Compressor cylinder and unloader apparatus

Claim 1

A COMPRESSOR COMPRISING; A HOUSING, A COMMON SUCTION CHAMBER AND A COMMON DISCHARGE CHAMBER IN SAID HOUSING, FIRST WALL MEANS SEPARATING SAID SUCTION CHAMBER FROM SAID DISCHARGE CHAMBER, A CRANKCASE CHAMBER IN SAID HOUSING, SECOND WALL MEANS SEPARATING SAID SUCTION CHAMBER FROM SAID CRANKCASE CHAMBER, MEANS FORMING OPENINGS FOR A CYLINDER LINER ASSEMBLY IN SAID FIRST AND IN SAID SECOND WALL MEANS, OIL CONDUCTING MEANS IN SAID SECOND WALL MEANS, AN ANNULAR UNLOADING ASSEMBLY MEANS CONNECTED TO SAID OIL CONDUCTING MEANS AND ABUTTING SAID SECOND WALL MEANS AROUND SAID OPENING IN SAID SECOND WALL MEANS, A CYLINDER LINER ASSEMBLY POSITIONED IN SAID OPENING IN SAID FIRST WALL MEANS AND EXTENDING THROUGH SAID ANNULAR UNLOADING ASSEMBLY MEANS AND ABUTTING SAID SECOND WALL, SAID CYLINDER LINER ASSEMBLY INCLUDING A CYLINDER LINER, SAID CYLINDER LINER HAVING A FIRST ANNULAR SEALING MEMBER IN AND SURROUNDING THE OUTER LOWER DIAMETER PORTION OF SAID CYLINDER LINER AND A SECOND ANNULAR SEALING MEMBER IN AND SURROUNDING THE OUTER UPPER DIAMETER PORTION OF SAID CYLINDER LINER, SAID UNLOADING ASSEMBLY MEANS INCLUDING A CYLINDER ADJACENT AND SURROUNDING SAID CYLINDER LINER, SAID CYLINDER BEING IN DIRECT CONTACT WITH SAID SEALING MEMBERS IN SAID CYLINDER LINER, SAID CYLINDER HAVING AN INNER DIAMETER PORTION ADJACENT SAID SECOND SEALING MEMBER GREATER THAN THE INNER DIAMETER PORTION ADJACENT SAID FIRST SEALING MEMBER, AND PISTON MEANS SLIDABLY MOUNTED IN SAID CYLINDER ASSEMBLY MEANS TO DRAW GASEOUS REFRIGERANT INTO SAID CYLINDER LINER ASSEMBLY MEANS FROM SAID SUCTION CHAMBER AND DISCHARGE COMPRESSED GASEOUS REFRIGERANT INTO SAID DISCHARGE CHAMBER