Abstract: An elevator system control system is provided and includes a sensor system configured to sense elevator car conditions, a safety system signaling element to generate a safety signal indicative of an incident and a control system configured to react to the safety system signal. When the control system receives the safety signal indicating that an incident has occurred that requires engagement of at least one of primary and secondary brakes, the control system controls a deceleration rate during the incident by operating the primary brake, determining whether the deceleration rate is within a target range and adjusting the deceleration rate based on signals from the sensor system.

Abstract: An apparatus for catching a shaft conveyor means (5) in the event of overtravel of a conveyor device, including an overtravel brake device, wherein coupling devices (80,90) are provided for automatic, form-fitting engagement with one another for fixing on the brake device and on the shaft conveyor means (50).

Abstract: A hoist system for hoisting a conveyance from a mineshaft, comprising: a head frame mounted over the mineshaft; a hoist connected to the conveyance by an elongate flexible hoisting element so as to be operable to hoist the conveyance from the mineshaft by winding the hoisting element; an upper crash barrier located on the head frame so as to be engageable by the conveyance to prevent upward movement of the conveyance beyond the crash barrier in an overwind condition; and an upper conveyance retarder to retard upward movement of the conveyance as it approaches the crash barrier.

Abstract: A fastening clip (16) for fastening a bracket (20), in particular a metal bracket in a vehicle, which is adapted to be inserted into an opening (14) of a body part (10) and to be fixed therein, includes a housing (22) having an insertion opening (26) and an elongated receiving space (24) for the bracket (20), a latching element (42) being provided in the receiving space (24), which is adapted to be moved resiliently from a holding position in which the latching element (42) holds the bracket (20) in the receiving space (24), to a release position in which the bracket (20) can be inserted into the receiving space (24) or can be pulled out therefrom, and to a fixing position, corresponding holding elements (46, 48) which fix the latching element (42) in the fixing position being provided in the receiving space (24) and on the latching element (42).

Abstract: The invention relates to a traction sheave elevator comprising a drive machine having an output shaft which is connected to the traction sheave via an endless drive member, whereby an encoder is provided in connection with the traction sheave, a motor speed detection device is provided, a monitoring unit is provided to which the output signal of the encoder and a speed signal of the motor speed detection device are fed, the monitoring unit comprises a comparator which compares the output signal of the encoder with the speed signal of the motor speed detection device, the monitoring unit initiates an emergency action if the result of the comparison exceeds a threshold value. The solution improves the safety in belt driven traction sheave elevators, particularly if only one belt is used for the transmission between drive machine and traction sheave.

Abstract: An elevator installation has a car, a counterweight, a traction device interconnecting the car and the counterweight, a motor and a traction sheave engaging the traction device. The elevator installation is monitored for over-traction and an air cushion is created between the traction sheave and the traction device when over-traction is detected.

Abstract: The invention pertains to an electric safety switch (3) resetting device (1) for the car safety device (5) of elevators, wherein the switch (3) is shaped as a box attached to the lower skirt (9) of the car frame, near the car safety blocks (11), comprising a mobile upper tongue (13) engaged with a car safety block triggering lever (15), which tongue (13) can trigger the switch (3) under the action of said triggering lever (15) and reset it in the opposite direction when operated by the maintenance operator, characterized in that it comprises a connecting rod arrangement (29) hinged to the said tongue (13) that can be remotely actuated by the operator using a drive means (35) while standing at the landing opening near the arrested elevator car, to drive said tongue (13) to a position that will reset the switch (3).

Abstract: A safety cable cutter used for cutting a cable used in servicing an oil and gas well. A centrifugal arm roller and a guide roller are mounted on top of a frame. The cable is received on the rollers as the cable is lowered down a well bore. Mounted on ends of the centrifugal arm roller is a centrifugal arm attached to an arm coil spring. The coil spring holds the centrifugal arm next to the end of the roller. Opposite ends of a clamp attached to a cutter bar are slidably received in a pair of cutter bar guides. When the centrifugal arm roller exceeds a certain speed indicating a free fall of the cable, the bias force of the arm coil springs is overcome and the arms move outwardly. Contact ends of the arms engage the opposite ends of the clamp. The clamp and cutter bar are then moved outwardly and the cutter bar cuts the cable.

Abstract: Novel residential elevators, and novel methods of installing and using residential elevators. A residential elevator of the invention typically includes guide rail structure, a car, lift apparatus, and cables connecting the lift apparatus to the car. The guide rail structure is mounted to the building. The car is mounted to the guide rail structure. The car has a range of upward and downward movement, along a path of travel between an upper limit and a lower limit. The lift apparatus lifts and lowers the car, and is mounted to the guide rail structure, at a location such that the lift apparatus is above the top of the car when the car is at the upper limit. Preferably, the cables extend directly from the car or car frame to the lift apparatus without passing over or around any sheave or around any other direction-changing structure.

Abstract: A method and apparatus for braking a tractor sheave elevator. In an emergency situation, the elevator braking is complimented by using a second braking device not connected to the traction sheave. A secondary braking can be accomplished by applying a braking force to the elevator ropes or guide rail. If the secondary brake is applied first, the ropes will not slip on the traction sheave when the primary brake is applied. Alternatively, slippage may be allowed to occur in order to distribute the heat produced by braking.

Abstract: A wafer lifter basket assembly includes a wafer lifter basket and a base, the base including a bracket and a bracket holder. The wafer lifter basket is mounted to the bracket, and the bracket holder is releasably connected to the bracket holder via spring-loaded plungers, which release upon the wafer lifter basket encountering a force of at least a predetermined level.

Abstract: A wafer lifter basket assembly includes a wafer lifter basket and a base, the base including a bracket and a bracket holder. The wafer lifter basket is mounted to the bracket, and the bracket holder is releasably connected to the bracket holder via spring-loaded plungers, which release upon the wafer lifter basket encountering a force of at least a predetermined level.

Abstract: In an elevator system, first and second car carrying bases move up and down along first and second segments of a hoistway, respectively. First and second support members are located on the first and second car carrying bases, respectively. A car is moved up and down within the hoistway while being selectively supported by the first or second car carrying base. The first and second car carrying bases are arranged so as not to overlap each other when projected on a horizontal plane. Each car support member can shuttle between a support position and a nonsupport position, the support position being a position at which the car support member supports the car by projecting into a moving path of the car and the nonsupport position being a position at which the car support member is retracted from and is outside of the moving path of the car.