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:
Nov. 21, 1978
Filed:
Oct. 03, 1977
Applicant:
Inventors:
Richard T Zollweg, Garden Grove, CA (US);
Homer L Eaton, Leucadia, CA (US);
Assignee:
Eaton-Leonard Corporation, Santa Ana, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72154 ; 72155 ;
Abstract
In a machine for draw bending pipe, a long pressure die that moves with the pipe during the bend is provided with a retractable rear section. Both sections are used for a large degree of bend but when a bend of lesser degree is made near the end of the pipe, interference between the pipe grasping chuck and the long pressure die is avoided by retracting the rear pressure die section.