Bellows self-threading seal

Details Bellows self-threading seal Bellows self-threading seal

1996-08-30

1997-08-12

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 9, 277212FB, 403 51, 403282, F16J 1552, F16B 718

Patent

active

056557787

ABSTRACT:
A method and apparatus for improving a seal of a pliant tubular member on a cylindrical shaft. The seal is in the form of an articulating seal member positioned on a piston rod of a reciprocating pump and in this invention, is for use in a system that has dual in-line reciprocating pumps. The articulating seal has a tubular end positioned over circumferential grooves on each piston rod of the dual acting piston pump. To provide a tight, intimate seal relationship of the tubular end of the articulating seal with the piston rod, a self-threading member is threaded over the pliant tubular end to crush and deform the pliant tubular end into the circumferential grooves.

REFERENCES:
patent: 1397413 (1921-11-01), Evans
patent: 1885121 (1932-11-01), Loweke
patent: 2290776 (1942-07-01), Stillwagon, Jr.
patent: 2473618 (1949-06-01), Stillwagon, Jr.
patent: 2492030 (1949-12-01), Beekley
patent: 3387870 (1968-06-01), Gottschald et al.
patent: 4508018 (1985-04-01), Choinski et al.
patent: 4936811 (1990-06-01), Baker
patent: 5152540 (1992-10-01), Kuze
patent: 5415531 (1995-05-01), Cavanaugh
patent: 5498076 (1996-03-01), Krzywdziak

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