Screw and drive element with chamfer

US10385902B2 · kind B2 · utility

Assignee

• ADOLF WÜRTH GMBH & CO. KG · DE

Inventors

• Andreas Wunderlich · Wenzenbach, DE
• Johannes Starke · Weinsberg, DE

Key dates

• Filing date: Nov 26, 2014
• Grant date: Aug 20, 2019
• Expiry date: Jul 26, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B25/103
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Screw for introducing into an underground, comprising a screw shaft and a screw head which is adjoining the screw shaft, in which a drive is formed for rotary driving the screw by a drive element, wherein the drive comprises a hollow wing section at an outer side of the screw with a circular hollow core and hollow wings which are provided along the circumference, wherein the drive comprises a hollow recess section at an inner side of the screw, and wherein the drive at a transition between the hollow wing section and the hollow recess section comprises a chamfer section whose outer surface is angled with respect to an outer surface of the hollow wing section and with respect to an outer surface of the hollow recess section.