Expansible plug to be percussion anchored in a borehole that tapers outward at an inner end thereof

US4968199A · kind A · utility

Assignee

• fischerwerke Artur Fischer GmbH & Co. KG · DE

Inventors

• Manfred Haage · Dornstetten, DE
• Artur Fischer · Pfalzgrafenweiler, DE

Key dates

• Filing date: Oct 5, 1989
• Grant date: Nov 6, 1990
• Expiry date: Oct 5, 2009

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B13/126
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An expansible plug to be percussion anchored in a borehole that tapers outward at an inner end thereof comprising an expansible sleeve, expansible segments arranged at an expandable end of the expansible sleeve, an expander member for penetrating into a converging inner bore of the expansion sleeve to expand the expansible segments, and at least one spacing element arranged at an end side of the expansible segments.