Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1989-03-13
1990-08-14
Huppert, Michael S.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 61, 49118, B66B 1300
Patent
active
049479644
ABSTRACT:
An apparatus for opening and closing the car door of an elevator car which is situated in the door opening zone of a floor is coupled together with a shaft door, and is driven automatically by a drive motor or, in the case of a power failure, manually by a passenger. If the elevator car is situated outside a door opening zone, the car door remains locked by the same apparatus. The car door is driven through a drive belt by way of an entraining parallelogram linkage, which linkage includes a rigid cam and a movable cam and is mounted at the upper part of a car door. For free travel through a door opening zone, the linkage is closed, and the linkage opens for the coupling with the shaft door between two coupling rollers mounted on the shaft door before a movement of the doors takes place. The movable cam includes a compressible ramp cam which, during the travel and on stopping outside a door opening zone, lifts off from a rigid cam carrier due to leaf springs. On the coupling with the coupling rollers of a shaft door, the ramp cam is pressed against the rigid cam carrier for the unlocking of a car door bolt. The linkage is connected to the drive belt by an actuating lever which cooperates with a pair of abutments to define the open and closed positions of the linkage.
REFERENCES:
patent: 2003399 (1935-06-01), Tamsitt
patent: 2960188 (1960-11-01), Schweig
patent: 3605952 (1971-09-01), Lusti
patent: 3783977 (1974-01-01), Voser
Huppert Michael S.
Inventio AG
Noland Kenneth
LandOfFree
Door drive apparatus with locking mechanism for elevators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Door drive apparatus with locking mechanism for elevators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Door drive apparatus with locking mechanism for elevators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-456016