Abstract: A vehicle equipped with a system (30) for automatically disengaging and engaging a friction clutch (13) coupling between an engine (11) and a transmission (16). The vehicle is also equipped with an automatic brake system (34) for automatically applying and releasing a brake to and from wheels (43). The automatic clutch disengagement/engagement system (30) performs high speed clutch engagement at the time of restarting the vehicle. The automatic brake system (34) releases the brake upon completion of the quick clutch engagement. The quick clutch engagement occurs in a clutch play range. The amount of quick clutch engagement is determined by depression of an accelerator pedal (10). Since the accelerator depression varies from when the vehicle is started on a flat road to when on an inclination, an optimum brake releasing is effected regardless of the road inclination if the timing of brake release is determined in this manner.

Abstract: A transmission compounder assembly having a one-way clutch between an input shaft and an output shaft to establish a direct-ratio drive path therebetween. A planetary gearset can be selectively engaged to establish a compound-ratio drive path between the shafts. The planetary gearset includes a sun gear, a ring gear fixed to the output shaft, a carrier fixed to the input shaft, and a plurality of planet gears rotatably supported from the carrier and meshed with both the ring gear and the sun gear. A band brake is provided for selectively braking the sun gear. A controllable overrunning clutch is mounted between the carrier and the sun gear and can be selectively shifted between a locked mode and a released mode. The compounder assembly further includes an actuator for controlling actuation of the band brake and the overrunning clutch.

Abstract: A power transmission apparatus which can function as a torque limiter during an overload condition. A Belleville spring is provided for generating mutual frictional engagement in areas between a flange part integral to an inner holder member, a washer, arc shaped projections of a flange part of a hub and a washer. As a result, during a normal condition of a compressor, the rotating movement of the inner holder member located adjacent to the rotating movement source is transmitted via the frictional engagement mechanism to a hub and then to a rotating shaft. Contrary to this, during an overloaded condition, a slippage is generated in the area between the washer and the arc shaped projections of the flange part of the hub as a frictional engaging area of a lower coefficient of friction.

Abstract: A device for overload protection and for braking a machine part driven by a motor (2), in particular, a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4) disengaging after exceeding a torque threshold, and a freewheel (6) which, during the braking of the drive shaft (1) blocks in the direction of drive, each being arranged on the drive shaft (1) behind one another in the drive line extending from the motor (2) to the machine part.

Abstract: A transmission compounder assembly comprising an input shaft, an output shaft and a one-way clutch operable to establish a direct-ratio drive path between the shafts. A planetary gearset can be selectively engaged to establish a compound-ratio drive path between the shafts. The planetary gearset includes a sun gear, a ring gear fixed to the output shaft, a carrier fixed to the input shaft, and a plurality of planet gears rotatably supported from the carrier and meshed with both the ring gear and the sun gear. A band brake is provided for selectively braking the sun gear. A clutch pack is mounted between the carrier and the sun gear and can be selectively actuated to prevent relative rotation therebetween. The compounder assembly further includes a brake actuator for controlling actuation of the band brake and a clutch actuator for controlling actuation of the clutch pack.

Abstract: A braking component such as a brake pad, brake rotor, brake drum or clutch disk is comprised of a metal substrate having a friction material laminated on at least a portion of at least one face of the metal substrate, the friction material being a ceramic-metal composite comprised of a metal phase and a ceramic phase dispersed within each other, wherein the ceramic phase is present in an amount of at least about 20% by volume of the ceramic-metal composite. In particular, the braking component is a metal substrate, such as aluminum, having laminated thereto a ceramic-metal composite of a dense boron carbide-aluminum composite having high specific heat and low density.

Abstract: A device for overload protection and for braking a machine part driven by a motor (2), in particular, a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4) disengaging after exceeding a torque threshold, and a freewheel (6) which, during the braking of the drive shaft (1), blocks in the direction of drive, each being arranged on the drive shaft (1) behind one another in the drive line extending from the motor (2) to the machine part.

Abstract: A clutch comprises an inner rotatable member 1, an outer rotatable member 2 serving as an output shaft, a plurality of rollers 3 serving as torque transmission members disposed between the Inner and outer rotatable members, and a retainer 4 serving as an Input shaft. The retainer 4 Is connected to a motor 7, which serves as an input source, through a wore and wormwheel mechanism 6. A viscous fluid, e.g., a highly viscous fluid 10 such as silicone oil, is sealed In a clearance between the Inner rotatable member 1 and a shaft member 8, and a centring spring 12 is interposed between the inner rotatable member 1 and the retainer 4.

Abstract: In a method of operating an automatic clutch arranged between an engine and a drive train of a vehicle during low speed operation of the vehicle which has a brake system, a clutch control unit and sensors supplying to the clutch control unit information concerning vehicle speed and actuation of the brake system, the clutch is controlled below a certain vehicle speed to transmit only a limited torque to the drive train and, upon actuation of the brake system, the clutch is controlled such that the torque transmitted to the drive train decreases with increasing effectiveness of the brake system.

Abstract: To prevent overloading of a clutch interposed between a driving, or input shaft (2, 112) and a driven, or output shaft (4, 115) upon blockage of the output shaft while continuous rotary power is being transmitted to the input shaft, a plurality of centrifugal weights (16, 117) are located on an output clutch member (14, 116) so that, in case of blockage of the output shaft, centrifugal force will immediately cease and power transmitting engagement between the input and output shafts will be disconnected. In order to permit starting of the clutch, a predetermined small frictional force between an input clutch member (6, 114) coupled to the driving or input shaft (2, 112) and the output clutch member (14, 116) is established, essentially independent of speed, for example under control of springs (22).

Abstract: The invention provides an overspeed protection system for a vehicle such as a mine skip travelling along a vertical set of rails 60. In use an idler wheel 62 in contact with a rail 60 rotates a shaft 12 forming part of a clutch 10 at speeds which are directly proportional to the linear travelling speed of the vehicle. When the rotational speed of the shaft 12 exceeds a predetermined limit the clutch 10 frictionally transfers torque from the shaft 12 to a shaft 14, which in turn drives an hydraulic pump 64. The pump 64 pressurises hydraulic fluid in a supply line 67 until it opens a valve 68, which admits a pressurised fluid from a reservoir 74 into a braking means 80, which performs a clamping action on an associated rail 60 to restrain the motion of the vehicle.

Abstract: Electrically powered or manually driven clutch and brake mechanism for an electric wince cooperate with a transmission mechanism. The clutch mechanism is provided with a thrust bearing on a clutch shaft and a large clutch gear is then inserted thereon. A lining plate is attached to a clutch plate of the large gear and a pinion gear is attached tightly to the lining plate. Another thrust bearing is placed behind the pinion gear and a compression spring is inserted on the clutch shaft. The large and the pinion gears can be pushed tightly together or loosened as a function of resiliency of the spring. A clutch hand wheel can be provided for manual operation. In addition, the brake mechanism is designed such that a rotating shaft of a motor is provided with a disc brake which has a unidirectional bearing. The disc brake can be squeezed tightly by disc pads.

Abstract: A device for overload protection and for braking a machine part driven by a motor (2), in particular a tool driven by a cam gear in a stamping and/or bending machine, comprises a brake (3), an overload clutch (4) disengaging after exceeding a torque threshold, and a freewheel (6) which, during the braking of the drive shaft (1), blocks in the direction of drive, each being arranged on the drive shaft (1) behind one another in the drive line extending from the motor (2) to the machine part.

Abstract: A device is provided for hand operation of a gas turbine engine thrust reversing system. Torque is applied to an input element and transmitted to an output element by way of a torque limiting means arranged to substantially remove the torque from the output element when the torque exceeds a threshold. The device also includes means to lock the thrust reverser against movement.

Abstract: A coolant pump system driven initially by an electric motor in-line with the pump shaft to the pump housing incorporates a ram air-assisted cooling system. The ram air-assisted cooling system includes an electric motor whose rotating shaft drives the primary fan member. A second fan member is located about and connected to the periphery of the primary fan member and is rotated by high velocity air streams purposefully directed at the secondary fan blades. The air which drives the secondary fan member is preferably gathered by one or more air inlet funnels. Typically, two air inlet funnels are equiangularly disposed adjacent the periphery of the secondary fan blade members so that a balanced current of air is swept across the secondary fan blades. A shroud extends over the secondary fan blade members to force the inlet air over the fan blade members.

Abstract: A drive mechanism which permits both rotational and vertical translation of a fluid dispense arm within a wafer processing system. A motor drives a brake/clutch coupling which, through selective actuation and the utilization of two drive gears, causes selective rotation and/or translation of an output shaft attached to the fluid dispense arm. Selective rotation and/or translation of the output shaft and the fluid dispense arm permits the use of the apparatus without modification of the spin deflector and associated baffling in the wafer processing area.

Abstract: An interlocking clutch brake provides first and second parts adapted to radially fit together to form a disc-shaped body having a central aperture for engaging a clutch shaft. Both first and second parts are U-shaped, and are interlocked together by means of mating tongue and groove members. The first and second parts employ bores which are adapted to become axially aligned for receiving the ends of a bowed spring. The bowed portion of the spring is adapted to become partially flattened as a bolt, secured through an aperture in the spring to a threaded aperture in the second part, is rotated by a hand-tool. Partial flattening of the bowed portion causes the spring ends to spread apart to engage respective sets of aligned bores for retaining the two parts together.

Abstract: A mechanism (10) for limiting rotation of a rotatably mounted first shaft (12) in accordance with the invention includes a housing (28) in which the first shaft is rotatably supported; a torque input (14) coupled to the first shaft; and a torque output (18) coupled to the first shaft; a second shaft (30) rotatably supported by the housing and movable between a first axial position in which the second shaft does not engage the first shaft and a second axial position in which the second shaft engages the first shaft; at least one member (32) attached to the second shaft which projects radially from the second shaft; and the housing having an inner cavity (42) with at least one surface (70) which engages the at least one member which projects radially at first and second angular positions of the shafts to provide for a limited degree of angular rotation of the shafts when the second shaft is in the second axial position.

Abstract: This invention relates to a clutch device for a transmission wheel and a transmission shaft. Two brake rings surround a hub axle and are contained in a brake hub. The first brake ring is intermediate the hub axle and the second brake ring and arranged so that, due to a time differential of braking by an external force on the two brake rings, a bevel canal in the first brake ring braces against a loose pin inserted in the hub axle, forcing the loose pin to part from the transmission wheel. This achieves the purpose of separating the transmission wheel and the transmission shaft in order to instantly stop the work done by the transmission shaft, and is particularly effective with common machine tools. It may be used with a magnetic solenoid or a manual trigger control, pre-regulating the bolts for the slackness and tightness of brake linings, to successive action with a proper time differential.

Abstract: A power take-off control lever arrangement in which a single control lever 32 controls an engine speed power take-off clutch C2, a ground speed power take-off clutch C2 and a power take-off brake B. The control lever 32 is movable between positions C1' and B' in which switches 28 and 29 are operated to initiate engagement of the engine speed clutch C1 and brake B respectively which are both hydraulically operated. Lever 32 is also movable against the action of spring loading 49, to a position G in which it engages a fork 43 of a mechanical actuating system 43, 41, 31 for the ground speed clutch C2. Movement of lever 32 from position G to position C2' moves the mechanical actuating system to engage clutch C2. Lever 32 is only movable from position C2' to positions C1' and B' via position G to ensure disengagement of the ground speed clutch C2 before initiation of the engagement of the engine speed clutch c1 or the brake B.

Abstract: The type of machine in which the invention finds maximum utility is the self-propelled, user-guided garden machine such as a rotary tiller. A typical machine of that genre has a straight-through axle without a differential and opposite ends of the axle project as right and left shafts to which right and left ground-engaging wheels are respectively affixed. The improvement provided by the present invention resides in right and left clutch-brake units arranged symmetrically at each side of and external to the transmission case. The keys normally fixing the wheels to their shafts are removed and the wheels are instead journalled on the respective shafts and the clutches are alternately engaged and disengaged between the shafts and wheels to facilitate steering of the machine. Each clutching unit includes a brake and controls are provided for effecting braking and clutch disengagement at either side of the machine.

Abstract: A hydraulic circuit for controlling an automatic transmission. The hydraulic circuit has a control valve connected between a shift valve and a hydraulic servomotor for actuating a frictional engagement element such as a brake in a main transmission unit. The control valve is controlled by a signal from a control means in such a manner that, when the hydraulic servomotor is drained by the operation of the shift valve to disengage the brake, the engagement of a frictional engaging element in another transmission unit is synchronized therewith.

Abstract: A blade-brake clutch device of a lawn mower in which a brake drum of an internal expanding type brake and a clutch drum of a centrifugal type clutch are combined together with back to back relation and fixedly secured to a rotating shaft of a mower blade, there being provided a clutch boss member for holding clutch shoes of the centrifugal clutch and fixedly secured to an output rotating shaft of an engine of the lawn mower.

Abstract: The pedal carrier is so arranged as to permit mounting it and dismantling it in an easy manner with no use of a tool. For this purpose, each end of the pin (7) carrying the pedals is engaged in a sleeve (10,11) including a generally circular-shaped bearing surface (12) with two parallel flat portions, each bearing surface cooperating with the inner contour of an aperture (15) which has the same diameter and is provided in the side wall and communicates with the edge of this wall through a passage whose width is slightly greater than the distance between the flat portions, means being provided for immobilizing the assembly formed by the pin (7) and the sleeves (10,11) relative to the side walls (5, 6).

Abstract: A portable power unit for unloading a silage wagon which unit is adapted to be conveniently mounted on the back of the truck used to tow the wagon. The power unit comprises a gasoline engine and a gear reduction unit that is driven by the engine, the reduction unit having a splined output shaft that is adapted to be connected to the self-unloading wagon to power its conveyor. The engine drives the gear reduction unit through a normally loose belt, and a clutch is provided that takes the slack out of the belt when the clutch is engaged. The belt pulley for the gear reduction unit has a brake disc connected to it which coacts with a caliper brake. The brake is actuated by the clutch when the latter is disengaged and operates to hold the brake disc and its pulley against rotation.

Abstract: In a crank or eccentric press a main shaft is rotatably supported over a reciprocating ram or rams. Nonrotatably mounted on one end of the main shaft, a drive gear meshes directly with a drive pinion on a drive shaft which partly projects out of one side of the drive housing and which has a driving flywheel mounted on the projecting end. The other end of the main shaft is geared to a brake shaft having a portion projecting out of the other side of the drive housing and having a brake mounted thereon. Within the drive housing one or more axially spaced pairs of main pinions are fixedly mounted on the main shaft. Each pair of main pinions are in mesh with two pairs of main gears rotatable about fixed axes. Each main gear has a crankpin projecting therefrom and operatively coupled to the ram. This drive system makes possible the reduction of the height of the press.

Abstract: An impact-resistant phenolic resin composition comprising 99 to 25% by weight of a phenolic resin and 1 to 75% by weight of a nitrile group-containing highly saturated polymer rubber whose amount of bound nitrile ranges from 10 to 60% by weight and having an iodine value not exceeding 120.

Abstract: A clutch and brake device having a clutch hub of an input shaft side engaged with a clutch case by spline fitting the clutch case onto an output shaft freely movable in the axial direction and by utilizing an elastic force of a clutch spring. An annular friction plate forming a frictional surface on its flank is fitted onto the clutch case so as to rotate together with the case so as to be restricted in its movement thereto in the axial direction. A non-rotational member for braking the clutch case is made to face towards the frictional surface of the friction plate with a clearance kept between them. The clutch unit is disengaged and simultaneously the friction plate contacts with the non-rotational member to brake the clutch case when the clutch case is moved in the axial direction in order to disengage the clutch unit.

Abstract: A clutch brake particularly adapted for use with heavy duty automotive vehicle clutches, the clutch brake including an annular base comprised of a pair of initially separate sections incorporating radial interlocking teeth which permit the clutch brake to be assembled and installed on the driven shaft of the clutch without requiring disassembly of such driven shaft.

Abstract: A method and apparatus for operating a switching device such as a clutch or brake for a moveable element such as a shaft which is driveable by a prime mover such as a rack and pinion device. The clutch selectively connects the shaft to the prime mover and the brake alternately and selectively connects the shaft to the housing. A motor sinusoidally reciprocates the rack by way of an eccentric drive and the rack drives a pinion on the input side of a pneumatic clutch and brake unit. The clutch is always operated in only one direction of movement and the moveable shaft can thereby be intermittently driven in one direction. A continuously rotating motor shaft carries a signal generator disc having a signal generating track in the form of recesses which are scanned photoelectrically. An operating signal which holds the clutch engaged during one half period is received by the signal generator and delivered by a control device.

Abstract: A control lever assembly for a lawn mower has a main lever and an auxiliary lever pivotably mounted on lawn mower handle. The main lever is operatively connected through spring biased wire to tend to open a clutch and apply a brake for a rotary cutter of the lawn mower. The auxiliary lever when manually held against the mower handle pushes a resilient arm on the main lever out of engagement with a first stop on the body, thereby automatically causing the main lever to connect the clutch and disengage the brake. A spring biased second movable stop on the auxiliary lever is received in a recess in the main lever to detent the main lever in the locked position for operation of the mower. When the auxiliary lever is released manually by the operator, the second movable stop carried thereby is retracted out of the recess on the main lever to automatically return the wire to disconnect the clutch and engage the brake.

Abstract: An improved clutch and brake unit in combination with a rotatable flywheel, the clutch and brake unit having a housing assembly forming a reservoir chamber around a portion of the drive shaft of a machine and surrounding the clutch and brake unit which permit the housing assembly, clutch and brake unit, and shaft to be removably secured as one unit to the rotatable flywheel. A universal coupling is also disclosed, used in combination with an output shaft of a drive assembly and an extension shaft of a driven assembly, comprising radially outwardly extending flanges at the adjacent ends of each shaft, a mating boss on one shaft matable into a recess in the other shaft to dispose the shafts such that the flanges are adjacent one another, a key inserted in a transversely disposed keyway disposed in part within each shaft, a retainer to hold the shafts together at the flanges and retain the key and securement to secure the retainer to the shafts.

Abstract: An article-holding turret which is particularly suitable for rotatably conveying large objects. A friction brake is fixed to a pawl plate, and these axially mounted structures are oscillated by a rack and pinion assembly driven from a turret index shuttle. A ratchet and spindle assembly is coaxially mounted on the turret's central shaft, and caused to periodically index through desired angular intervals by a pawl carried on the pawl plate. The forward rotation of the ratchet and spindle assembly is accompanied by a commensurate rotation of the friction brake, thereby minimizing rotational drive forces required during this segment. An auxiliary pawl and bracket assembly prevents retrogression of the ratchet and spindle during the reverse oscillation of the friction brake assembly.

Abstract: A steering brake and clutch control for a crawler vehicle includes a pair of primary control levers, each of which, when operated by itself, acts through a spring to first effect disengagement of normally pressure-engaged clutch and then through a linkage to effect engagement of a brake. The clutch control levers are interconnected so that simultaneous actuation of the primary control levers results in both brakes being engaged without the clutches being disengaged. A pair of brake control levers have respective one-way connections with the pair of primary control levers and are spring-biased for simultaneously actuating the primary control levers to effect brake engagement. A pressure-operated plunger assembly is operative to maintain the brake control levers away from the primary control levers so long as sufficient hydraulic system pressure exists for normal operation.

Abstract: A cylindrical chamber full of oil, without any valves or inlet/exit ports for this oil. A piston travels in said sealed cylindrical chamber with a rod on either side, assembled with sealing rings and provided with a series of peripheral axial holes all of the same diameter and equidistant from the piston axis. On the rod anchored to the ram slides a plunger disc supported directly under the piston assembly by two diametrically opposed threaded studs with large heads. Said studs are first threaded through the piston assembly and then screwed through the two holes found on the plunger disc. The upward travel of this disc which stops under and against the piston holes, is prevented each time the dual push-button control is operated since, when operating, these buttons, besides starting the movement of the ram, prevents the upward travel of the plunger disc simultaneously.

Abstract: A hoist drum control includes a drum clutch control pressure graduating valve (15) connected between a pressure air source (14) and a shuttle valve (21), the latter being connected in a line to the drum drive clutch cylinder (25). Quick release valves (22, 24) are disposed closely adjacent the clutch cylinder and the shuttle valve for releasing pressure in the clutch cylinder line. An adjustable drag regulator (16) and air supply poppet valve (17) is connected between the air source and the shuttle valve (21) and is actuatable to supply low pressure to the drum drive clutch cylinder (25) for dragging. A momentary return of the drum from dragging to full speed is accomplished by momentarily shifting the said pressure graduating valve (15) to an out-of-neutral mode to supply high pressure to the drum drive clutch cylinder (25). A normally open relay valve (20) is disposed in the line between the regulator (16) and poppet valve (17) and one side of the shuttle valve (21).

Abstract: An improved apparatus for opening and closing door members wherein the door member is connected to an output shaft, the rotation of the output shaft opening and closing the door member. A brake drive assembly is connected to the output shaft and constructed such that a torque applied at the output shaft causes the brake drive assembly to be conditioned in the braking mode. A ball drive assembly is connected to the output shaft and constructed such that the output shaft is rotated in response to the rotation of a portion of the ball drive assembly.

Abstract: A transport mechanism for articles between a pair of conveyors includes a constantly driven drive member, a driven member and a ball and detent mechanism intercooperating between a pair of confronting surfaces of the members. The transport mechanism is mechanically phased in and out in operation in timed relation to movement of the conveyor to which articles are moved. Mechanical phasing in and out is carried out by a lever having a tooth adapted for engagement in a notch of the driven member and a wheel cooperative with a rail including a gate on the drive member. The transport mechanism is phased out of operation when the wheel enters the gate and phased in in operation when the wheel exits the gate.

Abstract: This invention relates to a motorized window regulator for motor vehicles, which regulator is provided with a torque limiting mechanism of particularly advantageous construction and operation. According to the invention, a motor transmits motion to the window via a kinematic operating linkage, which comprises a cylindrical surface on which a spiral spring with preloaded turns is interference mounted. The ends of the spring engage alternately with a stop rotating coaxially to the surface such that they become urged to deform the spring in opposition to its preloading, so as to withdraw it resiliently from the cylindrical surface.

Abstract: A synergistic safety system is incorporated in a crane driven by a high-speed motor which requires both an energy-absorbing torque-limiting device in the speed reduction unit and a drum emergency holding device. The energy-absorbing torque-limiting device transmits the static and dynamic torque required to rotate or hold the drum against the maximum carried load, but will slip at a pre-determined setting to absorb high-speed rotational energy of the drive train and/or torque of the drive motor in the event a two-blocking, load hang-up, overload, or engagement of the drum emergency holding device occurs. The drum emergency holding device is set automatically when the energy-absorbing torque-limiting device is actuated and/or any drive train component fails, which are detected by one or more sensing sub-systems.

Abstract: A press drive mechanism is disclosed having brake and clutch units including corresponding disc assemblies concentric with respect to the output shaft of the mechanism. A fluid operated piston-cylinder assembly concentric with the output shaft is operable to alternately actuate the brake and clutch units, and an auxiliary fluid operated piston-cylinder assembly is selectively operable to effect simultaneous actuation of the brake and clutch units.

Abstract: The knob comprises a body which cannot turn the control shaft unless the body is first pushed in. A brake prevents turning of the knob body when the body is in normal condition. Upon pushing the body rearwardly, the brake is disengaged to allow turning of the knob. Upon releasing the body, spring means projects the body forwardly back to normal condition in which the brake prevents the body from turning. Spring pressed balls allow the body to turn without turning the control shaft upon exerting excessive torque on the body to thereby prevent damage to the controls. Means is provided to limit turning of the control shaft to a predetermined angle.

Abstract: A clutch arrangement for a motor driven chain saw having a first clutch element driven by the motor shaft and a second clutch element normally engaged with the first clutch element but disengageable therefrom and a centrifugal clutch between the second clutch element and the drive sprocket for the saw chain. The second clutch element includes a spring disc and is axially yieldable between clutch engaged and clutch disengaged positions. A lever is provided moveable for disengaging the clutch elements and a brake member connected to the lever is operable for braking the drive sprocket when the clutch elements are disengaged.

Abstract: A motor chain saw with a driving sprocket wheel adapted to be driven by a motor through the intervention of a centrifugal clutch, or the like. A safety clutch is arranged in the driving connection between the motor shaft and the driving sprocket and disengageable by a release mechanism. The safety clutch includes at least one disengageable follower member for interconnecting the two pertaining clutch members while being coaxially arranged with the centrifugal clutch and being located adjacent thereto. The safety clutch is arranged on that side of said centrifugal clutch which faces toward the driving sprocket while being located in the driving connection between the centrifugal clutch and the driving sprocket.