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:
Jun. 15, 2004
Filed:
Sep. 26, 2001
John W. Henry, IV, Annapolis, MD (US);
David B. Larrabee, Annapolis, MD (US);
William F. Flickinger, Arnold, MD (US);
Michael J. Grady, Ridley Park, PA (US);
Debra M. Kenney, Media, PA (US);
Kevin E. Crouchley, Pasadena, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An acoustic projector device having a piston exposed to pressure balanced air and water in an acoustically ideal position thereof within a piston chamber enclosing sleeve disposed in an outer housing to which deaerating water is selectively supplied in surrounding relation to the piston chamber sleeve while in communication with one side of the piston through axial slots in the sleeve uncovered by displacement of the piston from said acoustically ideal position.