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:
Apr. 29, 2014
Filed:
Dec. 28, 2010
Applicants:
Guillermo Monteil, San Jose, CR;
Samuel Gjorven, San Jose, CR;
Inventors:
Guillermo Monteil, San Jose, CR;
Samuel Gjorven, San Jose, CR;
Assignee:
S & B Technical Products, Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 51/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved pipe belling process is shown which features a mandrel having a specially designed backup or forming collar. The backup collar has an outer contact surface which forms an undulating pattern when viewed in cross section. The undulating surface reduces the contact area between the outer contact surface of the collar and the lip region of a plastic pipe being belled, thereby lowering the coefficient of friction that exists between the pipe lip region and the collar.