Moving piston with self-tightening sealing ring

Details Moving piston with self-tightening sealing ring Moving piston with self-tightening sealing ring

1984-03-19

1985-04-02

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

92202, 92205, F16J 106

Patent

active

045083541

ABSTRACT:
Packing or sealing moving in a hollow cylinder.
Such a device, or moving piston with self-tightening ring, comprises two elements of cylindrical external outline such as a cylindrical rod integral with the first element slides in a cylindrical chamber delimited inside a second element and facing the first element, the two elements being separated by an annular ring that ensures the packing or sealing with the internal wall of the cylinder.
Such a piston allows to suppress use of mercury as pressure transmission agent.

REFERENCES:
patent: 48098 (1865-06-01), Rowe
patent: 1523986 (1925-01-01), Schmidt
patent: 2266691 (1941-12-01), Mercier
patent: 3916771 (1975-11-01), Niendzig
patent: 4009645 (1977-03-01), Freimuth
patent: 4079948 (1978-03-01), Paureau
patent: 4226169 (1980-10-01), Mtzur et al.

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