Abstract: A torque transmission assembly including a hydrodynamic torque convener able to be coupled to a crankshaft on the one hand, and able to be coupled to a gearbox input shaft on the other, the torque converter including a primary element and a secondary element which are rotationally mobile about an axis of rotation, and damping means including a transmission member and a bearing element, the transmission member including an elastic leaf rotating as one with the primary element or with the secondary element, and the bearing element being home by the secondary element or by the primary element respectively, the elastic leaf being capable of flexing and of transmitting a rotational torque between the primary element and the secondary clement, the flexing of the elastic leaf being accompanied by a relative rotation between the primary and secondary elements.

Abstract: A torsion filtering mechanism (22) has a first rotating member (24), a second rotating member (26) movable with respect to the first rotating member (24), a cam track (60) rotating with one (24) of the rotating members, and at least one associated cam follower (36) carried by the other (26) rotating member. The cam track (60) has, in a section plane perpendicular to the axis of revolution, a profile constituted by a plurality of circular arcs (A0, A1, A2, A3, A4) adjacent pairwise and having an intersection point pairwise. Any two adjacent circular arcs from among the circular arcs have different finite or infinite radii of curvature, and indistinguishable tangents at the intersection point.

Abstract: A device for reducing an actuation force spike in an elevator car safety system. The device includes an elevator car mounted overspeed governor, a safety gear, a safety lever, and a force reducing mechanism. The force reducing mechanism is connected in a series relationship with the safety lever between the overspeed governor and the safety gear.

Abstract: An electric tool may include an electric motor, a spindle to which a working tool may be attached, and a torque transmission path provided between the electric motor and the spindle and including a first rotary member and a second rotary member. A torque transmission device may be provided between the first rotary member and the second rotary member and may include a plurality of resiliently deformable torque transmission members.

Abstract: An electric tool may include an electric motor, a spindle to which a working tool may be attached, and a torque transmission path provided between the electric motor and the spindle and including a first rotary member and a second rotary member. A torque transmission device may be provided between the first rotary member and the second rotary member and may include a plurality of resiliently deformable torque transmission members.

Abstract: A clutch device is described comprising a first clutch element, a second clutch element that is disposed in a coaxial manner in relation to the first clutch element, a first engagement means, a second engagement provided for engaging with the first engagement in a positively interlocking manner for transmitting a torque between the first clutch element and the second clutch element, and a spring biasing the first engagement element and the second engagement element in a circumferential direction against each other. The spring comprises a leg spring with a ring part and two legs, wherein the ring part is disposed in a substantially coaxial relation to the first and second clutch parts and the legs extend in a radially outward direction.

Abstract: A torsion damping mechanism for a rotary blower is provided that has improved durability and ease of installation into the rotary blower. A rotary blower including a torsion damping mechanism according to an embodiment of the present invention is also provided.

Abstract: A shock attenuating coupling device is provided for a rotary impact tool for drivingly connecting a hammer mechanism to a drive anvil. The shock attenuating coupling device includes a first coupling member, a second coupling member, a drum, a shoe, and a body of resilient material. The first coupling member has a first drive portion. The second coupling member has a second drive portion. The drum is provided proximate the first drive portion and the second drive portion and has a radially inner engagement surface. The shoe is provided within the drum and between the first drive portion and the second drive portion. The shoe has a radially outer surface capable of being expanded in a radially outer direction. The body of resilient material is interposed between the drum and the shoe.

Abstract: A sprocket assembly for an automotive timing chain system includes a main sprocket, an auxiliary sprocket mounted onto one side of the main sprocket for assisting the main sprocket, and an elastic member elastically coupling the auxiliary sprocket to the main sprocket for generating an elastic force between the main and auxiliary sprockets.

Abstract: An interruptible power transmission mechanism couples a drive source to a compressor. The power transmission mechanism has a pulley, which rotates in synchronism with the drive source, and a receiving member, which rotates in synchronism with the compressor. A limit spring couples the pulley and the receiving member such that they rotate together. When the load torque of the compressor exceeds a predetermined value, the diameter of the limit spring is decreased so that the limit spring engages a rib provided on the receiving member. Then, the deformation of the limit spring in the radial direction is locally restricted, causing stress at a specific portion of the limit spring to increase rapidly. As a result, the limit spring is reliably broken at a torque near the desired load torque, thus interrupting power in a desirable manner.

Abstract: The description refers to a torsionally flexible coupling with an outer rim (5) flexibly rotatable against a hub (1). To create favorable construction features, it is suggested to provide at least one ring-like compound body (2) between the hub (1) and the outer rim (5), consisting of at least one spiral layer (3) of an elastomer, with the threads of this spiral layer (3) being connected shear-resistant with a tensionally elastic and flexible intermediate layer (4), filling the spaces between the threads. The elasticity of tension and of shearing of this intermediate layer (4) are smaller than that of the elastomer layer (3).

Abstract: A power transmission mechanism having a pulley rotor and a release plate. The pulley rotor is coaxial with the release plate, and power from the pulley rotor is transmitted to the release plate to rotate the pulley rotor and the release plate in the same direction. A spiral spring is located between the pulley rotor and the release plate. The spiral spring is releasably engaged with the pulley rotor. A transmission surface is provided on the pulley rotor to oppose and engage a free end of the spiral spring. The transmission surface transfers power from the pulley rotor to the release plate, and relative rotation between the pulley rotor and the release plate is permitted due to deformation of the spiral spring. A release projection causes the free end of the spiral spring to move and separate from the transmission surface in accordance with relative rotation between the pulley rotor and the release plate when the load applied to the release plate exceeds a predetermined value.

Abstract: A torsion isolator (34) for transmitting torque and dampening torsionals in a driveline. The isolator includes a composite c-shaped spring (48) disposed in an annular chamber (44) of a housing (38,40) filled with torque converter fluid. The spring transmits driveline torque and attenuates torsionals. The spring also functions as a fluid displacement piston by dividing the chamber into radially inner and outer volumes (44a,44b) which vary inversely in volume in response to torque changes flexing the spring. Rapid flexing of the spring increases the fluid pressure in the decreasing volume and thereby dampens or reduces the rate of spring flexing or rebound.

Abstract: An improved apparatus for transmitting a rotational power from a pulley to a drive shaft of a compressor is disclosed. A coil spring is mounted on the drive shaft to absorb a load applied to the drive shaft when power is transmitted. The coil spring is arranged to be deformed upon generation of the load. A structure that transmits the power to the coil spring is securely attached to the pulley and coupled to the coil spring with a predetermined interference.

Abstract: A centrifuge rotor locking apparatus includes a C-shaped annular member for a snap-fit engagement about a drive hub. The member comprises first and second contacting segments and a third non-contacting segment. Centrifugation causes the contacting segments to flex outwardly and come into contact with the interior wall of the drive hole of a mounted rotor. The unbalanced mass distribution of the annular member causes the member to tend to slide off the drive hub. This further separates the contacting segments, thus increasing the locking effect of the annular member/drive hub assembly to the rotor as the member is wedged in place between rotor and drive hub.

Abstract: A torsion isolator (34) for transmitting torque and dampening torsionals in a driveline. The isolator includes a composite c-shaped spring (48) disposed in an annular chamber (44) of a housing (38,40) filled with torque converter fluid. The spring transmits driveline torque and attenuates torsionals. The spring also functions as a fluid displacement piston by dividing the chamber into radially inner and outer volumes (44a,44b) which vary inversely in volume in response to torque changes flexing the spring. Rapid flexing of the spring increases the fluid pressure in the decreasing volume and thereby dampens or reduces the rate of spring flexing or rebound.

Abstract: A mode change switch for a power tool, which switch is moveable between at least two positions corresponding to different operating modes of the tool in which different components of the tool are brought into a meshing engagement. The switch comprises a manually operable driving member moveable between at least two positions in each of which it is adapted to be realizably restrained and a driven member which is adapted to be driven by the driving member between associated positions to directly or indirectly facilitate a change in operating mode. A spring engages between the driving member and driven member, to urge the driven member to follow the movement of the driving member. The switch is arranged so that a first end of the spring abuts a first pair of stop members and a second end of the spring abuts a second pair of stop members. One of each pair of stop members is located on the driving member. And the other of each pair is located on the driven member.

Abstract: A torsion isolator (34) for transmitting torque and dampening torsionals in a driveline. The isolator includes a composite c-shaped spring (48) disposed in an annular chamber (44) of a housing (38,40) filled with torque converter fluid. The spring transmits driveline torque and attenuates torsionals. The spring also functions as a fluid displacement piston by dividing the chamber into radially inner and outer volumes (44a,44b) which vary inversely in volume in response to torque changes flexing the spring. Rapid flexing of the spring increases the fluid pressure in the decreasing volume and thereby dampens or reduces the rate of spring flexing or rebound.

Abstract: The invention relates to a coupling device on paint stirring machines.This device calls upon a driver (5) in the form of a sleeve (7) receiving, in its bore, and with slight clearance, a stirring rod shank, the said sleeve being equipped with at least one longitudinal slot (9) and with external lateral notches, the stirrer shank (3) including at least one transverse drill hole (15), and a clip-shaped element (17) including two elastic tabs pointing toward one another in order elastically to surround the said sleeve of the driver, each of the said tabs further including an internal projection respectively complementing each of the said notches, the clip element (17) being provided with a pin element or rod (25) capable of engaging in the said drill hole of the stirring rod.

Abstract: A torsional vibration damping mechanism (30) in a free standing clutch plate (26) for a vehicle driveline. The mechanism (30) includes composite C-shaped springs (41,42) for attenuating driveline torsionals and transmitting driveline torque, and a viscous damper (48) for controlling the rate of flexing of the springs. The mechanism also includes input and output drives (46,44) for flexing the springs only radially inward. The C-shaped composite springs are formed by removing a center portion of a minor arc of a closed ring comprising a plurality of layers of reinforcing filaments, or by cutting a composite cylinder into closed rings and removing the center portion. The composite springs include expanded end portions (41a,41b,42a,42b or 106b) to facilitate attachment of end brackets (72) to the springs without need of fasteners penetrating the composite.

Abstract: A valve timing control device includes a pair of clutches designed for restricting relative phase shift between an engine revolution synchronous rotary member and a camshaft. One of the pair of clutches restricts phase shift between the rotary member and the camshaft in valve timing advancing direction, and the other restricts relative phase shift between the rotary member and the camshaft in valve timing retarding direction. The pair of clutches are associated with a hydraulic means which is responsive to the engine driving condition and selectively make active one of the clutches.

Abstract: A tire lift/carrier unit has a sheet metal housing forming an enclosure and having parallel spaced walls supporting a rotatable shaft which supports a rotatable spool formed by a set of sheet metal plates. A flexible cable has one end connected to the spool and its opposite end connected to a tire support member, and the plates are spaced closely together to define a track slightly wider than the cable so that the cable wraps on itself in a spiral overlapping manner. A ring gear is mounted on the spool and surrounds an internal drive gear supported for orbital movement by an eccentric cam member rotably supported by the shaft. The cam member is rotated by the shaft through a spring biased slip clutch mounted on the shaft.

Abstract: An intake manifold (18) for an engine (10) includes a Roots-type supercharger (26) having a torsion damping mechanism (54) for reducing audible gear tooth rattle of timing gears (72,74) which prevent contact of meshed lobes (28c,29a) of the supercharger rotors (28,29). The damping mechanism includes a hard outer shell or band (102) for maintaining the shape of an annular member (100) formed of relatively soft elastomeric material which is fixed for rotation with the gear (74). The member (100) includes three arcuate slots (100c) each defining forward and reverse direction stops (100d,100e) for limiting movement of pins (96) slidably disposed at one end in the slots and fixed at the other end to the input shaft. A torsion spring (98) of low rate resiliently connects the pins to the annular member for reducing the audible gear tooth rattle. A set of three cantilever springs, molded integrally with the annular member, mitigate audible impacts of the reverse stops (100e) by the pins (96).

Abstract: An intake manifold (18) for an engine (10) includes a Roots-type supercharger (26) having a torsion damping mechanism (54) for reducing audible gear tooth rattle of timing gears (72,74) which prevent contact of meshed lobes (28c,29a) of the supercharger rotors (28,29). The damping mechanism includes a drive member (90), having an annular band portion (90d) for maintaining the shape of an annular member (98) formed of relatively soft elastomeric material which is fixed for rotation with the drive member via lugs (90e). The member (98) includes three arcuate slots (98d) each defining forward and reverse direction stops (98e,98f) for limiting movement of pins (94) slidably disposed at one end in the slots and fixed at the other end to the gear (74). A torsion spring (96) of low rate resiliently connects the annular member to the pins for reducing the audible gear tooth rattle.

Abstract: An intake manifold (18) for an engine (10) includes a Roots-type supercharger (26) having a torsion damping mechanism (54) for reducing audible gear tooth rattle of timing gears (72,74) which prevent contact of meshed lobes (28c,29a) of the supercharger rotors (28,29). The damping mechanism includes a drive member (90) having an annular band portion (90d) banded about an annular member (100) formed of relatively soft elastomeric material which is fixed for rotation with the drive member via lugs (90e). The member (100) includes three arcuate slots (100d) each defining forward and reverse direction stops (100e,100f) for limiting movement of pins (94) slidably disposed at one end in the slots and fixed at the other end to the gear (74). A torsion spring (96) of low rate resiliently connects the annular member to the pins for reducing the audible gear tooth rattle.

Abstract: An intake manifold (18) for an engine (10) includes a Roots-type supercharger (26) having a torsion damping mechanism (54) for reducing audible rattle of timing gears (72,74) which prevents contact of meshed lobes (28a,29a) of the supercharger rotors (28,29). The damping mechanism includes torsion springs (98,100) preloaded against each other. Torsion spring (98) has a low spring rate for attenuating torque fluctions or spikes during non-supercharging, low engine speed modes of operation. Spring (100) has a relatively high spring rate and functions as a shock absorber during engine shut down and during rough engine operation.

Abstract: A torsional sleeve coupling provides a spring system for dampening torsional vibrations in a driveline coupling during low torque modes of operation. In a preferred form, the coupling is adapted for use with a driving and a driven shaft which are coaxially aligned. The coupling includes a lost motion connection for torsionally coupling the driven and driving shaft ends for joint rotation. In a preferred embodiment, the coupling incorporates a sleeve which contains a C-spring having an annular metallic body positioned in coaxial registration with one of the shafts. The spring includes a pair of spaced, radially oriented ears. The sleeve and the shaft about which the spring is positioned each contain a slotted portion. The two slotted portions are in radial alignment with each other, and each is adapted to receive both of the ears of the spring.

Abstract: The end zones (11) of the C-springs (9) of the resilient device for the centering and coupling with backlash of first (1) and second (7) coaxial rotary components form lugs (12) extending radially inward in order to cooperate with stop surfaces (15) in the first rotary component (1), and external shoulders (19) in order to cooperate with facing shoulders (18) formed in the inside wall (16) of the second rotary component (7), the shoulders (18) being angularly offset from the stop surfaces (15) and substantially contiguous with the latter in projection onto the median plane (M) of the device in the centered position of the rotary components (1, 7).

Abstract: The illustrated embodiment which is in the form of a winch (or hoist) comprises a reel including a spool and embodying a portion thereof through which it may be driven for its raising and lowering functions. The reel mounts in bearing relation to a drive shaft between parallel relatively closely spaced side walls of its housing. This embodiment features an overload clutch including a drive plate mounted for rotation with said shaft within said housing. The drive plate nests within a shallow cup-shaped plate firmly and resiliently coupled by springs, parts of which have an interfit relation with portions of the bounding wall. Upon rotation of the shaft the nature and direction thereof is transmitted through the clutch and successive drive transmission elements to the portion of the reel provided for this purpose.

Abstract: A friction clutch driven plate comprises a hub with a small integral flange and an outer flange portion coupled to the hub through a lost motion connection associated with interengaging teeth. In addition to main torsional damping springing associated with springs in windows in the outer flange portion and side plates of a friction facing carrier, auxiliary circumferentially acting springing acts between the hub and the outer flange portion. The auxiliary springing comprises two springs, one to each side of the hub flange. The springs are circumferentially extending spring arms engaged in the hub and outer flange portion and together are much weaker than the main springs taken together and provide damping to prevent idle rattle while the main springs provide friction damping during transmission of torque through the driven plate.

Abstract: A friction clutch driven plate comprises an inner hub and a sleeve mounted on the inner hub for limited relative angular movement thereto by means of splines having clearance therebetween. Side plates secured to the hub are coupled through main torsion damping springs to a friction facing carrier having friction facings. The relative angular movement between hub and sleeve is controlled by two circumferentially extending springs which are arranged to be loaded in bending during this movement. To this end seats on the hub and on the sleeve engage against abutments on the springs. The springs are located in grooves of the hub and bear against end faces of the sleeve and so act as circlips to provide axial location between the hub and the sleeve.

Abstract: A door lock system for an automotive door, which includes a door lock driving device for mechanically locking or unlocking a door lock. The door lock can be, however, manually operated with a small force, because the door lock is operatively disconnected from an electric motor of the door lock driving device. The door lock driving device has a reversible electric motor, a sun gear fixed to an output shaft of the electric motor, a pair of swing levers rotatably supported by the output shaft, a planetary gear rotatably supported by the swing levers and engaged with the sun gear, and wave washers interposed between the swing levers and side surfaces of the planetary gear, so that when the electric motor is rotated, the planetary gear is rotated around the output shaft of the electric motor.

Abstract: A fuel supply assembly including carburetors with separate throttle shafts in general axially alignment, and a U-shaped coupling for flexibly connecting the carburetor throttle shafts. The coupling includes a bight connected to a pair of legs each having a free end including a U-shaped member having a pair of arms with apertures for receiving one of the carburetor throttle shafts, each of the U-shaped members also including an arcuate bight having arcuate side portions separated by a centrally located slot communicating with the arm apertures, and also including a nut and bolt arrangement extending through the U-shaped member transverse to the throttle shaft for squeezing the arcuate side portions to reduce the opening size of the slot and arm apertures, whereby the pair of arms in each of the U-shaped members engages a separate one of the carburetor throttle shafts so that the pair of carburetor throttle shafts are flexibly coupled for common rotation.

Abstract: The invention relates to a new and improved tire lift/carrier featuring a reel assembly comprised of a rotatable spool formed of thin metal plates abutted one to the other in a side by side relation, a portion of which plates defines a cavity in which one end of a line is held captive, the other end of which line is adapted to extend to releasably connect to a load which places a tension on this line in use. In the preferred embodiment described the spool has a single track within which the single line in connection with the spool is constrained to wrap directly on itself. The connection of the line to the spool is such that the spool may be rotated in either of opposite directions and in either case the line will wrap smoothly on itself. In the preferred embodiment illustrated the spool has a press fit gear through the medium of which it is driven in either of its opposite directions of rotation.

Abstract: A torsional damper comprises two parts mounted to rotate relative to one another against circumferentially acting elastic means disposed between them. These elastic means include at least one elastically deformable arm fastened at one end to one rotating part so as to rotate therewith. Its other end is unrestricted, and is formed with a shoulder whereby it can engage with a shoulder provided for this purpose on the other rotating part. The or each elastically deformable arm and its support are integral parts of an appropriately shaped flange. An application of the torsional damper is to friction clutches for automotive vehicles, for damping torsional vibration.

Abstract: A governor weight retainer assembly for a fuel pump in which a flexible connection is provided between the governor weight retainer and the hub on which the weight retainer is mounted. The flexible connection is a mechanical construction which has elongated spring elements supported on the hub as chordal elements, and roller elements are mounted on the weight retainer for limited travel in a circle on the chordal elements. The roller and chordal elements thus serve as cushion means between the retainer and hub.

Abstract: The illustrated embodiment which is in the form of a winch (or hoist) comprises a reel including a spool and embodying a portion thereof through which it may be driven for its raising and lowering functions. The reel mounts in bearing relation to a drive shaft between parallel relatively closely spaced side walls of its housing. This embodiment features an overload clutch including a drive plate mounted for rotation with said shaft within said housing. The drive plate nests within a shallow cup-shaped plate firmly and resiliently coupled by springs, parts of which have an interfit relation with portions of the bounding wall. Upon rotation of the shaft the nature and direction thereof is transmitted through the clutch and successive drive transmission elements to the portion of the reel provided for this purpose.