Abstract: A clutch disengagement device having an antifriction bearing connected for radial movement on a sliding sleeve by a centering ring. The centering ring, which is fastened to the nonrotating bearing race, is fastened to the sliding sleeve by at least one clamp which surrounds a radial flange of the sliding sleeve, or of the centering ring, with radial play.

Abstract: A resettable release device to replace a shear pin connection between two members comprises a drive ball yieldably held in a seating in one of the members by a plunger slidable in a housing in the other member. The drive ball is located in a bore in the housing. The plunger has an annular shoulder against which a crowded ring of detent balls is held by two ball control rings resiliently urged towards each other. On overload, the drive ball moves out of its seating by pushing the detent balls up over the shoulder, forcing ball control rings apart. Pushing the plunger back to its original position resets the device.

Abstract: An elastic friction overload coupling having two coupling halves and friction bodies arranged therebetween, wherein both coupling halves are pressed against one another with spring force for transmitting a rotational moment, and wherein at the one coupling half there is fixedly mounted against rotation a ring-shaped element and biased in axial direction by spring force against the aforementioned one coupling half. Components of the second coupling half are arranged between the first coupling half and its ring-shaped element. According to the invention there are provided screws in order to detach the ring-shaped element from the first coupling half, so as to be able to exchange segment-shaped friction bodies or sectors of the first and/or second coupling halves, without having to displace the latter upon their shafts or to dismantle the same, and that the screws are arranged at the region of the outer periphery of the coupling and carry the springs as entrainment means for the ring-shaped element.

Abstract: An energy absorbing coupling for use with an electric motor-driven window regulator mechanism, including a torsion spring arrangement between an input gear and an output pinion which provides (1) a driving connection in either direction, and (2) a relative movement or lost-motion connection for absorbing the energy generated by the inertia of the electric motor armature when the window reaches its limit of movement in one direction of the other.

Abstract: A rotating fluid shear friction coupling with at least one shear friction gap formed by a wall rotating along with the input side and by a wall rotating along with the output side, and with two spaces in communication with the working gap, one on the inlet side and one on the outlet side; the radially outermost passage of the inlet side space into the working gap has radially a larger spacing from the center of rotation than the radially outermost passage from the outlet side space whereby the two spaces are separated from one another by a wall provided with controllable passages; the working gap is also provided with means, for example, in the form of a helical feed groove for the continuous automatic feed of the working medium through the working gap in the direction toward the space on the outlet side; the space on the outlet side has thereby a space portion which is delimited radially outwardly by walls that preferably rotate with one another as a unit, and is disposed radially outwardly of the radius of

Abstract: A device for starting one of a plurality of airplane engines with a starter by way of hydrodynamic transmission elements or a hydrodynamic torque converter having arranged in parallel therewith an overriding clutch that is connected to each engine. The engines are adapted to be coupled to each other by means of transmission gearing and coupling means arranged behind the hydrodynamic transmission elements when viewed from the engine side. The hydrodynamic transmission elements are adapted by variation of the filling to be controlled in such a way that the power intake beyond a predetermined speed will increase at a lower rate.

Abstract: Herein disclosed is a flexible gear type coupling for connecting a pair of substantially coaxially aligned shafts to transmit torque therebetween. The flexible coupling comprises a hub having external gear teeth surrounding an outer portion thereof and rotatably connected to one of the shafts. A sleeve surrounds the hub and has internal gear teeth surrounding an inner portion thereof and in meshing engagement with the external gear teeth of the hub. A shear spacer is connected between the sleeve and the other of the shafts for transmitting torque from the one shaft to the other shaft. The shear spacer is adapted to shear when excessive torque is applied thereto for protecting the coupling from being damaged from the excessive torque. A capturing device is interposed between the hub and the sleeve for maintaining the sleeve substantially concentric about the hub upon shearing of the shear spacer.

Abstract: A mechanism for the precisional turning of a threaded shaft or leadscrew wherein the turning of a hand knob is used to precisionally regulate the amount of turning of the shaft. By the hand turning of a drive knob, a pair of ring drive keys are made to move along the upper surface of a cam unit having two lobes and two recesses. A castellated counter ring, which is placed around the cam unit has equally spaced cogs which normally will not be engaged by the ring drive keys. However, when the ring drive keys fall into the recesses of the cam surface, they engage against two cogs on the counter ring causing them to shift a fixed amount, after which the rise of the lobe of the cam raises the ring drive keys out of engagement with the cogs of the counter ring. The effect of this is to turn the shaft, for example, 1/10 of a shaft revolution.

Abstract: This invention relates to a disconnect coupling for drivingly connecting separate parts of a drive shaft, and finds particular application in helicopter tail rotor drive shafts. The coupling comprises components fixed respectively to the shaft parts and being separable in a generally axial direction to enable the drive shaft parts to be disconnected, and includes retaining means automatically operative to prevent axial separation of the separable components during rotation. In one embodiment a cylindrical drive member is coupled to one drive shaft part and includes adjacent one end a radially inwardly extending flange having a central aperture for co-operation with a retaining member secured on the other drive shaft part, the retaining member being arranged to protrude through the aperture when the coupling components are drivingly connected.

Abstract: A mechanical shaft-coupling device fitted with at least one steel ball, inserted at the coupling part of driving and driven shafts, engages with both the driving and driven shafts under normal load to transmit normal torque but, shifts its position to cut the transmission with the driven shaft in over-loaded condition so that the driving shaft idles and no over-torque works on the driven shaft.

Abstract: The present invention relates to a viscous shear coupling (e.g. for use as a fan drive comprising an annular driving member, usually in the form of a disc having a hub portion for mounting on a driving shaft, a driven member having an internal annular chamber receiving said annular driving member, with facial planar and circumferential surfaces of said chamber and opposing facial planar and circumferential surfaces of said driving member at least in part being in close-spaced relationship, said driven member being axially and radially located for rotation relative to said driving member, viscous coupling fluid in said chamber, and a 0.0005 to 0.0015 inch thick layer of non-metallic anti-friction material on at least those parts of said facial planar and circumferential surfaces of said annular chamber which are in close spaced relationship, thereby forming journal and thrust bearing means for the relative rotation of the driving member and the driven member.

Abstract: Flexible coupling which can rotate in both directions, comprising two coupling parts connected to each other by torque transmitting simultaneously loaded resilient rolling elements which are mounted in pockets, each of which is defined by two adjacent cavities in said two coupling parts.

Abstract: Concentric driving and driven clutch rings have teeth in a common radial plane on one end of the rings. The clutch rings are normally coupled together by a coupler ring having teeth engaging the teeth of both clutch rings, this engagement being maintained by an axial clamp bolt. In the event of dangerous overspeed the clamp bolt is broken and the coupler ring is disengaged from the clutch rings by an explosive charge acting on an axial piston. The explosive charge is detonated by a firing pin actuated by a steel ball impelled by centrifugal force. The ball is retained by a magnet until centrifugal force exceeds the magnetic force holding the ball.

Abstract: The joint allows high operational speeds and large operating angles while remaining homokinetic.The joint comprises a bell integral with the driving shaft and defining raceways for rollers carried by trunnions. Two sets of rollers and trunnions are provided and associated respectively with two concentric shaft sections which are connected to the driven shaft and are capable of undergoing elastic torsional deformation so as to take up the phase difference between the two sets of rollers and trunnions.

Abstract: An overload control coupling between two rotating machine elements, particularly the driving part and the driven part of a coaxial shaft mechanism with at least two essentially semi-cylindrical extensions radially arranged at the interface of the coupled machine elements and uniformly distributed over the circumference, the extensions each comprising portions from the coupled machine elements, which portions form cylinders having a separation plane or interface parallel with the rotation plane of the machine elements, the extensions being embraced by annular power-transmitting carrier links connecting the machine elements. In the case of overload, the machine elements may separate and disrupt the connection by the breaking of the carrier links at predetermined excessive stress levels.

Abstract: Accuracy and reproducibility of tuning with a low-cost mechanism in minimum space is achieved by a pair of flat, tapered-notch coupling members each being spring biased into firm engagement with the driving member at the opposite extremities thereof and with pins in guide slits of a driven member at the opposite extremities thereof, the slits preventing undesired displacement of the driving member at right angles to its intended motion and the combination of tapered slots and spring biasing preventing inaccurate displacement of the driving and driven members in the direction of intended motion thereof.

Abstract: A torque-limiting coupling having two co-axial rotary members interconnected by one or more shear pins extending between two fixing blocks detachably secured one to each of the two rotary members. Each shear pin is firmly secured in bores in the two blocks, and each block is firmly secured by two screws onto a chordal flat on the periphery of each rotary member, so that, in the event of a pin being sheared, the blocks with the broken pin can be removed radially and then replaced with another pin. In a coupling having two or more pins the shear load is distributed equally between the pins. Each pin may be bonded in the bores in the fixing blocks. Alternatively, each pin may be a loose fit in the bores and the block dimensioned so that when it is screwed firmly onto its chordal flat the block is flexed or deformed so as to reduce the diameter of the bore and thereby clamp the shear pin firmly in the bore.

Abstract: A coupling for a tubularly shaped flexible shaft element, the coupling having a generally cup shape with a sleeve for receiving the flexible shaft element and an integral bottom portion with circumferentially spaced apertures disposed near the integral sleeve.

Abstract: An in-line coupling(s) which resists axial compression thrusts and axial tension loading or axial misalignment. Two outer rotary members are connected to a central rotary member by at least one pair of parallel links each, the links being rotatable about shafts mounted on the respective rotary members. The central rotary member has an opening extending therethrough adapted to receive an axially incompressible assembly passing therethrough. The assembly may include end portions pivotally mounted about shafts secured to the outer rotary members, and the length of the assembly may be adjusted for adapting the assembly to differently dimensioned rotary members and couplings. The assembly may alternatively include means for resisting axial misalignment of the rotary members.

Abstract: A continuously variable UHF tuner arrangement is provided wherein a single channel selector shaft is provided with a detent position for each of the seventy UHF television stations and a highly accurate detent mechanism is employed to return the channel selector shaft to any one of said detent positions with extreme accuracy. As a result, the tuning elements of the UHF tuner may be accurately aligned to different UHF stations corresponding to said detent positions and a nonambiguous digital dial arrangement is employed to indicate to the operator exactly which UHF station is being received. A masking member concentric with the selector shaft is provided with a viewing area in which only one member from cooperating tens and units dial members is simultaneously visible.