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.

Date of Patent:
Mar. 24, 2015

Filed:

Jun. 07, 2012
Applicants:

Martin Cawood, Johannesburg, ZA;

AT Jacobs, Johannesburg, ZA;

Paolo Ettore Pastorino, Johannesburg, ZA;

Diedrick Kapp, Johannesburg, ZA;

Nicholas Marvin, Johhanesburg, ZA;

David Charles Tyrer, Johannesburg, ZA;

James William Sheppard, Johannesburg, ZA;

Brendan Robert Crompton, Johannesburg, ZA;

Inventors:

Martin Cawood, Johannesburg, ZA;

At Jacobs, Johannesburg, ZA;

Paolo Ettore Pastorino, Johannesburg, ZA;

Diedrick Kapp, Johannesburg, ZA;

Nicholas Marvin, Johhanesburg, ZA;

David Charles Tyrer, Johannesburg, ZA;

James William Sheppard, Johannesburg, ZA;

Brendan Robert Crompton, Johannesburg, ZA;

Assignee:

Giddicca (Pty) Ltd, Johannesburg, ZA;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21D 21/00 (2006.01); E21D 20/00 (2006.01); E21D 20/02 (2006.01);
U.S. Cl.
CPC ...
E21D 20/025 (2013.01); E21D 20/026 (2013.01);
Abstract

A rock anchor includes an elongate tubular body which extends between a first end and an opposing second end and a cartridge contains a multi-component adhesive system in the tubular body. The cartridge has a rigid tubular housing within which at least one compartment is defined, and in which is contained an adhesive component of the system. The at least one compartment yields to volumetrically reduce under fluid pressure created by a fluid input into the housing, to thereby extrude the adhesive components.


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