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:
Sep. 12, 2023
Filed:
Jun. 21, 2019
Ejot Gmbh & Co. KG, Bad Berleburg, DE;
Michael Achenbach, Breidenbach, DE;
Juergen Behle, Bad Laasphe, DE;
Ralf Birkelbach, Bad Laasphe, DE;
Volker Dieckmann, Bad Berleburg, DE;
Frank Dratschmidt, Bad Berleburg, DE;
Jan Hackler, Bad Berleburg, DE;
Rene Gerber, Fronhausen, DE;
Ralph J. Hellmig, Bad Laasphe, DE;
Ilir Selimi, Biedenkopf, DE;
Stephan Weitzel, Bad Laasphe, DE;
EJOT GMBH & CO. KG, Bad Berleburg, DE;
Abstract
A self-tapping screw () comprising a drive () and a shank () bearing a thread comprising a main thread (), wherein the main thread () has a maximum main thread external diameter (D) and a cutting area (F) and a supporting area (T) following in the direction of the drive (), wherein the shank () has a threaded end () at an end opposite the drive (), with the screw end () having a diameter (DE) of at least 20% of the maximum main thread external diameter (D), The shank further has, in the region of the screw end (), a tap flute (), wherein the tap flute () comprises at least two tapping thread turns () which attain, in their external diameter (D), no more than 90% of the maximum main thread external diameter (D) and form a tap region in which the tapping thread turns () have the same diameter development, and in addition in that the diameter of the main thread () in the tap flute region (AB) is less than or equal to the diameter (D) of the tapping thread turns ().