Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 30, 2007
Patent Application Number
10640969
Date Filed
August 11, 2003
Patent Primary Examiner
Patent 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.
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