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:
Nov. 24, 1987
Filed:
Oct. 23, 1986
Applicant:
Inventor:
Jarmo Leppanen, Ylojarvi, FI;
Assignee:
Oy Tampella AB, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ;
U.S. Cl.
CPC ...
405303 ; 401261 ; 401265 ; 13735512 ; 13735516 ; 141367 ; 141387 ; 222530 ; 242 / ; 226199 ; 264 31 ; 405260 ; 405269 ; 425 59 ; 425 64 ;
Abstract
The invention relates to a method and a device for guiding a concrete feeding hose in connection with the grout feedin rock bolting. The concrete feeding hose is therein passed by means of a feeder froma reel into a guide head supported on a feeding beam of a drilling equipment and further through the guide head into a hole drilled in the rock, and is passed back on to the reel in proportion as the hole is filled. In order to protect the feeder of the concrete feeding hose against dirt and mechanical damage, the concrete feeding hose is pushed into the guide head through a flexible guiding means.