Elevator load measuring

Details Elevator load measuring Elevator load measuring

1984-10-22

1986-11-18

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

318474, B66B 500

Patent

active

046230416

ABSTRACT:
Signals indicative of full load up (FLU), no load down (NLD), and full load down (FLD) are supplied to an elevator controller (16) by a load measuring circuit (28) that is responsive to the phase angle in one line (32) of a bus feeding an AC motor. Based on the FLU and NLD signals the controller implements a slowdown/stop sequence closer to a landing than without the signals. Based on the FLU and FLD signals, the controller bypasses hall calls.

REFERENCES:
patent: 3026461 (1962-03-01), Lee
patent: 4321529 (1982-03-01), Simmonds et al.
patent: 4503937 (1985-03-01), Cervenec et al.

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