Patent · US Expired

Fastener driving head

US6722830B2 · kind B2 · utility

9Cited by

4References

9Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Hubert Forster · Moorenweis, DE
Michael Werner · Hersbruck, DE
Franz Huber · Türkheim, DE

Key dates

Filing date	Aug 2, 2002
Grant date	Apr 20, 2004
Priority date	—
Expiry date	Aug 2, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S411/959
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A fastener is formed of an axially extending shaft (2) and a driving head on the end directed away from the setting direction, and has on its underside or first side (9) for the prevention of unintended loosening, a plurality of webs (12) extending radially from the longitudinal axis (L) of the shaft up to the external periphery (11) of the underside (9). The webs (12) having a substantially trapezoidal cross-section, are limited by a face surface (13) on the underside (9), extending between two flank surfaces.

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