Brakes – Wheel – Transversely movable
Patent
1977-11-10
1978-10-31
Reger, Duane A.
Brakes
Wheel
Transversely movable
188 1R, F16D 6556
Patent
active
041229215
ABSTRACT:
A wedge actuated brake assembly has movable brake shoes adapted to engage a surrounding brake drum with a housing having first and second openings therein. A plunger assembly is guided for linear movement in each of the first and second openings and adapted when urged out of the openings to force the shoe toward the drum. A flexible sealing member surrounds each of the first and second openings and each of the plunger assemblies. The flexible sealing member has a circular metallic body to be received within the end of each of the first and second openings to a depth determined by a radially extending lip formed thereon. The flexible sealing member includes a flexible boot bonded at one end to the circular metallic body. The boot is generally in the form of a truncated cone having a radially inwardly facing lip at its end opposite the end of the boot bonded to the circular metallic body. The lip defines a centrally disposed hole therethrough which intimately surrounds and seals about each of the plunger assemblies. There are two generally circular lips formed on the radially extending interior portion of the centrally disposed hole to enhance the sealing effect upon the plunger assemblies.
REFERENCES:
patent: 3540554 (1970-11-01), Burnett et al.
patent: 3797613 (1974-03-01), Nehr
patent: 3822003 (1974-07-01), Prange et al.
Diggs Edward J.
Grebe Karl
Reger Duane A.
Rockwell International Corporation
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