Abstract: A rotary torque transmission apparatus for a 4-wheel drive vehicle in which a rotary torque of a worm wheel of 4-wheel drive vehicle provided with a reciprocably movable fork shaft, to which a shaft fork for moving a 2-4 wheel change over slider to and fro is fixed, is transmitted to an output shaft via a torsion spring, wherein the worm wheel driven by a motor is disposed on an output shaft supported by a casing so as to be rotatable relative to the output shaft; and a pair of rotary plates so arranged as to be rotatable together with the worm wheel is disposed inside the torsion spring arranged between a pair of fixed plates fixed to the output shaft in such a way that each end of the torsion spring is retained between one rotary plate and one fixed plate disposed on the opposing side to each other, respectively.

Abstract: The rectilinear jack comprises a cage defining an inner chamber at an upper portion while a lower portion of the cage is thinned out in order to form an end lug with a hole for fixation of the cage. The upper portion of the cage is substantially of a lozenge shape for enclosing a cam with two noses placed substantially at 120.degree. with respect to each other. The cam displaces two substantially V-shaped parts bearing on inclined inner walls of the inner chamber while an open lower portion thereof contains trains of rollers kept in engagement with the above parts by a spring. The trains of rollers bear on an upper portion of a jack stem having at least one connection head.

Abstract: A drive mechanism for raising and lowering the placement head of an electrical component assembly machine, the mechanism having a servo motor driving a lead nut engaging a lead screw which carries the placement head. The servo motor, in response to the machine control, rotates the lead nut to lower the placement head the desired distance from the board for proper placement in the board. A pair of rollers contact upper flat surfaces on the lead screw to prevent axial rotation of the lead screw.

Abstract: A pinion shaft starter for internal combustion engines having its pinion coupled to the shaft of the starter motor through an overruning clutch is disclosed in which a dividing wall member is mounted to define in the starter housing a first chamber located on the side of the pinion and a second chamber on the side of the starter motor, with a dust discharging vent formed in the first chamber, at a circumferential point externally of the wall member. The wall member is provided to encircle the external circumference of the overrunning clutch regardless of the position of the clutch which is axially moved by the solenoid switch to bring the pinion into or out of engagement with the ring gear on the flywheel through an opening formed in the starter housing. To insure sealing between the outside clutch circumference and wall member, an annular ring is provided along the inside periphery of the wall member.

Abstract: A speed change device that includes an annular ring journaled on the periphery of a swash plate having a plurality of equally spaced radially extending frusto-conical rollers on the periphery thereof adapted to intermittently engage a selectively shaped fixed race and a selectively shaped movable race at low pressure angles with attendant low normal forces.

Abstract: Reset mechanism comprises a base, a spring arm rotatable about an axis through the base, and an extension spring fixed to the base at one end and the spring arm at the other end. The spring passes around two ball bearings on studs on the base to permit use of a long spring in a small space without binding. The spring arm is limited to rotation between first and second angular positions, the angle between the spring and the spring arm becoming more acute as the arm is rotated from the first position to the second position. The torque required to hold the arm at the second position is considerably less than the torque required to initiate rotation from the first position.

Abstract: A transmission apparatus having an annular casing formed integrally, in its inner face, with a plurality of wave-shaped inner teeth, a plurality of drive roll elements rolling along the toothed inner face of the annular casing, a carrier for swingably supporting the drive roll elements by means of associated connecting element, and a wave generator for cyclically urging the drive roll elements to radially displace while rolling along the toothed inner face, thereby urging the carrier element to exert thereon a drive force.

Abstract: A mechanical mechanism is incorporated with two slotted discs -27- and -25- with two levers -14- and -16- which are inserted in the slots separating discs -27- and -25- to the length of the tips of levers -14- and -16-. Shifting the levers through the movement of activating shaft -2- which in turn moves impeller -7- creating, under the power of the coaster sprocket drive, a variation of speeds, though applied pressure. Stationary disc -27- being integrated with the bicycle retaining cylinder and floating disc -25- being free of the retaining cylinder will now be compelled only by the revolution of speed transmitted by the coaster sprocket drive. the structure and components of this invention are totally enclosed, minimizing difficulties in operation as one may shift into different speeds without flaws.

Abstract: A selector shaft return guide for a multiple speed automotive transmission includes a selector shaft for selecting the gear shift channel; a lever member rotatably fixed to the selector shaft; a holding member axially displaceable relative to the selector shaft and fixed rotatably to the casing; and a spring that forces the holding member against the lever. The lever member is formed with two tracks, offset angularly and having a depth that varies in a peripheral direction. Balls located in the tracks between the holding member and the lever member travel within the groove against the force produced by the spring that urges the selector shaft to return to the neutral position.

Abstract: A spring drive device in which a spring holder, a rotor and an output gear are all loosely mounted on a shaft. The spring holder is prevented from rotating and holds one end of a coil spring, the other end of which is held by the output gear. The rotor rotates together with the output gear but is limited in the angle through which it can rotate. The coil spring can be wound and thereafter provide motive power to the output gear.

Abstract: An assembly for protecting a circuit breaker drawout mechanism from damage which may be caused if excessive torque is applied to operate the mechanism. The invention relates to drawout circuit breakers of the type utilizing a worm gear assembly (34, 36) to operate a driven shaft (12) to move the circuit breaker into and out of an electrical compartment. A two-part driver shaft assembly (38) is used which includes a head (50) and a driver shaft (62). The head has a collar portion (52) which includes a ridge (54) and the driver shaft is provided with a channel (68) adapted to receive the ridge. A shoulder screw (60) connects the head to the driver shaft while a coil spring (66) encircling the screw biases the head against the driver shaft, retaining the ridge within the channel unless an excessive amount of torque is applied to the head causing the ridge to slip from the channel and preventing additional torque from being imparted to the worm.

Abstract: A spring-loaded brake may be modulated by an integrated brake-actuating cylinder of almost unchanged constructional length, arranged radially above a spring-packet which acts in a direction contrary to the lifting force of the cylinder. The brake still has the automatic emergency stopping function of the parking brake principle. The spring packet acts against a brake piston which is acted upon by pressure at both ends by cylinders which are equipped with gaskets for sealing them both against each other and against the transmission housing. The brake discs and splash lubrication of the transmission are in communication via oil passage sections. The brake housing is designed as an assembly built into the transmission and its cover flange may be equipped with a shaft seal for fitting a shaft extension to a drive shaft. The brake hub body can be shaped as a shaft flange which brake hub body can also be the hub of a gear wheel.

Abstract: An anti-friction worm-worm gear type speed reducer torque converter is disclosed. The speed reducer has a rotatably mounted worm gear adapted to mesh with a rotatably mounted worm incorporating a plurality of circulating rolling elements. In one embodiment, the configuration of the spiral thread of the worm is such that the balls incorporated in the load carrying side face of the spiral thread provide a substantially continuous substantially spiral shaped contact line with the load transmitting tooth of the worm gear. This is accomplished by providing the helicoid spiral thread of the worm with a flat, approximately bell shaped profile in the radial direction, with reference to the longitudinal axis of the worm, and by gradually modifying the trapezoidal dimensions of the spiral thread in axial cross-section.

Abstract: A drive mechanism comprises a support upon which a drive member is mounted for movement relative to a frame. The drive member comprises first and second elements which are relatively movable, the one of which may be mounted on the other. The elements are interconnected by a resilient member which transmits the drive therethrough, a drive input being coupled to a one element, a drive output to the other element. A detector generates a signal output responsive to relative movement of the elements which may serve to control a drive transmitted through the mechanism. In a preferred embodiment, the support is a rotatable screwed shaft and the first element a traveller thereon upon which the second element is slidably mounted, the elements being interconnected by helical springs.

Abstract: An improved rolling element jackscrew includes at least three planetary rollers interposed between an inner shaft and an outer nut, wherein one of the shaft and nut is formed with grooved threads of zero pitch and the other bears a spiral or pitched thread having a different number of threads per unit length. The different thread numbers on the nut and shaft are chosen to provide a pattern of nodal points at which the thread crests intersect, with the nodal points arranged along a plurality of equiangularly spaced axial contact lines corresponding with the number of rollers and defining positions of roller installation. The rollers each include axially spaced pairs of enlarged ribs defining axially spaced grooves meshing between the shaft and nut at the respective nodal points.

Abstract: A gear drive apparatus is provided which includes a rotatable drive shaft, a driving member, a driven member and a pinion gear. The rotatable drive shaft contains a handle and a stem. The driving member is integrally connected to the stem and rotates with the stem in response to the rotation of the handle. The driven member is coaxially positioned about the stem and engages the driving member. At least one radial aperture and radial groove are coaxially formed on the driven member and rotated about the stem. A pinion gear is rotatably mounted on the stem and includes at least one radial boss and pinion teeth, which extend from the pinion gear. The radial boss is positioned within the radial groove and a portion of one of the pinion teeth is fitted within the radial aper.

Abstract: There is disclosed a continuously variable ratio power transmission means comprising truncated cones having concave parabolic circumferential surfaces which surfaces are in rolling contact one with another and which can be moved in a linear fashion to provide a variable ratio dependent on point extent of overlap and rolling contact. In a preferred form of the invention positive drive is provided by a rack or band of gear teeth being provided in a helix around the periphery of each cone in a constant helix or lead angle.

Abstract: A control system for a belt-drive infinitely variable transmission. The transmission is connected to a crankshaft of an engine through an electromagnetic clutch. The control system is provided with an engine speed signal producing circuit, a vehicle speed producing circuit and an arithmetic circuit for controlling the clutch current flowing through the coil of the clutch in dependency on the engine speed signal and vehicle speed signal. The arithmetic circuit is so arranged as to cut off the clutch current when the engine speed decreases to a predetermined value which is slightly higher than an engine speed at which the engine stalls during shiftdown operation of the transmission.

Abstract: A gear-shift mechanism for a transmission unit which includes a fork shaft slidably supported in a housing assembly which is selectively shifted from its neutral position to forward and reverse positions, a detent mechanism for selectively retaining the fork shaft in its neutral and shifted positions, a shift head member slidable on the fork shaft, a one-way engagement mechanism for effecting the engagement between the shift head member and the fork shaft during axial displacement of the fork shaft toward and away from its reverse position, and a shift arm member pivotably mounted to the inner wall structure of the housing assembly and linked with the shift head member to retain an idler gear in its neutral position and engage the same with driving and driven gears. The detent mechanism includes a first holder member having a slot in its upper portion and a shaft fixed to the upper side portion of the first holder member and a second holder member fitted into the first holder member.

Abstract: A shift lever is composed of a lower lever section connected to a control rod of a transmission, and an upper lever section formed with a hollow cylindrical portion and provided with a shift lever knob. The lower lever section is formed with an elongate end portion which is being inserted in the hollow cylindrical portion of the upper lever section. Additionally, lower and upper elastomeric insulators spaced from each other are securely mounted on the elongate end portion of the lower lever section. The lower elastomeric insulator is securely connected to the upper lever section cylindrical portion, while the upper elastomeric insulator is adapted to form a clearance between it and the upper lever section cylindrical portion, thereby avoiding contact between the upper elastomeric insulator and the upper lever section cylindrical portion upon the shift lever being not operated.