Patent ID: 6132177
Filing Date: 2000-10-17
Classification: F04B,F25B,G11C

Abstract:
A method of stabilizing a throw adjusting cam of a compressor having a suction inlet, at least one compression chamber, and a complex crankpin, against destabilizing forces, wherein said cam forms part of said crankpin between angularly spaced end points which are delineated and established as junction(s) by structural stop and dogs on the crankshaft and cam respectively, and wherein said destabilizing forces comprise refrigerant pressure differentials and mechanical inertial forces acting on the piston associated with said complex crankpin, said method comprising the steps of:attaching a counterweight to said cam to generate centrifugal force torque (CFT) forces, said CFT forces tending to maintain said junction(s); andproviding a vent port connecting said at least one compression chamber with said suction inlet to reduce said pressure differentials.