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:
Jan. 21, 1997
Filed:
Sep. 07, 1993
Patrick Carney, Dubuque, IA (US);
Other;
Abstract
A method and composition for blasting wherein boreholes are loaded with pre-determined quantities of a high velocity explosive and a low velocity explosive. The high velocity explosive extends in a substantially continuous matter for a pre-determined length along the borehole column and a low velocity propellant is placed at pre-determined locations within the high velocity explosive column such that the high velocity explosive detonates substantially along its length in the column thus initiating a low velocity explosion at various predetermined points at the location of the low velocity explosive. The resulting explosion produces minimum ground vibration and air shock waves while substantially breaking and casting the rock material with minimal flyrock.