Safety brake for escalators

Details Safety brake for escalators Safety brake for escalators

1989-03-16

1989-10-24

Butler, Douglas C.

Brakes

Operators

Spring

188 75, 188265, B60T 1304

Patent

active

048755583

ABSTRACT:
A safety brake for stopping an escalator in the event of a malfunction or the like, includes a locking pawl to prevent disengagement of the brake until the latter is intentionally released. Over the locking pawl reach a reinforcement of the brake. The brake is released by energizing a solenoid which displaces the locking pawl to an inoperative position. Once the locking pawl is disabled, the brake shoes are released from engagement with the escalator drive shaft brake disk. Locking and release of the brake shoes are initiated by springs and solenoid.

REFERENCES:
patent: 1541063 (1925-06-01), Norris
patent: 2491850 (1949-12-01), Browning
patent: 2652132 (1953-09-01), Browning
patent: 2693866 (1954-11-01), Trombetta
patent: 3032146 (1962-05-01), Szabo et al.
patent: 3115956 (1963-12-01), Trombetta
patent: 3651899 (1972-03-01), Yoshii
patent: 4023655 (1977-05-01), Anzai et al.
patent: 4031987 (1977-06-01), Webb
patent: 4132292 (1979-01-01), Dufresna

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