Title: Fail-safe brake for a vehicle

Abstract: A fail-safe brake for a vehicle and including friction-type brake members and hydraulic pressure-type piston members operable on the brake members. Springs are also operable on the brake members for positioning and holding the brake members in braking relationship when the hydraulic pressure is absent. Also, hydraulic pressure can be utilized for overcoming the springs and releasing the brake members. The system includes hydraulic pumps and valves for controlling flow to and from the brake unit itself. A piston pilot member and a piston guide cylinder both guide the pistons.

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Inventors: Rach, David T. (Milan, IL, US)

Application Number: 597421
Filing Date: 1975-07-21
Publication_date: 1976-08-17
Assignee: J. I. Case Company (Racine, WI)
Primary Class(es): 188/170 188/72.3, 188/366, 192/91A
Other Classes:
US Patent Ref:

3145816	Aug, 1964	Lorean et al.	192/91.
3188922	Jun, 1965	Cruse	188/170.
3547233	Dec, 1970	Girvan	188/170.
3647030	Mar, 1972	Burnett	188/72.
3831718	Aug, 1974	Muller et al.	188/170.
3842949	Oct, 1974	Newstead	188/72.
3893549	Jul, 1975	Bennett	188/170.
3895695	Jul, 1975	Hunter	188/170.

Other Refs: 1,943,7926,602,031

Mar, 1970	DT
Sep, 1966	NL

Primary Examiner: Blix, Trygve M.
Assistant Examiner: Kazenske, Edward R.
Attorney: Hansmann; Arthur J.