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:
Apr. 11, 1989
Filed:
Feb. 26, 1988
Applicant:
Inventor:
Dennis Mraz, Saskatoon, CA;
Assignee:
Engineered Instruments, Inc., , CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; E21B / ;
U.S. Cl.
CPC ...
411 82 ; 411258 ; 405261 ; 52704 ;
Abstract
Anchor device for securing a rock bolt in a borehole, comprising an elongated cage having a perforated elongated wall confining an elongated chamber containing a bonding means for bonding the rock bolt within the borehole, the cage having a trailing end adapted to mount the anchor device onto the leading end of a rock bolt for insertion into the borehole.