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:
Jul. 20, 2004
Filed:
Jan. 17, 2002
James Kelly Thomas, San Antonio, TX (US);
Michael J. Lowák, San Antonio, TX (US);
Adrian J. Pierorazio, San Antonio, TX (US);
Quentin A. Baker, San Antonio, TX (US);
Ming Jun Tang, Andover, MA (US);
James W. Wesevich, San Antonio, TX (US);
Michael A. Polcyn, San Antonio, TX (US);
Baker Engineering and Risk Consultants, Inc., San Antonio, TX (US);
Abstract
A shock tube comprises a driver section, an expansion section connected to the driver section, and an extension connected to the expansion section. Shock absorbent material is disposed within a cavity defined by the driver section and extension section. At least one active vent is disposed over respective holes in the extension section that are connected to the cavity. The extension section is adjustable between one of at least two positions such that a length of the extension section in a first position is longer than a length of the extension section in a second position. The length of the gas column contained within the driver section can also be adjusted by the position of a movable bulkhead.