Patent ID: 6120268
Filing Date: 2000-09-19
Classification: F04C

Abstract:
A scroll compressor comprising:a non-orbiting scroll having a base and a spiral scroll wrap extending from said base, said wrap having a tip adjacent a center of said non-orbiting scroll wrap;an orbiting scroll having a base and a generally spiral scroll wrap extending from said base, said orbiting scroll having a tip adjacent a center of said orbiting scroll, said orbiting and non-orbiting scroll wraps intermitting to define compression chambers; andsaid tip of both of said non-orbiting and orbiting scroll wrap having an inner surface facing the opposed wrap, configured to have a forward ledge adjacent said tip and a rear ledge spaced from said forward ledge in a direction away from a forwardmost end of said tip, said forward ledge defining a thinner portion of said wrap and said rear ledge defining a thicker portion of said wrap, said rear ledge of one of said wraps being in contact with said forward ledge of the other of said wraps at the end of a compression cycle, and said configuration of said tip allowing compression chambers defined on both sides of said non-orbiting and orbiting scroll wraps to open approximately equally, after said end of said compression cycle.