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:
Aug. 28, 1979
Filed:
Apr. 03, 1978
Applicant:
Inventor:
Talbert D Connell, Conroe, TX (US);
Assignee:
Crutcher Resources Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228 50 ;
Abstract
An improved back-up pad apparatus for use in externally welding abutting ends of pipe is formed of hard anodized aluminum material and comprises a plurality of arcuate back-up pads for interior positioning to face the weld. Each arcuate pad is mounted on a shoe for biased engagement with the interior cylindrical surfaces of the pipes. Intermediate shoes carrying cylindrically surfaced members are provided at the rounded ends of adjacent back-up pads.