Elevator car with improved door lock

Details Elevator car with improved door lock Elevator car with improved door lock

1989-02-13

1990-05-22

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 61, 49120, B66B 1300

Patent

active

049269755

ABSTRACT:
An elevator car having a clutch carried by a car door for engaging drive rollers of an adjacent hatch door via "open" and "close" vanes of the clutch. A door operator mounted on the car includes a door drive arm which is linked to the car door via a door crank arm. A door lock carried by the door clutch prevents normal operation of the door crank arm, unless the open vane of the door clutch contacts a hatch door drive roller. Thus, unless the car is in a floor landing zone, the car door cannot be opened by a passenger inside the car.

REFERENCES:
patent: 1326440 (1919-12-01), Chaudoir
patent: 1838524 (1931-12-01), Brown
patent: 2458702 (1949-01-01), Hains
patent: 2816625 (1957-12-01), McCormick
patent: 3605952 (1971-09-01), Lusti
patent: 3659677 (1972-05-01), Shalders
patent: 3721319 (1973-03-01), Hall et al.
patent: 4313525 (1982-02-01), McDonald
patent: 4357998 (1982-11-01), Gibson et al.
patent: 4364454 (1982-12-01), Glaser et al.
patent: 4423799 (1984-01-01), Glaser et al.
patent: 4436184 (1984-03-01), Dorman et al.
patent: 4469200 (1984-09-01), Young et al.
patent: 4491200 (1985-01-01), Thompson et al.
patent: 4512443 (1985-04-01), Dewhurst
patent: 4529065 (1985-07-01), Kraft

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