Pressure equalizing equipment housing

• US 7,874,743 B2
• Filed: 11/23/2005
• Issued: 01/25/2011
• Est. Priority Date: 11/23/2004
• Status: Expired due to Fees

• Current Assignee: Sensormatic Electronics LLC (Johnson Controls International plc)
• Original Assignee: Sensormatic Electronics LLC (Johnson Controls International plc)
• Inventors: Camelia, Michael, Berkey, Thomas F.
• Primary Examiner(s): Perkey; W. B.
• Assistant Examiner(s): ADAMS, BRET W
• Application Number:
  US11/667,989
• Publication Number:
  US 20080314899A1
• Time in Patent Office: 1,889 Days
• Field of Search: 396/427
• US Class Current: 396/427
• CPC Class Codes: H05K 5/068 having a pressure compensation device, e.g. membrane venting means H05K5/0213

Abstract

A pressure equalizing housing may be used to house equipment (e.g., one or more mechanical and/or electronic devices). The pressure equalizing housing may include a pressure equalization device to provide pressure equalization between an internal pressure inside of the housing and an ambient pressure outside of the housing. The pressure equalization prevents relatively humid air outside of the housing from passing into the housing and thus prevents or substantially minimizes condensation inside of the housing.

Claims

1. A pressure equalizing equipment housing comprising:

a sealed enclosure configured to enclose equipment;

a pressure equalizing device defining a volumetrically adjustable chamber, said pressure equalizing device being coupled to said sealed enclosure such that air or gas flows freely between an interior of said enclosure and said volumetrically adjustable chamber, and wherein said volumetrically adjustable chamber is configured to adjust sufficiently to equalize an internal pressure inside said sealed enclosure with an ambient air pressure outside of said sealed enclosure; and

a humidity sensing device inside of said sealed enclosure.

2. The pressure equalizing equipment housing of claim 1 further comprising a desiccant located inside said chamber.

3. The pressure equalizing equipment housing of claim 2 wherein said pressure equalizing device comprises a flexible container defining said chamber, said flexible container being removably coupled to said enclosure.

4. The pressure equalizing equipment housing of claim 3 further comprising a connection port removably connecting said flexible container to said enclosure, said connection port including an automatic closing valve mechanism to restrict flow when said container is removed.

5. The pressure equalizing equipment housing of claim 1 further comprising dry nitrogen inside said sealed enclosure.

6. The pressure equalizing equipment housing of claim 1 wherein said pressure equalizing device comprises a flat bag defining said chamber.

7. The pressure equalizing equipment housing of claim 1 wherein said pressure equalizing device comprises a flexible container defining said chamber and a protective housing around said flexible container.

8. The pressure equalizing equipment housing of claim 7 wherein said flexible container and said protective housing are removably coupled to said sealed enclosure.

9. The pressure equalizing equipment housing of claim 1 wherein said pressure equalizing device comprises a flexible sidewall of said sealed enclosure, said flexible sidewall defining said chamber.

10. The pressure equalizing equipment housing of claim 1 wherein said pressure equalizing device comprises a flexible container defining said chamber and a conduit coupling said flexible container to said enclosure.

11. The pressure equalizing equipment housing of claim 1 wherein said sealed enclosure includes a main enclosure portion and a transparent bubble portion coupled to said main enclosure portion.

12. The pressure equalizing equipment housing of claim 11 wherein said pressure equalizing device is coupled to said main enclosure portion, and further comprising a shroud around at least said main enclosure portion and said pressure equalizing device.

21. The pressure equalizing equipment housing of claim 11, wherein said humidity sensing device can be viewed through said transparent bubble portion of the sealed enclosure.

13. An enclosed device comprising:

equipment;

a sealed enclosure enclosing said equipment; and

a pressure equalizing device defining a volumetrically adjustable chamber, said pressure equalizing device being coupled to said sealed enclosure such that air or gas flows freely between an interior of said enclosure and said volumetrically adjustable chamber, and wherein said volumetrically adjustable chamber is configured to adjust sufficiently to equalize an internal pressure inside said sealed enclosure with an ambient air pressure outside of said sealed enclosure; and

a humidity sensing device inside of said enclosure.

14. The enclosed device of claim 13 wherein said equipment includes a camera.

15. The enclosed device of claim 14 wherein said sealed enclosure includes a video dome enclosure.

16. The enclosed device of claim 14, wherein said camera is configured to capture an image of a humidity level indicated by said humidity sensing device.

17. The enclosed device of claim 13 wherein said pressure equalizing device comprises a flexible container defining said chamber.

18. The enclosed device of claim 13 wherein said pressure equalizing device comprises a flexible sidewall of said sealed enclosure, said flexible sidewall defining said chamber.

19. The enclosed device of claim 13 further comprising a desiccant located inside said chamber.

20. The enclosed device of claim 16, wherein said image of a humidity level is transmitted to a remote location.