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. 01, 2004
Filed:
Aug. 05, 2002
Applicant:
Inventors:
Roxanne Dittrich, Houston, TX (US);
Taggart William Albert Mills, San Antonio, TX (US);
Assignee:
Coltec Industrial Products LLC, Newton, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 2/708 ;
U.S. Cl.
CPC ...
B32B 2/708 ;
Abstract
This invention relates to methods for manufacturing large PTFE parts by compression molding followed by sintering. The method comprises layering modified and unmodified PTFE in a mold, and compressing the layers to form a preform part. Once the preform parts are formed, they are assembled such that the areas of preform parts which are to be bonded together are the modified PTFE sections. The parts are then sintered and the modified PTFE sections bond together creating a strong, durable, bond.