Abstract: A thermally responsive valve arrangement for scroll motor-compressor high temperature protection, which causes a high-side to low-side leak when excessive discharge gas temperatures are encountered, thereby causing the motor protector to trip and deenergize to motor. A unique valve per se is also disclosed.

Abstract: A scroll type machine is disclosed which incorporates an improved mounting arrangement for the non-orbiting scroll member which mounting arrangement greatly facilitates manufacturing and assembly, effectively prevents radial displacement of the non-orbiting scroll member, and offers the advantages of axial compliance. In one embodiment,the non-orbiting scroll is axially movably secured to a bearing housing by means of a plurality of bolts of bolts and sleeves. In another embodiment a rigid annular ring serves to axially movably secure the non-orbiting scroll to the bearing housing while in a third embodiment a stamped ring is secured to both the non-orbiting scroll and the bearing housing.

Abstract: A scroll machine having an eccentric crank pin on a crankshaft disposed nonrotatably in the bore of a drive bushing for driving the orbiting scroll of the compressor. A flat surface on the crank pin drivingly engages a flat surface in the bore, and a unique lubrication arrangement incorporating a hydrostatic bearing is provided to lubricate the flat surfaces. Several alternative embodiments are also disclosed.

Abstract: There is disclosed a scroll-type machine suited for use as a gaseous fluid compressor. The machine incorporates symmetrical scroll members of substantially one wrap that have modified inner ends to provide continued sealing to a single separation point. The one wrap configuration and modified ends provide a very compact compressor design that enhances manufacturability and yet is able to deliver fluid gas with much greater pressure ratio versatility than conventional multi-wrap scroll compressors. The machine incorporates a discharge valve in the discharge port that allows various pressure ratios to be attained for a variety of end uses.

Abstract: A scroll machine is disclosed in which the wrap of one of the scroll members is formed in two pieces which can be moved with respect to one another to change the effective thickness of the wrap and hence the displacement of the machine.