Patent ID: 6461129
Filing Date: 2002-10-08
Classification: F01C,F04C,F05C

Abstract:
A scroll type apparatus for fluid displacement, comprising:a housing, said housing including a plurality of bores, each of said bores extending axially through a portion of said housing; a first scroll having a base and rib portions; a second scroll having a second base and second rib portions, said rib portions of said first scroll and second scroll being radially and phase-shifted relative to one another to contact in a plurality of points to define, with said base of said first and second scrolls, at least one fluid chamber; an adjustable mechanism for exerting pressure to and between said first scroll and second scroll to reduce an axial gap between opposing portions of said first scroll and said ribs of said second scroll, to keep said axial gap less than a defined amount for axial sealing of said fluid chamber; a thrust bearing disposed within and supported by the housing, said trust bearing being adapted to withstand axial thrust generated by movement of said compressed fluid in said fluid chamber as said second scroll orbits, said thrust bearing including a plurality of bosses extending axially from a surface of the thrust beating; and an adjustable mechanism extending through said bores to exert axial pressure against said plurality of bosses, and thus reduce an axial gap between opposing portions of said first scroll and said second scroll to keep said axial gap less than a defined amount for axial sealing of said fluid chamber.