Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Including slideably mounted barrier on load support
Patent
1997-07-11
1999-04-20
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
With barrier for regulating access to load support
Including slideably mounted barrier on load support
49116, B66B 1306
Patent
active
058949119
ABSTRACT:
Microprocessor-based car door locking system includes an electromechanical door lock for elevator car doors having a latch-type rotary solenoid to move a plunger into locked and unlocked positions. In the locked position, the plunger engages a bracket mounted on the elevator car door. The door lock also includes a controller that integrates the door lock into the elevator system and provides failure management for the door lock. The door lock of the present invention does not require power during either the locked or unlocked state.
REFERENCES:
patent: 4529065 (1985-07-01), Kraft
patent: 5386886 (1995-02-01), Kubajashi et al.
patent: 5454447 (1995-10-01), Kulak et al.
patent: 5655627 (1997-08-01), Honne et al.
U.K. Search Report dated Sep. 12, 1997; serial No. GB 9713687.3.
U.S. Patent Application Serial No. 08/672,680 filed Jun. 28, 1996 entitled "Car Door Lock"; Marc. F. Chevilliard, et al. (OT-2707).
Bozorgzadeh Ali
Chicoine Troy R.
Dyer Frank E.
Faup John J.
Morrisino Frank P.
Noland Kenneth
Otis Elevator Company
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