Apparatus for actuating a braking unit

Details Apparatus for actuating a braking unit Apparatus for actuating a braking unit

1979-01-16

1980-10-07

Reger, Duane A.

Brakes

Operators

Spring

303 15, F16D 6530

Patent

active

042263069

ABSTRACT:
The braking control means (33,33a) which serve to set the brakes are connected in parallel and the shut-off and lifting control means (33', 34) which permit lifting of the brakes are connected in series with the braking units (9). A single intact braking control means (33,33a) ensures braking, while all shut-off and lifting control means (33',34) must be connected correctly for lifting the brakes. The control means (33,33a,34) are provided with positioning means (41) which can be actuated via two control lines (42a, 43a) each and a switch (48) which can be switched between an "on" position lifting the brake and an "off" position which causes the brake to be set and in which at the same time a short-circuit-like connection between the two control lines (42a, 43a) is established in order to prevent any energy supply to the positioning means (41) and, thereby, unintended lifting of the set brakes.

REFERENCES:
patent: 2270431 (1942-01-01), Freeman
patent: 2330739 (1943-09-01), Piron
patent: 3272566 (1966-09-01), Clack
patent: 3777857 (1973-12-01), Hughes
patent: 3999075 (1976-12-01), Johnson et al.

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