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:
Dec. 30, 1986
Filed:
Jun. 20, 1984
Bohdan Gnyra, Kingston, CA;
Alcan International Limited, Montreal, CA;
Abstract
A method is described for joining an inner metal pipe with an outer surrounding metal tubular portion by means of explosive welding in which a contact anvil is placed inside the inner pipe to support it during welding. With the anvil in place, the pipes are subjected to explosive welding such that the outer surface of the inner pipe is joined metallurgically to the inner surface of the outer tubular portion. According to the novel feature, the anvil is made from hydrated aluminum sulphate, preferably a water soluble commercial alum, which not only disintegrates during welding but is also water soluble.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile