David A Carson

Address:

2468 Alto Cerro Cir, San Diego, CA 92109

Phone:

6195629431

VIN:

1B3HE78K77D103455

Make:

DODGE

Model:

CALIBER

Year:

2007

US Patent:

43972128, Aug 9, 1983

Filed:

Jan 19, 1981

Appl. No.:

6/340773

Inventors:

David L. Carson - San Diego CA

International Classification:

G10D 312

US Classification:

84313

Abstract:

Musician controlled relative motion between a generally standard stringed musical instrument (such as a Spanish guitar) and a false body hinged to the generally standard stringed instrument permits versatile control by the musician of the tension in one or more strings to produce both vibrato sounds and/or sustained pitch changes (both higher and lower pitches). The invention eliminates limitations of prior art which employed relative motion between neck and body of an otherwise generally standard stringed musical instrument.

US Patent:

44490682, May 15, 1984

Filed:

Sep 22, 1983

Appl. No.:

6/534901

Inventors:

Leopold J. Johnson - Valley Center CA
David L. Carson - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01L 4108

US Classification:

310316

Abstract:

A sonar compensation transformer is added to a sonar transceiver circuit to btain calibrated optimum performance from a sonar transducer using ceramic rings by slightly modifying the voltage of the transducer while at the same time allowing the transmit circuit to operate without appreciable change. The sonar compensation transformer is an improvement upon a conventional sonar transceiver circuit containing a transformer winding connected in series with a diode switch with the outer bounding connections of the transformer winding and the diode switch connected to the transducer element while the connection to the sonar transceiver is from a connection tapped into the winding of the sonar transformer and the connection from the outer bound of the diode switch. The sonar compensation transformer is connected in with a primary winding placed in parallel with the diode switch. The secondary winding is connected in the lead from the outside connection to the diode switch to the sonar transceiver, and is positioned to inductively interact with the primary winding placed in parallel across the diode switch.