Wood screw with intermediate thread sections tapering to the front

US10480560B2 · kind B2 · utility

Assignee

• ADOLF WÜRTH GMBH & CO. KG · DE

Inventors

• Rainer Eckert · Bad Neustadt an der Saale, DE
• Andreas Wunderlich · Wenzenbach, DE

Key dates

• Filing date: Jun 25, 2014
• Grant date: Nov 19, 2019
• Expiry date: Aug 31, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B25/0078
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Wood screw for predrilling-freely inserting into a wood base, in particular into a massive wood base, wherein the wood screw comprises a shaft portion with a thread which is self-cutting in wood, a screw head which is connected to the shaft portion directly or indirectly at a back side, and a screw tip which is connected to the shaft portion directly or indirectly at a front side, for predrilling-freely penetrating into the wood base, wherein at the shaft portion between neighboring thread turns, portions are formed which taper towards the screw tip.