Spring loaded piston seal assembly

Details Spring loaded piston seal assembly Spring loaded piston seal assembly

1982-04-05

1983-10-25

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277119, 277175, 277224, F16J 906, F16J 922

Patent

active

044114362

ABSTRACT:
Spring loaded seals comprised of two resting rings positioned in an annular groove of a piston that are pressed against the upper and lower shoulders of the groove by a corrugated spring fitted therebetween. Each resting ring has at least one free-floating sealing wedge, preferably made of ceramic material, which overlaps the outer peripheral edge thereof for sliding along the cylinder wall wherein the sealing wedges frictionally press against the cylinder wall during the stroke of the piston in one direction and release to more freely slide along the cylinder wall in the other direction. The resting rings and sealing wedges form dry seals, i.e. unlubricated sliding seals, for use in compressor devices which operate at either high or low temperatures.

REFERENCES:
patent: 621817 (1899-03-01), Hopkins
patent: 2931671 (1960-04-01), Beeley

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