Underwater acoustic carbon nanotube thermophone

Patent metadata

Field	Value
Publication number	US-9838802-B1
Application number	US-201615273801-A
Country	US
Kind code	B1
Filing date	Sep 23, 2016
Priority date	Sep 23, 2016
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A carbon nanotube thermophone is provided which includes a urethane frame having mounting holes at corners of the frame. Screw holes in the frame are provided for a cable holder. A square shaped carbon nanotube material chip is positioned within the urethane frame. The carbon nanotube material chip can comprise multiple carbon nanotube sheets to electrically tune the impedance to match a driving amplifier impedance load. Wooden spacers assist in positioning the carbon nanotube material chip. A first end of a cable is soldered to the carbon nanotube material chip at electrodes of the material chip. A high temperature rated silicon sealant is used for attachment points on the thermophone.

First claim

What is claimed is:

1. A thermophone comprising:
a frame having a rectangular outer perimeter and a rectangular inner perimeter with a first plane and a second plane;
a square carbon nanotube chip positioned within the inner perimeter of said frame, said carbon nanotube chip including at least one thermos-radiation surface and capable as an acoustic radiation surface with at least two electrodes extending from said carbon nanotube chip;
a first cable having a first end and a second end with a length of twenty inches, said first cable electrically connected at the first end to said electrodes;
a second cable electrically connected to said first cable at the second end of said first cable; and
a high temperature rated silicon sealant applied at contact points of said carbon nanotube to said frame and said first cable.

2. The thermophone in accordance with claim 1 , wherein a material of said frame is urethane.

3. The thermophone in accordance with claim 2 , wherein said carbon nanotube chip is sized at three inches in length and width with a one inch thickness.

4. The thermophone in accordance with claim 3 , wherein the outer perimeter of said frame is six and one-half inches in length and five inches in width and said frame has a thickness of one half of an inch.

5. The thermophone in accordance with claim 4 , said thermophone further comprising a first pair of apertures spaced apart and positioned between the outer perimeter and the inner perimeter of frame, said first pair of apertures thru said first plane and said second plane.

6. The thermophone in accordance with claim 5 , said thermophone further comprising a second pair of apertures spaced apart and in alignment with and between said first pair of apertures, said second pair of apertures thru said first plane and said second plane.

7. The thermophone in accordance with claim 6 , said thermophone further comprising a cable holder mounted at said second pair of apertures.

8. The thermophone in accordance with claim 7 , said thermophone further comprising a plurality of spacers capable of positioning said carbon nanotube material chip within said frame.

9. The thermophone in accordance with claim 8 , wherein said silicon sealant is positioned between said spacers and said carbon nanotube chip.

Assignees

• Howarth Thomas R
• Huang Dehua
• Us Navy

Inventors

• Howarth Thomas R
• Huang Dehua

Classifications

• G01S7/521

  Constructional features · CPC title

• H04R23/002 Primary

  using electrothermic-effect transducer · CPC title

• H04R1/44

  Special adaptations for subaqueous use, e.g. for hydrophone · CPC title

• H04R2201/028

  Structural combinations of loudspeakers with built-in power amplifiers, e.g. in the same acoustic enclosure (H04R2499/10 takes precedence; Single (sub)woofer with two or more satellite loudspeakers for mid- and high-frequency band reproduction driven via the (sub)woofer H04R2205/026) · CPC title

• H04R2307/023

  Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials · CPC title