Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Reexamination Certificate
2011-01-18
2011-01-18
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
C367S142000, C367S151000
Reexamination Certificate
active
07872946
ABSTRACT:
The autonomous waterproof electronic signaling device disclosed comprises an activator; a signal emitter, said signal emitter to emit a primary signal upon activation of said activator, said signal emitter comprising one or more of the following: a hydrophone, a siren, a speaker, or a transducer; and a head assembly, said head assembly positioned so as to alter at least a portion of said primary signal producing a notification signal.
REFERENCES:
patent: 3351901 (1967-11-01), Padberg, Jr.
patent: 3620326 (1971-11-01), Hogge
patent: 4604737 (1986-08-01), Hoffman
patent: 4823384 (1989-04-01), Lindsay
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Nave, Dr. C. Rod. Georgia State University, Dec. 7, 2003, Hyper Physics Website—Sound and Heating, http://web.archive.org/web/20031207003155/hyperphysics.phy-astr.gsu.edu/hbase/sound/maxsens.html.
Brooker, Dr. Graham.Sensors and Signals. 2006. p. 212.
See http://www.acfr.usyd.edu.au/teaching/4th-year/mech4721-Signals/material/lecture%20notes/01%20Introduction.pdf for reference information.
See http://www.acfr.usyd.edu.au/teaching/4th-year/mech4721-Signals/material/lecture%20notes/09%20Propagation.pdf p. 212 for actual reference.
SeeSensors and Signalsby Dr. Graham Brooker (Chapter 9, Section 6, p. 212—Propagation Effects—Attenuation of Acoustic Waves in Water);Sensors and Signalsby Dr. Graham Brooker, 2006, Australian Centre for Field Robotics, University of Sydney, Australia.
Nave, Dr. C. Rod. Georgia State University. 2005.Hyper PhysicsWebsite—Sound and Hearing http://hyperphysics.phy-astr.gsu.edu/hbase/sound/maxsens.html, The following chart is an additional reference: C4, 261.625 Hz, Middle C, C5, 523.250 Hz, C above Middle C, C6, 1046.500 Hz, C above C5, C7 2093.000 Hz, C above C6.
http://www.phy.mtu.edu/˜suits
otefreqs.html
http://en.wikipedia.org/wiki/Pitch—(music).
Amond Brian A.
Bustamante Michael John
Fulbright Paul W.
Scott Anthony M.
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