Clearance-controlling means and methods

Details Clearance-controlling means and methods Clearance-controlling means and methods

F - Mech Eng,Light,Heat,Weapons

04

C

230/90, 230/98

F04C 18/08 (2006.01) B24B 19/08 (2006.01) F01C 21/10 (2006.01)

Patent

CA 1214759

Clearance-Controlling Means and Methods Abstract of the Disclosure The embodiment depicted comprises a pair of coacting rotors, in a rotary compressor, hav- ing interengaging lobes and grooves, the rotors being journaled in intersecting bores in a housing. The circumferential surfaces, and end walls of the bores are polymer-layered and the rotors carry abrasive to machine the polymer to define an optimum clearance for rotor rotation within the bores, and in coaction together. Each rotor is polymer-coated and abrasive parti- cles are borne in the polymer on the outer edges of the lobes and in discrete radial patterns on the rotor sides. The method defines the polymer- coating and abrasive particles-deposition steps.

441229

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