Title: Spring brake units and drainage means therefor

Abstract: A spring brake unit for use in a vehicle braking system comprises a housing, a piston movable therein and connected to a brake or brake linkage, a spring interposed between the piston and a detachable end wall on the housing and urging the piston in a direction to apply the brakes fluid under pressure being introduced to the housing in a controlled manner to hold the piston in brake-off position, and the housing and/or detachable end wall being formed to define one or more drainage channels opening into a gaiter which bridges the joint between them and which includes a drain outlet.

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Inventors: Coupland, Ralph (Lincoln, EN)

Application Number: 529959
Filing Date: 1974-12-05
Publication_date: 1976-03-16
Assignee: Clayton Dewandre Company Limited (Lincoln, EN)
Primary Class(es): 92/86 92/63, 92/130A, 188/170
Other Classes:
US Patent Ref:

3181433	May, 1965	Cruse	92/63.
3495503	Feb, 1970	Gummer et al.	92/63.
3630093	Dec, 1971	Morse et al	188/170.
R25669	Oct, 1964	Leighton et al.	92/63.

Other Refs:
Primary Examiner: Halvosa, George E. A.
Assistant Examiner:
Attorney: Norris & Bateman