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:
Jul. 22, 2008
Filed:
Mar. 09, 2007
Applicants:
Frank W. Bechtel, Jr., Roscoe, IL (US);
Timothy L. Day, Harvard, IL (US);
Joseph F. Downey, St. Charles, IL (US);
Michael P. Glynn, Lamont, IL (US);
Inventors:
Frank W. Bechtel, Jr., Roscoe, IL (US);
Timothy L. Day, Harvard, IL (US);
Joseph F. Downey, St. Charles, IL (US);
Michael P. Glynn, Lamont, IL (US);
Assignee:
Illinois Tool Works Inc., Glenview, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21H 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A self-tapping screw includes a head, a shaft, a tapered end and a rounded distal tip. A thread includes a thread start on the tapered end. The axial position of the thread start and a first full thread, the radius of the round distal tip and the diameter of the tapered end at the thread start are controlled in relation to the screw size for consistent, improved screw performance.