Abstract: A piston system for a reciprocating compressor is adapted for high speed, high pressure unloading conditions by providing a dual stage piston assembly wherein the piston is adapted for absorbing and redistributing a portion of the load during the high pressure applications or high pressure portion of a cycle without reducing the efficiency of the system during normal loads. Pressure of up to 4000 psi can be handled without damage to the piston or other valve components. The valve plate is held in the closed position by a compression spring which is adapted to be engaged by a finger/driver upon reciprocation of the valve piston. The finger driver moves with the piston against the valve plate to open the valve on the plunger downstroke and move away from the valve on the plunger upstroke. A shock absorbing element is positioned in the plunger/finger assembly to absorb the shock of the driving downstroke, thereby reducing the shock of the finger against the valve plate.

Abstract: A piston system for a reciprocating compressor is adapted for high speed, high pressure unloading conditions by providing a dual stage piston assembly wherein the piston is adapted for absorbing and redistributing a portion of the load during the high pressure applications or high pressure portion of a cycle without reducing the efficiency of the system during normal loads. Pressure of up to 4000 psi can be handled without damage to the piston or other valve components. The valve plate is held in the closed position by a compression spring which is adapted to be engaged by a finger/driver upon reciprocation of the valve piston. The finger driver moves with the piston against the valve plate to open the valve on the plunger downstroke and move away from the valve on the plunger upstroke. A shock absorbing element is positioned in the plunger/finger assembly to absorb the shock of the driving downstroke, thereby reducing the shock of the finger against the valve plate.

Abstract: In the embodiment shown, the carrier is of annular configuration having a width of less than the width of a side-seal groove in a rotor, in which groove the carrier is slidably inserted. As the rotor is subject to distortion, an O-ring is interpositioned between the carrier and the groove resiliently to isolate the carrier from such rotor distortion. The O-ring is fitted into an annular recess formed in the outside-diameter surface of the carrier.

Abstract: The arrangement comprises an intermediate housing for a plural-rotor mainshaft of a rotary engine in which the housing is vertically split transverse to the shaft rotary axis, into two portions. Each housing portion, like the mainshaft itself, is of one-piece construction, the portions having interfaced circular bores in which to receive the mainshaft. Rotor journals integral with the mainshaft are eccentric for use with rotary pistons, and are dimensioned to fit through the bores. In addition, a large radial bearing journal, also integral with the shaft, carries a full sleeve-type bearing and is directly received by the bore formed in one housing portion; the journal and its bearing are directly supported by and wholly radially enclosed by only the one housing portion. Accordingly, none of the bearing support is overhung, and yet both housing portions are abutted and interfitted together to transmit loading therebetween.