Abstract: A transmission system and a method for operation of said transmission is provided. The transmission system includes a first friction clutch with a first set of discs splined to a shaft and a second set of discs splined to an inner circumference of a first gear. The system further includes a first hydraulic passage extending through the shaft and including an outlet in the shaft that directly supplies a lubricant to the first and second sets of discs during transmission system operation, where the first gear includes outer teeth that are positioned circumferentially around the first gear outward from the first and second sets of discs and is designed to mesh with a second gear in the transmission system.

Abstract: Disclosed is a brake winch with reverse release and self-locking functions. The brake winch has a housing with first and second side walls, an accommodating space, and an auxiliary bracket part. A rotating disk is screwed in the accommodating space. A main shaft is screwed on one side of the rotating disk in an interlocking manner. A screw adapter is screwed on the second side wall, and includes an inner connection end that is assembled with the main shaft, and its external end has a threaded groove. The axial displacement of a driving screw, which is screwed on the auxiliary bracket, is matched with the difference of forward and reverse rotation to form a screwing transmission or release mode between the stud section and the thread groove. A friction driving mechanism must prompt the drive screw, the clamping plate and the screw adapter to be in a tightly synchronized state.

Abstract: This invention is a portable pneumatically driven pressure intensifying positive displacement hydraulic power unit that can be transported in a bag or backpack and carried or worn by the user. The device can be powered by any suitable high pressure gas that is preferably contained in a small pressure vessel for portability. The device can be used to supply high pressure hydraulic fluid to tools with a wide range of uses in many fields including construction, industrial, breaching, and emergency service situations. This novel device does not require an electric or fuel powered hydraulic fluid pumping system, which allows it to be very portable and used in almost any environment (e.g., hazardous atmosphere or under water) without being tethered to an electric or fuel powered power source.

Abstract: A gear assembly for a motor vehicle comprising at least one shaft, at least one gear component arranged on the shaft, at least one engagement component which is engaged with the gear component or can be brought into engagement with the gear component, and at least one damping element. The damping element is arranged in an operative manner between the gear component and the engagement component and/or between the gear component and the shaft, and wherein the damping element is produced at least in part from amorphous metal.

Abstract: The present invention provides a core ring assembly for an elevator governor, a governor and an elevator system, wherein the core ring assembly comprises: a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween; and a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring, wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates with the first portion of the core ring by virtue of friction of the contact surfaces and enables a safety activating module. The core ring assembly provided by the embodiment of the present invention has a peak torque limiting function and a compact structure.

Abstract: An auxiliary brake assembly for use in a hoist, is disclosed. The auxiliary brake assembly comprises a pinion, a fastener, and a clutch assembly. The pinion may comprise a mesh gear disposed proximate a respective mesh gear of a rotor gear. The clutch assembly may be disposed between the fastener and the mesh gear. The fastener may be configured to compress the clutch assembly in the event a cable drum of the hoist is free spinning. The compression of the clutch may lock the pinion and the rotor gear and stop the cable drum from spinning freely.

Abstract: The invention relates to a concealing device for the separable connection of the at least one loose drum rotatably mounted on the main shaft (11) of a conveyor machine to the main shaft (11), wherein the separable connection of the loose drum to the main shaft (11) is positively realized by means of a guided coupling wheel (3a, 3b) that is engageable and disengageable by actuating devices (7). The guidance of the coupling wheel (3a, 3b) is arranged on the sides of the loose drum.

Abstract: A lifting device with a telescopic pole that has a lower module and an upper module which is mounted in vertical sliding relation with respect to the lower module and which is movable along the pole by a crank handle through a rack-and-pinion drive mechanism. A non-return locking device is automatically implemented by friction coupling mechanism with a drive pinion of the drive mechanism driven by rotating the crank handle for more than one complete turn.

Abstract: A hand winch including a winding roll, a flexible elongated member, a shaft connected to the winding roll, a friction brake including a brake disk and a gear element engaging the winding roll and mounted on the shaft. The gear element has a release position and a brake position in which the gear element enters into frictional contact with the brake disk, generating a braking torque resisting winding off the flexible elongated member. Friction means is provided between the shaft and the gear element for generating a frictional resistance therebetween such that, if a driving force acting on the gear element does not overcome the frictional resistance established by the friction means, the gear element drives the shaft through friction means. However, if the driving force between the shaft and the gear element overcomes the frictional resistance, relative movement between the gear element and the shaft occurs.

Abstract: A boat lift motor, comprised of a motor, such motor driving worm gear reducer which, in turn, rotates a tubular drive shaft, such shaft having radial splines running its full length, both outside and inside; wherein the opposite end of the splined tubular drive shaft overlays a spline shaft mounted on the center axle/bolt of a boat winch; wherein the winch is rotated to wind and unwind a cable, rope, cord or chain; and wherein the engagement or disengagement of the power supply to the boat lift is initiated by an electronic controller, which opens and closes a relay upon the user's command, communicated via a handheld remote control or otherwise.

Abstract: The present invention discloses a plane braking device for electric winches and electric winch which disposes a section of hollow gear shaft, a section of core shaft, a fixing ring, a wedge shape support, a stopping piece, a braking plate, an elastic element, a wedge shape piece B, a wedge shape piece A, a braking clutch base and so on in a gear box of an electric winch. When a motor works, the section of core shaft of the motor drives the braking clutch base and the wedge shape pieces A, B to rotate, until a gap is formed between the adjacent braking plate and stopping piece between the braking clutch base and the wedge shape piece B, so that the braking effect disappears. When the motor stops suddenly, a heavy load lifted by a tight wire drum provides a reverse pulling force so that the wedge shape piece B produces a reverse thrust force to push the friction planes of the braking plate and the stopping piece, so the plane braking effect is achieved quickly.

Abstract: A braking device for a winch comprises a braking bush, a brake driving shaft having one end connected to an output shaft of the motor and another end of the brake driving shaft having a first axial protrusion. A brake driven shaft defines an end rotatably disposed in the braking bush and having a second axial protrusion opposed to the first axial protrusion. A brake shoe is disposed between the first axial protrusion and the second axial protrusion. An elastic member is connected to the second axial protrusion and the brake shoe and normally urges the brake shoe toward the first axial protrusion. A winch having the braking device is also disclosed.

Abstract: An overload preventing apparatus of a hoist characterized in including a drive shaft 2 for driving a load sheave 1, a pressure receiving member 4 outwardly fitted to the drive shaft 2, a drive member 10 for transmitting a drive force from operating means 14 to the drive shaft 2 by way of the pressure receiving member 4, a rotation drive member 12 including means of transmitting the drive force from the operating means 14 to the drive member 10 and releasing an engagement with the drive portion 10 when the operating means 14 is applied with a torque equal to or larger than a predetermined torque value and an elastic member 13 mounted along an axial direction of the drive member between a back face of the rotation drive member 12 and an inner side end face of the operating means 14 to pose a problem that a belleville spring is obliged to be used as urging means, and therefore, a stroke in the axial direction of the urging means is small, also a height of an engaging claw becomes small in accordance with the str

Abstract: An automatic winder has a base, motor, a transmission device and a reel. The motor is mounted on the base. The transmission device connects to the motor and has a pair of high-speed gears and a pair of low-speed gears. The reel is mounted on the transmission device and has a spool of a cord. When the motor is overloaded, the motor connects to the pair of the low-speed gears to drive the reel to prevent the break of the motor.

Abstract: A winching and drawing machine comprises a drive shaft for driving a load sheave, a pressure receiving member fitted onto the drive shaft, brake plates installed in contact with the pressure receiving member and fitted onto the drive shaft, a pawl wheel interposed between the brake plates, a drive member screwed on the drive shaft so as to be pressed to and separated from the brake plates, an idler spring installed between the drive shaft and the drive member, and a lever. A stopper engaging with the drive shaft is provided at an end face of the drive member and an idler grip is fixed on an outer face of the stopper 7. Lever latching structure at a drive-shaft end of the winching and drawing machine has a function of adjusting a chain length.

Abstract: A three-phase drive motor is utilized to operate a boat lift. In one example, a drive motor arrangement for replacing manual drives on an existing boat lift winch shaft comprises a worm gear box with a worm driven by an integrally mounted motor on the worm gear box. A worm gear is mounted on a tubular cross shaft extending outwardly on opposite ends of the gear box. The bore of the cross shaft is of size to slide over an existing winch drive shaft. The tubular shaft has a drive connection that mates with the existing drive connection on the winch box shaft. As shown a disc that effects drives to a mating disc on the winch box shaft. After removing the manual ratchet and wheel on an existing winch shaft, the tubular shaft of the worm gear box can be put into place and a suitable fastener is used to hold the drive connection on the tubular shaft in engagement with the drive member on the winch shaft.

Abstract: An end surface gear-type overload protection device for manually operated hoists that utilizes a disc-shaped spring to control tension such that when the gears are in a leftward rotation and engagement, operation continues normally. However, during rightward rotation and the disabling thereof is instructed due to the clutch-type ratchet overload protection device, when in the “overload prevention” operations mode, if the set load of the disc-shaped spring is exceeded, the clutch-type gear wheel after sensing such allows the operating lever to spin in neutral and thereby discontinue operation. Additionally, it is possible to simply adjust the operating configuration to the “non-overload prevention” operations mode to conduct operation under overload conditions.

Abstract: A drive motor arrangement for replacing manual drives on an existing boat lift winch shaft comprises a worm gear box with a worm driven by an integrally mounted motor on the worm gear box. A worm gear is mounted on a tubular cross shaft extending outwardly on opposite ends of the gear box. The bore of the cross shaft is of size to slide over an existing winch drive shaft. The tubular shaft has a drive connection that mates with the existing drive connection on the winch box shaft. As shown a disc that effects drives to a mating disc on the winch box shaft. After removing the manual ratchet and wheel on an existing winch shaft, the tubular shaft of the worm gear box can be put into place and a suitable fastener is used to hold the drive connection on the tubular shaft in engagement with the drive member on the winch shaft.

Abstract: Disadvantages of the floating body of a SOI MOSFET are addressed by providing a pocket halo implant of indium beneath the gate and in the channel region of the semiconductor SOI layer of the MOSFET. Also provided is the method for fabricating the device.

Abstract: A winch comprises a drum rotatably mounted on a housing for winding a cable thereupon. A motor is attached to the housing, the motor supplying torque through a motor shaft. A special stage of planetary gears is mounted to the housing for transmitting torque between the motor shaft and the drum. The special stage of planetary gears includes a sun gear for receiving torque, a carrier/clutch unit and an annular ring gear encircling the carrier/clutch unit. The carrier/clutch unit includes a frame rotatably mounted to the housing and having walls defining a cavity therein, at least one circumferentially-spaced planet gear rotatably mounted on the frame for simultaneously engaging the sun gear and the ring gear, a selectively engagable clutch mounted within the cavity of the frame, and an output member which, when the clutch is engaged, can receive useful torque from the frame and, when the clutch is disengaged, cannot receive useful torque from the frame.

Abstract: In a hoist and traction machine including a free rotation control apparatus, a free-rotation spring 19, for urging an operating handle 18 toward a driving member 8 and also urging the driving member 8 in the brake releasing direction, is interposed between the driving member 8 and a stopper 17 provided on a driving shaft 5. When the operating handle 18 is pulled out, the driving member 8 is rotated to move away from a driven member 7 by a torsional urging force of the spring 19 and thereby a braking ratchet wheel 11 and braking plates 9, 10 is released. Engagement lugs 31 are then brought into resilient contact with free rotation surfaces 35 via an axial urging force of the spring 19 to maintain controlled free-rotation.

Abstract: A winch assembly (10) includes a first transmission assembly rotatably connecting a motor (11) to a winch drum (20) comprising clutches (12, 16) adapted to rotatably engage an output shaft (13) of the motor (11) to a winch drum shaft (19) of the winch drum (20) to wind in cable (22) onto the winch drum (20) and to payout cable (22) from the winch drum (20) by disengagement of motor drive shaft (13) from winch drum shaft (19).The winch assembly (10) further includes a second transmission assembly comprising an overrun clutch (23) rotatably connecting winch drum shaft (19) to motor drive shaft (13) if and when the payout speed of cable (22) from drum (20) exceeds a predetermined value.The winch assembly (10) is particularly suited to control conveyor belt tension in relatively large conveyor belts by simple on/off control of the clutches (12, 16) in response to sensed conveyor belt tension.

Abstract: A power winch is described which includes drive means with an output shaft, lock means to prevent reverse rotation of the shaft and a drum clutch assembly. The drum can be selectively engaged with or disengaged from the drum shaft. The lock means prevents the drum from rotating in reverse when it is engaged with the drum shaft. The power winch can be made compact and portable and can be powered by a small internal combustion engine.

Abstract: The invention relates to a winch for a vehicle which is compact enough to be located at the rear of the vehicle without causing due limitation to the cross country ability of the vehicle and yet at the same time, provides a reliable winch for drawing a vehicle to be towed to it and enabling the coupling member to be physically secured to the vehicle when the cable is in the fully wound position.

Abstract: A lever type hoisting machine capable of easily and securely pulling down a lower hook in no-load state. An operation wheel is rotatably supported in contact with a drive shaft and a pressure drive wheel, and an inside collision part and an outside collision part are disposed at the pressure drive wheel side part of the operation wheel and at the opposite side part, respectively, while a collision wall capable of being engaged with the inside collision part is formed on the pressure drive wheel, and a collision element capable of being engaged with the outside collision part is formed in a regulating member held movably only in the axial direction on the drive shaft in contact with the opposite side of the pressure drive wheel of the operation wheel, and a secure rotation in the hoist-down direction of the pressure drive wheel in no-load state is guaranteed, so that it is possible to pull down the lower hook in continuous state.

Abstract: A hydraulic power unit includes an engine and a pump mounted to a portable frame having an integral fluid reservoir for circulating the hydraulic fluid. Detachably mounted to the frame is a multiple speed winch. The fluid reservoir within the frame comprises the hollow structural tubing of the frame itself. The frame includes a handle for carrying the unit while the winch is in operation and for providing a hydraulic head to the pump and an expansion chamber for the hydraulic fluid. The multiple speed winch includes, in addition to the hydraulic motor, a first rotatable shaft and a second rotatable shaft operatively connected to the motor for providing two speeds to the winch. Each shaft has a freely rotatable hub mounted thereon which is engaged to its shaft by an associated clutch. By engaging and disengaging the clutches, the hydraulic motor may drive either of the shafts directly to reel in the attached cable or play it out.

Abstract: An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave winding-up thereabout a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and adapted to be clamped and released by rotative movement of the driving member relative to said driving shaft.

Abstract: An electric hoist includes an electric motor, a driving shaft connected to a rotor shaft of said electric motor, a reduction gear train for transmitting rotation of the driving shaft to a load sheave, and a mechanical brake assembly in the reduction gear train.

Abstract: An electric hoist includes an electric motor, a driving shaft connected to a rotor shaft of said electric motor, a reduction gear train for transmitting rotation of the driving shaft to a load sheave, and a mechanical brake assembly in the reduction gear train. According to the invention between the driving shaft and the rotor shaft of the motor is arranged an overload safety device comprising a support member fixed to the rotor shaft, a retainer member fitted onto the driving shaft, and a disc arranged between the support and retainer members through friction plates and having a one-way clutch. The one friction plate between the retainer plate and the disc has larger friction transmission force than that of the other friction plate between the support member and the disc.

Abstract: A hoist includes a shaft driven by external force, a driving shaft connected to the shaft, a reduction gear train for transmitting rotation of the driving shaft to a load sheave, and a mechanical brake assembly in the reduction gear train. According to the invention in the reduction gear train is arranged an overload safety device comprising a driven gear having a one-way clutch and rotatively driven by the driving shaft and radially inward and outward dual friction plates located between the driven gear and an element of the mechanical brake assembly so as to transmit torque through the radially outward friction plates in winding-up and through both the radially inward and outward friction plates in winding-off. With this arrangement, the electric hoist according to the invention is able to automatically prevent lifting, lowering and dragging a load under overload condition, and enables the once lifted load to be securely lowered irrespective of its light or heavy weight.

Abstract: An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave winding-up thereabout a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and adapted to be clamped and released by rotative movement of the driving member relative to said driving shaft.

Abstract: An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and adapted to be clamped and released by rotative movement of the driving member relative to said driving shaft.

Abstract: An idling device is able to bring a lever hoist into an idling condition including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable for hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by the gravitational force of the load and adapted to be clamped and released by rotative movement of the driving member relative to the driving shaft.

Abstract: An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and adapted to be clamped and released by rotative movement of the driving member relative to said driving shaft. According to the invention the idling device comprises a stopper fixed to the driving shaft and a manually operatable knob fitted on and rotatably and axially slidably relative to the driving shaft between the stopper and the driving member and provided with engagement protrusions adapted to be engaged in recesses formed in the driving member.

Abstract: A lever hoist comprises a change gear provided in a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and having a spring for releasing the braking assembly. According to the invention the lever hoist further comprises a brake spring control member rotatably fitted on the driving shaft, a brake clamping spring arranged between the driving member and the brake spring control member, and a direction change transmission mechanism for transforming rotation of the brake spring control member into axial urging force of the brake clamping spring.

Abstract: A lever hoist comprises a change gear for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and having a spring for releasing the braking assembly.

Abstract: A dual-handled manual winch has a ratchet wheel meshing constantly with a pawl and which is automatically frictionally locked to a drive pinion for the winch drum when the drum starts to overrun. The drive pinion is threaded into a drive shaft on the ends of which the handles are mounted in diametrically opposite relation and on which the ratchet wheel and a pair of friction washers are sleeved to be engaged between the pinion and the ratchet wheel, and between the ratchet wheel and a stop collar on the shaft, responsive to axial movement of the drive pinion in the shaft toward the ratchet wheel.

Abstract: A hand hoist or pulling apparatus including a drive clutch assembly, and a drive shaft and transmission gears associated with the assembly for pulling a chain on a load sheave by oscillating a lever. A holding member and a stop lever for preventing the member from movement are provided to hold a pinion on one end of the drive shaft in meshing engagement with the transmission gears and also to hold the pinion disengaged therefrom when the drive shaft is shifted. The holding member is held stationary against rotation, mounted on the clutch assembly and restrained from axial movement by the stop lever which is biased by a spring and pivotally mounted on a side plate.

Abstract: A hoist having an overload protection device is provided with a locking mechanism between a hoist body and a disc hub at a mechanical brake provided at the hoist body, the locking mechanism utilizing forward screwing of a driving member forming part of the mechanical brake to lock rotation of the disc hub during an overload condition.

Abstract: A winch includes a direct current reversible motor operable to drive a gear train to wind or unwind cable from a drum and also includes first and second clutch mechanisms in the gear train that provide respectively (1) internal loading of the winch to prohibit undesirable unwinding of cable and (2) infinite clutch control between free wheeling operation and direct gear train drive of the winch. The first clutch mechanism is a sprag clutch which is operated against a brake load built into the winch. The second clutch mechanism includes clutch plates which are engaged proportional to the force of a thrust bearing controlled by a manually operated handle.