Abstract: A relative translation assembly operable with a drive mechanism. The relative translation assembly can have a fixed support member, a translatable member supported by the fixed support member, and a translation guide portion to facilitate translation of the translatable member relative to the fixed support member. The translation guide portion can have a fixed translation member and a movable translation member. The movable translation member can be configured to maintain preload on the fixed and movable translation members and accommodate thermal expansion. The drive mechanism can be configured to cause translation of the translatable member relative to the fixed support member.

Abstract: A dumpster handling device is disclosed for handling a first dumpster and a second dumpster comprises a lower support beam for supporting a first dumpster. A lower support beam, a first side frame and a second side frame define a lower dumpster holding channel. A first upper support beam and a second upper support beam define an upper dumpster holding channel. A dumpster lift vertically lifts the first dumpster from the lower dumpster holding channel to the upper dumpster holding channel. A beam lift pivots the lower support beam and the first dumpster. A lower hoist positions a second dumpster within the lower dumpster holding channel. A first telescoping support beam and a second telescoping support beam define an angled dumpster displacement channel. An upper hoist links with the first dumpster for displacing the first dumpster along the angled dumpster displacement channel.

Abstract: In an elevator installation an elevator cage is arranged to be movable along guide rails and the elevator cage is equipped with a brake system possibly with two safety brakes. The safety device is activated by way of control devices which can trigger the safety device from critical or non-critical events. The control devices further include a function for automatic resetting of the safety brake when an event, which is evaluated as non-critical, is indicated as a reason for triggering the safety brake. Resetting of the safety brake takes place through execution of pre-defined resetting steps of the elevator cage.

Abstract: A screw-driven elevation structure includes: a first rail and a second rail; a first screw nut assembly having a first screw and a first nut, the first screw having a top end fixedly connected to a fixing unit, the first nut moving along the first screw; a power device disposed at an elevator and having a first driving portion and a second driving portion, the first driving portion being fixedly connected to the first nut; a second screw nut assembly having a second screw and a second nut, the second screw having a top end fixedly connected to the second driving portion, the second nut moving along the second screw; and a moving body fixedly connected to the second nut and moving along with the second nut. It is feasible to drive the moving body to move, by controlling only the power device, thereby incurring low manufacturing and control costs.

Abstract: A screw-driven elevation structure includes: a first rail and a second rail; a first screw nut assembly having a first screw and a first nut, the first screw having a top end fixedly connected to a fixing unit, the first nut moving along the first screw; a power device disposed at an elevator and having a first driving portion and a second driving portion, the first driving portion being fixedly connected to the first nut; a second screw nut assembly having a second screw and a second nut, the second screw having a top end fixedly connected to the second driving portion, the second nut moving along the second screw; and a moving body fixedly connected to the second nut and moving along with the second nut. It is feasible to drive the moving body to move, by controlling only the power device, thereby incurring low manufacturing and control costs.

Abstract: A double screw elevator consists of two screws whose helical threads extend in opposite helical directions, and each of the screws is provided with a nut, so that a suspension unit and a carrying unit on the nuts can be driven to move close to or away from each other, thus achieving the function of lifting or lowering the elevator car. The double screw elevator is simply structured, easy to assemble, and the length of a single screw of the elevator is shortened, making it easier to manufacture the screw. Furthermore, the screw driving elevator reduces the occurrence of accident whiling improving the rate of utilization.

Abstract: A torque motor type elevator comprises a torque motor, a ball screw, a sliding nut and an elevator car. The torque motor serves to drive the load screw of the ball screw directly, so the elevator car fixed to the load nut is moved up and down. The ball screw of the present invention is provided for reducing the loss of energy of the elevator driving system, and the sliding nut is disposed on the ball screw to improve its safety. The torque motor can be added with a resolver or an encoder to control the position precisely. Such arrangements can prevent the problem of energy consumption and can simplify the structure.

Abstract: An elevator includes an elevator car guided to move up and down relative to a supporting member, a screw shaft having an upper end attached to the supporting member, a driving nut rotatably supported in a coupling device and threaded with the screw shaft, one driving device coupled to rotate the screw shaft and to move the driving nut up and down along the screw shaft, and a coupling device rotatably attached onto the driving nut and coupled to the elevator car. Another spare driving device may further be coupled to drive the screw shaft for moving the elevator car to a lower level or a safe location when the driving device either fails or is damaged.

Abstract: A wedge-ribbed belt supports an elevator car in a cantilevered mode and engages a drive pulley of a drive mounted at the head of an elevator shaft. The belt has a running surface facing the drive pulley with a plurality of ribs and grooves extending in parallel in a longitudinal direction of the belt. The ribs and grooves can be triangular-shaped or trapezium-shaped in cross section. A plane of the drive pulley is arranged vertically and at right angles to a car wall at a counterweight side of the elevator car.

Abstract: A wedge-ribbed belt supports an elevator car by underlooping and engages a drive pulley of a drive mounted at the head of an elevator shaft. The belt has a running surface facing the drive pulley with a plurality of ribs and grooves extending in parallel in a longitudinal direction of the belt. The ribs and grooves can be triangular-shaped or trapezium-shaped in cross section. A plane of the drive pulley is arranged vertically and at right angles to a car wall at a counterweight side of the elevator car and approximately in a middle of a car depth with a vertical projection of the drive pulley onto the counterweight side being outside a vertical projection of the counterweight side. A part of a vertical projection of the drive motor is superimposed on the vertical projection of the counterweight side of the elevator car.

Abstract: An elevator includes an elevator car guided to move up and down relative to a supporting member, a screw shaft having an upper end attached to the supporting member, a driving nut rotatably supported in a coupling device and threaded with the screw shaft, one driving device coupled to rotate the screw shaft and to move the driving nut up and down along the screw shaft, and a coupling device rotatably attached onto the driving nut and coupled to the elevator car. Another spare driving device may further be coupled to drive the screw shaft for moving the elevator car to a lower level or a safe location when the driving device has become failure or has damaged.

Abstract: A driving apparatus includes a roller screw that includes a main shaft, a plurality of roller shafts projecting radially outwardly and upwardly at an angle from the radial direction of the main shaft and arranged along a helical line there around, and a plurality of rollers rotatably mounted on the roller shafts. The rollers are tapered to the same angle inwardly toward the main shaft. A rail member, adjacent to and axially oriented with the main shaft, includes a plurality of spaced projections adapted for radial engagement with the tapered rollers. The angle of the tapering is pre-determined to provide a sliding free engagement between the rollers and the projections with the interface there between being oriented to intersect the rotation axis of their respective roller shaft on the rotation axis of the main shaft. The rotation of the main shaft axially moves the roller screw relative to the rail member.

Abstract: A linear drive unit has a threaded rod, and in combing engagement with same a threaded nut (2), from the outer circumference of which a number of equally spaced cogs (3) project in a radial direction. Furthermore, connecting links (4, 5), which extend parallel to the axis of the threaded rod inside a housing, are driven via hydraulically or pneumatically actuated pistons, causing the connecting links (4, 5) to move in an axial direction. During this oscillating movement the connecting links act upon cogs (3) that project from the threaded nut (2). The force exerted via the cogs (3) located on the outer circumference of the threaded nut (2) causes the threaded nut (2) to be put into an incremental rotation, which, in turn, causes an incremental linear shifting of the threaded rod (1).

Abstract: An ergonomically adjustable machine operator platform includes a worker support surface which includes a top surface and a bottom, a plurality of support legs disposed on a floor, wherein each support leg includes an external threaded surface portion, a drive member operably connected to each support leg and having an inner threaded bored surface therethrough which is configured to be complimentary threaded to the external threaded surface portion in a manner to permit axial movement along the support leg and wherein the drive member includes a bearing support surface disposed adjacent the bottom. The drive member further includes an exterior sprocket surface extending generally radially from the drive member, and a rotating device connected to the external sprocket surface for rotating the drive member to cause axial movement along the support leg to vertically move the worker support surface.

Abstract: A particular configuration of a compact self-aligning lift mechanism is provided for lifting the stem of a pedestal in a processing chamber while minimizing process anomalies due to geometric misalignment and binding of moving pieces. The force associated with supporting a stem in a processing chamber is routed through a first arm through a base portion of a carrier bracket where it engages a linear bearing such that the truck and track of the linear bearing absorb all forces riot aligned with the bearing. A second arm extending from the base portion, for example through a set of slots adjacent to the bearing track support member, is attached to a lift mechanism which can oppose the force from the pedestal stem such that the displacements of the first and second arms are predictable based on the force on that arm.

Abstract: An automated guided vehicle for carrying a load comprises a mast, a lift carriage, a ball screw drive assembly and a ball screw joint. The ball screw drive assembly has a lift nut and a vertically oriented ball screw. The ball screw joint operatively couples the drive assembly to the lift carriage so as to transmit upward vertical forces from the drive assembly to the lift carriage. The ball screw joint includes first, second, third and fourth shafts which permit the lift nut to move in any horizontal direction and to pivot about any horizontal axis with respect to the lift carriage. As a result, the ball screw joint advantageously prevents the transmission of horizontal forces and angular moments between the ball screw and the lift nut, thereby reducing the wearing out effects of component misalignment on the ball screw assembly.

Abstract: A heating and lifting mechanism for positioning a semiconductor wafer within a processing chamber is provided including a pedestal for supporting the wafer within the process chamber, a drive shaft extending downwardly from a lower region of the pedestal, which has a lead screw at a distal portion thereof, and a drive mechanism, which is coaxial with the drive shaft, for providing linear vertical translation of the shaft and pedestal. The device also includes a CONFLAT.RTM. assembly located between the pedestal and drive shaft. The CONFLAT.RTM. assembly includes upper and lower substantially flat planar plates removably connected to one another. The upper plate is connected to a lower region of the pedestal, and the lower plate is connected to an upper end of the drive shaft. The CONFLAT.RTM. assembly permits removal of the heater pedestal without removing the entire lift assembly.

Abstract: A lift assembly adapted to be incorporated into a structure for moving an object between adjacent floors of a structure. The lift assembly including a guide rail vertically extending between the adjacent floors, a traveler assembly slidingly disposed on the guide rail, a carrier assembly connected to the traveler assembly for holding the object to be moved, and a drive assembly cooperatively connected to the traveler assembly to cause the traveler assembly to move in an upward direction and a downward direction along the guide rail.

Abstract: An aircraft maintenance elevation system comprising a plurality of elevator platforms and a plurality of electro-mechanical drive assemblies which are coupled to and operable to selectively raise and lower respective ones of the elevator platforms. The elevation system further includes a control device which is electrically connected to the drive assemblies and is operational in a first mode wherein the elevator platforms may be raised and lowered independently of each other and a second mode wherein the elevator platforms may be simultaneously raised and lowered.

Abstract: A lifting apparatus is provided, in particular a lifting platform, in which a lifting carriage, upon which the load to be lifted can be placed, can be displaced along an arrester rod which is provided with screw threading and on which there is driven by the lifting carriage an easily moveable arrester nut. The arrester nut is supported on its top and bottom by the lifting carriage in such a way that it can rotate, and in this connection the lifting carriage has a braking element which can be brought into a working relationship with the arrester nut in order to prevent any further rotation of the arrester nut. In order to improve the functioning of this arrester apparatus so that it always leads surely to a catching of the falling lifting carriage, even under particularly adverse conditions, an additional safety element is installed which can be actuated either automatically or from the outside.

Abstract: A stage or support platform assembly for use in a synchrotron accurately positions equipment to be used in the beam line of the synchrotron. The support platform assembly includes an outer housing in which is disposed a lifting mechanism having a lifting platform or stage at its upper extremity on which the equipment is mounted. A worm gear assembly is located in the housing and is adapted to raise and lower a lifting shaft that is fixed to the lifting platform by an anti-binding connection. The lifting platform is moved vertically as the lifting shaft is moved vertically. The anti-binding connection prevents the shaft from rotating with respect to the platform, but does permit slight canting of the shaft with respect to the lifting platform so as to eliminate binding and wear due to possible tolerance mismatches.