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. 26, 1989
Filed:
Aug. 29, 1988
Applicant:
Inventor:
Joseph R Brown, Boonville, IN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42B / ;
U.S. Cl.
CPC ...
102333 ; 102312 ; 102333 ;
Abstract
A blasting plug used in conjunction with a drilled blasting hole and serving fill retaining purposes in a use condition. The blasting plug is an assembly of lightweight material, and serves as a substitute for inflatable air bags now in use and, thereby, represents a considerable cost reduction. Typically, the blasting plug is defined by plywood layers having one or more sections of plastic resin disposed therebetween. The invention presents an inexpensive blasting plug which satisfies operational needs.