Abstract: An elevator inspection operation apparatus for performing an inspection operation for a car in a pit of an elevator includes: an operation mode selector switch configured to switch an operation mode between a normal operation and the inspection operation; a return switch, which is provided outside the pit of the elevator, and is to be manipulated when the operation mode is to be switched from the inspection operation to the normal operation; and a latching relay configured to be latched to an inspection operation side when the operation mode has been switched from the normal operation to the inspection operation by the operation mode selector switch, and to maintain a latched state until the return switch is manipulated when the operation mode has been switched from the inspection operation to the normal operation by the operation mode selector switch.

Abstract: An elevator assembly (1) comprises an elevator car (2), a counterweight (4), and a safety device (8) located on a roof (9) of the elevator car (2). A locking handle (10) is positioned within the elevator shaft (6), and connected to a first end (12a) of a tension member (12). A blocking stop (14) is connected to a second end (12b) of the tension member (12). The blocking stop (14) is moveable between an inactive state, in which the tension member (12) holds the blocking stop (14) in a position in which it does not limit downwards movement of the counterweight (4), and an active state, in which tension in the tension member (12) is reduced to allow the blocking stop (14) to move to a position in which it limits downwards movement of the counterweight (4).

Abstract: A hoistway access system for an elevator includes an access switch positioned at a selected landing floor 34 of an elevator and operably connected to a controller 46. A remote controlled lock 48 is located at landing doors of a landing floor providing access to a hoistway pit 36, and is operably connected to the controller. A safety actuation system is operably connected to an elevator car and operably connected to the controller. The controller is configured to command a drive system to drive the elevator car to an upper location when the access switch is activated, to define a selected safety volume in the hoistway defined by the hoistway pit and the elevator car, command engagement of the safety actuation system to stop and hold the elevator car, and command the lock to unlock when the safety actuation system is engaged, thereby allowing access to the hoistway via the landing doors.

Abstract: An unlocking device with an actuator releases a safety cover of a maintenance opening for opening. The locking device has a safety circuit for actuating the actuator. The safety circuit includes at least one first switching contact and a second switching contact arranged in series, wherein the actuator in a closed state of the first and the second switching contacts is connected by the safety circuit with a power source, and the first switching contact can be switched by a control unit. One or more of the unlocking device can be used in an elevator system.

Abstract: An elevator includes at least an elevator car arranged to move reciprocally in an elevator hoistway and fitted on guide rails, a plurality of landing doors having landing door locks openable e.g. with a service key, and a safety arrangement arranged to form a safe space, preferably a working space, in the elevator hoistway below the elevator car, access to which safe space is enabled via at least one landing door in the proximity of the base of the elevator hoistway, and/or a safe space, preferably a working space, above the elevator car, to which access is enabled via at least one landing door leading to the roof of the elevator car, and in which elevator the aforementioned safe space has a minimum height. The formation of each safe space is arranged to be implemented as a consequence of the opening occurring, e.g. with a service key, from a floor level of a landing door enabling access into the elevator hoistway.

Abstract: An exemplary device for preventing travel of an elevator car when a car door is open includes a receiver that remains in a fixed position relative to a hoistway wall. A stop member moves responsive to the car door moving toward an open position such that the stop member engages the receiver to prevent movement of the elevator car when the door is open.

Abstract: A retractable stop and the method of use thereof to control travel range of an elevator system are disclosed. The retractable stop may include a vertical mounting bracket, an impact plate, and a support member. The support member may include an upper end pivotably connected to a distal portion of the impact plate and a lower end movable in relation to the mounting bracket. The proximal portion of the impact plate may be pivotably connected to the mounting bracket. When the retractable stop is in a retracted position, the impact plate does not significantly contribute to the lateral profile of the retractable stop.

Abstract: An exemplary method of retrofitting a brake onto an elevator machine that was previously installed in an elevator system includes selecting a surface of the elevator machine that rotates as a sheave of the machine rotates. A braking surface is provided on the selected surface. At least one brake member is installed in a position to selectively engage the braking surface.

Abstract: An elevator arrangement, comprising an elevator car arranged to move in an elevator shaft or equivalent, preferably along car guide rails, and an element which is disposed in the elevator shaft or equivalent and is shiftable between an activated state and an inactivated state, and an activating device for shifting the said element between the activated and inactivated states. The activating device includes a flexible element, such as e.g. a rope or equivalent, movably attached to a fixed structure of the elevator shaft or equivalent, and the said flexible element is connected to the said shiftable element in a manner permitting the shiftable element to be shifted by means of the flexible element.

Abstract: A buffer arrangement of an elevator includes at least a buffer of the elevator and a buffer stop, which includes at least a stem part fixed to its base and a stop element with adjustable height position fitted in connection with the stem part. The stop element includes a stopping surface for the buffer of the elevator. An extension part is in connection with the buffer stop for increasing the height position of the stopping surface of the buffer stop.

Abstract: A lift car with a brake device which is arranged in the region of the lift car for holding and braking the latter; the brake device includes a brake unit which can interact with a brake rail, an actuating device which can generate an actuator force, and a connector which connects the actuating device to the brake unit in a force-active manner in order to transmit the actuator force, wherein the brake unit is in its open position in the unloaded position.

Abstract: A mounting method for a skid steer loader is disclosed including coupling a first end portion of a component directly to a first wall of a skid steer loader frame. The method also includes coupling a second end portion of the component to an opposite wall of the skid steer loader frame by a mounting system that allows for dimensional differences between the component and the skid steer loader frame.

Abstract: An elevator fall-prevention apparatus includes a holding member, which is shaped approximately like a rectangular tube, secured to a base part of an elevator guide rail. The holding member supports a locking support member that is rotatable about a spindle from a standby position into a blocking position.

Abstract: A frame for a lift, such as a double-decker lift, has at least one cage carried by a common, rectangular frame. The frame consists of an upper yoke, a center yoke, a lower yoke and side panels. First roller guides are provided for each lift guide rail ends of the frame longitudinal side or at the upper and lower yokes. A second roller guide for each guide rail is provided at the center yoke. The second roller guides improve the stiffness and increase the natural frequency of the frame.

Abstract: A bi-directional safety mechanism used in an elevator safety device and which produces a gradual catch on a guide rail. The bi-directional safety device has a roller and two hinged rectangular frames, each having a friction element. One hinged rectangular frame is disposed above the roller and the other hinged rectangular frame is disposed below the roller with both hinged rectangular frames on the same side of the guide rail. In addition, a set of fixed brakes are disposed on the other side of the guide rail and opposite to the hinged rectangular frames, preventing this system from marking the guide rail during the braking process.

Abstract: A vertically sliding freight elevator landing door with a safety brake that deploys when a chain suspending the door breaks. The safety brake is adapted for use on both panels that slide up to open or that slide down to open. The brake, which is simple in construction and installation, comprises, principally, a caliber block fixed to the door and a roller cam assembled in the block. A spring biases the roller cam towards a wedge lock position while a cable normally holds the roller cam in an inactive position. The cable and, therefore, the roller cam are released when the associated door suspension chain breaks. The roller cam, operating between a tilted internal surface in the caliper block and a door guide rail quickly frictionally brakes the door on the guard rail.

Abstract: An arrangement for a hoist secures safety zones in case persons should be outside the hoist cage in a hoist shaft. The arrangement can identify risk situations and includes mechanical limitation devices that can enter into the path of the hoist cage. The limitation devices are arranged at a distance from the upper and lower end limits of the hoist cage during normal operation in order to form upper and lower safety end limits, thereby mechanically securing the safety zones. Striking surfaces are arranged to tilt between an inactive state outside the path of the hoist cage and an active state in the path of the hoist cage forming the safety end limits. The striking surfaces are balanced so that they strive to take their respective active states. A retaining device is arranged on each striking surface to keep the striking surfaces in an inactive state during normal operation and to release the striking surfaces in a risk situation so that it takes its respective active state.

Abstract: Apparatus for maintaining adequate overhead space for a worker located upon the roof of an elevator car having a drive mechanism that disengages under a given load. A brace is secured to the car and is capable of withstanding a compressive load that is greater than the disengagement load of the drive mechanism.

Abstract: A safety brake for the load receiving portion of an elevator includes a fixing device that is displaceable relative to the load receiving portion in the direction of the guide rail between two abutments fastened to the load receiving portion. The unlocking of the safety brake after a braking process is achieved by moving the load receiving portion with the assistance of the elevator drive unit oppositely to the direction of movement before the braking process, so that one of the abutments fastened to the load receiving portion strikes the fixing device to unlock it from the guide rail.

Abstract: The elevator safety device creates a false pit beneath the elevator frame using left and right laterally-spaced, fixed stop members fixedly attached to the car frame, and left and right laterally-spaced safety columns affixed to the pit floor and pivotable between an extended position in vertical alignment with the left and right stop members, respectively, and a retracted position clear of the car, the frame, and the left and right stop members. The safety columns are bumper-type devices designed to support full car weight should the need arise, and provides the ASME A17.1 minimum depth of pit for the refuge area. Actuators are operatively connected to the safety columns to pivot them between their extended and retracted positions. A pressure-sensitive detector located on the pit floor below the car detects the presence of a person on the pit floor. The actuators are electronically activated to pivot the safety columns from their retracted to their extended positions.

Abstract: To prevent elevator rope stretch effects when a horizontally transferable elevator cab (18) is rolled onto and off of an elevator car frame (10), an elevator car/floor lock (31) includes a bolt (37) which extends across the interface between the car frame and the building and engages a strike (39). Jack screw (44) and solenoid (60) embodiments are shown. The bolt may extend from the car frame to the building (FIGS. 1-4) or from the building to the car frame (FIG. 5).

Abstract: A travel blocking apparatus is mounted in an elevator shaft to block travel of an elevator car or a counterweight into a temporary working space such as, for example, an elevator shaft pit or head. One or more travel blocking devices selectively pivot into the travel path of the car or the counterweight to block further travel in the desired direction. During each travel of the car away from the protected area, the travel blocking devices are retracted and upon each stop of the car are tilted to the blocking position. These movements of the travel blocking devices are sensed by safety switches to continuously check the functional capability of the travel blocking apparatus. An unlatching and release device positioned above the shaft door must be actuated by a key to open the shaft door, whereby a memory circuit is actuated further interrupting safety circuits. The memory circuit must be reset by a key switch in the machine room in order for the elevator car to resume operation.