Apparatus for preventing drift of an elevator car stopped at a floor
AssigneeInventio AG
InventorMiles P. Lamb
Life of this patent
Estimating the term…
Abstract
A stopping apparatus for preventing drift of an elevator car stopped at a floor is actuated by a car door panel. The apparatus includes an axle rotatably mounted on the car floor, a radially extending operating arm for contact with an edge of the car door panel, at least one radially extending stop arm and a return spring for retracting the stop arm when the car door panel is closed. As the car door panel is opened, the stop arm is rotated adjacent a stop on the wall of the elevator shaft in which the car travels. If the stop is a recess formed in the shaft wall, a free end of the stop arm cooperates with the recess to prevent drift. If the stop is a floor door threshold, two stop arms are provided to prevent drift superposed above and below the threshold.
Claims12
An apparatus for preventing drift of an elevator car stopped at a floor comprising:
- a generally vertically extending axle rotatably mounted on a floor of an elevator car travelling in an elevator shaft;
- an operating arm having one end attached to said axle and a free end extending into a path of travel of a car door panel of the elevator car, the path of travel being between an opened position and a closed position of the car door panel;
- and
- a stop arm having one end attached to said axle and an opposite free end, whereby when the elevator car is stopped adjacent to a floor door and the car door panel is moved to the opened position, the car door panel contacts said operating arm thereby rotating said free end of said stop arm adjacent to a stop on a shaft wall of the elevator shaft, said stop arm and the stop cooperating to prevent drift of the elevator car in at least one direction in the elevator shaft.
An apparatus for preventing drift of an elevator car stopped at a floor comprising:
- a generally vertically extending axle rotatably mounted on a floor of an elevator car travelling in an elevator shaft;
- an operating arm having one end attached to said axle and a free end extending into a path of travel of a car door panel of the elevator car, the path of travel being between an opened position and a closed position of the car door panel;
- a stop arm having one end attached to said axle and an opposite free end, whereby when the elevator car is stopped adjacent to a floor door and the car door panel is moved to the opened position, the car door panel contacts said operating arm thereby rotating said free end of said stop arm adjacent to a stop on a shaft wall of the elevator shaft, said stop arm and the stop cooperating to prevent drift of the elevator car in at least one direction in the elevator shaft;
- and
- a return spring having one end attached to the elevator car floor and an opposite end attached to one of said stop arm and said axle for rotating said free end of said stop arm to a retracted position when the car door panel is moved to the closed position.
Dependencies are inferred from the claim text.