Abstract: A tube is used in fiber-reinforced plastic power transmission shaft. The tube comprises: a cylindrical body section; a connection portion that has a larger diameter than the body section; and an inclined portion that has an outer diameter that increases toward the second connection section from the main body part. The inclined section has formed thereon, a weak section that is damaged when a load input in the axial direction exceeds a prescribed value. With this configuration, the cost of the tube can be reduced, and when a prescribed load is input to the tube in the axial direction, the tube is reliably damaged.

Abstract: A damper and pulley assembly for an internal combustion engine is disclosed. The damper and pulley assembly, including a pulley closely fitted between two dampers, is configured to have increased air movement for heat dissipation while conforming to low spacing requirements of an engine compartment. The pulley can have multiple slots along its two side surfaces and openings located in the slots. The slots and openings of the pulley are aligned with openings of the two dampers, and facilitate air movement through the pulley and around the dampers.

Abstract: A propeller shaft for a vehicle in which a tube yoke is connected to a main tube via an adapter and tapered splines are formed at the contact regions between a tube yoke and the main tube to transmit the power output from a transmission to a rear wheel. The tube yoke and the main tube are displaced relative to each other at the tapered splines to break the adapter. The tube yoke and the main tube are thus separated from each other by virtue of the breakage of the adapter.

Abstract: A method and decoupler for disengaging an output shaft from an engine in a back drive event with a backdrive decoupler. The backdrive decoupler includes a an output shaft, drive shaft, and a retention mechanism selectively coupling the output shaft to the drive shaft. In a backdrive event, the decoupler decouples the output shaft from the drive shaft.

Abstract: A method and disconnector for disconnecting a drive shaft of a drive mechanism from rotating equipment, upon a failure of the drive mechanism or rotating equipment, includes a housing, an arm extending from the housing and movable relative to the housing between a first position and a second position, and a parting tool on a distal end of the arm.

Abstract: Disclosed is a two-component power take-off (PTO) coupling system for efficient and simplified attachment of implements to a power take-off system of a tractor or other prime mover, having a first component to be attached to the PTO shaft of the tractor or other driver and a second component attached to the implement to be coupled. The coupling system serves to eliminate the difficult task of attaching or detaching a power shaft on a rotary driven farm implement such as a rotary cutter, tiller, generator, pump, etc. to tractor power take off (PTO) or any other driver that has an auxiliary splined power out-put shaft. It is designed for any application in any industry that requires frequent connecting or disconnecting of a rotating shaft to transfer power or torque. The coupling system can accommodate two different series PTO shaft types for example, if the implement has a type two (2) shaft but the owner's tractor is a type one (1) the coupling system can be adapted to accommodate both.

Abstract: An overload protection device in combination with a prime mover and gearbox transmission supplies torque through a gearbox transmission to a load. An input shaft with is driven by the prime mover and rotates therewith. An external spline on the input shaft mates with an input gear having an internal spline. Upon overload of the gearbox transmission, the input shaft fractures an annular groove in the input shaft. A bushing prevents travel of the portion of the input shaft which is driven by the prime mover and which continues to spin after the fracture.

Abstract: A flexspline protective structure includes a first rotation member, a second rotation member and a plurality of fixing members. The second rotation member is sleeved on the first rotation member. The plurality of fixing members fix the first rotation member and the second rotation member together and are capable of breaking off in the event of jamming or other mischance to enable the second rotation member to rotate freely relative to the first rotation member. The disclosure presents a robot arm mechanism equipped with the flexspline protective structure.

Abstract: A torque limiter for transmitting motion from a drive shaft to a driven member, and for disconnecting the driven member from the drive shaft when a predetermined transmitted twisting torque value is exceeded is provided. The torque limiter has a hub fitted to the drive shaft; a rotary first flange fixed to an axial end of the hub; a second flange fixed to the driven member and facing the first flange; and a number of modules fitted to an annular portion of the first flange, and for transmitting motion from the first flange to the second flange, and for cutting off transmission when the transmitted torque exceeds a predetermined maximum value. The first flange is fixed to the hub at the same annular portion to which the modules are fitted, and the hub has a number of appendages projecting radially outwards and each fixed to the first flange by at least one bolt. The modules are equally spaced along the annular portion of the first flange, and one appendage is located between each. two adjacent modules.

Abstract: A coupling means (10) provided with a first member (20) suitable for being fastened to a first rotary part (2) and with a second member (30) suitable for being fastened to a second rotary part (3), the first member (20) being provided with a first diaphragm (22) and the second member (30) being provided with a second diaphragm (32) that is secured to the first diaphragm (22). An emergency torque transmission device comprises at least one bayonet system including a protuberance (50) secured to one member (30) and co-operating with an angled groove (60) secured to the other member (20) by being inserted in the angled groove (60) by a thrust-and-rotation movement, in the absence of said breakage said coupling means (10) including both axial clearances in compression (70?) and in translation (70?) and also circumferential clearance between each protuberance (50) and walls defining the corresponding angled groove (60).

Abstract: An apparatus comprising a torque wire connected to an imaging probe; and a torque limiter defining a bore, a first end of the torque limiter being in mechanical communication with a motor, a second end of the torque limiter being in mechanical communication with the torque wire, the torque wire being disposed through the bore of the torque limiter. The torque limiter comprises a member defining at least one cutout which causes the torque limiter to break when rotational force on the torque wire exceeds a predetermined amount, thereby decoupling the motor from the torque wire.

Abstract: A torque limiter includes a shaft member, and a cylindrical member which is fitted rotatably on the shaft member. When the cylindrical member is rotated relative to the shaft member in such a state that the cap member is not screwed in the threaded hole and in such a state that the oil release passage is not opened to the outside, the other end portion of the oil release passage circumferentially moves within the circumferentially extended groove while being spaced apart from the circumferentially extended groove.

Abstract: An overload protection device in combination with a prime mover and gearbox transmission supplies torque through a gearbox transmission to a load. An input shaft with is driven by the prime mover and rotates therewith. An external spline on the input shaft mates with an input gear having an internal spline. Upon overload of the gearbox transmission, the input shaft fractures an annular groove in the input shaft. A bushing prevents travel of the portion of the input shaft which is driven by the prime mover and which continues to spin after the fracture.

Abstract: A drive unit for driving a ring gear includes a motor, a transmission and a drive shaft, on which a pinion is arranged for driving the ring gear, wherein the drive unit includes a mechanical overload protection. In accordance with the invention the overload protection is arranged between the transmission and the pinion.

Abstract: A torque-limiting coupling may be used to provide a torsion drive between an engine or motor and a driven accessory. If an accessory should experience a catastrophic failure a torsion limit is exceeded and a spline breaks away from the coupling. This guarantees that the internal engine gearing used to drive the accessory is not compromised and interfering with essential moving parts inside the engine. Further, a misalignment compensation limits the side load and wear that occurs when coupling two precision shafts with little clearance on the bearings. With a misalignment coupling, the mount can be slightly out of parallel with no negative effects.

Abstract: A torque limiter in which an area of a region where an area of a region where an inner face of a circumferentially extending chamber intersects an oil pressure expanding chamber in an extended plane extended toward the oil pressure expanding chamber is larger than a sectional area of an opening of the oil removing hole which is opened to the circumferentially extending chamber.

Abstract: A mechanical protection device including: a transmission shaft having a main axis of rotation and an element that is frangible under a torsional overload; a movable member secured to the transmission shaft to rotate about the main axis and configured to move radially outwards relative to the main axis from a first position to a second position; a spring urging the movable member towards the first position; and a tangential abutment configured to stop rotation of the movable member about the main axis when the movable member is in the second position. The movable member and the spring are calibrated so that from a predetermined trigger angular speed the movable member moves from the first position to the second position under effect of centrifugal force greater than prestress of the spring.

Abstract: A drive unit is provided. The drive unit forms a power transmitting path that includes a driving shaft between a wheel/tire assembly and a driving power source provided separately for each wheel/tire assembly, and transmits power via the driving shaft. The drive unit has a weak portion, which is less durable than any other portion in the power transmitting path with respect to external force applied to the wheel/tire assembly, formed on the driving shaft.

Abstract: A shear valve protection member is disposed radially outwards of the shear valves and in the same axial position as the shear valves, which can be switched between a tightly attached state in which the strip-shaped shear valve protection member cannot move relatively to a cutting portion which connects to the other member by virtue of a frictional force generated between the cutting portion and itself by tightly attaching the cutting portion thereto in the radial direction and a tight attachment cancelled state in which the strip-shaped shear valve protection member can move in a circumferential direction relative to the cutting portion. The shear valve protection member can be switched between a position where the shear valves are covered with the shear valve protection member and a position where the shear valves are exposed from the shear valve protection member through the through holes therein.

Abstract: A torque limiter includes a shaft member, and a cylindrical member which is fitted rotatably on the shaft member. When the cylindrical member is rotated relative to the shaft member in such a state that the cap member is not screwed in the threaded hole and in such a state that the oil release passage is not opened to the outside, the other end portion of the oil release passage circumferentially moves within the circumferentially extended groove while being spaced apart from the circumferentially extended groove.

Abstract: A power transmission in which a driven body and a drive body for driving the driven body are rotated in the same direction and are coupled through a coupling portion, transmission of torque from the drive body is interrupted when the driving load of the driven body exceeds a predetermined level, and the coupling portion is constituted by combining members different from each other of a positive torque transmission member for transmitting torque in the direction of forward rotation and interrupting transmission of torque from the drive body by its own fracture when the driving load of the driven body exceeds the predetermined level and a negative torque transmission member capable of transmitting torque in the direction of reverse rotation. At a contact portion between the positive torque transmission member and the negative torque transmission member, interposed is a surface layer composed of a different kind of material from a material composing the positive and negative torque transmission members.

Abstract: A torque limiter includes a cylindrical member, and a shaft member which is fitted rotatably in the cylindrical member. The cylindrical member has a main body portion having in an interior thereof an oil pressure expansion chamber for pressing an inner circumferential surface of the cylindrical member against an outer circumferential surface of the shaft member and an oil release passage which is opened to the oil pressure expansion chamber at one end portion while being closed tightly at the other end portion and which is positioned further radially outwards than an outer circumferential surface of the main body portion. When the cylindrical member stays still relative to the shaft member, the other end portion of the oil release passage is accommodated within a cap member which is screwed to be fixed in a threaded hole.

Abstract: An air-conditioning compressor comprises a shaft rotationally assembled through a casing. A pulley is attached to the compressor by a roller bearing. A torque-transmitting member engages the pulley and the shaft together. Openings are formed between arms of an external torque transmitting part and a bore of an inner ring has a radius such to enable insertion of a crimping tool into the torque-transmitting subassembly to reshape local plastic features for assembly of the torque-transmitting subassembly. The local plastic deformations of the casing interfere with a transverse face of the inner ring, wherein the local plastic deformations are positioned in axial alignment with the empty spaces in at least one relative angular position between the torque-transmitting member and the inner ring.

Abstract: The present invention relates to a power transmission device of the clutchless compressor, which includes: a pulley; a hub disposed in one side face of the pulley and connected to a driving shaft of a compressor; a drive-side connection member including a connection portion detachably connected to one side face of the pulley and a breaking portion connected to the connection portion and broken when a torque above a preset value is generated in the compressor; and a driven-side connection member connected to one side face of the hub and is connected to the breaking portion and including a plastic deformation portion outside the driven-side connection member so that the driven-side connection member is plastic deformed or is broken due to plastic deformation if a rotational shock is applied from the connection portion to a remaining breaking member remaining even after the breaking portion is broken.

Abstract: A power transmission interconnects a drive body and a driven body by a coupling member, transmits torque of the drive body to the driven body, and interrupts the torque when a drive load of the driven body exceeds a predetermined value. The coupling member has, as separate sections in the coupling member, both of a positive torque transmission section and a negative torque transmission section. The positive torque transmission section holds torque in the forward rotational direction and, when a drive load of the driven body exceeds the predetermined value, interrupts transmission of torque from the drive body by its own fracture. The negative torque transmission section holds torque in the reverse rotational direction. Even if there is a torque fluctuation on the drive body, its influence can be suppressed as little as possible, and interruption of torque can be performed properly at a target interruption torque value.

Abstract: An actuator arrangement comprises a pair of symmetrically loaded screw actuators driven from a common motor through respective drive shafts, and a protection arrangement arranged to avoid the continued application of full motor drive to one of the actuators in the event of the occurrence of a jam condition associated therewith.

Abstract: An apparatus comprising a torque wire connected to an imaging probe; and a torque limiter defining a bore, a first end of the torque limiter being in mechanical communication with a motor, a second end of the torque limiter being in mechanical communication with the torque wire, the torque wire being disposed through the bore of the torque limiter. The torque limiter comprises a member defining at least one cutout which causes the torque limiter to break when rotational force on the torque wire exceeds a predetermined amount, thereby decoupling the motor from the torque wire.

Abstract: A drive joint, particularly a fixed joint in the form of a counter-track joint, for establishing a connection between two components in the drive train of a motor vehicle. The joint is provided with joint parts such as an inner hub, an outer hub and a ball cage containing torque-transmitting balls as additional joint parts. The outer hub of the drive joint can be destroyed in the case of an accident. The invention also relates to a drive shaft comprising such a drive joint.

Abstract: An automotive shaft assembly is provided including a first barshaft having a first connection end and a second barshaft having a second connection end. A connection tube rotationally engages the first connection to the second connection end and includes a shear diameter configured to experience shear failure in the presence of an overload torque such that the first connection end is rotationally disengaged the said second connection end.

Abstract: An apparatus comprising a torque wire connected to an imaging probe; and a torque limiter defining a bore, a first end of the torque limiter being in mechanical communication with a motor, a second end of the torque limiter being in mechanical communication with the torque wire, the torque wire being disposed through the bore of the torque limiter. The torque limiter comprises a member defining at least one cutout which causes the torque limiter to break when rotational force on the torque wire exceeds a predetermined amount, thereby decoupling the motor from the torque wire.

Abstract: A shock protection device having opposing pluralities of frangible splines separated by an annular groove disposed in an internal splined opening in a drive hub, the splines for intermeshing engagement with a splined end of a drive shaft for transferring rotary motion to a cutter head from a driveline. Variation in the width of the annular groove enables precise adjustment of the fracture torque for the shock protection device beyond the adjustment possible through variation in the number or configuration of the individual splines.

Abstract: A power transmission system including an integrally molded hub and elastic member, where stress is inhibited from concentrating at the gate marks remaining after integral molding. In a pulley driven by a belt, a plastic pulley side relief section 1a provided at a pocket section of the pulley and a plastic hub side relief section provided on an iron outer ring of the hub engaged at the pocket section whereby power is transmitted from the pulley to the shaft. The hub side relief section and outer ring forming parts of the hub, the iron inner hub to be fastened to the shaft, and the plastic cylindrical part are integrally molded so that the gate mark for plastic injection is formed near to or further to the outer circumference of the outer ring.

Abstract: A power transmission apparatus comprises a pulley mounted rotatably on a casing of a rotary device, a hub coupled to the pulley by fitting between depressions and protrusions, a power shutoff member for preventing excessive torque between a rotary shaft and the hub, and an engaging device for engaging the hub and the pulley each other. The engaging device includes a first stepped portion formed radially on the outer periphery of the hub and a second stepped portion formed radially on the inner peripheral wall of a rim of the pulley in such a manner as to engage the first stepped portion in the axial direction.

Abstract: A coupling mechanism for a scroll compressor comprises an orbiting scroll disk, a retention bolt, a bearing shaft and a retention nut. The orbiting scroll disk includes a first face configured to engage a stationary scroll disk to compress a working fluid, and a second face having a hub. The retention bolt is inserted into the hub. The bearing shaft is fit onto the retention bolt and includes a bearing surface for engaging a drive bushing of a drive shaft. The retention nut is threaded onto the retention bolt to retain connection of the bearing shaft with the orbiting scroll disk.

Abstract: In a method for estimating an entrance angle of a V-ribbed belt from a flat pulley to a V-ribbed pulley, the entrance angle is estimated easily at a stage of pulley layout design. The V-ribbed belt 10 forms a track which enters at an entrance angle of approximately zero degree (substantially perpendicular to a plane that includes an axis 3a of rotation) into the flat pulley 3, is wound along the outer peripheral face of the flat pulley 3 without deviating in the axial direction thereof, and extends substantially linearly from a winding end point c at the flat pulley 3 to a winding start point d at a drive pulley 1. The entrance angle ? of the V-ribbed belt 10 from the flat pulley 3 to the drive pulley 1 is obtained on the basis of the track of the V-ribbed belt by, for example, a three-dimensional CAD or the like.

Abstract: A power transmission apparatus for a compressor used in an air conditioner for a vehicle including a damper mounted to one side of a pulley rotated by a driving power transmitted from an engine wherein the damper and an elastic portion is formed between an outer ring and an inner ring, and wherein a mounting flange of the outer ring is coupled to the pulley and a mounting flange of the inner ring is coupled to a limiter. The limiter has a plate shape and comprises: a middle portion in a ring shape, an outside portion in a ring shape around the edge of the middle portion, and a neck portion connecting the middle portion and the outside portion, whereby upon overload, the neck portion is broken. The middle portion of the limiter is coupled to a hub, and the hub penetrates the center of the inner ring and is coupled to the limiter between the damper and the pulley.

Abstract: A stub shaft of a main rotor shaft of a generator has its flange or shoulder removed from its outer portion so in the event of a bending failure of the stub shaft the resulting axial load of the stub shaft is not transmitted to the main rotor shaft. Instead of a retention plug adjacent the distal end of the inside portion of the stub shaft, a knock out plug is lightly press-fit into the main rotor shaft. In the event of a failure, the outside portion of the stub shaft enters the main rotor shaft without applying an axial load onto the main rotor shaft, moves axially and displaces the knock-out plug without exiting the main rotor shaft.

Abstract: A torque-limiting coupling may be used to provide a torsion drive between an engine or motor and a driven accessory. If an accessory should experience a catastrophic failure a torsion limit is exceeded and a spline breaks away from the coupling. This guarantees that the internal engine gearing used to drive the accessory is not compromised and interfering with essential moving parts inside the engine. Further, a misalignment compensation limits the side load and wear that occurs when coupling two precision shafts with little clearance on the bearings. With a misalignment coupling, the mount can be slightly out of parallel with no negative effects.

Abstract: A power transmission device includes: a pulley 1 rotatably attached to a casing 9; a hub 2 connected to the pulley 1 by an engagement of protrusions with recesses; and a power shutoff member 3 interposed between the hub 2 and a rotary shaft 4. The power shutoff member and the rotary shaft 4 are joined to each other by means of screwing. When a water intrusion path formed between a hub side seating face of the hub and a shaft side seating face 44 of the rotary shaft is formed into a labyrinth structure, water is prevented from entering the seating face. An engagement portion 35 on the power shutoff member side is engaged with a hub side engagement portion 21a so that it can be accommodated in the hub side engagement portion 21a, and the power shutoff member can be rotated together when the hub is rotated. An engagement gap formed between a power shutoff member side engagement portion and a hub side engagement portion in the radial direction perpendicular to an axis of the rotary shaft is in a range from 0.

Abstract: A control system for a vehicle having first and second wheels is provided that includes a differential apparatus adapted to distribute torque between the first and second wheels and a traction controller for controlling operation of the differential apparatus from vehicle launch up to a predetermined vehicle speed. The traction controller is configured to engage the differential apparatus in a first operating state according to at least one vehicle operating parameter indicative of a low traction operating condition and to further control engagement of the differential apparatus in a second vehicle operating state during the low traction operating condition according to a difference between an actual vehicle yaw rate and a predetermined target vehicle yaw rate. The control system also includes a stability controller for controlling engagement of the differential apparatus at or above the predetermined vehicle speed.

Abstract: A power transmission device having a coupling portion of a driven body and a drive body constituted by combining a positive torque transmission member for transmitting torque in forward rotational direction but interrupting transmission of torque from the drive body by breaking itself when the drive load of the driven body exceeds a predetermined level, with a separate negative torque transmission member for transmitting torque in reverse rotational direction is further provided with a means for generating pretension in the positive torque transmission member in the pulling direction and simultaneously generating a pretension in the negative torque transmission member in the compressing direction after both torque transmission members are combined. A highly reliable power transmission device which can impart a desired pretension precisely and conveniently, and can interrupt torque properly by suppressing fatigue of material at the coupling portion can be provided.

Abstract: A power transmission device (10) comprises a rotatable rotary part (1, 2) to which a rotational drive force is transmitted from a drive source and a power transmission shut-off member (3) that shuts off transmission of an excessive torque between the rotary part and a rotating shaft (4) of a device to be driven. The power transmission shut-off member is threadedly coupled to the rotating shaft and can rotate with the rotating shaft. The rotary part is installed so as to be sandwiched between the power transmission shut-off member and the rotating shaft. A disc spring (8), installed between the power transmission shut-off member and the rotary part, is further provided. A caulked part (204a) for preventing a part of the power transmission shut-off member from dropping is provided on the front end side of the rotating shaft.

Abstract: To improve the damping of vibrations in aircraft propeller drives, the invention discloses an aircraft propeller drive comprising a propeller, a motor and a drive train between the propeller and the motor. The drive train of the aircraft propeller drive has a torsional vibration damper.

Abstract: An apparatus for transmitting torque from a motor to a compressor comprises a hub connecting with a compressor shaft and a pulley rotatably supported on the compressor housing, the pulley and the hub connected with one another by a device for vibration clamping and for load limiting and the load limiting is implemented so that the connection between the pulley and hub is discontinued if a specific torque is exceeded. The load limiting device comprises a catch and a limiter ring (b) comprised of metal including pegs directed radially to the center and, through radial form fitting with hub, transmits the torque onto the compressor shaft and catch is made of a synthetic material encasing the limiter ring and catch and limiter ring can be axially displaced on hub and the limiter ring is preferable made of sintered metal.

Abstract: A shear coupling assembly utilizes a novel pin coupling member having radial slots formed about a top portion of the insert member, the top portion being radially expandable once engaged in the box coupling member to lockingly engage the threaded connection. Locking of the insert member in the box coupling member prevents backing-off of the connection and maintains a pretension in the neck of the pin coupling member, during use. The top portion of the insert can be radially expanded by forcing a ball bearing into a counterbore formed in the insert member.

Abstract: An automotive shaft assembly is provided including a first barshaft having a first connection end and a second barshaft having a second connection end. A connection tube rotationally engages the first connection to the second connection end and includes a shear diameter configured to experience shear failure in the presence of an overload torque such that the first connection end is rotationally disengaged the said second connection end.

Abstract: An overload safety coupling, especially for the main drivetrains on rolling stands, which bridges a toothed spindle section and a spindle section with a permanent seat. The coupling includes a rotating-and-sliding sleeve, which has internal toothing at one end to hold the spindle section in a way that allows axial displacement. At the other end, the sleeve holds an inner sleeve, which is permanently seated on the spindle section. A pressure sleeve and a pressure gap pretensioned with pressure fluid produce a nonrotatable connection between the rear sleeve-like extension and the inner sleeve, which frictional connection gives way in the event of an overload.

Abstract: A stub shaft of a main rotor shaft of a generator has its flange or shoulder removed from its outer portion so in the event of a bending failure of the stub shaft the resulting axial load of the stub shaft is not transmitted to the main rotor shaft. Instead of a retention plug adjacent the distal end of the inside portion of the stub shaft, a knock out plug is lightly press-fit into the main rotor shaft. In the event of a failure, the outside portion of the stub shaft enters the main rotor shaft without applying an axial load onto the main rotor shaft, moves axially and displaces the knock-out plug without exiting the main rotor shaft.

Abstract: A shock protection device having opposing pluralities of frangible splines separated by an annular groove disposed in an internal splined opening in a drive hub, the splines for intermeshing engagement with a splined end of a drive shaft for transferring rotary motion to a cutter head from a driveline. Variation in the width of the annular groove enables precise adjustment of the fracture torque for the shock protection device beyond the adjustment possible through variation in the number or configuration of the individual splines.

Abstract: A power transmission apparatus (10) includes a rotary portion (1) to which turning driving force from a driving source is transmitted and which can rotate, a power cutoff member (3) mechanically connected to the rotary portion (1) and one of the ends of a rotary shaft (5) of a driven apparatus and cutting off transmission of excessive torque between them, and a cap (4) connected to the end of the rotary shaft (5) on one hand and fastened by screw meshing to the power cutoff member (3) on the other hand, and transmitting power from the power cutoff member (3) to the rotary shaft (5). The rotary portion (1), the power cutoff member (3), the cap (4) and the rotary shaft (5) all rotate integrally with one another. The cap (4) has a flange portion (4h) protruding in a radial direction with respect to an axis of the rotary shaft (5) and supporting an axial force.