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:
Feb. 04, 2003
Filed:
Dec. 05, 2000
Applicant:
Inventors:
Helmut Glimpel, Lauf, DE;
Dietmar Maier, Lauf, DE;
Dietmar Liebau, Pommelsbrunn, DE;
Rainer Fritsch, Aachen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J 1/302 ;
U.S. Cl.
CPC ...
B21J 1/302 ;
Abstract
A thread rolling tap including a stem portion, and a thread forming portion having a body with a plurality of thread turns formed on the body and including a front entrance region and a guide region, with the thread turns having each, in the front region in vicinity of the body, inclined pressure flanks forming side surfaces of an acute angle and connected by an outer, arranged radially outwardly with respect to the body, pressure surface formed as a flattening having opposite rounded edges extending along a circumference of a respective thread turn.