There is disclosed a scroll-type machine particularly suited for use as a refrigerant compressor and incorporating an improved suspension system for the non-orbiting scroll whereby the latter may be pressure biased for the purpose of augmenting tip sealing. The machine also has a modified wrap tip and...http://www.google.de/patents/US4877382?utm_source=gb-gplus-sharePatent US4877382 - Scroll-type machine with axially compliant mounting
