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:
Mar. 06, 1990
Filed:
Jan. 13, 1989
Robert E Obrecht, Bloomfield Hills, MI (US);
Edward J Waltonen, Southfield, MI (US);
REO Hydraulics Pierce and Form, Inc., Detroit, MI (US);
Abstract
A clinching tool including a punch and a die assembly. The die assembly includes a collet, an anvil pin, and a backing plate. The collet is formed of a relatively thin flat plate and includes a clinching section adjacent one end of the plate and a mounting section adjacent the other end of the plate. A split extends from the clinching end of the plate centrally toward the mounting end of the plate and arcuate cutouts are provided along the opposite side edges of the split to define a die opening intermediate the ends of the split. The working face of the backing plate is positioned against the face of the collet plate remote from the punch and the anvil pin is positioned in the die opening with one end thereof bearing against the working face of the backing plate and the other end thereof inset with respect to the face of the collet plate near the punch. The split defines die portions on opposite sides of the split which move laterally outwardly in cantilever fashion in response to downward movement of the punch as the material of the sheets to be joined flows into the die cavity defined by the die opening and the inset end of the anvil pin. The low profile provided by the die assembly allows the clinching tool to be utilized in relatively tight confines such as in a narrow channel section defined by the sheets to be joined.