Patent ID: 6231325
Filing Date: 2001-05-15
Classification: F01C,F04C,F16C

Abstract:
A scroll-type compressor comprising:a first scroll member disposed within a housing and having a first end plate from which a first spiral element axially extends into an interior of said housing;a second scroll member disposed for nonrotatable, orbital movement relative to said first scroll member within the interior of said housing and having a second end plate from which a second spiral element axially extends into the interior of said housing, said first and second spiral elements interfitting at an angular and radial offset to make a plurality of line contacts which define at least one pair of sealed off fluid pockets; anda ball coupling provided as a rotation preventing mechanism for said second scroll member and having a pair of integrally formed rolling ball regulating plates and a plurality of balls disposed between said rolling ball regulating plates, said ball coupling being assembled in said scroll-type compressor at a condition in that an axial preload is provided, said axial preload being more than an axial force given by said balls to said rolling ball regulating plates during operation of said scroll-type compressor for correcting deformation of said rolling ball regulating plates.