Inner seal of a rotary piston engine

Details Inner seal of a rotary piston engine Inner seal of a rotary piston engine

1986-06-10

1989-01-10

Shoap, Allan N.

Rotary expansible chamber devices

With mechanical sealing

Seal element between working member and cylinder

277 81P, 277 95, 277175, 277181, F01C 1900, F04C 2700, F16J 1534

Patent

active

047970766

ABSTRACT:
An inner seal of a rotary piston engine has a U-shaped base body with legs running along the adjoining housing sidewall. During movement of the piston, the oil adhering along the housing sidewall is conveyed in an opening in the housing sidewall concentric to an eccentric shaft. The inner seal has a plurality of sealing laminations that are arranged along an inner base surface thereof and that are located with a scraper edge forming an acute abutting angle along the housing sidewall counter to direction of rotation. The angle of the scraper edge located in the plane of the housing sidewall equals respectively is smaller than that of the tangent along the rising branch of the trochoidal path, course or runway described by an inner corner of the scraper edge upon the housing sidewall relative to a radius of the inner seal intersecting this corner.

REFERENCES:
patent: 1930708 (1933-10-01), Cunningham
patent: 3275331 (1966-09-01), Mastrobattista et al.
patent: 3410255 (1968-11-01), Winkelmann et al.
patent: 3827701 (1974-08-01), Sakamaki
patent: 3941525 (1976-03-01), Wilmers et al.
patent: 4052310 (1977-10-01), Nolan
patent: 4058321 (1977-11-01), Gauran et al.
patent: 4080120 (1978-03-01), Eiermann
patent: 4202554 (1980-05-01), Snell
patent: 4415317 (1983-11-01), Butterworth
patent: 4526509 (1985-07-01), Gay, Jr. et al.

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