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:
Sep. 24, 1985
Filed:
Sep. 28, 1984
Applicant:
Inventor:
Dean R Bainard, Lake Wylie, SC (US);
Assignee:
The Fluorocarbon Company, Laguna Niguel, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; E21B / ; B61F / ;
U.S. Cl.
CPC ...
29417 ; 277-1 ; 277134 ;
Abstract
A method of producing a hydrodynamic sealing element is disclosed wherein washer-like sealing elements may be partially sliced from a cylindrical billet and formed to have an axially extending inner portion adapted to sealingly engage a rotating shaft. The inside surface of the axially extending portion is grooved to facilitate the sealing action. Grooving is accomplished by axial withdrawal action of the same cutting element that partially slices and forms the sealing element.