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:
Dec. 16, 2014
Filed:
Mar. 21, 2012
David M. Vanwie, Brookeville, MD (US);
Ibolja Cernak, Columbia, MD (US);
Andrew C. Merkle, Gaithersburg, MD (US);
David M. VanWie, Brookeville, MD (US);
Ibolja Cernak, Columbia, MD (US);
Andrew C. Merkle, Gaithersburg, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
A blast tube includes three portions and three diaphragms. The first portion has a first length and a first cross section. The second portion has a second length and a second cross section. The third portion has a third length and a third cross section. The first diaphragm is disposed between the second portion and the third portion and switches from a closed state to an open state at a first time. The second diaphragm switches from a closed state to an open state at a second time after the first time. The third diaphragm is disposed between the first portion and the second portion and switches from a closed state to an open state at a third time after the second time. The third portion is disposed between the first diaphragm and the second diaphragm.