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. 12, 1978
Filed:
Jun. 24, 1977
Harry Edwin Featherstone, Wooster, OH (US);
Walter Grant Sniff, Jr, Smithville, OH (US);
Orrville Products, Inc., Orrville, OH (US);
Abstract
A method of joining first and second sheet metal parts along a common seam formed from a first surface on the first part and a second surface generally matching the first surface and on the second part. These surfaces define therebetween random spaces of variable thickness when the surfaces are assembled in a generally abutting coextensive relationship. The method includes applying a non-hardenable layer of corrosion resistant material to at least one of the surfaces with the material being thixotropic, cohesive with the metal and capable of forming a heat insulating, pliable, coherent gel upon being subjected to a given temperature generally sufficient to melt the metal of the parts, placing the surfaces together to jointly form the common seam with the material filling the random spaces, holding the surfaces in the placed positions and then welding the surfaces together at a temperature at least as high as the given temperature along a weld line generally coextensive with the seam whereby a line of the gel of the material forms along and generally parallel to the weld line.