Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8118699 | Sprocket for chain A sprocket for a chain drive using a roller or bushing chain has a plurality of different pitch angles, including both pitch angles larger than the standard pitch angle, and pitch angles smaller than the standard pitch angle. The number of pitch angles in the sprock... | 02/21/2012 |
| 8066602 | Tension-reducing random sprocket A sprocket is provided having a plurality of teeth around its circumference. Adjacent teeth are separated by roots each having a root radius defined as the distance between the center of the sprocket and a point along the root closest to the sprocket center in a rad... | 11/29/2011 |
| 8057337 | Debris ejecting sprocket and system A debris ejecting sprocket comprising a body (100), a plurality of teeth (101) projecting from the body, a plurality of grooves (102) in alternating arrangement with the teeth, each groove receives a belt tooth, a cavity (103) disposed ra... | 11/15/2011 |
| 7914408 | Multiple-cushion ring sprocket assembly A cushion ring sprocket assembly includes a sprocket body with a plurality of teeth arranged in a row. The sprocket body includes first and second opposite axial tooth faces and first and second hubs that extend axially outward relative to the first and second tooth... | 03/29/2011 |
| 7846047 | Bicycle sprocket having a thickened spline A sprocket comprises a sprocket body; a plurality of teeth extending radially outwardly from the sprocket body and dimensioned to engage a bicycle chain; and a spline extending radially inwardly from the sprocket body, wherein the spline includes a radially outer su... | 12/07/2010 |
| 7819766 | Device for coupling pulleys or gear wheels A coupling device (10) for a gear wheel (12), a pulley or other similar units comprising a support (18) for a gear wheel (16) or an operating portion of the pulley or unit, means for centering and drawing the crown gear (16) or the... | 10/26/2010 |
| 7789781 | Timing belt structure with corner groove The timing belt and a coupling structure of the same are disclosed, in which a stress focused at a corner portion decreases by forming an optimum shaped groove at a corner portion of a timing belt, so that it is possible to largely increase a fatigue life span of a ... | 09/07/2010 |
| 7749117 | Ovoid chainrings for optimising conventional pedaling Improvement in the design of variable original radius chainrings for coupling to conventional bicycle cranks in order to apply traction, which primarily consists of its being provided with a plurality of possible anchorages to the crank, so that the user may adjust ... | 07/06/2010 |
| 7686721 | Bicycle chainring A bicycle chainring is formed from a first member and an second member. The first member includes a center rotational axis, a crank attachment portion with a plurality of chainring attachment openings and an annular tooth portion with a plurality of chain engaging g... | 03/30/2010 |
| 7654925 | Tension-reducing random sprocket A sprocket is provided having a plurality of teeth around its circumference. Adjacent teeth are separated by roots each having a root radius defined as the distance between the center of the sprocket and a point along the root closest to the sprocket center in a rad... | 02/02/2010 |
| 7534182 | Sprocket for chain In a sprocket for a chain transmission, teeth are disposed around the circumference of the sprocket at intervals. Arc-shaped tooth gap bottoms are formed between adjacent teeth, and each tooth gap bottom is continuous with the facing tooth surfaces of its adjacent t... | 05/19/2009 |
| 7442139 | Conveyance system In a slat conveyor, slats for supporting conveyed articles and personnel extend between two side-by-side, spaced, endless roller chains engaged with driving sprockets at one end of the conveying path and driven sprockets at the other end. At a location radially outw... | 10/28/2008 |
| 7442140 | Gear assembly for a bicycle gear change Gear assembly for a bicycle gear change, comprising at least one gear with a larger diameter and at least one gear with a smaller diameter. The selected gear, generally of a larger diameter, has at least one sector dedicated to upwards shifting that may include a pl... | 10/28/2008 |
| 7435197 | Rear sprocket for bicycle transmission A bicycle transmission has among other things a rear hub with a freewheel with an outer freewheel body supporting a plurality of sprockets. A chain is shifted between adjacent pairs of the sprockets by a rear derailleur. Each sprocket includes inner attachment porti... | 10/14/2008 |
| 7416500 | Random engagement roller chain sprocket and timing chain system including same A sprocket and a roller chain drive system including same are disclosed. The sprocket is a random engagement sprocket comprising a first plurality of A-profile teeth formed with a first asymmetric profile and a second plurality of B-profile teeth formed with a secon... | 08/26/2008 |
| 7351171 | Bicycle hub outer and bicycle hub A rear hub has a hub shaft and a hub outer that is configured to be mounted in a freely rotatable manner to the hub shaft. The hub outer has an outer main body and an adapter. The outer main body is arranged on the radially inward side of a sprocket, and has a first... | 04/01/2008 |
| 7334500 | Pedal crank having solid coupling A pedal crank includes a crank arm having a hole formed in one end to receive one end of a crank shaft which may be rotatably attached to a bicycle frame. An expanding device may be engaged in the end of the crank shaft for expanding the crank shaft to engage with t... | 02/26/2008 |
| 7316458 | Ventilating wheel for snowmobile slide rail suspension system A ventilating wheel provides a plurality of angled vanes extending from a hub. The ventilating wheel secures to the slide rail of a snowmobile suspension system. An endless track extends over the underside of the slide rail. A Hyfax may secure to the slide rail inte... | 01/08/2008 |
| 7300373 | Power transmission mechanism and manipulator A power transmission mechanism comprising: a flexible power transmission element; a pair of a drive pulley and a driven pulley on which the flexible power transmission element is wound, each the pulley having a pin-embedding hole formed to extend from the outer circ... | 11/27/2007 |
| 7258638 | Sprocket of a chain transmission for a bicycle A sprocket of a chain transmission for a bicycle is described, intended to be coupled with a further sprocket with a smaller diameter in a group of sprockets integral in rotation. The sprocket comprises a plurality of teeth which follow each other on the sprocket se... | 08/21/2007 |
| 7244203 | Bicycle derailleur A bicycle derailleur is provided with a chain guide that basically includes inner and outer guide plates, a guide pulley and a tension pulley. The tension pulley is rotatable about a rotation axis between free ends of the guide plates. The tension pulley has an annu... | 07/17/2007 |
| 7244205 | Key sprocket drive system A key sprocket drive system for a conveyor belt having a drive drum having an outer surface. The outer surface of the drive drum is adapted to engage a securement means. A contoured collar has an inner surface and an outer surface. The contoured collar is adapted to... | 07/17/2007 |
| 7210573 | Conveyor belt A thermoplastic endless belt (100, 150) has a smooth outer surface (105) substantially free of discontinuities and an inner surface (108) with a plurality of teeth (108) at a given belt pitch (112). The teeth (108) are adapt... | 05/01/2007 |
| 7179341 | Integrated sprocket and housing and manufacturing method therefor An integrated sprocket and housing used in a variable valve timing mechanism. The integrated sprocket and housing includes: a sprocket portion which is formed in a substantially annular shape, and which has teeth on the outer circumference thereof; and a housing por... | 02/20/2007 |
| 7175003 | Disk brake device for vehicle A hub-side mounting part formed with the side surface of a wheel hub is provided so that an outer diameter thereof is larger than a diameter of a mounting pitch circle of a disc rotor. A hub-side through-hole and a rotor side through-hole, which are formed therein t... | 02/13/2007 |
| 7159955 | Traction band and sprocket for vehicles This invention relates to an endless traction band that is used to propel band laying vehicles [i.e., vehicles which use endless traction bands rather than tires to contact the terrain over which they are driven, e.g., tractors, tanks, bulldozers, etc.]. A novel spr... | 01/09/2007 |
| 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 |
| 7147099 | Sprockets in a cleanable modular belt conveyor An easy-to-clean conveyor with sprockets that reveal the hinge area of a modular conveyor belt to a fluid spray. A conveyor includes a modular belt constructed of rows of belt modules hingedly linked together in series by hinge pins into an endless belt loop. A spro... | 12/12/2006 |
| 7131656 | Sprocket support member for a bicycle sprocket assembly A bicycle sprocket assembly having at least one subassembly including a sprocket support member and two sprockets. The support member has at least one engagement portion for coupling it to a bicycle freewheel and at least one fastening portion arranged in a radially... | 11/07/2006 |
| 7128673 | Sprocket for chain In a sprocket for a roller chain, the tooth form is such that the distance between the tooth center line and a part of the front tooth surface, at a location on the tooth head side of the pitch line, is greater than the distance between the tooth center line and the... | 10/31/2006 |
| 7125356 | Tension-reducing random sprocket A sprocket is provided having a plurality of teeth around its circumference. Adjacent teeth are separated by roots each having a root radius defined as the distance between the center of the sprocket and a point along the root closest to the sprocket center in a rad... | 10/24/2006 |
| 7123431 | Precise positioning of media An apparatus for exactly positioning a medium mounted on a spindle is provided, whereby the apparatus comprises a device for continuously changing the angular position of said medium with respect to a predefined reference position by rotating said spindle. Additiona... | 10/17/2006 |
| 7118505 | Integrally formed gear set with a plurality of gears An integrally formed gear set with a plurality of gears comprises a first, a second and a third gear. Each gear has a plurality of teeth and a plurality of recess portions. The teeth and recess portions are alternatively arranged. The first, second and third gears a... | 10/10/2006 |
| 7114788 | Angled traction lugs for endless band This invention refers to the traction lugs of reinforced elastomeric endless traction bands, and more particularly to those which are used on heavy vehicles like defense vehicles or for skid steer vehicles. More specifically, the invention relates to traction lugs w... | 10/03/2006 |
| 7108622 | Roller chain transmission device A roller chain transmission comprises a sprocket having at least first teeth and second teeth having different tooth forms, the first teeth and second teeth being randomly arranged, and the number of the second teeth not exceeding four times of the number of the fir... | 09/19/2006 |
| 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 |
| 7097580 | Sprocket for a silent chain and method of manufacturing the same A sprocket for preventing the partial wear on the teeth of the sprocket. The teeth of the sprocket comprised of a pair of side portions located on opposite sides of a tooth and a central portion located between the pair of sides. The pair of side portions has a hard... | 08/29/2006 |
| 7044876 | Bicycle sprocket having lateral protrusions for use in a multiple sprocket assembly A sprocket is adapted to be mounted to a sprocket support that rotates around an axle. The sprocket comprises a sprocket body having a side surface and an inner peripheral surface defining a sprocket-mounting opening, wherein at least one portion of the inner periph... | 05/16/2006 |
| 7041020 | Deflection pulley for a traction mechanism drive The invention relates to a deflection pulley (1), intended for a traction drive, which includes a rolling-contact bearing as well as a ring body (4). A securing screw (8) as well as a spacer sleeve (9) serve as retaining elements. In orde... | 05/09/2006 |
| 7032983 | Silent and reduced vibration chainwheel A silent and reduced vibration chainwheel includes a disk, multiple teeth and an energy absorber. The disk has an outer edge, two opposite sides and at least one recess. The teeth are formed radially at and extend out from the outer edge of the disk. The energy abso... | 04/25/2006 |
