The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 1992
Filed:
Jun. 25, 1990
Gavin S Oseman, Worcestershire, GB;
Dowty Seals Limited, Tewkesbury, GB;
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.