William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8181763 | Window winder drive A window winder drive functions with a freewheeling coupling, which has an outer coupling part and an inner coupling part, which is concentric thereto, and comprises clamping bodies arranged between a clamping face of the outer coupling part and a clamping face of t... | 05/22/2012 |
| 8132658 | Seat having a position adjustment device Provided is a seat where pumping operation of a lever of the seat not only rotates an output member by inching but also, when a load in the operation direction of the lever is applied to the output side member, rotates it at one stroke in that direction. A seat adju... | 03/13/2012 |
| 7987960 | Torque arm assembly for a backstopping clutch Various torque arm assemblies for a backstopping clutch are provided that enable load sharing among multiple torque arm assemblies, controlled release of load on the torque arm assembly and/or load sensing. The torque arm assembly includes a head member that is conn... | 08/02/2011 |
| 7832542 | Reverse input prevent clutch bearing assembly A reverse input prevention clutch bearing assembly comprises a first rotational member and a second rotational member which are arranged on a coaxial line and has orbit surfaces with different radii and a plurality of rolling members between the two orbit surfaces. ... | 11/16/2010 |
| 7686150 | Governor device for door This invention disclosed a speed limit device for door, which comprises: an input shaft with one end driven by a door motor, and having the first gear and the second gear configured at the other end simultaneously driving a hollow shaft and a third shaft, and the ce... | 03/30/2010 |
| 7673731 | Two-way clutch A two-way clutch has a rotational driving unit, a rotational driven unit, a roller interposed between the rotational driven unit and a collar, which is a fixed member and is not rotatable. A recess is formed in an inner peripheral surface of the collar, so that the ... | 03/09/2010 |
| 7607526 | Anti-reverse input clutch An anti-reverse input clutch is provided which includes an output member including an output shaft held so as to be rotatable about the axis of an input member, and a cam member which is a separate member from the output shaft and on which cam surfaces are formed. T... | 10/27/2009 |
| 7530439 | Drive device, sheet conveying device, and image forming apparatus including drive force transmitting unit including reverse preventing mechanism for preventing shaft from being reversed A drive device includes a first shaft, a second shaft disposed at a position deviated from a shaft line of the first shaft, a drive source that drives the first shaft to rotate, and a drive force transmitting unit connecting the first shaft to the second shaft via t... | 05/12/2009 |
| 7429271 | Clamping freewheel and its use for a prosthetic part In a clamping freewheel having a sleeve (5) which encloses a shaft (7, 9) and in which the shaft (7, 9) is mounted in an axially displaceable manner, having rolling elements (6) which are arranged in chambers, formed between shaft (7, ... | 09/30/2008 |
| 7395874 | Slaving and blocking device A slaving and blocking device for transmitting a torque from a driving part to a driven part and for stopping the driven part at a torque engaging the driven part has a slaving unit fixable on the driving part fixed against relative rotation and having slaving claws... | 07/08/2008 |
| 7367891 | Techniques for controlling transfer of torque using detent members responsive to radial force A torque limiting device includes a base configured to reside in a fixed position relative to a drive unit, an input shaft assembly configured to receive a torque load from the drive unit, and an output shaft assembly which is capable of rotating about an axis. The ... | 05/06/2008 |
| 7353930 | Bi-directional friction clutch or brake assembly for transmissions A clutch assembly 10 for use in a housing 26 has a race surface 32 and includes a shaft 13; an output structure 11; a cam 16; and a clutch plate 18. Follower structure 28 is associated with the cam. An input st... | 04/08/2008 |
| 7325291 | Method for assembling a clutch system A method for assembling a clutch system on a drivetrain is proposed in which the clutch system is mounted on the transmission and in which the transmission is then connected to the engine block. ... | 02/05/2008 |
| 7311190 | Motor clutch for window regulator motor A clutch assembly for a window regulator motor includes a gear housing with a helical gear disposed in the gear housing. The helical gear includes first and second circumferential surfaces. An opposing pair of slots is formed through the first circumferential surfac... | 12/25/2007 |
| 7293837 | Fitting for a vehicle seat In a fitting (1) for a vehicle seat, in particular for a motor vehicle seat, having a first fitting part (11) and a second fitting part (12) that is mounted on the first fitting part (11) and that can be rotated relative to the latter aro... | 11/13/2007 |
| 7254868 | winding and anti-drop assembly for door counterbalance system A counterbalance system (25) for a door (D) movable between a closed position and an open position having an axle (20), a cable drum (15) attached to the axle, a winding shaft (35) interconnected with the axle by a counterbalance spring (... | 08/14/2007 |
| 7225910 | Free-wheeling hub device A freewheel hub device includes two locking rings with axial grooves formed in the locking rings and being essentially V shaped in cross-section. The groove walls of one locking ring form a first and a second wedge surface, and one groove wall of the other locking r... | 06/05/2007 |
| 7213693 | Rotational transfer mechanism A rotational transfer mechanism includes a rotary output shaft, a rotary input shaft positioned inside the rotary output shaft; a circumferentially-uneven-width-space forming portion having a cam surface, to form an accommodation space between the rotary input shaft... | 05/08/2007 |
| 7163097 | Bi-directional friction clutch assembly for electric motors to prevent backdrive A clutch assembly 100 is provided for a motor having an armature shaft and a worm shaft having a worm constructed and arranged to engage a gear. The clutch assembly includes a clutch housing 112 including a race surface 132; a cam 117 cou... | 01/16/2007 |
| 7156009 | Die device When a retainer collar 77 is rotated with respect to a punch guide 29 in a turnable manner, an upper punch driver 49 which pierces the retainer collar 77 so as to be movable up and down is rotated with respect to the punch guide 29... | 01/02/2007 |
| 7134509 | Portable power tool with rotating output shaft and overload protection A portable power tool is provided which includes a rotation motor (11), an output shaft (14), a gearing (13) and a drive spindle (12; 112) connecting the gearing (13) to the motor (11). A drive line arresting lock device ( | 11/14/2006 |
| 7117710 | Reverse input blocking clutch and clutch device using the same A reverse input blocking clutch comprises, as main elements, an input member, an output member, a stationary member for constraining the revolutions, locking means, lock release means and torque transmission means. By forming the input member, the output member, the... | 10/10/2006 |
| 7080578 | Hand tool with impact drive and speed reducing mechanism A power driven tool useful for tightening and loosening a mechanical fastener includes an impact mechanism. Preferably, the tool is pneumatic and includes a ratchet head and an impact device for providing additional torque to the ratchet head. A planetary reduction ... | 07/25/2006 |
| 7073606 | Manual machine tool The invention is based on a power tool comprising toolholder (12, 102) driveable in at least rotary fashion via a drive motor and via a driven shaft (10, 98, 100), which comprises a workholding fixture (14) for attaching tools (16, 104) a... | 07/11/2006 |
| 7063201 | Power tool and spindle lock system A power tool and spindle lock. The spindle lock includes a spring and a detent arrangement to control and buffer the rotation of the spindle and to delay the engagement of the locking elements. In some aspects, the invention provides a spindle lock including a sprin... | 06/20/2006 |
| 7052430 | Transmission with friction launch mechanism A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mech... | 05/30/2006 |
| 7048107 | Driving device A shaft locking device for a motor-driven, hand-guided work tool spindle has a driven member fixedly connected thereto, a freewheel with locking members, a ring fixedly connected to the housing and engaged by the locking members in both rotating directions, a drive ... | 05/23/2006 |
| 7032731 | Seat cushion pumping device for vehicle Disclosed herein is a seat cushion pumping device for a vehicle adapted to adjust a height of a seat cushion. The seat cushion pumping device comprises a clutch unit adapted to transmit a rotating force to gears of a conventional link member for adjusting the height... | 04/25/2006 |
| 7017723 | Electromagnetic clutch and rotation transmission device The magnetic attraction force of an electromagnetic coil in an electromagnetic clutch is increased in a limited installation space, thereby improving reliability of operation. The dimensions of a field core housing the electromagnetic coil and a rotor are optimized ... | 03/28/2006 |
| 7000935 | Tricycle and guide handle A tricycle includes a mainframe with front and rear sections. The front section may include a steering assembly with a rotatable wheel. The rear section may provide support for two spaced wheels and may be configured to provide a substantially unencumbered open area... | 02/21/2006 |
| 6994199 | Load torque blocking device The invention concerns a load torque lock for automatically locking load-side torques in the case of a decrease or cessation of a drive-side torque having a housing (11) fixed to a frame, a locking ring (17) permanently connected to it and a locking bo... | 02/07/2006 |
| 6994195 | Clutch release mechanism A clutch mechanism connects a rotating shaft to an outer clutch member having a clutch keyway. The clutch mechanism permits the shaft to rotate in a normal direction and prevents the shaft from rotating in a reverse direction when the outer clutch member is rotation... | 02/07/2006 |
| 6973952 | Anti-reverse transmission apparatus and window blind using the same An anti-reverse transmission for use in a window blind includes a fixed axle, a rotatable input shaft, an output shaft sleeved onto the fixed axle, a transmission shaft sleeved onto the output shaft and coupled to a linking rod of a window blind, the transmission sh... | 12/13/2005 |
| 6974011 | Directional clutch A bi-directional clutch permits the unidirectional transfer of torque between inner and outer races in either direction of rotation, depending on how the clutch is set. The outer race has a cylindrical raceway presented inwardly toward the inner race, whereas the in... | 12/13/2005 |
| 6971719 | Clutch actuator surface apparatus and method A clutch actuator has a housing with a load bearing element disposed within it. A force application element disposed within the housing applies force to the load bearing element. A stop assembly includes a retaining stopper between the load bearing element and the f... | 12/06/2005 |
| 6957596 | Apparatus and method for braking ergonomic support actuator A braking actuator for an ergonomic support is connected thereto by a Bowden cable. The actuator has a housing with pin slots, friction surfaces and a mount for a disk axle. A disk has frictional surfaces, holes with pin load edges, a Bowden cable wire seat that hol... | 10/25/2005 |
| 6955252 | Device for isolating torque fluctuations The present invention relates to a device for isolating torque fluctuations of a rotary drive shaft. The device comprises a first member (2) for connection to the drive shaft, a second member (3) for connection to a driven member and an intermediate me... | 10/18/2005 |
| 6955251 | Clutch unit A clutch unit comprises an outer ring 1 as an input-side member, an output shaft 2 as an output-side member, an inner ring 3 as a control member, an outer ring 4 as a stationary-side member, a first clutch part 5 interposed between... | 10/18/2005 |
| 6951270 | Silent ratchet actuator An actuator for a traction device comprising has a locking clutch adapted for operative communication with a traction device. It has a drive disc having drive tabs. The drive tabs project axially into driving engagement with the locking clutch. The drive disc has a ... | 10/04/2005 |
| 6945600 | Apparatus and method for double clutch actuator An ergonomic device actuation method for a housing, a pulley rotating inside the housing, the pulley being adapted to draw a traction element, and a locking clutch encapsulated by the housing and disposed to control rotation of said pulley. A drive clutch drives the... | 09/20/2005 |