Resilient sealing element having T-shaped cross section

Details Resilient sealing element having T-shaped cross section Resilient sealing element having T-shaped cross section

1990-06-25

1992-02-18

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277165, 277177, 277188A, F16J 1532, F16J 920, F16J 1516

Patent

active

050887440

ABSTRACT:
A sealing assembly comprises a resilient sealing element (1), possibly substantially T-shaped in cross-section, with a horizontal top portion (2) and a vertical portion (3) depending from the top portion and possessing a rounded sealing lip (4) at an end remote from the top portion (2). The assembly also comprises supporting elements (5) of substantially non-resilient material positioned one on each side of the vertical portion (3) characterized in that the surface of the sealing lip (4) is less rounded than semi-circular when in a non-deflected condition. Opposed sides of the vertical portion (3) meet the surface of the sealing lip (4) at turning points (T, P), and the surface of the sealing lip between these turning points preferably lies within semi-ellipses whose minor radii (B) are from 30% to 80% of the major radii (A) extending between the turning points (T, P). Preferably, the surface of the sealing lip is symmetrical about the center line of the cross-section of the vertical portion, preferably being semi-elliptical.

REFERENCES:
patent: 2349170 (1944-05-01), Jackman
patent: 2765204 (1956-10-01), Josephson
patent: 3582094 (1971-06-01), Whittaker
patent: 3771801 (1973-11-01), Burke
patent: 4059280 (1977-11-01), Eastwood

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