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:
Feb. 24, 2004
Filed:
Apr. 05, 2002
Dennis Gallagher, Panama City, FL (US);
William Olstad, Panama City, FL (US);
Gram Holmes, Lynn Haven, FL (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An underwater swim board enables diver navigation under conditions of zero visibility. A rectangular member has a timer, depth gauge, and compass on its topside to provide a visual indication of time, depth and direction. An enhanced display module on the bottom side of the member contains a microprocessor to receive time, depth, and direction signals from separate electronic timer, depth transducer, and magnetic compass modules in the display module creates representative control signals. The display module also has a display screen and an LCD having variable backlight to vary its light intensity. The LCD receives the control signals and displays the information of the time, depth, and direction signals on the screen. A virtual image display lens mounted on the screen allows binocular viewing of the displayed information as magnified near-to-the-eye apparent screen images for a diver holding a dive mask faceplate against the screen.