Rotary piston machine of trochoidal construction

Details Rotary piston machine of trochoidal construction Rotary piston machine of trochoidal construction

1975-01-29

1976-02-17

Freeh, William L.

Rotary expansible chamber devices

With supply or exhaust passage in working member

418189, F04C 2908

Patent

active

039389197

ABSTRACT:
This invention relates to an improvement in a rotary piston machine of trochoidal construction for compressing a gaseous medium having working chambers between a trochoidal piston and a housing corresponding to the coordinated outer envelope curve, said working chambers being separated from each other by radial seals in the housing, and outlet openings closed-off by means preventing backflow for discharging medium from the working chambers, the improvement comprising trough-shaped recess means in the peripheral piston surface which, in the dead center position of the piston, are positioned immediately ahead of a radial seal.

REFERENCES:
patent: 2155756 (1939-04-01), Firestone et al.
patent: 3320899 (1967-05-01), Von Thuengen et al.

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