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:
Jul. 18, 1978
Filed:
Nov. 12, 1974
William P Reid, Long Beach, CA (US);
Tetrafluor, Inc., El Segundo, CA (US);
Abstract
A composite seal for use between a movable element and a static element in a fluid pressure system where pressures vary on opposite sides of the seal. The seal comprises a fluoronated hydrocarbon sealing ring with a finely grooved sealing surface and an elastomer loading ring. The loading ring is a static seal and normally imposes radial force on the dynamic sealing ring and under increased fluid pressure deforms the peripheral grooves, forcing entrained fluid from them. The sealing ring has recovery characteristics which tend to restore the deformed grooves without readmitting fluid into the grooves, establishing a pressure differential which adheres the sealing ring to the surface to be sealed.