Elevator door brake, brake, lock, and hold-open

Details Elevator door brake, brake, lock, and hold-open Elevator door brake, brake, lock, and hold-open

1997-12-31

1999-03-09

Nappi, Robert E.

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Includes motor or motor driven linkage for shifting barrier

187331, B66B 1314, B66B 1302

Patent

active

058804145

ABSTRACT:
When an elevator is running, the car door 27 is locked in the closed position by a brake shoe 12 which engages the edge of the door hanger 24 in response to a push-type solenoid 19 overcoming the force of a spring. When the door is not closed, a friction brake pad 11 contacts the door hanger surface to hold the door open for passenger boarding or to stop the door in case of failure of door operator power while the door is in motion.

REFERENCES:
patent: 4188552 (1980-02-01), Brimer
patent: 4501090 (1985-02-01), Youshida et al.
patent: 4529065 (1985-07-01), Kraft
patent: 5671829 (1997-09-01), Rivera

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