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:
May. 14, 2002
Filed:
Sep. 06, 2000
Michael R. Ryerson, Fall River, MA (US);
Paul E. Moody, Barrington, RI (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Two-way pressure release valves in a shutter reduce the force needed to rotate it from a torpedo tube while the submarine is underway at high speeds. The valves are each mounted in a separate aperture in the shutter and have a pair of biasing springs that hold opposite end surfaces coplanar with outer and inner surfaces of the shutter to prevent generation of objectionable flow-noise while underway. When the shutter is rotated to expose a muzzle door of a torpedo tube, the valves are automatically displaced by pressure differentials created to free pathways for pressure equalization. The water flowing through the valves eliminates the pressure differentials, and consequently, reduces the total amount of force that would otherwise be needed to rotate the shutter.