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:
Aug. 12, 2003
Filed:
Aug. 18, 2000
Applicant:
Inventors:
Herman Grossberndt, Bad Laasphe, DE;
Gottfried König, Bad Laasphe, DE;
Assignee:
EJOT Verbindungstechnik GmbH & Co., Bad Laasphe, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 2/500 ;
U.S. Cl.
CPC ...
F16B 2/500 ;
Abstract
A cold-rolled screw which is intended for screwing into plastic has a narrow self-tapping thread with an inflection on at least one side of the thread so that the inner flank angle is smaller than the outer flank angle but still approximately equal to or larger than one third of the outer flank angle. In a second aspect, the screw thread has an end surface spaced from the free end of the screw to guide the plastic displaced by the thread during threading of the screw.