Abstract: A system has a hoist system to lift a payload to a position adjacent to a ceiling of a room Image sensor systems collect visual data and payload depth data within the payload and ambient depth data within the room. A controller is connected to the hoist system and the image sensor systems. The controller is configured to control the motion of the hoist system. The motion of the hoist system is controlled in part by the ambient depth data from the room.

Abstract: A system has a hoist system to lift a payload to a position adjacent to a ceiling of a room. Image sensor systems collect visual data and payload depth data within the payload and ambient depth data within the room. A controller is connected to the hoist system and the image sensor systems. The controller is configured to control the motion of the hoist system. The motion of the hoist system is controlled in part by the ambient depth data from the room.

Abstract: A middle-drive type elevator has a lift car, tractor, wire rope, guide pulley and counterweight device. The tractor is installed between the lift car and guide pulley. Both the tractor and guide pulley are disposed above the lift car. The tractor is located below the guide pulley. One end of the wire rope connects to the top of the counterweight device, and the other end connects to the top of the lift car after passing through the guide pulley and a traction wheel on the tractor successively. To make the tractor arranged in the middle, the guide pulley bears the majority of the weight of the lift car and counterweight device, while the tractor only bears the minority of the weight of the lift car and counterweight device. It can effectively reduce the load borne by the tractor and greatly improve the service life of the tractor.

Abstract: An elevator includes a first elevator unit vertically movable in a hoistway; a second elevator unit vertically movable in a hoistway; a suspension roping including one or more belt-shaped suspension ropes interconnecting the first elevator unit and the second elevator unit; a drive wheel for moving said one or more belt-shaped suspension ropes; a plurality of cambered diverting wheels; said one or more belt-shaped suspension ropes each passing around the drive wheel and comprising consecutively a first rope section extending between the drive wheel and the first elevator unit; and a second rope section extending between the drive wheel and the second elevator unit wherein both rope sections diverge from the drive wheel towards the same lateral side thereof, the first rope section passing over a first cambered diverting wheel, in particular resting against a cambered circumferential surface area thereof, and therefrom down to the first elevator unit, and the second rope section passing over a second cambered d

Abstract: An elevator arrangement for an elevator includes a hoisting machine and a maintenance panel. The hoisting machine is arranged in an elevator hoistway, and configured to move an elevator car within the elevator hoistway via a hoisting rope arrangement. The maintenance panel includes components for at least one of control and service of at least one operation of the elevator arrangement. The maintenance panel is configured to slide out from a landing wall into a landing doorway of the elevator arrangement.

Abstract: An elevator rescue system for moving an elevator car to a disembarkation position in a rescue operation includes a rescue device (16) coupled to a brake system (4) of an elevator, the rescue device (16) comprising a rescue power source (22), wherein the rescue device (16) is disposed near the brake system (4) of the elevator; an operation panel (26) comprising a manual rescue operation switch (28), the operation panel (26) being disposed remotely from the rescue device (16); and a rescue operation signal transmission path (32) between the rescue device (16) and the operation panel (26).

Abstract: A life saving implement includes a prime motor assembly, a winding drum installing in the prime motor assembly to wind a wire rope, a braking drum installed on a side of the winding drum to control an RPM of the winding drum, a braking unit installed on a lower portion of the braking drum to control an RPM of the braking drum, a speed reduction unit installed on an upper portion of the braking drum to gradually reduce the RPM of the winding drum until the winding drum stops, and a passenger vehicle moving by the rotations of the winding drum and the braking drum.

Abstract: A motor provided with a secondary driving system including: a casing; a dented wheel permanently rotating during the normal operation of the motor together with the rotor inside the casing; an endless screw that can be brought into a clutch engagement position in which the screw meshes with the dented wheel and in which the rotation of the screw drives the dented wheel in a non-reversible manner and that can be removed from said position in order to allow the normal operation of the motor; a driving member for manually rotating the endless screw, the driving member rotating about the same rotation axis as the endless screw and rotating the latter by direct engagement

Abstract: An elevator evacuation apparatus is described, which enables a person(s) trapped in a stopped elevator car to pull a emergency cable outside a car window to activate a cam based pulley and gear mechanism which in turn intermittently releases and actuates a brake, thereby slowly lowering the stopped car until arriving at a correct floor. A number of embodiments are possible.

Abstract: An elevator escape arrangement includes a hinged window on a car; an escape rope passed by the window; a spring biased linking mechanism interconnected the window and a door; and a drive assembly including a first shaft, a detent block on the first shaft and between two brake bars, a cam-like member engaged with a drive sheave, a pulley on the first shaft with the escape rope run, a first gear on the first shaft, a second gear meshed with the first gear, and a second shaft passed through the second gear and the cam-like member. In case of emergency with the car stuck between two floors, the car and a counterweight balanced, and the brake activated, opening the window will cause the linking mechanism to lock the door, pulling the escape rope will unbalance and move the car, and closing the window will unlock the door for escape therethrough.

Abstract: A storage facility has a frame having a pair of first and second opposed parallel spaced apart elongated frame elements. The frame members each include means for attaching the frame to a horizontal ceiling. A cable support element is positioned at each end of each frame member. An elongated rotatable shaft has a first end connected to an intermediate location on the first frame member, and a second end connected to an intermediate location on the first frame member. A drive mechanism is connected to the shaft to control the rotational position of the shaft. A number of cable portions each have a first end secured to a respective end portion of the shaft. Each cable portion has an intermediate portion received by a respective cable support member, and a free end extending downwardly from the support member. A platform is connected to and supported by the free ends of the cables, and operates to elevate or lower in response to rotation of the shaft by the drive mechanism.

Abstract: An emergency escape apparatus for elevator is disclosed. In response to power outage manually pulling an actuation rope will pivot a pivot bar counterclockwise to rotate front and rear cams, press front and rear cams onto front and rear actuation members respectively, lower a pinion to be in mesh with a gear on a front of a drive sheave, press pressing rollers onto hoist ropes, activate a bar member to deactivate a brake, close a switch, and activate a backup motor to turn the pinion and the drive sheave through the gear, thereby lowering a car until a safe floor is reached. In another operation speeding the car will automatically enable an electromagnetic actuator to pull the actuation rope and activate a main motor to lower the car.

Abstract: An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected pulley set installed on the top of the carriage, a rotary wheel installed in the carriage and a steel rope. The steel rope connects the first series connected pulley set, the second series connected pulley set and the rotary wheel, so that the gravity load of one pulley set can belowered to decrease the pulling force of the steel rope to enhance the safety of the elevator.

Abstract: An underdeck pontoon lift system for supporting pontoons of various sizes in a stable manner. The underdeck pontoon lift system includes a base structure, a plurality of front lifting jacks and a rear lifting jack pivotally attached to the base structure, a support bed pivotally attached to the lifting jacks, a front structure extending from the base structure, and an elevating unit for manipulating the lifting jacks. The lifting jacks preferably have an inverted U-shaped base member with a pair of support members extending upwardly, where the width of the support members is less than the width of the base member. The lifting jacks are preferably attached to cross members that extend between side members of the base structure. The support bed preferably has a rear tapered portion for assisting in the loading of a pontoon.

Abstract: Disclosed is a return mechanism for elevator escape device. The return mechanism mounted at a wall of a car and comprises a drive sheave, upper and lower secondary sheaves, a wheel coaxially disposed with the drive sheave and located on an inner wall of the car, a lever including a lower pivot end, a positioning bar, an upper end at the drive sheave, and a groove, a link having one end defined by the groove and a roller at the other end, a support for permitting the link to slide therethrough, a catch, and projecting return members. In a case of car failure, a trapped passenger is able to continuously rotate the wheel for escape in which the mechanism can automatically return to its original position by moving the link backward after the roller contacting the return member.

Abstract: A mast in a conventional stacker crane is configured to extend in a vertical direction. Accordingly, the mast is not sufficiently rigid, and may swing in a running direction during running or when the running operation is stopped. An attempt to increase the rigidity results in a thicker mast, thus increasing the size of the stacker crane. In order to solve this problem, a mast is extended vertically from a lower frame and a platform that elevates and lowers along the mast wherein a ladder is extended vertically at a position opposite to the mast across the platform in a direction in which the lower frame runs, and a top of the mast and a top of the ladder is connected together via an upper frame.

Abstract: Backup power device for an elevator comprises a brake including a brake controller and a manual brake rod, a damping assembly including a roller at one end of a lever, and a wheel having alternate recesses and risers, an electro-magnetic controller having a control rod, a pulley having a rope run through the manual brake rod and the control rod, an electro-magnetic brake actuator, and a backup power supply. A passenger trapped in the car can pull down the rope in case of the failure of the electro-magnetic controller, the electro-magnetic brake actuator, and the backup power supply as the lever turns to cause the roller to contact the recess or the riser. The lever moves intermittently to cause the manual brake rod to activate the brake controller for braking and releasing a motor shaft again in intervals. Eventually, the passenger can escape.

Abstract: An actuating device for an elevator having a gearless drive having a motor, a traction sheave over which support ropes are passed and a motor braking device is in the form of a hand drive adapted to be engaged with the motor shaft for emergency elevator operation with a handwheel for manual motor shaft activation. The hard drive may include a gear coupling the handwheel and an output coupling in the form of a grooved hub. The braking device of the elevator is mounted to a pedistal having a cover with an opening through which the hub may be inserted to engage the motor shaft.

Abstract: An emergency moving device of an elevator includes a reduction gear fixed on top of the car, several first gears coupled to a shaft of the reduction gear, a first connector releasably coupled to the car, a second connector affixed to the car and releasably coupled to the first connector, a fall-prevention device releasably coupling the first connector to the second connector, and chains respectively connected to the first connector and engaging the first gears; the first connector is coupled to steel ropes of the elevator used for vertically displacing the car member; when the car is stopped between floors by a power failure, the passengers press an emergency button to make the fall-prevention device uncouple the first connector from the second connector so that the car is allowed to move down relative to the first connector until it arrives at a next floor with the reduction gear reducing speed of the car.

Abstract: An auxiliary device for displacing a payload receptacle, which stands outside a station, into one of the stations. The auxiliary device includes a temporarily activatable brake release device for releasing the braking device and an auxiliary drive device for displacing the payload receptacle when the brake release device is activated. The brake release device and the auxiliary drive device are arranged in the uppermost region of the elevator shaft and are actuable by way of a crank rod linkage. The crank rod linkage includes a lower actuating end, which can be brought from a rest setting into a working setting. The crank rod linkage is coupled with a rod linkage extension, the vertical effective length of which corresponds with at least the vertical spacing of the walk areas of two adjacent stations.

Abstract: An emergency drive system for elevators allows manual raising and lowering of the elevator in an emergency condition when an emergency brake has been applied to a rotating member of the elevator drive system. A linkage element is pivotally mounted to the brake, and carries a manual drive member having a drag bearing and a pair of guide rollers. A drive line passes about the drive member, guide rollers and a hand crank. Operation of the hand crank creates a tensional imbalance in the drive line, pivots the linkage member to engage the manual drive member with the rotary member. The increased drag to crank rotation resulting from the engagement causes the linkage element to pivot about the manual drive member, backing the brake away from the rotating member and allowing the rotating member to be turned by the manual drive member. The device is self-regulating, permitting only sufficient release of the brake to cause a slow rotation of the rotating member and the elevator car motion.

Abstract: An actuating device for an elevator having a gearless drive having a motor, a traction sheave over which support ropes are passed and a motor braking device is in the form of a hand drive adapted to be engaged with the motor shaft for emergency elevator operation with a handwheel for manual motor shaft activation. The hard drive may include a gear coupling the handwheel and an output coupling in the form of a grooved hub. The braking device of the elevator is mounted to a pedistal having a cover with an opening through which the hub may be inserted to engage the motor shaft.

Abstract: A manual brake release control structure having a linking member cooperates with an escape and protection mechanism for an elevator to protect an emergently braked elevator cab against inertial slip during brake release. By pulling an escape pulling cable outside the cab with a normal force, the braked cab is released to move and rotate a rotary shaft of a driving motor of the elevator. The rotary shaft in rotating causes a cam connected thereto to rotate and thereby reciprocates the linking member up and down that in turn causes an actuating arm and a flexible long member to repeatedly release and depress a braking device of the elevator, so that the cab is intermittently braked and released to move upward or downward at a reduced safety speed.

Abstract: An emergency moving device of an elevator includes a main moving gear and a reduction gear, both disposed on the top of the elevator car. Chains are passed under a respective one of several gears connected to shafts of the reduction gear. The chains are connected to a first connector, which is disposed above the car, and is connected to steel ropes of the car. When a breakdown of the elevator causes the car to stop between two of the floors, the passengers can control an emergency power supply to activate. A fall prevention member to free the carriage from the first connector for permitting the carriage to move down relative to the first connector; the emergency power also activates a braking switch of the main gear for same to turn in order to drive the reduction gear and the gears connected to the chains for lowering the car.

Abstract: An emergency lifting or lowering device of an elevator includes a transmission toothed wheel fitted to a top of a passage receiving a carriage of the elevator. The transmission wheel has teeth locking into an adjacent one of several toothed wheels arranged in a low. The toothed wheels are each associated with a reeling member having first end portions of steel ropes of the elevator wound therearound. The emergency lifting or lowering device further has an emergency switch disposed in the carriage member, and electrically connected to an emergency power to activate the transmission wheel in order to lift or lower the carriage member to a nearest floor when a main motor of the elevator stops due to power failure.

Abstract: An elevator emergency escape device is activated by mechanical failure, power outage, an earthquake, fire, etc. When the device is triggered by a passenger breaking a cover over an emergency button and pressing the button, the device plays a voice message that informs all the passengers of the situation. The brake is released, and the elevator cab is aligned with the nearest floor, unless the situation dictates a predetermined floor at a different level. The elevator cab can be moved by backup electrical systems, or by manual operation. The device includes the voice message, a braille system for blind passengers, and a lifting device for handicapped persons.

Abstract: This mechanism is designed to provide motion and force while maintaining parallelism between a base structure and a movable structure. This is accomplished by opposed pairs of pivoting arms which are synchronized by a timing device which links an arm with the arm opposite to it and ensures that these arms move the same distance but in opposite directions. This mechanism will work in any spatial orientation. Applications of this mechanism include lift tables, adjustable work stations, vertically adjustable conveyors, and others.

Abstract: A wafer lift for lifting a series of vertically oriented wafers arranged parallel to one another in a cassette. The wafer lift includes a vertically movable ramp and a cassette guide positioned over the ramp. The ramp is raised to engage wafers in a cassette supported on the guide so that each wafer is lifted incrementally higher than the preceding wafer.

Abstract: The auxiliary device is needed when the elevator stands in the elevator shaft outside a station. The auxiliary device includes an auxiliary drive device for the payload receptacle. For sight-free observation of the auxiliary device there is arranged an image transmission device, which includes a sensor, a display device and a transfer path. The sensor serves for detection of images which illustrate a drive pulley coupled with the auxiliary drive device. The display device serves for visualization of the images detected by the sensor, and the transfer path serves for transmission of the images detected by the sensor to the display device.

Abstract: A method and equipment is provided to allow a stuck elevator lift cage to be moved in situations when the lift cage and passengers is in weight equalization with the lift counterweight. With the lift's safety brake disengaged and the lift drive unactuated, the drive brake is released and an additional force is applied to the lift cage from a source external to the lift drive to move the lift cage to a position for passenger evacuation. The additional force may be applied through a cable pull connected to the limiter cable of the elevator's speed monitor system.

Abstract: In a maintenance driving control apparatus of an elevator, switches and other components operated at the time of maintenance are separated from a control panel and combined in a driving operation panel. A maintenance operation panel having this driving operation panel and at least one of a brake release device for remote operation, a meter for indicating a voltage of a speed generator, and car position confirmation unit utilizing movement of a rope or some other member is provided in the vicinity of an elevator hall. The maintenance driving control apparatus enables maintenance operations without directly operating the control panel or a hoisting machine.

Abstract: An exterior emergency escape system for use on a multi-storied building that includes an escape module for holding people escaping from the multi-storied building and for moving along the exterior of the multi-storied building, cables for suspending the escape module from the cornice of the roof, and apparatus for moving the escape module vertically along the exterior of the multi-storied building. In one embodiment, the apparatus is attached to the cornice of the building, and in another embodiment, the apparatus is attached to the escape module.

Abstract: An auxiliary device for displacing a payload receptacle, which stands outside a station, into one of the stations. The auxiliary device includes a temporarily activatable brake release device for releasing the braking device and an auxiliary drive device for displacing the payload receptacle when the brake release device is activated. The brake release device and the auxiliary drive device are arranged in the uppermost region of the elevator shaft and are actuable by way of a crank rod linkage. The crank rod linkage includes a lower actuating end, which can be brought from a rest setting into a working setting. The crank rod linkage is coupled with a rod linkage extension, the vertical effective length of which corresponds with at least the vertical spacing of the walk areas of two adjacent stations.

Abstract: An emergency release device for an elevator for persons that includes manually operable drive elements, by which the elevator cage can be moved by way of the elevator drive. The device further includes operating elements by which an operative connection with the elevator drive can be produced and the brake at the elevator drive released. A crank device, a flexible shaft and a switchable crown wheel gear transmission are present as drive elements. The switching or coupling in of the crown wheel gear transmission takes place via a handle with a toggle joint mechanism, a cable pull and an engaging fork. A handle for a remotely actuable brake release by way of a cable pull is present at the crank device.

Abstract: A storage platform and lift apparatus comprises a plurality of platforms; four cables; a plurality of elongated brace members; four elongated vertical members, each having a plurality of apertures extending therethrough; and a drive axle. A pulley wheel is rotatably coupled to two vertical members, while the other two vertical members support a drive axle which contains the four cables. A plurality of brace members support the vertical members in an upright, stable position. Upper and lower gear assemblies, in combination with the four cables extending outwardly away from the drive axle and coupled to the platforms, provide means to raise and lower the platforms to any desired height for either short- and long-term storage of machinery, equipment, and the alike.

Abstract: An elevator is provided with an emergency escape device consisting of a pull cable capable of bringing about the disengagement of a brake with a transmission shaft of a planetary deceleration motor, so as to actuate an action wheel to displace axially. A worm rod is actuated by an action cable such that the worm rod drives a worm wheel unidirectionally, thereby resulting in the actuation of the action wheel by the transmission wheel. The transmission shaft is so linked that the cable wheel is actuated to cause the elevator cab to ascend or descend slowly to reach a safe level to enable the elevator passengers to escape.

Abstract: A wafer lift for lifting a series of vertically oriented wafers arranged parallel to one another in a cassette. The wafer lift comprises a lift plate and an actuator mechanism for raising the lift plate. The lift plate has a contact surface for engaging the edge of each of the wafers. The contact surface extends upward at a predetermined angle so that, when the lift plate is raised and the contact surface engages the edges of the wafers, each wafer is lifted incrementally higher than the preceding wafer. The actuator mechanism includes a bell crank rotatable about a pivotal axis for transforming rotational motion into translational motion. The bell crank has first and second crank arms that extend radially from the pivotal axis and an arcuate member that extends circumferentially between and joining the crank arms. Thus, the arcuate member forms the circumferential perimeter of the bell crank.

Abstract: A manually activated elevator braking release including an actuating element placed away from the brake and a mechanical power transmission system for transmitting releasing power from the actuator to a brake element. The actuator is placed on a landing and a window is provided near the actuator so that an operator can observe movement of the hoisting ropes and/or traction sheave. Arrival of the elevator car at one of the landing zones is indicated in a manner allowing it to be perceived from a position near the actuator.

Abstract: An elevator escape device comprises a pressure increasing apparatus and a pressure decreasing apparatus, which are located in the emergency window of an elevator cab and can be operated manually to activate an oil pressure cylinder of the oil pressure mechanism to drive an oil pressure cylinder of the oil pressure mechanism to drive the elevator cab to a desired floor at such time when the elevator cab is diabled by an incident, such as a fire, a power outage, and so forth.

Abstract: An elevator emergency escape device provided with a brake fastened to the motor shaft and located in the mechanical control room. An action wheel is mounted on the motor shaft such that the action wheel is engaged with a transmission wheel provided with an action cable. An action rod that regulates the action of the brake is provided with a force applying device including a force output member that regulates the braking action of the brake through the action rod. The release of the braking system enables the elevator cab to be operated manually by pulling the action cable.

Abstract: An elevator is provided with an auxiliary escape device consisting of a manually-operated compression-decompression apparatus located at an emergency window of the elevator cab. The compression-decompression apparatus has a fluid pipe and a compression or decompression valve which is fastened at one end thereof with an oil pressure mechanism. In the event of an accident or power outage causing the elevator to incapacitate, the compression-decompression apparatus is exerted on by the pressure of a person's hand so as to actuate the compression or decompression valve, thereby causing the oil pressure cylinder to move up or down to drive the elevator cab upwards or downwards to a desired floor where the trapped passengers can escape.

Abstract: An overhead storage lift assembly comprises first and second brace members each having a vertical and a horizontal segment. Pulley wheel is coupled at the end of each horizontal segment. A platform is being raised and lowered by four cables attached to its four corners. The first and second cables are threaded within the horizontal segment of the first brace member. The third and fourth cables are threaded through an aperture in the first brace member and positioned within the horizontal segment of the second brace member. A crank case with a worm drive shaft meshing with a drive gear is used for winding the cables in order to raised or lowered the platform.

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. 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. 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: An elevator with electric/manual dual driving-mode including a cab suspended from a beam at the top of an elevator well by a host cable, a winch mounted on the cab and driven by a reversible motor to take up/let off the host cable so as to lift/lower the cab, and a manual drive means for turning the reversible motor in driving the winch manually by a person in the cab in an emergency case, wherein the manual drive means includes a gear shaft supported on a bearing in a support outside the cab, clutch means controlled by a clutch switch to couple said gear shaft to the motor shaft of said reversible motor, a hand wheel disposed inside the cab and coupled to the gear shaft by a chain transmission mechanism and turned to rotate the reversible motor through the gear shaft, and a clutch switch controlled to move the clutch means into engagement with the gear shaft and a rear extension shaft of the reversible motor, for permitting the reversible motor to be turned with the gear shaft.

Abstract: An auxiliary device for operating a disabled elevator in case of emergency includes a pull cable and an action cable by which the disabled elevator can be raised or lowered to reach a desired floor. The pull cable is fastened at the top end thereof with one end of an application rod which is fastened pivotally at another end thereof in a control room located at the top of an elevator shaft. As the pull cable is pulled, an action rod is exerted on by the pressure of the application rod to disable the braking device so as to permit the elevator cab to be raised or lowered by a transmission box when the action cable is actuated.

Abstract: An elevator emergency device comprises a motor transmission spindle brake provided with an action rod having horizontally a application rod capable of swinging and having a pull cable fastened thereto, said application rod provided at a midsegment thereof with a rotary wheel having an action cable woung thereon such that one end of said action cable is fastened with an idle wheel. When the pull cable is pulled, the application rod is activated to cause the rotation of the action wheel as well as the disengagement of the brake shoe with the motor transmission spindle, thereby bringing about the operation of the elevator cab lifting and descending cable. The transmission wheel and the rotary wheel are provided with a speed-limiting friction wheel for regulating the rotational speed of the action wheel so as to prevent the elevator cab lifting and descending cable from moving the elevator cab too rapidly.

Abstract: A water lift for lifting a series of vertically oriented wafers arranged parallel to one another in a cassette. The wafer lift comprises a lift plate and an actuator mechanism for raising the lift plate. The lift plate has a contact surface for engaging the edge of each of the wafers. The a contact surface extends upward at a predetermined angle so that, when the lift plate is raised and contact surface engages the edges of the wafers, each wafer is lifted incrementally higher than the preceding wafer. The actuator mechanism includes a bell crank rotatable about a pivotal axis for transforming rotational motion into translational motion. The bell crank has first and second crank arms that extend radially from the pivotal axis and an arcuate member that extends circumferentially between and joining the crank arms. Thus, the arcuate member forms the circumferential perimeter of the bell crank.

Abstract: The invention comprises an autonomous power source and damper, a manual command in the lift cabin, a coupler for coupling the safety device to the shaft of the lift equipment, a displacement speed self-regulating device for the lift cabin, a limiting device for levelling the lift cabin to the floor and cycle end with brake blocking and deactivation of the safety device.

Abstract: The invention relates to a safety device for elevators, where an elevator turning wheel is connected to an elevator drive system comprised of an electric motor. The turning wheel is also coupled to a turn handle to move the elevator in the event of a power outage. The handle is also disposed in a holder containing a switch for connecting or disconnecting the supply of electric current to the elevator drive system.

Abstract: A height adjustable tanker access platform system having a fixed frame member, an access platform operatively mounted on the fixed frame member for vertical movement with respect to the fixed frame member, and a drive mechanism operatively engaged between the fixed frame member and the access platform so as to provide for raising and lowering of the access platform, is disclosed. The drive mechanism comprises a drive means securely mounted on a fixed frame member, a drive pulley operatively connected to the drive motor to permit selective driven rotation of the drive pulley about a first rotational axis, and a main idler pulley rotatably mounted on the access platform for rotation about a second rotational axis. A drive cable is securely attached at an anchored end to the fixed frame member and securely attached at an opposite remote end to a vertically moveable counterweight.