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:
Feb. 06, 2001
Filed:
Mar. 29, 1999
Stefan Baumgartner, Strongsville, OH (US);
SFS Industrie Holding, AG, Heerbrugg, CH;
Abstract
In a fastening element (,) for fastening insulating sheets and if necessary sealing sheets to a solid base there are provided a screw (,) and a large-surface washer (,), wherein the screw (,) has a drilling point (,), a screw shank (,) provided at least partly with a threaded region (,) as well as a screw head (,). The washer has a central hole (,) for introducing the screw shank. A tubular extension (,) aligned axially parallel to the screw shank (,) to be inserted adjoins the central hole (,) in the washer (,). Sections or parts of this extension (,) engage by plastic deformation in the threaded region (,) of the screw shank (,) to achieve preassembled retention of the washer (,) and screw (,).