Patent ID: 7665582
Filing Date: 2010-02-23
Classification: B66B

Abstract:
1. Elevator system comprising an elevator car with a working platform arranged for carrying people or materials, an elongated generally vertical mast constructed from a number of mast sections mounted on top of each other along which the elevator car can be moved by means of the interaction between a gear wheel rotated by a drive motor and a gear rack running along the mast, a passenger carrying service and assembly platform that is designed as a cage with surrounding protective railing and that is so supported on the elevator car that it can be brought to move relative to the working platform between an inner position of rest and an outer working position at a distance from the working platform via a swing arm having a first end and a second end, wherein motion of the service and assembly platform in relation to the elevator car is obtained through a combination of (a) a first bearing that is pivotally connected to the service and assembly platform and the first end of the swing arm via a swivel shaft and a swivel sleeve and that allows the service and assembly platform to swing in a horizontal plane around a first vertical axis of the first bearing, and (b) a second bearing that is pivotally connected to the second end of the swing arm and the elevator car and that allows the swing arm to swing in a horizontal plane around a second vertical axis of the second bearing, wherein a first locking member comprising a handle operably connected to a brake may be driven to a braking position against the swivel shaft to lock the assembly and service platform; and wherein a second locking member operably configured to lock the service and assembly platform relative to the elevator car comprises a flat iron that is swivel mounted at one end of the elevator car and whereby a relative locking action between the swing arm and the elevator car is obtained via the action of a slotted hole running along the length of the entire flat iron and a set screw in the swing arm against the flat iron.