Multiple seal for a pressure vessel

Details Multiple seal for a pressure vessel Multiple seal for a pressure vessel

1986-06-09

1987-06-23

Marcus, Stephen

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

251351, F16L 5504

Patent

active

046745416

ABSTRACT:
The pressure vessel comprises an accumulator (10) having a piston (16) disposed in a bore (14). The piston (16) has gas under pressure on one side thereof maintained within the bore (14) by means of a multiple seal in an opening (26) having first (28), second (32), and third diameter (36) sections. The multiple seal includes a fill screw (40) threadedly engaging the second diameter section (32) of the opening (26), the fill screw (40) having a conical surface (46) sealingly engaging a seat (31) between the first diameter (28) and second diameter (32) sections of the opening. A cap screw (70) is threadedly received within the third diameter section (36) and compresses an O-ring (60) between the cap screw (70) and housing (12). The cap screw (70) has an annular rib (77) which bites into a shoulder (34) of the body (12) to provide an additional seal for maintaining the gas under pressure within the bore (14).

REFERENCES:
patent: 1423418 (1922-07-01), Grikscheit
patent: 3420273 (1969-01-01), Greer
patent: 3509916 (1970-05-01), Mercier
patent: 3537357 (1970-11-01), Packer
patent: 3601358 (1971-08-01), Cruse
patent: 3930521 (1976-01-01), Zahid
patent: 4291726 (1981-09-01), Zahid
patent: 4307748 (1981-12-01), Mathias
patent: 4445530 (1984-05-01), Meixell
patent: 4470577 (1984-09-01), Warwick

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