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:
Jan. 30, 2001
Filed:
Apr. 23, 1999
Applicant:
Inventor:
Erich Palm, Au, CH;
Assignee:
SFS Industries Holding AG, Heerbrugg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 2/300 ;
U.S. Cl.
CPC ...
F16B 2/300 ;
Abstract
In a screw for fastening metal sections (,) to a substructure (,), a shank (,) is provided with a threaded portion (,) and a drive portion (,) for applying a driving device. The portion of the shank (,) adjacent to the drive portion (,) flares conically toward the drive portion (,). The thread (,) engages in the substructure (,), whereby the conical portion (,) is pulled into contact with the section (,) and presses it against the substructure (,). By virtue of appropriate friction, the torque is increased to an appropriate level, and so torque-dependent stopping of the driving action can be achieved.