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:
Oct. 07, 1986
Filed:
Nov. 14, 1984
Applicant:
Inventors:
Masashi Nakano, Aichi, JP;
Takeo Ueda, Aichi, JP;
Assignee:
Nippon Oil and Fats Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42C / ;
U.S. Cl.
CPC ...
102217 ; 102200 ;
Abstract
A remote blasting system for exploding a number of explosives in a multiple-step manner including an oscillating unit for radiating an electromagnetic wave due to which A.C. currents are induced in receiving units some of which are directly connected to detonators and the remaining receiving units being connected to detonators via at least one switching unit which includes a switch and an actuating member for driving the switch. At the end of first excitation, the switch is closed and at the end of second excitation the detonator is blasted via the closed switch.