Abstract: The means comprise a housing for a seal defined as a generally cup-shaped retainer, the wall of which is resiliently compressible in order that the retainer might be pressed into a cartridge or housing to retain a seal therewithin, in which the outer surface of the wall of the retainer has an annular lip which snaps into engagement with an annular groove formed therefor in the housing. The use of a plurality of the seal housing means, in stacked relationship, for sealing along a shaft or the like, provides an optimum spacing of the retained seals lengthwise of the shaft.

Abstract: The invention comprises an L-shaped tank which, in combination, has both a vertical, liquid-reservoir housing and a horizontal, filter housing through which compressed gas, which has liquid entrained therein, is conducted. The gas is guided in centrifugal travel through the vertical housing, to separate out the liquid, and then it passes through a filter, fixed within the horizontal housing about an apertured outlet pipe, also to separate any remaining liquid from the compressed gas. A plurality of baffles require the product gas to follow a circuitous or tiered path through the vertical housing, and the apertured outlet pipe is offset from the center of the horizontal housing to insure that the being-filtered gas uniformly addresses the outlet pipe.

Abstract: The rotor, in the embodiment depicted, comprises a rotor blank having a hub with at least one radially extending tooth, the rotor being sheathed in plastic, excepting for the hub surface areas. Throughgoing bores formed in the blank receive plugs or dowels of the plastic to secure the sheathing in place. Additionally, the periphery of the blank has an inwardly-widening groove formed therein to fix plastic sheathing also on the periphery. The rotor is formed of steel, and the plastic sheathing has a coefficient of expansion which is the same as that of the steel.