain conveyor belts A drive shaft (5) with at least one chain wheel (7) for the drive of chain scraper conveyors, especially for underground mining operations, with a full-width drive shaft (5) mounted on both ends in bearings (4) on the machine frame (1), which has outer ge... | 09/02/2003 |
| 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 |
| 6413180 | Power transmitting mechanism with silent chain and sprockets A power transmitting mechanism includes a first silent chain trained around teeth of a first driving sprocket and a teeth of first driven sprocket, and a second silent chain trained around teeth of a second driving sprocket and teeth of a second driven sp... | 07/02/2002 |
| 6293884 | Cluster sprockets for bicycle transmissions and other prime movers This invention comprises a multi-sprocket or cluster gear assembly with a plurality of progressively sized sprockets or gears that are positioned adjacent to each other so as to define an increasing diameter sprocket assembly. Each sprocket comprises a no... | 09/25/2001 |
| 6279752 | Wide rectangular clarifiers A waste water treatment system for removing sludge from within a rectangular clarifying tank having a plurality of sludge collector flights attached to a pair of parallel chains for collecting sludge and scum within the waste water. Each of the collector ... | 08/28/2001 |
| 6267701 | Sprocket for multiple axis phased chain systems A chain and sprocket system includes a plurality of chains and phased or offset sprockets. Problems related to equalizing or sharing the load between the driven sprockets in a multiple axis, phased system are eliminated by providing sprockets that rotate ... | 07/31/2001 |
| 6161445 | Guide sprocket assembly A guide sprocket assembly for use in combination with a non-driven, rotating tail shaft. The guide sprocket assembly includes a lock plate assembly securely fixed to the tail shaft for rotation along with the tail shaft. The lock plate assembly includes a... | 12/19/2000 |
| 6142900 | Sprocket with thin body and grooved teeth A sprocket includes a body, and teeth formed on the peripheral edge of the body. The teeth have a thickness greater than that of the body. This design enables the use of an existing chain and brings about a reduction in the weight of the overall sprocket.... | 11/07/2000 |
| 6102821 | Multiple sprocket assembly for a bicycle A multiple sprocket assembly includes one or more sprocket subassemblies. Each sprocket subassembly includes a spider-type sprocket support which supports first and second sprockets. The sprocket support includes a boss and a plurality of supporting arms ... | 08/15/2000 |
| 6070713 | Can end fabricating system including an improved conveyor belt drum A belt drive assembly for driving a continuous belt having a plurality of drive teeth openings includes a drive shaft, a belt support surface and a plurality of drive teeth. The belt support surface is movably supported relative to the drive shaft so as t... | 06/06/2000 |
| 6013001 | Bicycle sprocket having recesses beneath chain receiving edges A bicycle sprocket includes a sprocket body having a first lateral side surface, a second lateral side surface opposite the first lateral side surface, and an inner peripheral surface. A plurality of teeth extend radially outwardly from the sprocket body ... | 01/11/2000 |
| 5992644 | Plastic flight type water treatment system for rectangular clarifiers In accordance with the teachings of the present invention, a waste water treatment system for removing sludge from within a rectangular clarifying tank as provided. The waste water treatment system includes a plurality of sludge collector flights attached... | 11/30/1999 |
| 5947265 | Chain drum arrangement for scraper chain conveyors This invention relates to a chain drum arrangement for a central or double central scraper chain conveyor, comprising a divided chain wheel, the shell-type chain wheel segments of which are attached, locked in rotation and detachably, via an axial splined... | 09/07/1999 |
| 5876296 | Gear shifting sprocket set for bicycle chain wheel A bicycle sprocket set is composed of a small sprocket and a large sprocket coaxial with the small sprocket. The large sprocket is provided with an axially oriented recess in the bottom portion located between the first tooth and the second tooth of the l... | 03/02/1999 |
| 5788837 | Plastic flight type water treatment system for rectangular clarifiers In accordance with the teachings of the present invention, a waste water treatment system for removing sludge from within a rectangular clarifying tank as provided. The waste water treatment system includes a plurality of sludge collector flights attached... | 08/04/1998 |
| 5766106 | Crankset assembly A crankset assembly employing a steel spider construction without adding excessive weight, and accommodating virtually unlimited combinations of bolt circle diameters and types of chain rings that include the crankset assembly. The crankset assembly may i... | 06/16/1998 |
| 5738603 | Derailleur Derailleur with at least two sprockets on a sprocket set which is located around a pedal axle of a bicycle, which sprockets are provided with chain transfer assistance measures to assist the transfer of the chain in upshifting or downshifting, whereby the... | 04/14/1998 |
| 5733215 | Multi-speed sprocket assembly of a bicycle A multi-speed sprocket assembly of a bicycle includes at least a small sprocket and a large sprocket which enable the chain to engage with different sprockets to attain the chain shifting effect by the guidance of the rear derailleur device. The improveme... | 03/31/1998 |
| 5690570 | Multistage sprocket assembly for a bicycle A sprocket assembly includes a larger diameter sprocket having a plurality of teeth formed on an outer periphery thereof, and a smaller diameter sprocket having a plurality of teeth formed on an outer periphery thereof. A driving chain meshes with the plu... | 11/25/1997 |
| 5611744 | Bicycle crank driven chain wheel assembly A bicycle crank driven chain wheel assembly uses a special-shaped chain wheel. The chain wheel has portions of different driving radii. The portion having smaller driving radii is engaged in transmission when the bicycle runs on slopes, so that the bicycl... | 03/18/1997 |
| 5609536 | Bicycle freewheel gear cluster gear-shifting mechanism Disclosed is an improvement on bicycle freewheel gear cluster gear-shifting mechanism having at least at least a large-diameter sprocket wheel, an intermediate-diameter sprocket wheel. The improvement includes a plurality of protrusions provided on the ri... | 03/11/1997 |
| 5589135 | Height adjustable stand for laboratory equipment A height adjustable stand for laboratory equipment, in particular for rotary evaporators, possesses a holder arrangement (6). The holder arrangement is able to be displaced vertically on a stand post (5). By way of a motor driven lifting arrangement (9, 1... | 12/31/1996 |
| 5569107 | Multi-step bicycle transmission sprocket assembly A bicycle multi-step transmission sprocket assembly includes a large sprocket gear, an intermediate sprocket gear, and a small sprocket gear. The intermediate sprocket gear is provided in the top surface of a predetermined tooth with a first recess and is... | 10/29/1996 |
| 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 |
| 5533938 | Pocket chain wheel In a pocket chain wheel having two groups of pockets (1) for chain links (5) passing the wheel at a tilt, said groups of pockets being arranged side by side in a view perpendicular to the wheel axis (3), the bases (2) of the pockets (1) are shaped such th... | 07/09/1996 |
| 5514042 | Multistage sprocket mechanism for a bicycle A multistage sprocket mechanism includes one or more sprockets each having two groups of teeth alternatively formed in the peripheral portion. The sprockets each includes two surfaces having a number of recesses and depressions alternatively formed in the... | 05/07/1996 |
| 5480357 | Freewheel assembly for bicycle A freewheel of a bicycle includes a number of sprockets engaged on a sprocket ring. An outer thread is formed in the outer portion of the sprocket ring for engaging with a lock nut. The lock nut includes a number of serrated teeth formed on one side surfa... | 01/02/1996 |
| 5456638 | Composite gear with restraining member A composite gear member and gear set using the composite gear member is provided. The composite gear member is formed of a generally circular disk having a pair of link plate supporting surfaces separated by a central section. A roller chain which include... | 10/10/1995 |
| 5413534 | Chain shift aiding structure for bicycle sprocket A sprocket assembly for a bicycle having a large sprocket and a small sprocket. The large sprocket includes chain support projections formed on the side surface opposed to the small sprocket. Each projection includes a contact portion defining a contact s... | 05/09/1995 |
| 5328416 | Synchronous drive belt A synchronous drive belt for use in low speed and high torque applications has a zero pressure angle over a relatively greater portion of the fore and aft flank surfaces of the belt teeth. A pulley is also described which is particularly suitable for use ... | 07/12/1994 |
| 5312304 | Convertible sprocket for motion picture film A convertible sprocket for film and like media accommodates different media formats. The sprocket includes a first sprocket wheel support and a first sprocket wheel having a first dimension and supported by the sprocket wheel support. A second sprocket wh... | 05/17/1994 |
| 5303477 | Multi-ring sprocket A sprocket for a chain including a thick hub portion and a plurality of thinner sprocket rings mounted on the hub. The hub has a rounded polygon peripheral configuration and the rings have complementary bores to receive the hub. The rings have sprocket te... | 04/19/1994 |
