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:
Nov. 19, 1996
Filed:
Jan. 09, 1995
Ronald G Rosene, Coon Rapids, MN (US);
Richard L Timp, Vadnais Heights, MN (US);
Wilson Tool International, Inc., White Bear Lake, MN (US);
Abstract
A self-locking workpiece-deforming tool for use in mechanical punch presses in which the ram cannot maintain continuous pressure against the tool in a depressed position. The tool includes an elongated punch guide having an interior surface defining a chamber extending therethrough. A punch body having upper and lower segments is partially received within the chamber for reciprocable axial movement with respect to the guide between raised and depressed positions. A lower segment of the punch body carries a rotatable workpiece-deforming roller. The punch assembly includes a positioning device for sustaining the body and the roller in a depressed position without requiring the ram of the press to exert continuous downward pressure on the tool. The positioning means locks the body in the roller in the depressed position upon a momentary strike by the ram, and releases the body and roller upon subsequent momentary strike by the ram.