Spring brake actuator

Details Spring brake actuator Spring brake actuator

2005-02-08

2005-02-08

Bonck, Rodney H. (Department: 3681)

192 clutches and power-stop control

Clutch and brake

C185S038000, C185S04000C, C188S158000, C188S167000, C192S090000

Reexamination Certificate

active

06851533

ABSTRACT:
A spring brake actuator is mounted with its shaft connected to the rotational operative shaft of a service brake actuator. The spring brake actuator has a clock spring, which is mechanically charged at a rotation of the actuator shaft in a brake release direction. It also has an electric coil for keeping when electrically energized—the clock spring in its charged condition. Further, it has means for transferring the rotative energy of the clock spring to the actuator shaft in a brake applying direction, when the coil is energized, but allowing free rotation of the shaft in either direction, when the coil is energized.

REFERENCES:
patent: 2430405 (1947-11-01), Millns
patent: 3217843 (1965-11-01), Newell et al.
patent: 3280944 (1966-10-01), Kyllonen
patent: 3693759 (1972-09-01), Schindel
patent: 4953668 (1990-09-01), Severinsson
patent: 4953669 (1990-09-01), Severinsson
patent: 5388674 (1995-02-01), Severinsson
patent: 20040060783 (2004-04-01), Severinsson
patent: 198 51 668 (2000-05-01), None
patent: WO 03052286 (2003-06-01), None

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