Abstract: A sound barrier cover for a compressor unit which has a housing provided by a substantially continuous wall which provided with a plurality of access ports therethrough. The barrier cover has first and second shell sections configured to lie close to the housing wall and substantially envelope the same wherein the shell sections are configured to provide two substantially longitudinally oriented halves each having sound absorbing material affixed to its inner surface. These halves have perimeters with portions thereof formed with mating tongue and groove structure and carry cooperating components of snap-fastener devices in close proximity to the perimeters. These snap-fastener devices are adapted to hold the perimeters in contact with each other and with the sound absorbing material in resilient contact with the housing.

Abstract: A scroll compressor having a housing containing a non-orbiting scroll and an orbiting scroll and a crankshaft having an eccentric mounted on the orbiting scroll, the non-orbiting scroll being fixed in operative position on the housing by a plurality of pairs of cooperating, mating key and keyway type components provided on the housing and non-orbiting scroll and mating with predesigned pressure contact, wherein all of the pairs have been mated with substantially equal pressure contact prior to fixing the positions of the pairs on the housing, and wherein the mated pairs allow axial compliance motion of the non-orbiting scroll while providing predetermined resistance to the motion.

Abstract: A wrist pin for use with a piston of a refrigeration compressor unit, wherein the wrist pin is to be mounted on a piston and non-rotatively affixed thereto, the pin having a longitudinal axis, a round cross-section and a uniform diameter over substantially its entire length to provide a peripheral journal surface adapted to be mounted within and juxtaposed the bearing surface of a wrist pin bore of a connecting rod for rocking motion within the bore, one or more oil transport grooves in the journal surface circumscribing the same within a longitudinally central region thereof, a generally longitudinally extending recess in the journal surface extending across the one or more grooves and to either side thereof within the region, the region of the journal surface being dimensioned to lie totally within the wrist pin bore of the connecting rod, the recess laterally encompassing an arc angle of from about 6.degree. to about 30.degree..

Abstract: A shell for a hermetic compressor unit, the shell having a top section or dome, and a bottom section, the dome having a unique shape which gives enhanced capacity for absorbing and attenuating structural and fluid transmitted wave energies emanating from the unit at wave frequencies of between 1,000 Hz and 2,000 Hz, while reducing total operating noise of the unit, the dome being formed of sheet metal and having a generally inverted cup-shaped configuration with generally cylindrical sidewalls and a top wall having a central portion surrounded by a peripheral portion, wherein the sidewall taken in a generally axial direction is substantially straight, wherein the central portion of the top constitutes from about 40 to about 90% of the total area of the top and has a generally hemispherical configuration on a mean radius of from about 6.5 to about 10.0 inches as measured from an origin point O.sub.

Abstract: A single or multi-cylinder compressor unit being cylinder wall ported and having suction inlet means to compression chamber means through the wall and top of piston means, wherein suction valve means comprises preferably a light-weight plastic disc means mounted in an essentially free-floating manner in the piston means top, the discharge valving cooperatively comprises discharge porting plate means and discharge valve disc means reciprocably mounted on bearing means in the compressor head for enhanced operating accuracy and seat longevity and adapted to seal discharge port aperture means in the plate means on the suction stroke, and wherein the piston means top, the compression side of the suction valve disc means, the compression side of the porting plate means, and the compression side of the discharge valve disc means all being adapted to lie substantially in the same plane at the apex of the compression stroke to essentially eliminate gas reexpansion.

Abstract: A compressor asssembly, with particular reference to the suction side thereof, for a gas compressor having one or more cylinders, pistons mounted for reciprocation in the cylinders, cylinder head means mounted over the ends of the cylinders to provide discharge chambers, refrigerant discharge valve elements intermediate the head means and cylinders and providing compression chambers and adapted to open discharge passages to the discharge chambers for pressurized gas on the compression strokes of the pistons and to close the discharge passages on the suction strokes of the pistons, first suction gas inlet passages through the walls of the cylinders at positions remote from the cylinder head means, second suction gas inlet passages in the pistons extending through the outer walls thereof and in communication with the first passages over at least substantial portions of the travels of the pistons, suction gas ports in the tops of the pistons in communication with the second passages, the ports having port seats

Abstract: A single or multi-cylinder compressor unit being cylinder wall ported and having suction inlet means to compression chamber means through the wall and top of piston means, wherein suction valve means comprises preferably a light-weight plastic disc means mouted in an essentially free-floating manner in the piston means top, the discharge valving cooperatively comprises discharge porting plate means and discharge valve disc means reciprocably mounted on bearing means in the compressor head for enhanced operating accuracy and seat longevity and adapted to seal discharge port aperture means in the plate means on the suction stroke, and wherein the piston means top, the compression side of the suction valve disc means, the compression side of the porting plate means, and the compression side of the discharge valve disc means all being adapted to lie substantially in the same plane at the apex of the compression stroke to essentially eliminate gas reexpansion.

Abstract: A refrigeration gas compressor unit having a casing, an electric motor driven compressor mounted in the casing, a housing containing and substantially isolating the inner cavities or passages of the motor from the casing cavity, refrigerant suction port in the casing, a primary-feed conduit connecting the suction port to the intake of the compressor, a secondary-feed conduit connecting the suction port to the primary-feed conduit and in part consisting of the passages between the housing, rotor and stator of the electric motor, a refrigerant flow control associated with the secondary-feed conduit for regulating the flow of refrigerant therethrough, and a refrigerant discharge port in the casing communicating with the compression chamber of the compressor.

Abstract: Refrigerant compressor construction having a cylinder, a piston mounted for reciprocation in the cylinder, a cylinder head mounted over the end of the cylinder to provide a compression chamber, and refrigerant discharge valving in the cylinder head or a valve plate assembled thereto adapted to open a discharge passage for pressurized refrigerant on the compression stroke of the piston means and to close the discharge passage on the suction stroke of the piston, a first suction gas inlet passage through the wall of the cylinder at a position remote from the cylinder head, a second suction gas inlet passage in the piston extending through the outer wall thereof and in continuous communication with the first passage, a suction gas port in the top of the piston in communication with the second passage, the port having a valve seat formed in the top of the piston and a valve disc mounted on the top of the piston for limited axial, floating movement and having a sealing surface adapted to bear against the valve sea

Abstract: A refrigerant compressor construction including one or more cylinders and pistons and a cylinder head mounted over the end of the cylinders, the head having a base, a first wall providing a suction chamber and a second wall providing a discharge chamber, each of the walls being unitary with the base and spaced from each other to provide a thermal barrier between the chambers to minimize suction gas heating.

Abstract: A shipping package for individual product units such as compressors or the like, adapted for use with a substantially planar shipping pallet, the package having a base pad and at least one middle pad, each of which pads has a substantially planar corrugated board member having one or more upper and lower plies, at least one of the upper plies having a plurality of individual cut-outs opening at the top surface of the board member, each cut-out being shaped to receive lower portions of an individual product unit in a substantially confining manner for preventing lateral movement thereof, each middle pad having strengthening walls peripherally surrounding the board member and oriented normal to the plane thereof, the walls extending a substantial distance on each side of the plane for maintaining the planar character of the member against substantial distortion forces, a plurality of units positioned on each pad in the cut-outs with each middle pad poisitioned on the tops of underlying units, and a cap overlyin

Abstract: A refrigeration gas compressor unit having a casing, and electric motor driven compressor mounted in the casing, a housing containing and substantially isolating the inner passages or cavities of the motor from the casing cavity, a refrigerant suction port in the casing, a stationary liquid-gas separator in the casing having a wall defining a generally circular chamber communicating substantially tangentially with the suction port, a primary outlet in a radially central portion of the separator and a secondary outlet in a peripheral portion thereof, a primary-feed conduit connecting the primary outlet to the intake of the compressor, a secondary-feed conduit connecting the secondary outlet to the intake of the compressor and includes the passages between the housing, rotor and stator of the electric motor, and a refrigerant discharge port in the casing communicating with the compression chamber of the compressor.