Rotary piston machine with a protuberance in the cylinder wall

Details Rotary piston machine with a protuberance in the cylinder wall Rotary piston machine with a protuberance in the cylinder wall

1991-11-20

1992-09-15

Bertsch, Richard A.

Rotary expansible chamber devices

With mechanical sealing

Seal on cylinder engaging rotary member separates inlet and...

418126, 418168, F04C 224

Patent

active

051471949

ABSTRACT:
For improving the gap sealing between the circumferential surfaces of rot of a rotary piston machine and circular cylindrical inner surfaces (9) of the surrounding casing, rib-like protuberances (11) are displaced from the casing inner surfaces by cold working. On running in the rotary piston machine the external cross-sectional area of the protuberances (11) is removed by wear, so that between the protruberance (11) and the inner surface (9) a minimum sealing gap is obtained without corresponding manufacturing costs being involved in the formation thereof.

REFERENCES:
patent: 1993721 (1935-03-01), Pigott
patent: 2902980 (1959-09-01), Barrett
patent: 3652191 (1972-03-01), King et al.
patent: 4714417 (1987-12-01), Wankel

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