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. 19, 1977
Filed:
Oct. 23, 1974
Finn Hannover, Wilmington, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A pipe fitting of organic polymeric material such as polyethylene is provided wherein said pipe fitting is of unitary construction and includes a first tubular body portion of substantially uniform internal and external diameters integrally connected to a tapered heat-expandable tubular body portion having an external diameter at its terminal end less than the external diameter of the first tubular body portion. A method for making said pipe fitting also is provided which includes placing a tubular structure of organic polymeric material into a mold having a molding surface corresponding to that of said pipe fitting and cold-forming said tubular structure by pressing said tubular structure in said mold.