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:
Oct. 01, 1996
Filed:
Nov. 23, 1994
Applicant:
Inventors:
Gene E Allebach, Tiffin, OH (US);
Dennis N Roush, Tiffin, OH (US);
Assignee:
The National Machinery Company, Tiffin, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21H / ;
U.S. Cl.
CPC ...
72 134 ; 72 3101 ; 72 90 ;
Abstract
A thread rolling machine in which the dies are monitored for a mismatch condition by a proximity sensor responsive to displacement of the moveable die in a direction parallel to the axis of the workpiece. This displacement, which occurs when a mismatch condition exists, is permitted by the running clearances in the slide carrying the moveable die. When more than a negligible displacement occurs, corrective action can be taken to reject out of specification workpieces and to adjust the relative positions of the dies to maintain them in a matched condition.