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| Number | Title | Issue Date |
| 8087503 | Driving mechanism and wheel assembly for toy car A driving mechanism for driving a wheel of a toy car includes a motor, a first clutch, a second clutch, a guide shaft, a spring, and a limiting element. The first clutch driven by the motor has an engaging end surface defining a center hole thereon. The second clutc... | 01/03/2012 |
| 8002098 | Torque responsive release clutch for a power nutrunner A torque responsive release clutch intended for a power nutrunner and comprises a driving clutch half (11) and a driven clutch half (10) coupled to each other for torque transfer by means of axially directed teeth (16, 17), wherein one of the cl... | 08/23/2011 |
| 7370561 | Electric driver A power screwdriver (10) includes a bit holder (14) bored to receive the shaft of a screwdriver bit (12) and adapted to securely hold the screwdriver bit (12) in place, and a housing (18) having a through cavity (16). The bi... | 05/13/2008 |
| 7334647 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 02/26/2008 |
| 7328637 | Apparatus for machining a cylinder bore surface and method of machining the cylinder bore surface using the apparatus An apparatus for machining a circumferential surface defining a cylindrical bore of a workpiece, the apparatus including a tool holder rotatable about a first rotation axis, and a form roller supported on the tool holder so as to be rotatable about a second rotation... | 02/12/2008 |
| 7216749 | Clutch for rotary power tool and rotary power tool incorporating such clutch An external surface of a spindle is formed with tapering grooves which become narrower in a direction towards the forward end of the spindle. A slider sleeve is provided with splines which also taper in a forward direction. In this way, the slider sleeve is prevente... | 05/15/2007 |
| 7101300 | Multispeed power tool transmission A portable power tool with a housing, a motor having a motor output member, a driven member and a transmission. The transmission, which is located in the housing, is configured to receive a rotary input from the motor output member and to produce a rotary output tha... | 09/05/2006 |
| 6984188 | Multispeed power tool transmission A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated ... | 01/10/2006 |
| 6979268 | Jaw clutch shock force damper system The jaw clutch damper system includes a damper which can be a disk spring which absorbs shock forces generated by rapid re-engagement of clutch plates of the clutch and dissipates energy of the shock forces in cooperation with the other components of the clutch, inc... | 12/27/2005 |
| 6941817 | Shaft delashing method and assembly with wireless interface A delashing assembly includes a tightening device for tightening a nut in relation to a main shaft supported on bearings and a wireless interface, wherein torque information is received by the tightening device over the wireless interface. A main shaft and main nut ... | 09/13/2005 |
| 6857983 | First stage clutch A clutch assembly for limiting a torque output of the power tool. The clutch assembly includes an annular rotatable clutch member, which is coupled to the ring gear of a planetary gearset in a transmission, and an engagement assembly. The clutch member has a clutch ... | 02/22/2005 |
| 6676557 | First stage clutch A clutch arrangement for a power tool having a multi-speed transmission. The clutch arrangement includes a clutch member and a follower member. The clutch member is coupled to a member of the transmission that is proximate the torsional input of the trans... | 01/13/2004 |
| 6629555 | Retractable screen door A retractable screen door for drawing a flexible screen panel across an opening, including a flexible screen wound around a spring biased take-up shaft, and guide rails for guiding the screen as it is moved across the opening. A unique latch mechanism is ... | 10/07/2003 |
| 6533093 | Torque adjusting device for a drill A torque adjusting device of an electric drill includes an annular member with notches in an end and grooves in an outer periphery thereof. A driving part connected to an output shaft is received in the annular member and operationally connected to the mo... | 03/18/2003 |
| 6523658 | Clutch mechanism for use in rotary tools having screw-driving and drill modes A clutch mechanism (17) includes an internal gear (10) and a plurality of cylindrical pins (26) pressed rearward against a front end surface of the internal gear (10) by a coil spring (25) via a flat washer (24). Provided on the internal gear's front end ... | 02/25/2003 |
| 6200220 | Flexible vane coupling A slip coupling comprised of a hub with extending flexible vane(s). The vane(s) extend from the hub at an acute angle which allows them to flex when coming in contact with a relatively rotatable friction cylinder. The friction between the vane(s) and the ... | 03/13/2001 |
| 6052931 | Torque limiting device for picturn signs A rotating sign assembly has a plurality of rotatable, multi-sided, sign segments, a torque transmitting member which is rotatable about a first axis of rotation, a mechanism for rotatably driving the torque transmitting member, and a torque limiter. The ... | 04/25/2000 |
| 5950774 | Load limiter A load limiter for preventing stall torque from being transmitted from a power drive unit to the flight control surfaces of an aircraft. The present invention provides such a load limiter in a package having lower weight and smaller spacial requirements t... | 09/14/1999 |
| 5746298 | Adjustable torque-limiting mini screwdriver A miniature, adjustable torque limiting screwdriver includes an elongated hollow handle internally threaded at one end. A torque-limiting mechanism is disposed within the handle and includes a rigid shaft having a hex inner end and a plurality of flexible... | 05/05/1998 |
| 5595251 | Displaceable gear torque controlled driver Methods and apparatus are provided for a torque driver including a displaceable gear to limit torque transfer to a fastener at a precisely controlled torque limit. A biasing assembly biases a first gear into engagement with a second gear for torque transf... | 01/21/1997 |
| 5351922 | Clamp The need for readjustment of clamps due to wear and tear is overcome by the provision of clamping means comprising a first member (16) movable relative to a housing (10) to effect clamping; torque limiting drive means (30,44) rotatable to effect that move... | 10/04/1994 |
| 5174424 | Arrangement in screw thread cutting apparatus The invention is an apparatus for producing clutching and de-clutching particularly adaptable for use in a tapping attachment for threading holes. The clutching apparatus includes clutching members driven by the driver or driving machine and clutching mem... | 12/29/1992 |
| 5169232 | Torque limiting device for driving members of a mixing center for paints and like products Driving member of the mixing centers are driven permanently by a transmission element for driving a coupling member with which a complementary coupling member of a stirring pot is brought in engagement. Each driving member comprises a pulley connected to ... | 12/08/1992 |
| 5135428 | Toy vehicle having automatic transmission An automatic transmission for a toy vehicle includes a pinion having a driving side and a driven side and being fixedly coupled to a shaft, a high speed gear coupled to the pinion through a first clutch, and a low speed gear coupled to the pinion through ... | 08/04/1992 |
| 5094330 | Power transmission mechanism with automatic clutch means A power transmission mechanism for a motorized hand tool, comprising a socket, a first spring set in said socket, a first rotary member inserted in said socket and stopped against said first spring, a revolving shaft inserted through said first rotary mem... | 03/10/1992 |
| 5025903 | Dual mode rotary power tool with adjustable output torque In an electrically powered combination screwdriver/drill opposing halves of a ratchet type torque tranmsitting clutch are normally biased axially apart by a compression spring. The output half of the clutch is fixed on the output spindle of the tool which... | 06/25/1991 |
| 4881421 | Drive with overload safety coupling A mechanical drive, especially a stepping drive which can be driven by a drive shaft (14) for the conversion of a rotary drive movement to an output rotary movement which follows a given law of movement and can be taken from an output shaft (16), is provi... | 11/21/1989 |
| 4875382 | Stepping drive An intermittent or stepping drive has a first rotatable member (20), which is driven by a driving shaft (12), in engaging relationship with a second rotatable member (30) from which a driven shaft (22) is driven whereby a continuous rotation of the first ... | 10/24/1989 |
| 4871296 | Decoupler shaft and air turbine starter having such a decoupler A torque limiting decoupler shaft transmits driving torque in a first sense without torque limiting action. However, torque applied to the shaft in a reverse sense opposite the driving torque results in an axial separating force between two portions of th... | 10/03/1989 |
| 4687082 | Torque-sensing clutch A torque-sensing clutch has two halves each connected to one of two shafts (1, 4) or the like. One of the clutch halves has substantially radially oriented projections (3) which consists of a rigid, wear-resistant material and are partly embedded in an el... | 08/18/1987 |
| 4655103 | Clutch for power screwdrivers A clutch for power screwdrivers. It has a transmission, an adjustable bit stop, and a drive shaft. It also has a cogwheel with cams on one face and a clutch disk with catches on one face mounted on the drive shaft. The object is a low-noise, wear-resistan... | 04/07/1987 |
| 4614462 | Rotation device for a foundation pile A rotation device for settling a pre-molded foundation pile into the earth by imparting axial loading thereto and by imparting torque of approximately equal magnitudes to both the upper- and lowermost portions of the foundation pile. A clutch assembly com... | 09/30/1986 |
| 4597480 | Positive engagement torque sensor A redundant drive having primary and secondary load paths may have a torque sensor to indicate a failure of the primary load path and make a drive connection for transmitting torque through the secondary load path. The positive engagement torque sensor has a p... | 07/01/1986 |
| 4428249 | Gear torque sensor apparatus In a processor of photosensitive material, a torque sensor actuates an alarm when a helical gear is subjected to torque in excess of a first predetermined value. The torque sensor includes a helical gear positioned on a shaft and biased against a stop. Th... | 01/31/1984 |
| 4427399 | Overload coupling or clutch An overload clutch or coupling includes a hub section connected to one drive element and a housing connected to another drive element. Plungers are fitted in sockets in the housing such that the shank portions of the plungers project from one side of the ... | 01/24/1984 |
| 4373924 | Torque limiting clutch A rotary transmission assembly for mounting on a shaft includes a slip clutch for limiting the torque which may be transmitted between a chain sprocket forming part of the transmission assembly and the shaft. The sprocket is rotatably mounted on a hub whi... | 02/15/1983 |
| 4368784 | Power screwdriver A power screwdriver has a drive motor and a tool holder arranged in a housing, a driving coupling including a driving coupling part driven by the motor and a driven coupling part, and a locking coupling arranged between the driving coupling and the tool h... | 01/18/1983 |
| 4273230 | Indexing drive disconnect A disconnect assembly releases a conveyor chain from a driven shaft. The connection between the driving shaft and the chain is by means of tapered pins associated with a driven plate or hub received in tapered holes on a plate attached to the driving shaf... | 06/16/1981 |
| 4185511 | Torque-transmitting, torque-sensing system A torque-transmitting, torque-sensing system has a first rotatable shaft which can be shifted radially in two orthogonally-displaced directions to be precisely concentric with a second rotatable shaft, has a first coupling element which is rotatable with ... | 01/29/1980 |
