Theodore A Henriquez

45450412, Oct 1, 1985

Oct 27, 1982

6/437083

Allan C. Tims - Orlando FL
Theodore A. Henriquez - Orlando FL

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

H04R 1700

367157

A shock-hardened hydrophone comprising a sensor electrically connected to a ow output-impedance preamplifier by a circuitboard. The sensor includes two metal cups, each cup with a piezoelectric ceramic disk positioned therein for generating a potential difference between the first and second surfaces of the disk. The cups are bolted together with the circuitboard positioned between the disks. The second surfaces of the disk are in pressure contact with the cups while the first surfaces are in pressure contact with a first electrode disposed on both sides of the circuitboard. A wire connects one of the metal cups to a second electrode disposed on either side of the circuitboard thereby completing the electrical connection of the disks to the electrodes on the circuitboard. The preamplifier is mounted on the circuitboard where the input to the preamplifier is the voltage difference between the first and second electrodes.

51294036, Jul 14, 1992

Nov 13, 1990

7/617469

Theodore A. Henriquez - Orlando FL
Allan C. Tims - Orlando FL

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

A61B 700

128773

An apparatus and method for detecting acoustic signals originating in a brain, such as those that characterize intersaccular aneursyms. The apparatus has a piezoelectric detector mounted with a cupping receptacle, the receptacle formed to receive an acoustic matching medium and press the medium against the eye socket of a patient. In this manner, the apparatus provides an acoustic path between the brain and the detector that is inherently low loss and acoustically matched, making for a system that is inherently sensitive. In particular embodiments, the cupping structure can be goggles which can be mounted on the patient's head for convenience, or can be of a form enabling a technician to press the structure against the eye socket.

H3913, Dec 1, 1987

Jun 23, 1986

6/877708

Theodore A. Henriquez - Orlando FL
Allan C. Tims - Orlando FL

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

H04R 1700

367159

A hydrophone comprising a tubular thin-walled member of a piezoelectric polymer such as polyvinylidene with electrodes covering the interior and exterior surfaces of the tubular member. An elastomeric core is inserted into the interior of the tubular member and then brought into radial compression against the interior surface of the tubular member.

41931300, Mar 11, 1980

Sep 7, 1978

5/940550

A. Mark Young - Winter Park FL
Theodore A. Henriquez - Orlando FL
Allan C. Tims - Orlando FL

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

H04R 2300

367149

A fiber optic hydrophone for use as an underwater electroacoustic standard. The hydrophone includes a fiber optic acoustic wave detector in one end of the hydrophone which is subjected to incident acoustical waves. A similar fiber optic is in an acoustically isolated compartment where the optic fiber is not affected by the incident acoustical wave. Comparison of light passing through each coil will determine incidence of an acoustical wave on the detector fiber.

39478025, Mar 30, 1976

Jun 12, 1972

5/261861

Allan C. Tims - Orlando FL
Theodore A. Henriquez - Orlando FL

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

H04B 1300

340 10

A piezoelectric ceramic transducer assembly for broadband noise-measuring drophone. A longitudinally polarized lead zirconate-titanate cylinder provided with end caps is sealed by O-rings within a circumferentially polarized lead zirconate-titanate cylinder providing high sensitivity, smooth response, omnidirectionality, and stability with temperature and hydrostatic pressure variations.

54065313, Apr 11, 1995

Apr 30, 1993

8/054485

Theodore A. Henriquez - Orlando FL
Clementina M. Siders - Orlando FL
Allan C. Tims - Orlando FL

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

H04R 1700

367157

A low frequency flex-beam underwater acoustic transducer has a base, a flexible beam having one end cantilever mounted on the base, and piezoelectric driving means, for flexurally driving the beam. The piezoelectric driving means operates in the k. sub. 31 and/or the k. sub. 33 mode.

49823868, Jan 1, 1991

May 31, 1990

7/532251

Theodore A. Henriquez - Orlando FL

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

H04R 1700

367151

A deep submergence, acoustically stable directional transducer uses a wavide and an encapsulant to channel sound. The waveguide forms an air space with a housing so that radiated sound is totally reflected at the air space interface. The encapsulant is matched to the acoustic impedance of the sea water at the intended operating depth to minimize reflection at the encapsulant-to-sea water interface.