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:
Jul. 05, 1977
Filed:
Jan. 02, 1976
Arthur L Troutner, Boise, ID (US);
Trus Joist Corporation, Boise, ID (US);
Abstract
A sequencing die and method for forming truss webs or links from metal tubing includes as a first step providing a continuous length of tubing to a die assembly operably engaged by a mechanical press wherein the end portion of the tubing is flattened by flattening means to form a first flattened web end. Sequentially following without any further flattening the web end is punched by punching means located in the flattening means to form a cross pin receiving hole and a terminal end portion. The tubing is then advanced in the die assembly whereupon it is again flattened and punched sequentially by the flattening and punching means respectively to form a second web end. Gripping means located on the sequencing die outwardly adjacent the die assembly grip the tubing during the forming of the webs. They are configured for movement relative to the die assembly to allow lateral displacement of the tubing during flattening aligning the web ends with the longitudinal centerline of the tubing. Indexing means allows longitudinal indexing of the first web end relative to the die assembly allowing accurate separation of the second web end for consistent predetermined web lengths. It includes antitwisting means to prevent angular twisting of the web ends relative one another during forming.