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. 01, 1980
Filed:
Jun. 10, 1977
Applicant:
Inventor:
Erik V Lavon, Harovagen, SE;
Assignee:
Atlas Copco AB, Nacka, SE;
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299-1 ; 239101 ; 299 17 ;
Abstract
A hard compact material, such as rock, is broken by forcing an elongated mass body of relatively incompressible fluid, such as water, against the material to be broken. The mass body is caused to impact the material at a momentum necessary for breaking the material. The momentum is generated by supplying the fluid to a storage chamber against the effect of a thrust load acting upon the fluid in the storage chamber. When a sufficient amount of fluid has been supplied the fluid in the storage chamber is forced toward the material to be broken by the effect of the thrust load.