Seal

Details Seal Seal

1982-06-04

1984-06-12

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277165, 277229, F16J 1532

Patent

active

044537239

ABSTRACT:
A ring shaped seal is formed from an elastomeric material and is generally circular in cross-section. The material is covered in part with an elastomeric impregnated fabric secured thereon which serves as a work contacting surface for making a sealing engagement with a surface on a duct. A tubular ring shaped insert formed from an elastomer is embedded in the seal. A ring shaped spring is movably mounted in the bore of the tubular insert in such a way that the spring is not bonded to and does not adhere to the walls of the tubular insert. The insert is mounted in the seal so the walls of the tubular insert are between the spring and the elastomer impregnated fabric to hold the spring away from the fabric to prolong the life of the seal. The spring is sized so when the seal is mounted on the duct the spring can move in the bore of the tubular insert and exert a compressive force on the seal to compensate the seal for the decreasing resilience of the elastomeric material forming the seal.

REFERENCES:
patent: 3464707 (1969-09-01), Packard et al.
patent: 3603602 (1971-09-01), Padula
patent: 3813105 (1974-05-01), McQueen
patent: 4141563 (1979-02-01), Wu

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