Patent ID: 8202060

Claim:
A compressor comprising: a housing; a high pressure slide valve assembly positioned at least substantially within the housing, the assembly comprising: a carriage mechanism; a volume slide valve mechanism secured to the carriage mechanism and movable to control compressor volume ratio and power input to the compressor, the volume slide valve mechanism including a first surface having a volume low pressure groove, a second surface having a volume high pressure groove; and a third surface having a volume low pressure groove; and a capacity slide valve mechanism that is secured to the carriage and is in operational association with the volume slide valve mechanism, the capacity slide valve mechanism movable to control compressor capacity, the capacity slide valve mechanism including a first surface a second surface having a pair of capacity high pressure grooves; and a third surface having a capacity high pressure groove and a capacity low pressure groove; wherein at least one of the grooves of the volume slide valve mechanism and the capacity slide valve mechanism counter pressure and provide lubrication including an oil and gas mixture, to ensure movement of and between the volume and capacity slide valve mechanisms in a high pressure environment.