Method of fixation of anchoring bolts in boreholes

US4525103A · kind A · utility

Assignee

• Bergwerksverband GmbH · DE

Inventors

• Frank Meyer · Essen, DE
• Wolfgang Cornely · Gladbeck, DE
• Hans Mehesch · Essen, DE

Key dates

• Filing date: Dec 29, 1982
• Grant date: Jun 25, 1985
• Expiry date: Dec 29, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B13/143
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Method for bonding of anchoring bolts in boreholes, in which an anchoring bolt is pushed with a rotary motion into a twin-chamber cartridge, one compartment of which is filled with a polyisocyanate component and the other one with a hydroxyl component, prepolymer from the conversion of polyisocyanates with one or several difunctional polyols of the molecular weight range 800-5000, preferably 1600-3000, being used as polyisocyanate component.