Expansible plug

US5431516A · kind A · utility

Assignee

• fischerwerke Artur Fischer GmbH & Co. KG · DE

Inventors

• Manfred Haage · Dornstetten, DE
• Werner Heinzelmann · Alpirsbach, DE

Key dates

• Filing date: May 3, 1994
• Grant date: Jul 11, 1995
• Expiry date: May 3, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B13/124
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An expansible plug comprises a closed shank section formed as a shank sleeve provided with a screw channel and a longitudinal divided expansible shank, the shank being formed by two shank halves provided with staggered expansible elements which interlock to form a closed expansion region, the expansible elements being offset relative to one another and having bores arranged eccentrically relative to a center line of the expansible shank and overlapping so that an overlapping region forms a constricted screw channel, the expansion region tapering conically toward a plug tip, and one of the shank halves being connected to the shank sleeve in a joining region by a secure joint.