DELIVERY SYSTEMS FOR PRESSURE PROTECTING AND DELIVERING A SUBMERGED PAYLOAD AND METHODS FOR USING THE SAME

• US 20120118216A1
• Filed: 04/07/2011
• Published: 05/17/2012
• Est. Priority Date: 12/12/2007
• Status: Active Grant

• Current Assignee: iRobot Corporation
• Original Assignee: iRobot Corporation
• Inventors: Vosburgh, Frederick
• Granted Patent: US 8,281,731 B2
• Time in Patent Office: Days
• US Class Current: 114/321
• CPC Class Codes: B63B 49/00 Arrangements of nautical instruments or navigational aids nautical measuring instruments G01C; radio navigation, analogous arrangements using other waves G01S
• CPC Class Codes: B63G 8/001 Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations self-propelled or direction controlled diving chambers with mechanical link to a base B63C11/42

Abstract

A payload delivery system for protecting and delivering a payload submerged in a submersion medium includes a containment system. The containment system includes a container and a dehiscing system. The container includes a pressure-resistant shell defining a sealed containment chamber. The dehiscing system is operative to dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event and/or a prescribed environmental condition.

Claims

1. A payload delivery system for protecting and delivering a payload submerged in a submersion medium, the payload delivery system comprising a containment system including:

a container including a pressure-resistant shell defining a sealed containment chamber; and

a dehiscing system including a controller operative to automatically dehisce the shell to open the containment chamber to the submersion medium responsive to detection of a prescribed event and/or a prescribed environmental condition.

2. The payload delivery system of claim 1 wherein the shell includes a plurality of substantially rigid shell members mated to one another to form the sealed containment chamber.

3. The payload delivery system of claim 1 wherein the shell includes a flexible envelope defining the sealed containment chamber.

5. The payload delivery system of claim 1 wherein the dehiscing system is operative to automatically dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event.

6. The payload delivery system of claim 5 wherein the prescribed event includes at least one of:

elapse of a prescribed period of time;

attainment of a prescribed depth;

detection of a prescribed signal;

receipt of a command;

attainment of a prescribed location; and

occurrence of a prescribed operational condition.

7. The payload delivery system of claim 6 wherein the detected prescribed event includes a lapse of a prescribed period of time.

8. The payload delivery system of claim 6 wherein the detected prescribed event includes attainment of a prescribed depth.

9. The payload delivery system of claim 1 wherein the dehiscing system is operative to automatically dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed environmental condition.

10. The payload delivery system of claim 1 wherein the dehiscing system includes a pressure generator operable to generate an increase in pressure in the containment chamber to cause the container to dehisce.

11. The payload delivery system of claim 10 wherein the pressure generator includes a gas provider to introduce additional gas into the containment chamber to increase the pressure in the containment chamber.

12. The payload delivery system of claim 1 wherein the dehiscing system includes a mechanical dehiscing actuator including a pusher and a retainer.

13. The payload delivery system of claim 1 including a payload contained in the containment chamber.

14. The payload delivery system of claim 13 wherein the payload includes a substantially rigid payload housing disposed in the containment chamber, wherein the payload housing is releasable when the container is dehisced.

15. The payload delivery system of claim 1 including a secondary object operable to retain and selectively release the container.

16. The payload delivery system of claim 1 wherein an internal pressure of the containment chamber is sub-atmospheric.

17. The payload delivery system of claim 1 wherein an internal pressure of the containment chamber is greater than atmospheric before the container is dehisced.

18. The payload delivery system of claim 1 wherein the containment system is operative to automatically activate the payload prior to release of the payload.

19. The payload delivery system of claim 1 wherein the containment system and the payload form a dispensable unit having a buoyancy enabling the dispensable unit to passively ascend in the submersion medium.

4. The payload delivery system of claim 4 wherein the flexible envelope is formed of a compliant, flexible film.

20. A method for protecting and delivering a payload submerged in a submersion medium, the method comprising:

providing a containment system including;

a container including a pressure-resistant shell defining a sealed containment chamber; and

a dehiscing system including a controller;

mounting the payload in the containment chamber;

submerging the container with the payload mounted in the containment chamber;

thereafter

detecting a prescribed event and/or a prescribed environmental condition; and

responsive to detecting the prescribed event and/or the prescribed environmental condition, using the controller, automatically dehiscing the shell using the dehiscing system to open the containment chamber to the submersion medium.

21. A payload delivery system for protecting and delivering a payload submerged in a submersion medium, the payload delivery system comprising a containment system including:

a container including a pressure-resistant shell defining a sealed containment chamber; and

a dehiscing system operative to dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event and/or a prescribed environmental condition;

wherein the shell includes a flexible envelope defining the sealed containment chamber.

22. The payload delivery system of claim 21 wherein the flexible envelope is formed of a compliant, flexible film.

23. A payload delivery system for protecting and delivering a payload submerged in a submersion medium, the payload delivery system comprising a containment system including:

a container including a pressure-resistant shell defining a sealed containment chamber; and

a dehiscing system operative to automatically dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event and/or a prescribed environmental condition;

wherein the prescribed environmental condition includes an external pressure on the shell becoming less than a prescribed threshold pressure.

24. A payload delivery system for protecting and delivering a payload submerged in a submersion medium, the payload delivery system comprising a containment system including:

a container including a pressure-resistant shell defining a sealed containment chamber; and

a dehiscing system operative to dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event and/or a prescribed environmental condition;

wherein the containment system and the payload form a dispensable unit having a buoyancy enabling the dispensable unit to passively ascend in the submersion medium.