Rotary expansible chamber devices – With mechanical sealing – Seal element between working member and cylinder
Patent
1977-04-06
1978-05-23
Croyle, Carlton R.
Rotary expansible chamber devices
With mechanical sealing
Seal element between working member and cylinder
291566, 277195, F01C 1912, F16J 916, B23P 1508
Patent
active
040908240
ABSTRACT:
Internal seal for the piston of a rotary piston engine. The seal includes a slide ring with an annular scraping edge of L-shaped cross-section with an axial flange and a flange extending radially outward. The slide ring includes an axially extending ring with one face together with its inner periphery forming the scraping edge. The slide ring includes a radially extending ring with its inner periphery shrunk onto the outer periphery of the axial ring near the one face. The axial ring consists of a material having a smaller coefficient of heat expansion than the radial ring.
REFERENCES:
patent: 2577022 (1951-12-01), Lieberherr
patent: 3456624 (1969-07-01), Okamoto
patent: 3782869 (1974-01-01), Steinwart et al.
Audi NSU Auto Union Aktiengesellschaft
Croyle Carlton R.
Smith Leonard E.
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