Expansible chamber devices – Piston – Open-ended hollow skirt type
Patent
1986-07-30
1988-04-12
Look, Edward K.
Expansible chamber devices
Piston
Open-ended hollow skirt type
92176, 92214, 92222, 92224, 123193P, F16J 104
Patent
active
047366761
ABSTRACT:
A composite piston structure is disclosed which provides a simple and reliable means for joining a carbon-carbon or ceramic piston cap 11 with a metallic piston body 13. Attachment is achieved by means of a special geometry which compensates for differences in thermal expansion without complicated mechanical fastening devices. The shape employs a flange created by opposed frustoconical shapes 12 and 19 with coincident vertices 15 intersecting on the radial centerline of the piston in order to retain the piston cap. The use of carbon-carbon for the piston cap material allows a close fit between the piston and a cylinder wall, eliminating the need for piston rings. The elimination of extra mechanical parts of previous composite pistons provides a lightweight composite piston capable of extended high temperature operation.
REFERENCES:
patent: 1373263 (1921-03-01), Regenbogen
patent: 1969470 (1934-08-01), McCoy
patent: 2473254 (1949-06-01), Morris
patent: 3152523 (1964-10-01), Whitfield et al.
patent: 3882841 (1975-05-01), Silverstein
patent: 4202310 (1980-05-01), Zorrilla et al.
patent: 4242948 (1981-01-01), Stang et al.
patent: 4245611 (1981-01-01), Mitchell et al.
patent: 4306489 (1981-12-01), Driver et al.
patent: 4404935 (1983-09-01), Kraft
patent: 4440069 (1984-04-01), Holtzberg et al.
patent: 4450610 (1984-05-01), Schaper
patent: 4506593 (1985-03-01), Sugiyama et al.
patent: 4512699 (1985-04-01), Jackson et al.
Helfrich George F.
Look Edward K.
Manning John R.
The United States of America as represented by the Administrator
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