...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 8042657 | One-way load self-control spiral type brake A one-way load self-control spiral type brake, including a reel, two bearing frames on the reel, a brake shaft set between the two bearing frames, and two ends of the brake shaft connecting a transmission shaft. A front end of said brake shaft equipped with a fixing... | 10/25/2011 |
| 7360634 | Frictional engagement device A device for frictional inter-engagement between two mutually movable parts (13, 14). A lever mechanism exerts counter-directed pressing forces towards both parts to transfers movement between them. A lever (25) has a free lever end (27) contact... | 04/22/2008 |
| 7350629 | Floating damper A floating damper assembly operates between first and second associated components. A damper is adjustably mounted in the first component and includes a damper gear engaged with a gear on the second component. The second component defines a guide surface and the dam... | 04/01/2008 |
| 7207087 | Device for damping the movement of movable furniture parts in their closing region A device for damping the movement of movable furniture parts to their closed position provides for a housing which can be fastened to a fixed wall part or carcass part, in which housing a lever is pivotably held or a plunger is slidably guided, with said lever or pl... | 04/24/2007 |
| 7152718 | Damper A damper includes a frame, a main gear mounted to the frame for rotation about an axis of rotation, and a spring operably connecting the main gear and the frame such that rotation of the main gear tensions the spring. The main gear has a circumferential recess forme... | 12/26/2006 |
| 7080721 | Oneway clutch and mounting structure thereof A oneway clutch supporting structure comprises a oneway clutch which comprises a stationary race element and a rotational race element to be fitted in a rotational member, the race elements respectively having peripheral surfaces separated from each other in the rad... | 07/25/2006 |
| 7070357 | D-shaped slot having a relief A mechanical element having a slot adapted to receive a shaft. The slot comprises a circular portion; a planar portion; and two reliefs. Each relief is disposed intermediate the circular portion and the planar portion. In addition, each relief comprises a circular s... | 07/04/2006 |
| 7065829 | Damper device A damper device applies damping force to a movable body assembled on a fixed body. The damper device includes a damping part, a clutch case attached to one of the fixed body and the movable body in a state having received the damping part, and a rack part moving or ... | 06/27/2006 |
| 7059454 | One-way braking device A one way braking device has a first sealed chamber filled with a viscous fluid, a braking rotor being rotably supported within the chamber, a housing or the braking rotor, respectively, coacting with a pinion which in turn cooperates with a tooth rod or a gear or t... | 06/13/2006 |
| 6910557 | Slide damper with spring assist A slide damper for use with an associated sliding object that is movable between a first position and a second position provides an assisted, dampened return. The slide damper includes a housing having a track, a gear on the housing and a cover configured for moveme... | 06/28/2005 |
| 6848759 | Self-closing slide mechanism with damping A self-closing slide is movable between an open position and a closed position. The slide includes a frame, a linear gear on the frame and a carriage configured for movement along the frame. A biasing element operably connects the frame and the carriage to bias the ... | 02/01/2005 |
| 6695101 | Spooling apparatus A spooling apparatus includes a housing, a spool received in the housing so that the spool can be rotated from an original position by an external force and automatically returned to the original position when released from the external force, a rope woun... | 02/24/2004 |
| 6675861 | Brake for a cordless blind A window covering including a head rail, a bottom rail, a window covering material extending between the head rail and bottom rail, a first and second lift cords extending between the head rail and the bottom rail, a spring motor configured to bias the bo... | 01/13/2004 |
| 6666306 | Damping device for movable furniture parts A damping device (14) for movable furniture parts comprising a fluid damper which is in the form of a rotational damper (20) and which includes two members which are rotatably movable relative to each other, namely a housing and a drum disposed in the hou... | 12/23/2003 |
| 6648106 | One-way clutch and a supporting structure To ensure durability of a one-way clutch, by reducing surface pressures applied to side bearings, a one-way clutch has end bearings that are disposed between an outer race and an inner race and that maintain concentricity between the races. In a supportin... | 11/18/2003 |
| 6634874 | Scroll compressor with anti-reverse rotation clutch A low cost protective clutch member is positioned adjacent an end of the drive shaft in a scroll compressor. The device is a thin washer having a tab which is selectively driven against the housing stop when the compressor is driven in a forward direction... | 10/21/2003 |
| 6488130 | Twist-grip brake for a cargo portage device An apparatus for the application of a braking force to a wheel of a wheelbarrow, hand cart or other type of a cargo portage device includes a twist grip mechanism with a latching type of a ratchet attached to the handlebar of the device. As the twist grip... | 12/03/2002 |
| 6473936 | Damping mechanism The present invention provides a damping mechanism capable of varying the moving speed of an openable door or the like in stages as necessary. Such damping mechanism includes a damping body (1) installed with a damper mechanism and allowing a rotative sha... | 11/05/2002 |
| 6189660 | Ratchet wheel device for a baby walker A ratchet wheel device for a baby walker provided on the bottom surface of a chassis of the baby walker, it is comprised of a wheel rim, two transmitting gears, a transmitting member and a cover. The wheel rim is provided therein with a receiving chamber.... | 02/20/2001 |
| 6131717 | Braking roller An improved braking roller apparatus for preventing unintended movement of cargo containers within cargo compartments of the character found in cargo transport vehicles such as cargo aircraft. The improved braking roller apparatus includes highly novel, i... | 10/17/2000 |
| 6131242 | Damping device A damping device is provided for a part that is pivotable between two end positions, with a viscous brake for delaying the pivoting movement. The brake has a brake wheel and a drive member that engages the wheel at a tangent. The wheel and drive member mo... | 10/17/2000 |
| 6076640 | Fishing reel with dynamic drag A dynamic drag for a fishing reel. The drag has a brake rotor and a brake pad moveable into engagement with the rotor, and a pivotally mounted eccentric engaging the brake pad to force it frictionally against the rotor. In one embodiment the eccentric is ... | 06/20/2000 |
| 6039115 | Safety coupling for rotary pump A safety coupling for preventing backspin at excessive speeds of a torque transmitting drive string which stores reactive torque due to torsional stress. The safety coupling includes a rotatable driving member to be coupled with a rotatable driven member ... | 03/21/2000 |
| 5947030 | Amusement device in the form of a roller coaster, a monorail or the like A recoil blocking device for vehicles (1) for roller-coasters, monorails or the like. To avoid the ratchet noises occurring in the case of prior-art ratchet-type blocking mechanisms of such recoil blocking devices, the present invention provides a catch d... | 09/07/1999 |
| 5909848 | High pressure liquid rotary nozzle with coil spring retarder A high pressure liquid nozzle housing encloses a self-rotating speed-controlled nozzle. A cylindrical sleeve in the housing forms an inwardly facing friction surface engageable by a nozzle-driven friction generating speed control mechanism to provide incr... | 06/08/1999 |
| 5884564 | Anti-backup device for power-and-free conveyor systems In a power-and-free conveyor system an anti-backup devise for attachment at a work station comprising a block, and a stop and a cam mounted on the block and a spring for applying force to the cam to frictionally engage a wheel of a trolley on the power-an... | 03/23/1999 |
| 5868226 | Screw-released roller brake A screw-released roller brake including an input drive assembly, an output drive assembly, a plurality of locking sprags, a mechanical tripper nut for unlocking the sprags, and a casing therefor. The sprags consist of three dimensional (3-D) sprag members... | 02/09/1999 |
| 5845746 | Wheelchair dynamic braking system An automatic braking system for wheelchairs which prevents rearward, downhill motion of wheelchairs while having no effect on horizontal or uphill motion. The braking system is made up of circular ratcheted plates which are attached to the axles of the dr... | 12/08/1998 |
| 5839548 | Motion control device for rotary dampers A one-way damping system is provided for dampening the movement of a closure member when the closure member is moved in a first direction toward its opened position such that the closure member is opened at a controlled rate of speed, and for permitting t... | 11/24/1998 |
| 5823116 | Shock-absorbing tow bar coupler A shock-absorbing tow bar coupler is disclosed. The tow bar coupler includes a housing dimensioned and configured at forward end to engage a trolley of a power and free conveyor. At its rearward end, a clevis is disposed within and rotatably attached to t... | 10/20/1998 |
| 5715756 | Ride attraction anti-roll back system An amusement ride attraction has an anti-roll back track with stops or cross bolts covered by a continuous brush material. A vehicle such as a roller coaster car or water flume boat has an anti-roll back pawl which rides above the fiber material on skis, ... | 02/10/1998 |
| 5690194 | One-way pivoting gear damper A pivoting gear damper for use with a rotary damper includes a toothed gear rack movable between a first position and a second position corresponding to movements in first and second directions. A pivotal bracket is provided for rotation between first and... | 11/25/1997 |
| 5664653 | Rotary unit having clutch function A rotary unit with a built-in clutch which is short in its axial length. The rotary unit has an inner member having an outer periphery formed with a raceway groove and a pair of cylindrical surfaces on both sides of the raceway groove, and a cylindrical o... | 09/09/1997 |
| 5551510 | Safety coupling for rotary down hole pump A safety coupling for preventing backspin at excessive speeds of a torque transmitting drive powering a drive shaft which stores reactive torque due to torsional stress is disclosed. The safety coupling includes a rotatable driving member to be coupled wi... | 09/03/1996 |
| 5545019 | Scroll compressor drive having a brake Disclosed are several embodiments of a stopping device operable between the drive shaft and/or orbiting scroll of a scroll compressor and a fixed wall forming part of the compressor, for the purposes of automatically engaging the wall upon reverse operati... | 08/13/1996 |
| 5482221 | Single action fly fishing reel having an infinitely variable silent drag In a fly reel, drag is provided by use a helically wound wire spring mounted coaxially over a fixed post attached to the reel frame. The turns at one end of the helically wound spring loosely contact the fixed post, while at the other end of the spring th... | 01/09/1996 |
| 5388672 | Anti-roll-back device A device (10) allows forward (clockwise) rotation of a shaft (12) but prevents reverse rotation unless disengaged. A loop (20) is attached at one end to a slide show (16), passes round a drum (14) on the shaft (12), around a first pin (24) and a second pi... | 02/14/1995 |
| 5325790 | Rollback-preventing apparatus for a rail vehicle Rollback-preventing apparatus for a rail vehicle for engaging a toothed rack securely joined to the rail track includes a detent pawl attached to the wheel of the rail vehicle. The detent pawl has a ratchet which is shaped for engagement in the toothed ra... | 07/05/1994 |
| 5285950 | Wire sprag retainer A low-cost sprag retainer is disclosed which is particularly useful in high volume applications. The retainer is formed of two generally linear wire portions which are spaced by a first distance. Cross members are placed across the linear members, spannin... | 02/15/1994 |
| 5211269 | Damper for a flapdoor using viscous fluid A damper for a flapdoor that does not show any damping effect when its movable shaft of the damper is rotated with the door in one sense whereas it effectively damps the rotary movement of the flapdoor when the movable shaft is rotated with the door in th... | 05/18/1993 |