Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1977-02-25
1978-01-17
Ward, Jr., Robert S.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
418142, 277 81P, 277222, 267 15, F01C 102, F02B 5300, F01C 1908
Patent
active
040689867
ABSTRACT:
Improved sealing means are provided for a motor, engine, or pump having a piston mounted for orbital motion within a cylinder housing, with the housing including radial faces and a plurality of combustion chambers. The improved sealing means are disposed in a groove in at least one of the radial faces of the piston to prevent leakage of working fluid in a circumferential direction between adjacent combustion chambers. The sealing means is comprised of an annular seal ring including an annular band, the band having a plurality of spaced extension members which define pockets therebetween. Each of the pockets has disposed therein a circumferential sealing member and spring means, with each of the spring means operating to bias the annular band into engagement with one of the radial faces of the cylinder housing to prevent leakage of working fluid in a radial direction. Each of the circumferential sealing members prevents working fluid from escaping from its corresponding pocket and leaking in a circumferential direction to an adjacent combustion chamber.
REFERENCES:
patent: 3139233 (1964-06-01), Simonsen
patent: 3180563 (1965-04-01), Jones et al.
patent: 3400939 (1968-09-01), Jones
patent: 3885799 (1975-05-01), Bibbens
patent: 3923431 (1975-12-01), Abbey
patent: 3953159 (1976-04-01), Hunter
patent: 4005953 (1977-02-01), Ruf
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