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:
Jun. 09, 1987
Filed:
Apr. 24, 1986
Applicant:
Inventors:
Axel B Abrahamsson, Warren, MI (US);
Eugene J Bistrick, Warren, MI (US);
Harvey J Yera, Richmond, MI (US);
Margaret Wieczorek, Mt. Clemens, MI (US);
Assignee:
National Broach & Machine Company, Mt. Clemens, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23F / ;
U.S. Cl.
CPC ...
407 16 ; 407 18 ; 407 19 ;
Abstract
A tooth broach designed for use with thin workpieces having its teeth arranged in circumferentially extending sets in each of which the teeth are arranged in groups of one or more teeth, and gaps devoid of teeth between adjacent groups. The teeth are further arranged in longitudinally extending series, in which consecutive teeth in each series are separated by gaps in the adjacent sets. This provides for reduced axial spacing between axially adjacent sets of teeth to maintain cutting action at all times with a thin workpiece.