Abstract: In a compressor assembly, the motor compressor unit is vertically supported by lower bearing head which receives the crankshaft of the compressor. The lower bearing head is vertically supported by a positioning plate which is in turn vertically supported by a spring which is received in a recess in the casing. The mounting structure comprising the head, the plate and the spring coact to provide the sole vertical support of the motor compressor unit. This single vertical support is stable because the center of gravity of the compressor is coaxial with the centerline of the spring. The position plate may be rotated to accommodate compressors having different centers of gravity.

Abstract: An electric motor protection device comprising a body, an electric strip, a plunger, and pressure and temperature sensitive snap discs. The electric strip moves from a current conductive, closed position to a current nonconductive, open position when the current conducted through the strip exceeds a preset level. The plunger engages the electric strip also to move the strip from the closed position to the open position. The pressure and temperature discs move from normal positions to overcenter positions to engage the plunger and move the electric strip from the closed position to the open position, respectively, when the vapor pressure forces on the pressure disc and the temperature of the temperature disc exceed preset values.

Abstract: A hermetically sealed reciprocating motor compressor unit including a sealed shell. Discharge gas from the compressor is passed through the motor via suitable flow passages. The top of the motor and the interior surface of the shell define a chamber therebetween. The rotor functions as a centrifuge for separating the high pressure refrigerant gas from oil entrained therein. A substantially oil free vortex is formed encompassing a sector of the chamber defined by sides bearing 45.degree. relative to the vertical center line of the rotor. A refrigerant gas discharge tube connected to the top of the shell is located at any position which falls within the sector defining the vortex.