Device for forcing piston ring radially outwardly

Details Device for forcing piston ring radially outwardly Device for forcing piston ring radially outwardly

1986-04-09

1986-12-30

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277151, F16J 906

Patent

active

046324054

ABSTRACT:
A device for forcing a piston ring, which is a sealing member interposed between the cylindrical outer surface of a piston and the bore wall of a cylinder, radially outwardly beyond the cylindrical outer surface of the piston. A plunger rod which forces the piston ring radially outwardly is extended through a coiled spring. One end of the coiled spring is enlarged in diameter and is made into engagement with the edge surface of a radial hole into which is inserted the coiled spring while the other end of the coiled spring is made into engagement with the inner end of the plunger rod, whereby the piston ring is forced to extend radially outwardly by the compressive force of the coiled spring acting on the piston ring through a plunger.

REFERENCES:
patent: 350004 (1886-09-01), Lang
patent: 1031744 (1912-07-01), Thompson
patent: 1427425 (1922-08-01), Sullivan
patent: 1529041 (1925-03-01), Sullivan

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