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:
Sep. 27, 1983
Filed:
Oct. 28, 1981
Applicant:
Inventor:
Goran H Jysky, Nykoping, SE;
Assignee:
Atlas Copco AB, Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
E21C / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
175 66 ; 55-1 ; 55 96 ; 55315 ; 5538 / ;
Abstract
In rock drilling, the dust-laden flushing air from the borehole is drawn through a coarse dust separator and a filter unit. A mixing apparatus is screwed to the bottom of the filter unit and in accordance with this invention the dust that falls from the filter unit is fed in batches to a mixing chamber of the mixing apparatus in which it is mixed with a liquid binder. The dust from the coarse dust separator is directly dumped on the ground and the fine dust from the mixing apparatus is also dumped on the ground.