Release hold mechanism for a hand brake having a quick...

Details Release hold mechanism for a hand brake having a quick... Release hold mechanism for a hand brake having a quick...

2006-04-04

2006-04-04

Williams, Thomas (Department: 3683)

Brakes

Vehicle

Railway

C188S107000, C074S505000, C074S528000

Reexamination Certificate

active

07021430

ABSTRACT:
A hand brake mechanism having a release hold mechanism to prevent unwanted application of the railcar brakes. The release hold mechanism includes a cam and a holding pawl having cooperating force members and a detent retaining device engaging the cam disposed within the railcar hand brake to maintain the hand brake in the released hold condition. The cooperating force members disengage the cam from the detent retaining device to allow brake application. The hand brake incorporates an indicator member having a reflective coating to indicate such release hold position of the railcar hand brake.

REFERENCES:
patent: 3988944 (1976-11-01), Klasing
patent: 4282771 (1981-08-01), Grube
patent: 4291793 (1981-09-01), Klasing
patent: 4714142 (1987-12-01), Shepherd
patent: 6364428 (2002-04-01), Labriola et al.
patent: 6474450 (2002-11-01), Ring et al.

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