Elevator system

Details Elevator system Elevator system

1980-01-07

1984-03-27

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 17, 187 29R, B66B 100

Patent

active

044388314

ABSTRACT:
A hydraulic elevator system wherein the pressure in the hydraulic system is used to measure load in the passenger compartment of the elevator car when the elevator car is stationary. A pressure monitoring device, such as a pressure switch, is calibrated to provide a signal when a predetermined pressure is reached, with this signal being used to modify the operation of the elevator system.

REFERENCES:
patent: 372361 (1887-11-01), Daft
patent: 1122497 (1914-12-01), Freer et al.
patent: 2173289 (1939-09-01), Staley
patent: 2611246 (1952-09-01), Ackerman
patent: 2644546 (1953-07-01), Doolan
patent: 3831492 (1974-08-01), Young
patent: 3902573 (1975-09-01), Grove
patent: 3942413 (1976-03-01), Schwarz et al.
patent: 4078623 (1978-03-01), Ohta
patent: 4210170 (1980-07-01), Sutton

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