B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
137/80, 303/81
B60T 15/00 (2006.01) F16K 17/40 (2006.01)
Patent
CA 1133970
A VALVE ASSEMBLY HAVING A PREDETERMINED SHEAR LINE ABSTRACT OF THE DISCLOSURE A valve assembly is disposed between an accumulator and a pressure chamber in a hydraulic brake booster. The valve assembly operates to communicate the pressurized fluid to the pressure chamber when the pressurized fluid within the pressure chamber is insuffici- ent to provide a power assist during braking. The valve assembly comprises a base which is received within a housing separating the accumulator from the pressure chamber. The base defines an opening leading to the housing bore and a body extends into the opening to define a clearance between the base and the body. The clearance leads to a recess on one end of the body which cooperates with a recess on the other end of the body to define a shear line for the body, The body is cut out on the one end of the body adjacent the recess to define a secondary passage and a portion of the body is movable after shearing into engagement with the base to substantially take up the clearance. The cutout cooperates with the base to define a restriction for the secondary passage which communicates the accum- ulator with the pressure chamber.
343084
Kushner Gregory A.
Martinic Jack
Bendix Corporation (the)
Macrae & Co.
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