Scroll compressor with axial compliancy - U.S. Patent 4,938,669
Axial compliancy is achieved in a scroll compressor by providing a fluid pressure bias to the back of the orbiting scroll. The fluid pressure bias is supplied by one or more pockets configured to combine the efficient use of the available area with ease of manufacture.
Fraser, Howard H. Jr.; Lane, William R.; and Etemad, Shahrokh, "Scroll compressor with axial compliancy - U.S. Patent 4,938,669" (1990). Engineering Faculty Publications. 23.
Fraser Jr, Howard H., William R. Lane, and Shahrokh Etemad. "Scroll compressor with axial compliancy." U.S. Patent 4,938,669, issued July 3, 1990.