Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1985-07-16
1986-03-25
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277188R, F16J 1524
Patent
active
045778744
ABSTRACT:
A two element, high and low pressure seal assembly to be used in a hydraulic or pneumatic sealing environment between two relatively movable machine parts, the seal assembly comprising a spring element, circular or rectangular in cross-section and made of a relatively soft elastomeric material, and spring element being substantially contiguously surrounded along all but a small exposed area and contained within an annular slot of a house-shaped elastomeric annular sealing member whereby an integral assembly is formed for easy installation and unitary response. The house-shaped sealing element comprises a central body from which two anti-extrusion legs radially extend. The legs are located fore and aft of the spring element within an annular peripheral groove in one machine part and are disposed perpendicular or radial to the axis of said machine part. Projecting radially beyond said machine part is a convergingly tapered gabled surface defining a central apex or tip portion, said tip portion creating a narrow band contact dynamic seal area between the apex per se and the second machine part when the seal assembly is in said machine part groove and compressed between the two machine parts. The sealing element may project either radially inwardly or radially outwardly from the spring element. The axial dimension of the entire seal assembly is slightly smaller than the axial dimension of the machine groove.
REFERENCES:
patent: 3771801 (1973-11-01), Burke
patent: 4059280 (1977-11-01), Eastwood
patent: 4067584 (1978-01-01), Hugel
patent: 4151999 (1979-05-01), Ringel
patent: 4179131 (1979-12-01), Nussbaumer
patent: 4190259 (1980-02-01), Zitting
Foster Lynn G.
Microdot Incorporated
Smith Robert I.
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