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:
Jun. 25, 1985
Filed:
Dec. 27, 1983
Daniel L Hertz, Jr, Red Bank, NJ (US);
Seals Eastern Inc., Red Bank, NJ (US);
Abstract
A seal able to withstand high temperature, high pressure, corrosive environments including a ring-shaped core comprising an elastomer-impregnated asbestos yarn winding, and an elastomer-impregnated asbestos yarn helical winding surrounding and extending along the entire length of the core. The elastomer is a tetrafluorethylene-propylene copolymer or terpolymer, an ethylene-propylene copolymer or terpolymer, or a hydrogenated butadiene-acrylonitrile copolymer. There may be a plurality of helical windings around the core, one overlying another, and each turn of each winding may be parallel to, or at an acute angle to, a diameter of the core which passes through that turn. The cross-sectional shape of the seal may be circular, V-shaped, or any other advantageous seal shape.