Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7231846 | Magnetic fluid shifter damper mechanism A magnetic fluid shifter damper mechanism for a vehicle transmission may include a shift linkage having a first position and a second position, a magnetic fluid damper disposed between a substantially fixed point and a support point on the shift linkage, a fluid ins... | 06/19/2007 |
| 7028750 | Apparatus and method for horizontal casting and cutting of metal billets The invention relates to an apparatus for continuous casting of metal billets comprising a horizontal casting mold having and inlet end and an outlet end. It includes a feed trough for feeding molten metal to the mold inlet end and a horizontal conveyor for receivin... | 04/18/2006 |
| 6991570 | Belt tensioner The invention is an improved power transmission belt tensioner of the type having a first pulley adapted to communicate with a surface of a power transmission belt, a first arm supporting the first pulley upon which the first pulley is rotatably mounted via a first ... | 01/31/2006 |
| 6935216 | Belt tensioning device A belt tensioning device for shifting a pulley such that a belt passed around the pulley is tightened to a predetermined tension. The device includes a rod coupled to the pulley, a member coupled to and movable along the rod, and a spring that exerts a reactive forc... | 08/30/2005 |
| 6789599 | Door driving-mechanism torque transmission, motorized door driving mechanism provided therewith, and door provided therewith A door driving-mechanism torque transmission (20, 40, or 50) for transmitting torque from a door-driving motor assembly, especially a geared motor (36), to a shaft (33) connected to a door panel (31). A driving component rotates ar... | 09/14/2004 |
| 6652336 | Power transmission device for a watercraft The current manufacturing practice in the recreational boating industry is to align and couple a singular inboard engine to a singular impeller drive. The disclosed invention is a power transmission device that allows for coupling of a singular engine to ... | 11/25/2003 |
| 6638191 | Length adjustable belt tensioning arm A tensioning device includes an adjustable tensioning arm having first and second opposed ends, a first mounting bracket secured to the first end of the adjustable tensioning arm, and a second mounting bracket pivotally connected to the second end of the ... | 10/28/2003 |
| 6319163 | Transport device in a packaging machine A transport device in a packaging machine includes a plurality of circulating transport chains which each travel over at least one chain wheel. In order to be able to adjust the transport device to differing formats for the bulk product and/or the packagi... | 11/20/2001 |
| 6312352 | Synchronous belt drive tensioning assembly A tensioning assembly is provided for a synchronous belt drive on a mower deck. A plurality of idlers are mounted for rotation on bracket. One end of the a bracket engages an abutment surface mounted on the deck which restricts its movement, whereas a sec... | 11/06/2001 |
| 6296586 | Tensioning device for a chain or a belt drive for a motor of a hand machine tool A tensioning device for a chain or a belt drive for a motor of a hand machine tool, especially for a chain saw or a grinding or abrasive cutting-off machine, with a longitudinally movable bracket, such as a bracing or an arm, which can be fixed together w... | 10/02/2001 |
| 6083131 | Hydraulic autotensioner A hydraulic autotensioner for keeping constant the tension in a belt. It has a bolt threadedly fixed to a stationary member, an eccentric ring supported by the bolt at an off-center position so as to be pivotable about the bolt, a pulley rotatably mounted... | 07/04/2000 |
| 6004235 | Belt autotensioner A belt autotensioner including: a support arm having one end supported and the other end biased in a predetermined direction; a tension pulley supported by the other end of the support arm; and a friction member held in sliding contact with the support ar... | 12/21/1999 |
| 5993340 | Tightener for a transmission belt Stretcher for a transmission belt comprising a fixed part suitable for being rigidly connected to a support structure, a movable part hinged to the fixed part about a first axis, a pulley carried by the movable part and rotating with respect thereto about... | 11/30/1999 |
| 5938169 | Engine mounting for engine accessory An accessory such as an alternator is mounted to an automobile with a mounting that includes an upper mounting bracket and a lower mounting bracket, these brackets each being connected to the accessory and to the engine. One end of the upper mounting brac... | 08/17/1999 |
| 5895332 | Chain tensioning apparatus for a packaging machine A tensioning system for an endless chain comprising a snail cam mounted on a second shaft parallel to a sprocket shaft which supports a sprocket and chain, a follower running against the snail cam and mounted on a mechanism supporting the sprocket shaft, ... | 04/20/1999 |
| 5746915 | Centrifuge with a drive unit and an endless drive means A centrifuge includes an elastically supported centrifuge basket, a drive unit, and an endless drive arrangement, such as a drive belt arranged on a drive pulley of the drive unit and a driven pulley of the centrifuge basket support unit, for driving the ... | 05/05/1998 |
| 5482266 | Paper conveying apparatus having a belt tension adjusting mechanism A belt tension adjusting mechanism comprises a belt tension adjusting pulley over which the endless belt is placed; a plate having a plurality of recesses in which a rotary shaft of the belt tension adjusting pulley is received; a handle having, at one en... | 01/09/1996 |
| 5389045 | Conveyor belt tensioning mechanism A conveyor belt tensioning mechanism includes a frame assembly, a conveyor belt movable around a head and end pulley on the frame assembly, one of the pulleys being longitudinally movable along the frame assembly, a first adjustment member on the frame as... | 02/14/1995 |
| 5358074 | Motor drive mounting for elevator leg An adjusting device for aligning a drive pulley for an elevator leg or similar belt conveyor. The driving mechanism, normally perpendicular to the axis of the pulley, is pivotally mounted so that the drive shaft may be slightly tilted. The bearing block o... | 10/25/1994 |
| 5320581 | Pulley alignment tool An improved tool is disclosed for use in aligning pulleys. The tool has a shaped configuration with multiple engaging pads adapted to align the pulleys with in about 0.2 degrees.... | 06/14/1994 |
| 5280309 | Single degree of freedom belt drive tensioning system for a plotter apparatus A belt-drive tensioning system for a motor drive positioning system, especially for X-Y digital plotters. The tensioning system employs spring-loading involving motion along only one translational direction to accurately preset and maintain constant the d... | 01/18/1994 |
| 5254046 | Belt retainer An adjustable belt retainer is provided for use with a belt driven mechanism, such as an auxiliary blower for a mower deck. The retainer allows quick and easy adjustment between a belt retaining and a belt removal position. Its L-shaped with one leg being... | 10/19/1993 |
| 5240461 | Blower mounting with belt tensioner A mounting structure for drivingly connecting a belt driven attachment such as an auxiliary blower to a mower deck or similar implement. The connecting structure includes a pivot and sleeve arrangement between one end of the blower and the mower deck for ... | 08/31/1993 |
| 5224459 | Supercharger A centrifugal supercharger system for an internal combustion is directly driven by the associated engine and includes a belt driven drive pulley and bracket for locating an idler pulley for tensioning the belt. A plurality of bosses on the housing plus ar... | 07/06/1993 |
| 5171065 | Mineral mining installation with chain-tensioning system A plough box containing a chain wheel driving a chain to propel a chain used to move a plough is mounted for displacement alongside a machine frame at one end of a scraper-chain conveyor. To adjust the tension in the chain a motor is operated to drive a s... | 12/15/1992 |
| 5046676 | Device and method for adjusting belt tension on a web slitter-rewinder A device for adjusting the tension on a web slitter-rewinder drive belt assembly. More specifically, this device permits the operator to vertically adjust the position of the idler roll on the drive belt assembly using an adjustment mechanism located on a... | 09/10/1991 |
| 5040615 | Quick attaching power-take-off conversion unit The power-take-off conversion unit of this invention is adapted for attachment to a vehicle with a driving pulley rotatable in a generally vertical plane and driving an elastic belt, wherein the vehicle has two mounting brackets located beneath the pulley... | 08/20/1991 |
| 5002518 | Belt tensioning apparatus A belt tensioning apparatus using a spring to provide the proper tension in a belt. A belt/pulley assembly is disclosed with one pulley slidably mounted on a bracket. A spring compressed to a fixed distance to provide a known force is attached to the brac... | 03/26/1991 |
| 4941864 | Clutchable pulley system sans idler-pulley Disclosed is a clutchable pulley system conventionally having an annular first-belt and an annular second-belt, both belts enveloping a plurally-grooved transfer pulley. Also in conventional fashion; the first-belt is constantly tightly trained with a pow... | 07/17/1990 |
| 4883445 | Device for tensioning of a pulling element of a printer A device is disclosed for tensioning of a pulling element (1) of a printer and in particular of a matrix printer, for a back and forth motion of a part (5) or of a carriage includes a first deflection roller (11) and a second deflection roller (12). A wed... | 11/28/1989 |
| 4838838 | Belt driving pulley having a roughened surface to reduce noise Undesirable noise developing from relative sliding between a belt and a pulley when the traction between the belt and the pulley is loosened to halt the belt from being driven by the pulley is eliminated or alleviated by roughening the inner surface of th... | 06/13/1989 |
| 4836101 | Pressing machine A pressing machine has a drive pulley secured to a press crank shaft, an intermediate shaft parallel to the press crank shaft and an input shaft of a material feeding device, the intermediate shaft being supported by a tension adjusting device which is ro... | 06/06/1989 |
| 4832661 | Apparatus and method for maintaining alternator output above predetermined levels A mechanism which maintains a required power level for an electrical use device even though the power level would otherwise drop below that which is necessary at engine idle or alternator speed would increase beyond an acceptable maximum at engine hi idle... | 05/23/1989 |
| 4826469 | Belt adjuster A belt adjusting device for "V" belts which uses a gear made integrally with a nut, in cooperation with a locking mechanism, and gear teeth on a plate to produce relative movement between the plate and the mount, thus tensioning or loosening the "V" belt ... | 05/02/1989 |
| 4803804 | Telescopic belt tightener A telescopic belt tensioner includes a pair of housings mounted to the sides of a conveyor bed. Each housing has an outer tube telescopically mounted in it, and an inner tube telescopically received within the outer tube. The inner tube includes means for... | 02/14/1989 |
| 4802883 | Method of and apparatus for adjusting tension of timing belt Method and apparatus for adjusting tension on a timing belt of an engine. The engine includes a driving pulley on its crankshaft, a driven pulley on its camshaft, an auxiliary pulley, a timing belt bridging over the pulleys and a tension pulley pressing a... | 02/07/1989 |
| 4761154 | Belt tensioner A belt tensioner for a belt and pulley system is disclosed. The tensioner has a camming surface upon which a pulley axle rides, maintaining substantially uniform tension in the belt despite competing forces of the belt tension and a tensioner holding spri... | 08/02/1988 |
| 4708695 | Automatic tension adjusting mechanism for winding and transmitting device for automatic door An automatic tension adjusting mechanism for a winding and transmitting device for an automatic door includes a base fixed in a casing; a mount for a transmission wheel around which a belt is wound; the mount being disposed on the base slidably in the rig... | 11/24/1987 |
| 4678354 | Typewriter cable tensioning mechanism A typewriter carriage cable snubber which is automatically reset at the time power is turned on is described. The cable is normally tensioned by a mechanism which is spring driven to maintain the cable tension at the proper value, and a snubber is provide... | 07/07/1987 |
| 4667586 | Beverage brewing apparatus for a vending machine Beverage brewing apparatus suitable for use in a vending machine has a frame supporting a vertically movable open bottom cylinder and a piston slidably disposed within the cylinder. A brewing cavity is disposed beneath the cylinder to enable reciprocation... | 05/26/1987 |
