Anchor member secured in place by a permanently hardenable mass

US4993900A · kind A · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Robert Hugel · Kaufering, DE
• Erich Leibhard · Munich, DE

Key dates

• Filing date: Apr 9, 1987
• Grant date: Feb 19, 1991
• Expiry date: Apr 9, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S411/93
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An anchor member to be fixed in a borehole by a permanently hardenable mass is formed as a sleeve-like member with the outside surface deformed inwardly at axially and circumferentially spaced areas so that the inside surface is deformed into a multi-sided cross-section. The inside surface can be four-sided with the inwardly deformed areas increasing the anchoring effect and preventing turning of the member when a fastening element is threaded into its trailing end. The sleeve-like member is closed at its leading end to avoid the hardenable mass from flowing into the member.