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. 23, 2021
Filed:
Aug. 05, 2019
Newfrey Llc, New Britain, CT (US);
Matthias Wissling, Giessen, DE;
Frank Wilhelm, Giessen, DE;
Paul Bartig, Giessen, DE;
Paul Hez, Giessen, DE;
NEWFREY LLC, New Britain, CT (US);
Abstract
A punch rivet for joining two workpieces, has a head and a shank. The shank is hollow with a shank internal diameter (D), a shank external diameter (D) and a shank end face. On the shank end face is a ring cutting edge with diameter (D) that is smaller than the external diameter (D) but greater than the internal diameter (D). The ring cutting edge is radially spaced both from the shank external diameter (D) and from the shank internal diameter (D) by at least 20% of the radial shank wall thickness (M). And the ratio D/Dof shank internal diameter Dto shank external diameter Dis smaller than 0.6. And the external diameter (D) merges into an external circumference of the head by a second profile, which defines an underhead radius (R), and the ratio of Rto D(R/D) is smaller than 0.13.