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. 29, 1992
Filed:
Nov. 09, 1983
Applicant:
Inventor:
Samuel S Ballard, Hollis, NH (US);
Assignee:
Lockheed Sanders, Inc., Nashua, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ; H04P / ;
U.S. Cl.
CPC ...
367151 ; 340557 ; 73657 ;
Abstract
In order to sense the presence of sound in a remote underwater location, a neutrally buoyant reflector (20) is deployed underwater, and a laser (12) disposed at a remote location aims coherent light at the reflector (20). A detector (24) senses the coherent light reflected from the reflector (20) and compares it in phase with coherent light split from the outgoing beam. The system then provides an indication of the presence of sound by, for instance, amplifying the result of the phase detection to a speaker (26).
Ballard, Samuel. (1992). Laser sound detector (U.S. Patent No. 5175713). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5175713
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile