Patent · US Active

Punch rivet and method for producing a punch-riveted joint

US10927875B2 · kind B2 · utility

0Cited by

9References

10Claims

0Family size

Assignee

NEWFREY LLC · US

Inventors

Matthias Wissling · Gießen, DE
Frank Wilhelm · Marshfield, US
Paul BARTIG · Gießen, DE
Paul Hez · Gießen, DE

Key dates

Filing date	Aug 5, 2019
Grant date	Feb 23, 2021
Priority date	—
Expiry date	Sep 23, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B19/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A punch rivet for joining two workpieces, has a head and a shank. The shank is hollow with a shank internal diameter (D3), a shank external diameter (D1) and a shank end face. On the shank end face is a ring cutting edge with diameter (D4) that is smaller than the external diameter (D1) but greater than the internal diameter (D3). The ring cutting edge is radially spaced both from the shank external diameter (D1) and from the shank internal diameter (D3) by at least 20% of the radial shank wall thickness (M5). And the ratio D3/D1 of shank internal diameter D3 to shank external diameter D1 is smaller than 0.6. And the external diameter (D1) merges into an external circumference of the head by a second profile, which defines an underhead radius (R1), and the ratio of R1 to D1 (R1/D1) is smaller than 0.13.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.