Abstract: An elevator installation braking device is actuated and reset by an electromechanical actuator including an energy store, a retaining device, a resetting device and at least one connecting element for connecting the actuator to the elevator brake. The resetting device retains the connecting element, via the retaining device and counter to the action of the energy store, in a first operating position, corresponding to a standby position of the brake, or guides the actuator back into this position. The energy store acts as required, upon release of the retaining device, on the connecting element to actuate the brake and to bring it into a corresponding engagement position. The resetting device has a recoil-prevention device to relieve recoil forces. The energy store can have a stop buffer to reduce the force impact when the energy store strikes an end position.

Abstract: An elevator installation braking device is actuated and reset by an electromechanical actuator including an energy store, a retaining device, a resetting device and at least one connecting element for connecting the actuator to the elevator brake. The resetting device retains the connecting element, via the retaining device and counter to the action of the energy store, in a first operating position, corresponding to a standby position of the brake, or guides the actuator back into this position. The energy store acts as required, upon release of the retaining device, on the connecting element to actuate the brake and to bring it into a corresponding engagement position. The resetting device has a recoil-prevention device to relieve recoil forces. The energy store can have a stop buffer to reduce the force impact when the energy store strikes an end position.

Abstract: In an elevator installation an elevator car is movable along at least two guide rails and the car is equipped with a pair of safety brakes and an actuator for actuating the safety brakes. Each safety brake includes at least one brake eccentric with a cylindrical bearing bore and a brake housing with a bearing axle for mounting the brake eccentric. The bearing axle is arranged in the brake housing together with the brake eccentric to be pivotable or displaceable so that the brake eccentric, which is arranged on the bearing axle, in a first position can be kept at a spacing from a brake web of the guide rail and in a second position can be brought into contact with the brake web.

Abstract: A caliper brake for elevator systems has at least one, and preferably two, brake calipers. Each brake caliper has at least one brake pad on a respective brake arm pivoted at a fulcrum. The brake caliper can be swiveled at least into a ready position and into a braking position. The brake arm is elastic and preferably embodied at least partly as a leaf spring.

Abstract: An elevator drive for use in a counterweight-less elevator installation includes a motor driving a traction sheave in engagement with an elongate load bearing member supporting an elevator car, and a pressure applicator exerting a normal force on the elongate load bearing member as the member engages with the traction sheave. One of the traction sheave and the pressure applicator is displaceable relative to the other. Accordingly, in use, the normal force imparted by the pressure applicator on the elongate load bearing member can be varied to improve the longevity of the elongate load bearing member.

Abstract: An elevator installation includes a car, a counterweight and safeties which are fitted to the car and the counterweight. The car contains an electrically controlled device for actuating and optionally resetting the safety and the counterweight also contains an electrically controlled device with a safety, or the safety of the counterweight is actuated by a slack-line release.

Abstract: In an elevator installation an elevator car is movable along at least two guide rails and the car is equipped with a pair of safety brakes and an actuator for actuating the safety brakes. Each safety brake includes at least one brake eccentric with a cylindrical bearing bore and a brake housing with a bearing axle for mounting the brake eccentric. The bearing axle is arranged in the brake housing together with the brake eccentric to be pivotable or displaceable so that the brake eccentric, which is arranged on the bearing axle, in a first position can be kept at a spacing from a brake web of the guide rail and in a second position can be brought into contact with the brake web.

Abstract: An elevator system includes an elevator car support displaceable in a travel area provided for the travel of the elevator car support, and a first elevator car and a second elevator car, each car adjustably disposed on the elevator car support. A drive unit is further disposed on the elevator car support. A belt is also provided. The first elevator car and the second elevator car are thereby adjustable in opposite directions by the drive unit by the belt relative to the elevator car support.

Abstract: A testing device includes a receiving unit for electromagnetic signals arranged on a carrier element to be tested to generate test data from received electromagnetic radiation. The test data are evaluated in a processing system in order to determine a deviation of the test data from a nominal state of the carrier element. The testing device is used to test a carrier element of an elevator installation on which the elevator car is suspended.

Abstract: A testing device includes a receiving unit for electromagnetic signals arranged on a carrier element to be tested to generate test data from received electromagnetic radiation. The test data are evaluated in a processing system to determine a deviation of the test data from a nominal state of the carrier element. The testing device is used to test a carrier element of an elevator installation on which the elevator car is suspended.

Abstract: An elevator installation includes at least one elevator cage carrier in a travel space, a first elevator cage arranged at the elevator cage carrier, a second elevator cage arranged at the elevator carrier and at least one adjusting device for adjustment of the first and second elevator cages relative to the elevator cage carrier. The adjusting device includes at least one first rack connected at least indirectly with the first elevator cage, at least one second rack connected at least directly with the second elevator cage and at least one pinion engaged in the first and second racks. The first and second racks are so arranged with respect to the pinion that rotation of the pinion moves the first and second elevator cages in opposite directions.

Abstract: An elevator installation includes an elevator cage carrier with a first elevator cage and a second elevator cage. A hydraulic adjusting element for the first elevator cage is provided, which serves for adjusting the first elevator cage relative to the elevator cage carrier. In addition, a hydraulic adjusting element for the second elevator cage is also provided, which serves for adjusting the second elevator cage relative to the elevator cage carrier. In that case a stroke of the hydraulic adjusting element for the first elevator cage for adjusting the first elevator cage in a first adjustment direction is converted into a stroke of the hydraulic adjusting element for the second elevator cage for adjusting the second elevator cage in an opposite adjustment direction.

Abstract: A device can actuate and reset a safety gear in an elevator system. The device contains a pressure accumulator, possibly a compression spring, which, in case of need, can move at least two engagement elements of the safety gear essentially synchronously into an engaged position, and a remotely actuatable resetting device, which can retension the pressure accumulator into a ready position.

Abstract: An elevator brake can comprise a brake shoe with a substantially curved shape, the brake shoe being rotatable in a brake shoe support. The brake shoe support is mounted in a brake housing and can be linearly displaced between a readiness setting and an engagement setting. The brake can be actuated by an actuator. The actuator can comprise a brake store for acting on the brake through a connecting point to bring the brake into its engaged setting. A force store in the actuator can be held electromagnetically, and a resetting device enables resetting of the force store and of the actuator into the operating position.

Abstract: An elevator car has a brake system with braking devices engaging braking webs integrated into guide rails to brake the car. The braking devices include a brake housing, a first brake body movable by contact with the braking web and relative movement between the braking web and the brake housing to clamp the brake web, and a pusher arranged on the brake housing with the braking web arranged between the first brake body and the pusher with a required passage clearance. The pusher can be advanced toward the first brake body and pressed against the braking web to forcibly bring the first brake body into contact with the braking web. A pressing lever pivotally mounted on the brake housing acts to press the pusher against the braking web.

Abstract: An elevator installation braking device is actuated and reset by an electromechanical actuator including an energy store, a retaining device, a resetting device and at least one connecting element for connecting the actuator to the elevator brake. The resetting device retains the connecting element, via the retaining device and counter to the action of the energy store, in a first operating position, corresponding to a standby position of the brake, or guides the actuator back into this position. The energy store acts as required, upon release of the retaining device, on the connecting element to actuate the brake and to bring it into a corresponding engagement position. The resetting device has a recoil-prevention device to relieve recoil forces. The energy store can have a stop buffer to reduce the force impact when the energy store strikes an end position.

Abstract: An elevator installation includes a car, a counterweight and safeties which are fitted to the car and the counterweight. The car contains an electrically controlled device for actuating and optionally resetting the safety and the counterweight also contains an electrically controlled device with a safety, or the safety of the counterweight is actuated by a slack-line release.

Abstract: An elevator system includes an elevator car and a counterweight fixed to a traction device. A drive pulley moves the traction device. A bottom tensioning apparatus is fixed to the counterweight and to the elevator car. A tensioning weight tensions the bottom tensioning apparatus. In an end position of the counterweight, the elevator car can continue to move when the traction device is moved further by the drive pulley. This moves the tensioning weight at half the speed of the elevator car, for example. A measuring device is provided for the tensioning weight for detecting such a motion of the tensioning weight. This allows a triggering of an emergency stop of the elevator car.

Abstract: A testing device includes a receiving unit for electromagnetic signals arranged on a carrier element to be tested to generate test data from received electromagnetic radiation. The test data are evaluated in a processing system in order to determine a deviation of the test data from a nominal state of the carrier element. The testing device is used to test a carrier element of an elevator installation on which the elevator car is suspended.

Abstract: A testing device includes a receiving unit for electromagnetic signals arranged on a carrier element to be tested to generate test data from received electromagnetic radiation. The test data are evaluated in a processing system to determine a deviation of the test data from a nominal state of the carrier element. The testing device is used to test a carrier element of an elevator installation on which the elevator car is suspended.