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:
Sep. 01, 1981
Filed:
Nov. 16, 1979
Roy W Batcheller, West Covina, CA (US);
CraneVeyor Corporation, South El Monte, CA (US);
Abstract
A tubular pipe rail jointing system consisting of posts and rails makes use of fittings on the posts providing sleeves into which ends of the tubular pipe rails are telescopingly received. For effective fabrication and erection it is preferable to cut the tubular pipe rails to proper length on the site. To assure a rugged installation, a dimple is pressed into the sleeve with a pressure punch of special construction. A cradle forming part of the tool fits around half the circumference of the sleeve while the punch under high pounds per square inch pressure is pressed progressively into the sleeve, at a point diametrically opposite the cradle, until material of the sleeve, deformed by the punch, is forced into a depression formed simultaneously in the end of the tubular pipe rail. The assembly described becomes interlocked by what has been termed a swedge lock.