Water submersion detection switch

Patent metadata

Field	Value
Publication number	US-11971290-B2
Application number	US-202117524120-A
Country	US
Kind code	B2
Filing date	Nov 11, 2021
Priority date	Nov 13, 2020
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

A water submersion detection system that may include a buoyant device having a conductive surface, and a housing enclosing the buoyant device and having conductive elements. The conductive elements may include a first set of one or more nonadjacent conductive elements that are electrically connected, and a second set of one or more nonadjacent conductive elements that are electrically connected. The system may include a submersion alert device that activates responsive to the buoyant device contacting the housing.

First claim

What is claimed is:

1. A water submersion detection system comprising:
a buoyant device having a conductive surface;
a housing enclosing the buoyant device and having conductive elements, the conductive elements further comprising:
a first set of conductive elements that are electrically connected and nonadjacent in an azimuthal direction, and
a second set of conductive elements that are electrically connected and nonadjacent in the azimuthal direction; and

a submersion alert device that activates responsive to the buoyant device electrically connecting the first set of nonadjacent conductive elements and the second set of nonadjacent conductive elements.

2. The detection system of claim 1 , further comprising one or more dissolvable devices positioned between the conductive elements and the buoyant device, wherein at least one of the one or more dissolvable devices dissolves when at least partially submerged allowing movement of the buoyant device.

3. The detection system of claim 1 , further comprising compressible material between the conductive elements and buoyant device.

4. The detection system of claim 3 , wherein the compressible material moves responsive to a force associated with the buoyant device when the buoyant device is at least partially submerged.

5. The detection system of claim 1 , wherein the buoyant device has a submersion buoyancy so that the buoyant device contacts the housing when the buoyant device is at least partially submerged.

6. The detection system of claim 1 , wherein the buoyant device has a submersion buoyancy so that the buoyant device contacts the first and second sets of conductive elements when the buoyant device is at least partially submerged.

7. The detection system of claim 1 , wherein the submersion alert device is coupled to a safety device, wherein activation of the submersion alert device causes activation of the safety device.

8. The detection system of claim 7 , wherein the safety device comprises a flotation device that deploys after the submersion alert device is activated.

9. The detection system of claim 7 , wherein the safety device comprises a signaling device that transmits a beacon after the submersion alert device is activated.

10. The detection system of claim 1 , wherein the first set of conductive elements are spaced apart in the azimuthal direction at a first specified angular specification.

11. The detection system of claim 10 , wherein the second set of conductive elements are spaced apart in the azimuthal direction at a second specified angular specification.

12. The detection system of claim 1 , wherein the first set of conductive elements is electrically isolated from the second set of conductive elements prior to the buoyant device contacting the housing.

13. The detection system of claim 1 , wherein the first set of conductive elements is electrically connected to the second set conductive nonadjacent elements after the contact by the buoyant device.

14. The detection system of claim 1 , wherein the buoyant device comprises a buoyant sphere and the housing is a cage system enclosing the buoyant sphere, and the conductive elements arranged in a spherical shape.

15. The detection system of claim 1 , further comprising a power source coupled to (i) the submersion alert device and to (ii) the first set of conductive elements or the second set of conductive elements.

16. The detection system of claim 1 , wherein the submersion alert device comprises a logical device configured to output a Boolean value.

17. The detection system of claim 1 , wherein the submersion alert device comprises a switch.

Assignees

• Us Navy
• Us Gov Sec Navy

Inventors

• Gamache Raymond Mark

Classifications

• G01F23/683 Primary

  using electromechanically actuated indicating means · CPC title

• G01F23/76

  characterised by the construction of the float · CPC title

• G08B21/182

  Level alarms, e.g. alarms responsive to variables exceeding a threshold · CPC title

• G08B21/088

  by monitoring a device worn by the person, e.g. a bracelet attached to the swimmer · CPC title

• G01F23/0007 Primary

  for discrete indicating and measuring (G01F23/02 - G01F23/28 take precedence) · CPC title