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. 04, 2002
Filed:
Jun. 08, 2000
Applicant:
Inventors:
Michael Stoick, Prior Lake, MN (US);
Wayne A. Asp, St. Bonifacious, MN (US);
Assignee:
Entegris, Inc., Chaska, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B29C 3/348 ; B29C 4/544 ;
U.S. Cl.
CPC ...
B29C 3/348 ; B29C 4/544 ;
Abstract
A method and apparatus for producing molded fluoropolymer sweep elbows with straight threadable ends that minimizes distortion of the fitting. The apparatus comprises a mold core or insert that is comprised of multiple curved segments which are retracted from the mold individually. The mold core is divided into two or more pieces on a curved plane parallel to the curved central axis of the core and the segments thus formed are retracted from the mold by a combination of arcuate and translational motions to avoid distortion of the fitting ends.