Valves and valve actuation – Valve – Seats
Patent
1998-05-04
2000-11-28
Wilson, Pamela
Valves and valve actuation
Valve
Seats
251367, F16K 106
Patent
active
061524239
ABSTRACT:
A system for sealing a head end of a cylinder to prevent a material flow through the cylinder. An o-ring inside the cylinder surrounds a piston when the piston is in a closed position inside the cylinder to prevent material from leaking into the cylinder around the piston. The o-ring is held in position by a groove inside the cylinder wall proximate a head end of the cylinder. A retainer ring has a first end held in place by a step protruding from the cylinder wall and a second end extending into a second end of the o-ring. The retainer ring applies a force to the retainer-ring which holds the o-ring inside the groove. The o-ring also applies a force to the retainer ring holding the o-ring in place.
REFERENCES:
patent: 2621011 (1952-12-01), Smith
patent: 3054594 (1962-09-01), Hecht
patent: 4268045 (1981-05-01), Traub
patent: 4399976 (1983-08-01), Legris
Micro Motion Inc.
Rinehart Ken B.
Wilson Pamela
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