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. 16, 1993
Filed:
Jan. 29, 1992
Applicant:
Inventor:
Patrick Carney, Dubuque, IA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F42B / ; C06B / ;
U.S. Cl.
CPC ...
102312 ; 102313 ; 149 92 ;
Abstract
A method of quarry blasting is provided wherein boreholes are loaded with alternating layers of ANFO and AP propellant. A primary charge is used to detonate the composition column. The low velocity propellant enhances the ANFO explosion, and produces high pressure gas and high temperatures for breaking and casting the rock, while minimizing fly rock, ground vibrations, and air noise.