Master operator for vertically moving elevator car doors

Details Master operator for vertically moving elevator car doors Master operator for vertically moving elevator car doors

1977-01-21

1978-08-22

Love, John J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

49118, 187 59, B66B 1312

Patent

active

041082834

ABSTRACT:
A master door operator employs gate mounted driving clutch members which are locked in the clutching position by linkage arms, and a plurality of driven clutches are respectively mounted on the landing doors and each includes a rotatable cam carrying a pair of clutch rollers.

REFERENCES:
patent: 3783977 (1974-01-01), Voser
patent: 3921763 (1975-11-01), Westerlund
patent: 4015688 (1977-04-01), Mangel

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