Patent ID: 6547250
Filing Date: 2003-04-15
Classification: F04B,F16J,Y10S

Abstract:
A seal assembly for providing fluid sealing between an inner body and a housing body, wherein one of said bodies is movable relative to the other body and said seal assembly is fixedly associated with one of said bodies defined herein as a fixedly-associated body, with the other one of said bodies defined herein as a non-fixedly-associated body, said seal assembly comprising:(a) a static seal for providing a seal between said seal assembly and said fixedly-associated body, said static seal comprising a metallic member in the shape of a ring wherein said static seal is temperature-activated by said metallic member having a thermal expansion coefficient that is different from that of said fixedly-associated body, whereby said metallic member is urged towards said fixedly-associated body to activate said static seal when said seal assembly is within a predetermined operating temperature range; and (b) a dynamic seal for providing a seal between said seal assembly and said non-fixedly-associated body when said non-fixedly-associated body is moving relative to said fixedly-associated body, said dynamic seal comprising a dynamic seal member in the shape of a continuous ring with at least one flange that cooperates with said static seal to provide a seal between said static seal and said dynamic seal.