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:
Oct. 11, 1977
John R Beach, Elmhurst, IL (US);
L Peter Sauer, Glenview, IL (US);
William J Haraden, Libertyville, IL (US);
Signode Corporation, Glenview, IL (US);
Abstract
A gritless seal, a method for making the seal, and a method for forming a joint with the seal between overlapped ligature segments is provided. The inner gripping layer is brittle and has a hardness greater than that of the outer, ductile layer. In forming the joint, the seal is disposed about the overlapped ligature segments and is folded, squeezed, and/or crimped about the segments under pressure sufficient to deform the outer, ductile layer and produce fracture cracks in the inner gripping layer which present sharp edges to engage and hold the surfaces of the overlapping ligature segments. The interior of the sheet steel seal is case hardened by known cyaniding techniques.