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:
May. 19, 1987
Filed:
Jan. 06, 1986
Applicant:
Inventor:
Richard H Corrette, Cleveland, OH (US);
Assignee:
Colt Industries Operating Corp., Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23G / ;
U.S. Cl.
CPC ...
407 24 ; 10102 ; 72 88 ; 407 29 ; 409 65 ;
Abstract
Thread rolling dies for pointed fasteners having an improved working face contour which promotes displacement of blank material from the blank point area at an early stage in the thread rolling sequence to avoid excessive pressures in the die and blank at the finishing stages of the rolling sequence. Thread cutters include an extend section that presurfaces the rise angle of the die working face to produce uniform, improved thread profiles.