Waterproof universal drum brake hydraulic cylinder

Details Waterproof universal drum brake hydraulic cylinder Waterproof universal drum brake hydraulic cylinder

2007-01-30

2007-01-30

Nguyen, Xuan Lan (Department: 3683)

Brakes

Wheel

Transversely movable

Reexamination Certificate

active

10640969

ABSTRACT:
The invention discloses an improved drum brake hydraulic cylinder. In a preferred embodiment, the invention discloses an O-ring in an annular groove to seal the cylinder. One specifically disclosed embodiment shows an additional exterior seal over the piston and the opening of the cylinder chamber and an optional cup seal. Another specifically disclosed embodiment shows universal drum brake hydraulic cylinder that may be used in left side and right side applications.

REFERENCES:
patent: 4024932 (1977-05-01), Fay
patent: 4553471 (1985-11-01), Brademeyer
patent: 4615419 (1986-10-01), Gaiser
patent: 4781276 (1988-11-01), Berisch et al.
patent: 4804017 (1989-02-01), Knapp
patent: 2002/0179381 (2002-12-01), Wilkin

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