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:
Apr. 02, 2002
Filed:
Oct. 05, 1999
Applicant:
Inventor:
William H. Nedderman, Jr., Middletown, RI (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/34 ;
U.S. Cl.
CPC ...
G01D 5/34 ;
Abstract
A system is provided for detecting movement of an object underwater. A housing positioned underwater defines a gas-filled cavity receiving an optical reflector that is fixedly coupled to an object underwater. At least one optical sensor is adjustably positioned with its optical sensing portion located in the cavity a desired distance from the optical reflector. Movement of the object underwater causes movement of the optical reflector that is detected by the optical sensing portion.