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:
Jun. 27, 1989
Filed:
Dec. 21, 1987
Applicant:
Inventors:
John A Coetzee, Alberton, ZA;
Ernest E Cranko, Carletonville, ZA;
Roger K Moore, Redditch, West Midlands, GB;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21D / ;
U.S. Cl.
CPC ...
166285 ; 405261 ;
Abstract
Loose particulate material A, preferably housed in a capsule C, is urged towards the blind end of a borehole H. An anchor element 1 having an end plate 3 or a head and a disc spaced from the head is driven into the hole with rotation to compact the particulate material to form a load bearing annulus. The material is selected to be of a defined aggregate crushing value.