Screw having discontinuous scraping edges

US10641310B2 · kind B2 · utility

Assignee

• Würth International AG · CH

Inventors

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

Key dates

• Filing date: May 3, 2016
• Grant date: May 5, 2020
• Expiry date: Jul 2, 2036

Classification

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

Abstract

A screw has a shaft section which extends axially, a screw thread at the shaft section, which screw thread has thread turns that extend radially starting from the shaft section, a screw tip section which connects to the shaft section, at least one first scraping edge at the screw tip section, and at least one second scraping edge in a region of the shaft section adjacent to the screw tip section. The at least one first scraping edge and the at least one second scraping edge are spaced at a distance from each other and extend in an axial direction over different areas of the screw.