Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means
Patent
1993-12-10
1995-06-06
Stephan, Steven L.
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
177231, 177168, G01G 1918
Patent
active
054214335
ABSTRACT:
The invention obtains the weight of an elevator car in a manner which is minimally dependent on the distribution of the load within the cab by means of a load cell and support sandwiched between a first and second plate, the load being shared between the load cell and support. Threaded rods pass through the first and second plates, as well as through a space between the first and second plates, and further pass through hitch springs and support the car. The upper ends of the rods are connected to the hoist ropes. The load weighing apparatus further includes a pair of rod positioners which keep constant the lateral displacement of the rods one from another. The load cell and support are not enclosed by the rods, yielding the further advantage that a mechanic has easy access to the load cell for its maintenance.
REFERENCES:
patent: 4479560 (1984-10-01), Day
patent: 4793442 (1988-12-01), Heckler et al.
patent: 4899852 (1990-02-01), Salmon et al.
patent: 5046584 (1991-09-01), Yoo et al.
patent: 5149922 (1992-09-01), Kondou
patent: 5172782 (1992-12-01), Yoo et al.
Nappi Robert
Otis Elevator Company
Stephan Steven L.
LandOfFree
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