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. 07, 1977
Filed:
Nov. 14, 1975
Applicant:
Inventor:
Edward A Clavin, Houston, TX (US);
Assignee:
Midcon Pipeline Equipment Co., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B / ; B21D / ;
U.S. Cl.
CPC ...
72466 ; 72392 ; 269 481 ;
Abstract
Internal mandrel for use in bending the ends of pipes, wherein a hydraulic cylinder actuates a system of levers and toggles to apply force across the interior of an end of a pipe in the direction in which the pipe is to be bent to prevent distortion and collapse of the pipe during bending adjacent to its ends.