Abstract: According to the present disclosure, a projector lift is provided to raise and lower a projector from the ceiling. The projector lift includes a first mount normally coupled to the ceiling, a second mount supporting the projector, a driver configured to raise and lower the second mount and projector, and a stabilizer extending between the first and second mounts.

Abstract: The invention relates to a hoisting drive comprising several linear motors, as well as to a linear slide track with a carriage. All primary parts and all secondary parts of the linear motors are mounted on the carriage. The hoisting drive comprises a closed housing which is cooled by a coolant and into which the linear slide track is integrated together with the linear motors. Those primary parts and secondary parts which are not mounted on the carriage are mounted on the housing. A cylindrical hoisting rod is introduced into the housing in a sealed manner and mechanically joined to the carriage. This hoisting drive is especially suitable for use in the iron and steel industry as replacement for large cylinders.

Abstract: In order to increase winch safety, power and utility method for using a winch and a method for mounting a winch based on ensuring that the force exerted by the winch cable on the drum rotation axis and the drum rotation axis remains perpendicular throughout winch operation are disclosed. An improved winch mount which allows the user of the winch to ensure that the force exerted by the winch cable on the drum rotation axis and the drum rotation axis remains perpendicular throughout winch operation is disclosed.

Abstract: A motor winch, which is suitable as a sheet or halyard winch (11) for sailing yachts, etc., has an integrated electric or hydraulic drive. The motor (52) is integrated into the winch in such a way that it is located within the winch body and in particular within the winch drum (16). The motor brings about rotation of the winch drum through a multistage gear located in the winch foot (22), optionally assisted by an epicyclic gear (54). A manual operation with a winch crank is made possible by a winch crank nut (32) in the winch head (29). The manual driving shaft is past the somewhat eccentrically positioned motor. A reverse rotation or veering function can be provided in which following the disconnection of the drum locking mechanism, the motor is rotated back in braking manner with a controlled speed.

Abstract: A drive unit has a traction sheave mounted on an end of a drive shaft supported by a bearing that is mounted on an extension of a bearing plate that is part of the motor casing. The traction sheave has an extension that serves as a brake drum. Mounted between the traction sheave and the casing, the brake drum together with first brake arms, second brake arms, first electromagnets, second electromagnets, first compression springs and second compression springs form the braking device of the drive unit. On a top of the bearing plate is a first arm linkage and at the bottom of the bearing plate is a second arm linkage. The force of the first compression spring is transmitted to the brake drum by the first brake arm, the required friction force on the brake drum being generated by a first brake lining mounted on a first brake shoe. The friction force on the second half of the brake is generated analogously.

Abstract: A pendant switch assembly for controlling a hoist, includes a transmitter mounted to a housing for wireless transmission of control signals to a receiver mounted remotely with respect to the housing and operatively connected to a power controller of a drive of the hoist. A plurality of control elements is arranged in the housing and actuated by a plurality of actuators from outside for delivering control signals for the power controller to the transmitter. Secured to the hoist is a traction member which is guided downwards, with a receptacle secured to a lower end of the traction member. The housing is securely attachable to the receptacle by plugging in the housing into the receptacle, and detachable from the receptacle by withdrawal thereof. Electric energy is supplied to the control elements and the transmitter by a power source which is also accommodated in the housing.

Abstract: In a drum winding unit 10, a cylindrical drum 18 with a wire 20 wound is supported by paired supports 14 and 16 fixed to a base structure 12 such that the drum 18 freely rotates about a central axis of the drum 18. A drive unit 32 for rotating the drum 18 is disposed inside the drum 18. The unit 10 is designed so as to insert the drive unit 32 into and extract it from the drum 18 while keeping the drum 18 and the supports 14 and 16 as they are at their operating positions.

Abstract: A device for controlling a motor-driven hoist, includes a housing and a control unit supplied with electric energy from a power source and secured to the housing. The control unit has control elements operable from outside the housing between an inactive ready position and an active position for delivering control signals. A transmitter is supplied with electric energy from the power source and receives the control signals from the control unit for wireless transmission of the control signals to a receiver, which is operatively connected to a power controller of the drive of a motor-driven hoist. An activation switch is so operatively connected to the power source that actuation of a control element initiates a supply of electric energy from the power source, whereas the supply of electric energy from the power source is cut, when the control elements occupy their ready position.

Abstract: The present invention provides a portable pulling apparatus suitable for mounting in an exit pit during installation of a pipeline. A portable pulling apparatus of the invention includes an elongated stake having a lower end portion configured for insertion into the ground and an upper end portion. A winch including a pulling cable is mounted on the upper end portion of the stake by a suitable fixture. The winch can then operate to exert a horizontal pulling force on a cable and is secured against movement when the lower end portion of the stake is inserted into the ground. Such a pulling apparatus can be used in a method of installing an underground pipe according to the invention.

Abstract: A winch drive comprising a portable power tool having a bit (4) shaped to fit the drive socket (11) at the top of a winch (12). The power tool includes a self-tailing device (14) and is preferably battery driven.

Abstract: A winch including a casing for accommodating an electric motor, a gearbox and a roller for winding and unwinding a traction member. In order to provide a cost-effective flat winch which can be transported by a single person and used universally, in particular for the domestic sector, the casing has a box-like configuration to exhibit a shape and size of a suitcase or attaché case, with the casing having opposite flat outer sides, with one outer side having attached thereon a suspension member, and the other outer side being formed with an opening for passage of the traction member. The electric motor, the gearbox and the roller are arranged in the casing and extend in a common plane, with the casing including a handle to allow transport of the winch by a person. The electric motor may be designed as a universal motor, and connected via a belt drive to the gearbox which is designed as a self-locking worm drive.

Abstract: Winch apparatus for raising and holding a rolling steel door includes a wheeled base with telescoping members extending upwardly from the base. A hand cranked winch raises and lowers the telescoping members, while a reversible electric motor is used to power a separate winch for raising and lowering a load secured to an arm extending outwardly from an innermost telescoping member. The arm is disposed against a building when the apparatus is in position to raise the rolling steel door for its installation.

Abstract: An elevator drive for a rope traction elevator, which is intended for installation in an elevator hoistway, includes of a gear with a traction sheave, a motor in an upright position on top of the gear, a brake and suspension elements which are slung over the traction sheave and provide vertical motion for an elevator car with a counterweight. The motor and the gear are inclined at an angle to the vertical. With this slightly tilted arrangement no part of the motor extends beyond the horizontal boundary of the gear. Furthermore, the brake is a part of the gear and non-detachably fastened to it, which makes it possible to mount the motor on the gear, and to dismount it therefrom, without difficulty.

Abstract: A portable drive assembly for driving a chain hoist which includes a drive sheave having a drive shaft extending therefrom that is adapted to be connected to a portable power drill. The drive sheave includes a chain cavity extending around the same for engaging and driving the drive chain associated with a manual chain hoist. To stabilize the portable drive assembly during operation, a stirrup extends from the assembly and the operator is able to stabilize the portable drive assembly by projecting his or her foot into the stirrup. Thus the chain hoist is driven, in either direction, by simply actuating the power drill and holding the portable drive assembly such that the drive sheave continuously engages a lower run of the drive chain.

Abstract: In a hoisting winch, a winding drum is arranged in an outer peripheral portion of a motor portion, a braking unit and an encoder are arranged on one end side of a rotor axis of the motor portion, an internal gear is fitted to an inner diameter area of the winding drum, a reduction mechanism in which planet gears are arranged between a sun gear and the internal gear is provided, the reduction mechanism, the braking unit, and the encoder are arranged in a coaxial fashion, and a wire rope fitting groove is provided on the winding drum on the braking unit side.

Abstract: The present invention provides a processing system for coupling to an infrastructure of a building. The processing system comprises a processor having a plurality of processing system elements. A tray is coupled to the processor and the tray has at least one pivotal attachment member coupled to an articulating arm. A motor is coupled to a portion of the infrastructure and the articulating arm so that the motor may move the processing system between a first position and a second position.

Abstract: An agricultural or floricultural elevation system is provided for lifting and supporting agricultural or floricultural products or containers at a desired elevation above the ground. The system includes a spool shaft and a drive assembly. The drive assembly is operable from a location below the spool shaft, and is adapted to selectively rotate the spool shaft axially in a first direction and a second direction. The elevation system further includes a plurality of first lines having a first end and a second end. The first ends are secured to the spool shaft so that when the spool shaft is rotated in the first and second directions, the first lines are wound and unwound, respectively, around the spool shaft. The system also includes a hanger rod that is secured to the second ends of the first lines to suspend from the spool shaft. In operation, a user secures agricultural or floricultural products or containers to the hanger rod.

Abstract: The system and method for use with a drawworks having a rotatable drum on which a line is wound, wherein the drawworks and the line are used for facilitating movement of a load suspended on the line, includes a drawworks control system for monitoring and controlling the drawworks. A brake arrangement is connected to the rotatable drum for limiting the rotation of the rotatable drum and at least one electrical motor is connected to the rotatable drum for driving the rotatable drum. A load signal representative of the load on the line is produced and a calculated torque value based on the load signal and electrical motor capacity is provided. The drawworks control system provides a signal representative of the calculated torque value to the electrical motor wherein pre-torquing is generated in the electrical motor in response to the signal.

Abstract: An electrically powered hoisting system is operated by seating a line attached to the load to be hoisted in a groove formed between two sheave components and activating the electrical drive motor to rotate the sheave assembly. Voltage for the electrical drive motor is provided by an on-board 12 volt battery and voltage to the drive motor is controlled by means of a switch device. The groove formed by the sheave components has a resilient gripping surface that provides a firm line gripping action and hands-free and self-tailing operation. A davit, davit mounting brackets, and a flexible mounting assembly for mounting the powerhead assembly to a support are also disclosed.

Abstract: A portable apparatus for pulling well pipe upwardly through a well includes a well pipe hauling head which incorporates two opposed, inwardly tapering discs which are adapted to frictionally engage well pipe therein by only a quarter-turn engagement with the pipe. This allows for easy manual engagement and disengagement of the well pipe with the hauling head. The hauler head is mounted with suitable mounting apparatus permitting the hauler head to be freely rotatable in a supported position adjacent a well. The apparatus may be provided with a reduction gear box so that it may be actuated by a portable power drill.

Abstract: A driving arrangement for a motorized fishing reel has a first or driving gear, a second larger gear, a third or pinion gear, and a fourth gear. The driving gear is mounted to and driven by a shaft of a motor. The second gear is meshed with and driven by the driving gear. The pinion gear is meshed with and driven by the second gear. The fourth gear is meshed with and driven by the pinion gear. A clutch arrangement including a cam clicker input drive and a cam plate output drive is disposed such that the cam clicker positively engages and is driven by the fourth gear for rotation in one direction when the motor is actuated and the cam clicker yields from engagement with the fourth gear when the clutch arrangement rotates in that one direction relative to the fourth gear. A reel shaft is connected to the cam plate such that the reel shaft and the cam plate rotate with each other in that one direction.

Abstract: A push-pull chain garage door operator system includes a drive module and an elongated guide rail for a push-pull chain connected to a carriage assembly mounted on the guide rail. The chain is engaged with a sprocket mounted on a generally rectangular plate-like molded plastic support member which includes a serpentine idle chain storage slot formed therein. The support member is releasably connected to a stamped metal frame plate for covering the storage slot and supporting the drive module. The bottomwall of the support member supports a right angle speed reduction drive unit connected to a drive motor retained in a cradle formed by an integral boss on the support member. The motor and a starting capacitor therefor are retained in respective cradle portions of the boss by a removable retaining strap. A control circuit board is mounted on the underside of the support member and a two-part shroud for the operator mechanism is releasably secured to the frame plate.

Abstract: In an electric chain hoist, there is a slipping clutch in the drive line which connects the electric motor to the chain sprocket, the slipping clutch acting as an overload safeguard. A holding brake is also provided to hold the drive line in the braked state when the motor is switched off. The brake exerts its braking action primarily on that part of the drive line which lies between the slipping clutch and the chain sprocket. To prevent the slipping clutch from entering the slipping state when the motor is switched on before the brake has been released to a sufficient extent, the brake is designed in such a way that it acts on both parts of the drive line.

Abstract: A power option is provided for a manually-operated material lift that employs a telescoping mast system which is extended or retracted by a winch. In one embodiment a reversible electric motor is connected to the winch via two-way reduction gearing that remains in the drive train during manual operation and requires no clutches or disconnect means. In a second embodiment a crankshaft that operates the winch is provided with slide couplings that either engage the manual operating handles or release the handles and engage the motorized drive. The power option is initiated by selecting the position of a reversing switch that controls the motor, and closing an on/off switch which energizes the motor for rotation in the selected direction. When the on/off switch is open, the lift may be manually operated in the conventional manner.

Abstract: A powered winch driver is disclosed for operating a winch having a rotatable, typically ratcheted capstan including a socket for receiving a star stub. The driver comprises: a water proof housing having an upper plate including a socket for receiving a manual winch handle and a lower body having an opening therethrough; a battery powered motor connected by an on/off switch to a rechargeable battery contained by the water proof housing; a rotatable shaft mounted for rotation relative to the water proof housing and having a star stub extending through the opening in the lower body of the water proof housing; a water tight seal for sealing the opening in the lower body through which the rotatable shaft extends; and a drive unit connecting the battery powered motor to the rotatable shaft for rotatably driving the shaft when the motor is operated and for locking the shaft against rotation when the motor is stationary.

Abstract: A chain hoist contains a slipping overload clutch in the drive line which connects the electric motor to the chain sprocket. This slipping clutch has two clutch halves which are in frictional engagement with one another and are preloaded into frictional engagement with one another by a spring. A holding brake is furthermore provided and this holding brake acts against the clutch disks so as to increase the frictional grip between the clutch disks in the applied state. This ensures that when the hoist is started and the disengagement of the brake is delayed, the slipping clutch does not enter the slipping state.

Abstract: A system for retreiving undersea salvage items from a sub-surface location. he system includes a flotation unit, winch, related remote control unit and a power supply mounted thereon, a winch, related remote control unit, and a power supply mounted on the support element. A cable or equivalent secured to the winch includes a retrieval harness or alternative means such as a shackle for securing the salvage item to the winch. A tether connects the system to a remote salvage tender on the surface. An adjustable and automatic stop is provided by the control unit to prevent certain types of salvage from rising beyond a desired depth or breaching the surface. Portions of the system used in magnetic mine retrieval are fabricated of non-magnetic material.

Abstract: A compact, motorized hoist including a U-shaped member, the open end of which is rigidly fastened to a first leg of an L-shaped member. The support panel leg of the L-shaped member extends across the open side of the U-shaped member. An electric motor is rigidly fastened to the support panel leg of the L-shaped member and is drivingly linked to a worm gear shaft extending through a gap between the support panel leg of the L-shaped member and the open side of the U-shaped member. The worm gear shaft is journalled to the L-shaped member. The worm gear drives a first gear having an axle mounted perpendicular to the first leg of the L-shaped member, and the closed end of the U-shaped member. A cable is wound around a reel rigidly mounted to the axle. The L-shaped member is removably fastened to the U-shaped member, and one leg of the U-shaped member is removably fastened to a pier member.

Abstract: A time-based control system (10) for controlling a process incorporating external devices using a predefined response profile (13). The response profile (13) is continuously compared to the actual response of the controlled device (11). A plurality of sensor modules (24) is used to monitor the actual magnitude and direction of change of selected quantities during the process. If the response it outside the user-defined maximum allowable error, appropriate measures are taken to either correct the error, halt the process, or proceed with the process in a time-based mode. The proper response and detection of errors of the controlled device (11) is independent of load, rate, temperature and other external stimuli. The time-based control system (10) can detect errors caused by higher level equipment such as the sensor modules (24). Thus, the time-based control system (10) can detect when any portion of the time-based control system (10) or the controlled device (11) malfunctions.

Abstract: A stirrup device is provided which has a mounting piece to secure a saddle, a large vehicle, or another apparatus. A drum is rotatably attached to the mounting piece. A pulley system has an attached stirrup and is operably connected to the drum for lifting and lowering the stirrup. A cable operably connects the pulley system to the drum. The drum is adapted to receive a force to rotate the drum such that the stirrup is raised or lowered depending upon the direction of rotation of the drum. The drum may be adapted to receive a cordless electric drill for rotation of the drum. Alternatively, the drum may be secured to an electric motor or the like for imparting a rotating force on the drum.

Abstract: A method of stopping of a winding machine that hoists and lowers an object prevents abrasion of the electromagnetic brake and the descent of load. The winding machine, which winches a load up or down in response to a torque command T.sub.REF to the electric motor M produced by the speed controller ASR in accordance with the a speed command N.sub.REF generated by the speed command generation circuit NRC, operates at the stopping of the machine to cease the motor control if the motor speed N.sub.FB is zero after the torque command to the motor M is brought to zero for a predetermined length of time following the issuance of a brake command to the electromagnetic brake which is coupled directly to the motor M.

Abstract: An adaptor for allowing the pulling of a chain using a hand-held power tool. The adaptor has a gearbox housing a speed reduction gear train. An input shaft projects from the back of the gearbox and an output shaft projects from the front of the gearbox. The input shaft is adapted to be coupled to the output shaft of a hand-held power grinder. A sprocket specially designed to engage an ordinary oval link chain, is mounted on the output shaft. A sprocket housing having a movable cover is attached to the front of the gearbox. The sprocket housing has a movable cover which can be moved between an open and a closed position. The cover acts to maintain the chain in engagement with the sprocket when the chain is mounted to the sprocket and the cover is in the closed position, and the cover allows the chain to be removed from or mounted to the sprocket when the cover is in the open position.

Abstract: An electric hoist with motor-speed-regulated lifting speed, in particular an electric chain hoist, including an electric motor, a gear unit, and a wheel around which the hoisting chain is looped. A load-carrying device is arranged on the hoisting chain. The motor, gear unit and wheel are connected with one another in a drive connection and the lifting speed is provided by an electric control unit for the electric motor, which control unit is connected to a manual control switch. In order to achieve suitable cooling while apportioning the space in an appropriate manner for the arrangement of all required components, the electric control unit, which has control electronics with speed sensing equipment, is arranged in an external protective housing fitted to the gear box.

Abstract: Driving machine for lifts. In this simply and compactly constructed driving machine, damages caused by axle sagging and deformations of teeth, which occur during peak loadings, of a transmission are avoided and for this purpose, in the drive unit of this invention the drive pulley is rotatably journalled on one end of a stationary axle, which in turn is fastened on a bearing block arranged on the base plate of a machine frame with the drive unit including a transmission, an electrical motor, a brake and a rotation transmitter being arranged co-axially overhung or cantilevered at the drive pulley and secured against rotation by two elastic torque stays attached to the machine frame, with adjustable damping elements installed in the torque stays enabling a load-moment-dependent deflection of the drive unit in the sense of rotation and thereby also providing a load measurement at the drive unit.

Abstract: A tree stand winch (10) for hoisting items from ground level up to a desired height within a tree or pole comprising a crank wheel (12) having both a hand knob (14) and a power tool adapter (16) mounted thereto for actuating a gear assembly (20). Crank wheel (12) is mounted to one surface of a support plate (28) and mounted to the opposite surface of the support plate (28) is a line spool (30) which rotates in response to the actuation of the gear assembly (20). Additionally, secured to the support plate (28) is a brake and drag mechanism (50) for providing variable resistance to the rotation of the line spool (30). The winch (10) is secured to a user's belt by an attachment mechanism (90) while the user ascends a tree or pole. Once positioned up the tree or pole, the user secures the winch (10) to the tree or pole by the attachment mechanism (90).

Abstract: A method and apparatus for docking a motorboat including providing boat docking apparatus with a length of cable, having a weight affixed to one end, and cable retrieving apparatus, having a second end of the cable adhering thereto. The boat is moved to within the length of cable, and the weight, with one end of the cable, is propelled to the boat. The cable is attached to the boat and the motor of the boat is operated into reverse sufficient to tighten the cable while a steering mechanism is operated, against the force of the cable, to align the boat with a boat trailer. The cable retrieving apparatus is activated to retrieve the cable and pull the boat to the trailer and the boat is hoisted into the trailer in a normal fashion.

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: An elastic hoist and traction apparatus in which a friction receiving surface is provided at a rotor of a motor, and an overload prevention device is provided at the reverse side to a load on a brake for stopping a driving shaft and between the motor shaft and the friction receiving surface of the rotor or between the motor shaft and the driving shaft, thereby solving the problem created in that the overload prevention device is provided at the load side of the brake.

Abstract: A remote controlled winch operable by a hand held remote control. The winch has a single piece drum that is reversibly driven by a drive motor through a planetary gear arrangement for winding cable onto the drum and unwinding cable off the drum. A remote control capable of handling the high amperage draw of the drive motor is provided to control power to and the rotative direction of the drive motor. The remote control has two switch arms that are connected to the motor leads with each of the switch arms normally biased to a ground connection. A manually operated mechanism is provided to selectively and independently switch (move) each of the switch arms from a ground connection to a connection with a power source to supply power to the motor and control the rotative direction of motor.

Abstract: A hoist for loads that includes an elongated upright support assembly and an elongated extending support assembly pivotally mounted to the upper end of the former. The free end of the elongated radially extending assembly being able to follow a curved path in a horizontal plane. An elastic cable is attached to a non-elastic cable that is wound in a spool assembly so that the equilibrium point for the tool or equipment load can be adjusted at a vertical point. The spool is driven by an electric motor that in turn is activated by the wireless transmission of signals for winding and unwinding. These signals are produced when the tension at the end of the elastic cable attached to the load falls outside a predetermined range.

Abstract: A hoist with a lifting device, by way of which a load suspension device connected with the lifting device via a traction mechanism can be raised and lowered, and with a control device which is arranged between the load suspension device and the traction mechanism and includes a housing with a handle for manipulating the load suspension device. Switching members are arranged in the housing for controlling the lifting device, and a high-strength connecting member is fastened in the housing, with the traction mechanism and the load suspension device being fastened to the connecting member. The housing is divided into a mechanical part with the handle for receiving an actuating mechanism for the switching members and into an electrical part for receiving the switching members with the connecting member being arranged between the mechanical part and the electrical part.

Abstract: A hoist machine provided with a driving member driven by a capacitor start single phase motor, which is provided with a governor and a switching device for turning a start capacitor on and off following operation of the governor. The switching device is provided with a switch control panel, which, when the driving member drives to hoist a load, maintains on-operation of the lowering side switch and turns off the hoisting side switch following the operation of the governor to thereby cut off energization to the start capacitor, and when in a lowering operation, maintains on-operation of the hoisting side switch and turns off the lowering side switch to thereby cut off energization of the start capacitor.

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 handle for rotating the capstan of a manual winch about its axis is disclosed. The handle includes a housing, a motor, a star stub for removably securing the handle to the capstan and rotating the capstan relative to the housing, a gear reduction unit for connecting the motor with the star stub and a handle for manually securing the housing to prevent rotation of the housing relative to the axis of the capstan.

Abstract: A winch includes a reversible electrical motor with output shaft which drives a drum through a drive mechanism with multiple sprockets and gears to take up and let out a cable. The output shaft is connected through a one-way bearing to a brake hub. The brake lining on a brake arm is spring biased into engagement with the hub and prevents reverse rotation of the output shaft unless an electrical switch actuator is moved to a reverse position, camming the brake arm out of braking relationship with the hub. The drive mechanism may also be powered manually in the forward direction. If free-wheeling of the drum is desired, a knob is rotated to disconnect a clutch in the drive mechanism.

Abstract: A remote control, ceiling mounted lifting device is provided for concealing, supporting and providing floor level access to audio visual objects such as color video/data projectors. The overall height of the lifting device is extremely shallow to allow the device to be mounted and concealed within the ceiling clearance area. The device has an outer frame with an open inner section. A support carriage is provided which is sized to fit and nest with the open inner section of the support framework. The carriage has an inverted U-shaped structure which allows the projector to be recessed upwardly within the confines of the carriage. A scissor-like stabilizer mechanism is mounted on each side of the carriage and support structure. These stabilizer mechanisms are located on the outer edges of the device to minimize the overall height of the device.

Abstract: A stationary patient lift can be used by individuals in their own homes to lift disabled and elderly individuals living with them. The lift has an electric hoist/winch for lifting the patients from a bed to a chair or wheelchair and back again to the bed. The lift is fixed to the rafters of a house. A cable hangs down through the ceiling of the house and the electric hoist hangs from the cable just below the ceiling. A chain or strap hangs down from the hoist mechanism to a sling for supporting the patient.

Abstract: A scaffold mounted hoist (20) is provided which mounts with an adapter (30) on a pin (91) extended upward from the scaffold. An electric motor driven transmission (42) causes a standard (40) to rotate relative to the adapter. A cable from an electric winch (50) on the standard is reeved through a pulley (48) on a boom (44) extending from the standard. The transmission and winch motors respond to receivers (56) in the hoist. Thus a load (28) attached to the cable can be lifted, lowered and swung circumferentially through commands from a hand held transmitter (24). An electric eye system (64) stops the load adjacent the boom. Timers (252, 253) stop the load when it nears, respectively, the ground and the scaffold floor (34).

Abstract: An image reading and recording apparatus such as an electronic blackboard includes a reading unit movable along a guide rail for reading information written on a board, a drive motor integral with the reading unit and operative to move the reading unit relative to the board, and a power transmission mechanism for transmitting a driving force of the drive motor to the reading unit so as to move the reading unit relatively to the board. The power transmission mechanism is composed of a pulley fixed to a drive shaft of the motor and a wire rope extending along the guide rail in a stretched condition and wound around the pulley by one turn. Upon rotation of the motor, the pulley rolls on and along the wire rope, thereby moving the reading unit relative to the board. Due to a large contact area provided between the pulley and the wire rope, the movement of the reading unit is highly reliable and hence the information on the board can be read with high accuracy.

Abstract: An automatic brake for vehicle winch that is automatically applied when the applied torque of the drive motor ceases and automatically released upon application of motor torque. The brake features brake pad segments that move radially outward against the interior of the drum to affect braking and retract radially inward to affect releasing of the brake. The pads have tapered ends that mate with opposed frusto-conical shoes. The brake utilizes rotation of a cam rotatable with respect to a cam follower in one direction to force one shoe toward the other to force the pads radially outward to engage the interior surface of the drum. Rotation of the cam with respect to the cam follower in the opposite direction releases the braking action. A wave spring is incorporated to eliminate chatter as the brake is applied and released. The configuration of the brake components provides a conductive path for the dissipation of heat generated by the braking action.