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:
Nov. 11, 2025
Filed:
Mar. 09, 2022
Ejot SE & Co. KG, Bad Berleburg, DE;
Ralph Joerg Hellmig, Bad Laasphe, DE;
David Korn, Bad Laasphe, DE;
EJOT SE & CO. KG, Bad Berleburg, DE;
Abstract
The invention relates to a spring head screw assembly () incorporating a spring head screw () having a head () with a conical skirt () that widens towards the free end of a threaded shank which adjoins the head (), wherein the spring head screw assembly () has a washer () which is located between the skirt and the threaded part () of the shank () in an unthreaded part () of the shank that has a bolt diameter (d). The inner surface () of the skirt transitions into the shank at a radius (R), wherein the inner surface () forms a contact angle (α) with a support plane (E). The support plane is defined by the end of the skirt facing the free end of the screw and is orthogonal to the screw axis. The shank has, between the support plane and the radius in the transition to the skirt, a cylindrical region having the bolt diameter.