Piston having ceramic parts

Details Piston having ceramic parts Piston having ceramic parts

1989-02-27

1990-09-11

Look, Edward K.

Expansible chamber devices

Piston

Nonmetallic portion

92257, 92258, 921692, 921701, F16J 900

Patent

active

049552848

ABSTRACT:
A piston has a first endwall, a second endwall and a tubular ceramic sidewall extending between and forming a closed cylinder with the endwalls. The piston does not include a piston ring. The first endwall is substantially flexible and is releasably interconnected with the second endwall by means of connection with an extended portion of an associated piston rod mounted in a hub of the second endwall. As a result, the first endwall is urged into a concave configuration. The ceramic piston sidewall is mounted for reciprocation within a ceramic cylindrical wall. An anti-rotation device is provided to limit rotation of the endwalls relative to the sidewall, and another anti-rotation device is provided to limit rotation of the hub relative to the piston rod.

REFERENCES:
patent: 1731147 (1929-10-01), Moyer et al.
patent: 1751350 (1930-03-01), Moyer et al.
patent: 3783612 (1974-01-01), DeLigny et al.
patent: 3880055 (1975-04-01), Nakamura et al.
patent: 4197787 (1980-04-01), Schneider
patent: 4466399 (1984-08-01), Hinz et al.
patent: 4548125 (1985-10-01), Huther
patent: 4630958 (1986-12-01), McCallister
patent: 4751871 (1988-06-01), Burghardt et al.
patent: 4777844 (1988-10-01), DeBell et al.
patent: 4846051 (1989-07-01), Wade et al.

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