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. 11, 1995
Filed:
Aug. 27, 1993
Applicant:
Inventor:
Danny R Sink, Chesterfield County, VA (US);
Assignee:
Brenco Incorporated, Petersburg, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264161 ; 264262 ; 264266 ; 425112 ; 425123 ; 425D / ;
Abstract
Compression molding of elastomer to form an annular sealing lip bonded to a sintered polytetrafluoroethylene line over the lip, and to bond the elastomer to an annular metal case for the seal. The mold elements, anchoring the inner margin of the liner preform during molding, slide against each other for concentric alignment, bend the metal case to control back pressure on the elastomer being applied to the liner, and form a thin annular link of elastomer between the seal formed in the mold and the excess elastomer to be trimmed from the seal.