The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1986
Filed:
Feb. 23, 1984
Onni Issakainen, Tampere, FI;
Pertti Heikkila, Tampere, FI;
Oy Tampella AB, Tampere, FI;
Abstract
A method for performing rock bolting, according to which a cementing agent is fed into a hole drilled into the rock, whereupon a bolt is fitted into the drill hole for supporting the rock. In order to permit use of a rapidly hardening cementing agent and mechanization of the bolting, a number of capsules (16) are fed to the bottom of the drill hole, which capsules contain a preferably two-component cementing agent which hardens rapidly when the components are mixed together, and a conventional cementing agent (12) hardening slowly and/or protecting the bolt against corrosion is fed into the remaining portion of the drill hole by means of a feeding pipe (5). The equipment for carrying out the method comprises a guide (14) for shifting a capsule/capsules (16) form a charging station (15) into the drill hole, means (22) for moving the guide axially back and forth, means (17) for shifting the capsule/capsules (16) along the guide (14), and a nozzle (9) to be positioned at the mouth of the drill hole, through which nozzle both the guide (14) and the feeding pipe (5) can be shifted alternatingly into the drill hole.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile