CA2561299A1 - Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same - Google Patents
Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same Download PDFInfo
- Publication number
- CA2561299A1 CA2561299A1 CA002561299A CA2561299A CA2561299A1 CA 2561299 A1 CA2561299 A1 CA 2561299A1 CA 002561299 A CA002561299 A CA 002561299A CA 2561299 A CA2561299 A CA 2561299A CA 2561299 A1 CA2561299 A1 CA 2561299A1
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- CA
- Canada
- Prior art keywords
- conduit
- same
- sections
- port
- confined space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Laying Of Electric Cables Or Lines Outside (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
An electrically conductive confined space ventilation conduit formed of a substantially rigid non-metallic conductive material, such as plastic, and a related process for ventilating an enclosure accessed by a manhole or other port. In one embodiment, the conduit has a pair of outer cylindrical sections and a central section having a cross-sectional shape of a crescent or a segment of a circle where it passes through a port to provide a minimum of obstruction for men and equipment passing through the port. Intermediate sections of varying cross-section connect the central section to the cylindrical outer sections so that the outer sections are offset from the axis of the manhole. The central section is preferably configured to obstruct no more than about 10 percent of a standard manhole opening, while causing either no air flow rate reduction, or a reduction of no more than about 10 percent as compared to the flow rate through a cylindrical conduit similar to said outer sections. The conduit is preferably formed of a conductive or electrically dissipative polyethylene polymer material to allow static electricity to be conducted from the conduit to ground. In a preferred embodiment, a connecting device for connecting the conduit to electrical ground is connected to the conduit. A grounding circuit kit and method of grounding the conduit is also disclosed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/607,078 | 2003-06-25 | ||
| US10/607,078 US6843274B1 (en) | 2003-06-25 | 2003-06-25 | Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation system using same, and methods of using and forming same |
| CA002436809A CA2436809C (en) | 2003-06-25 | 2003-08-06 | Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002436809A Division CA2436809C (en) | 2003-06-25 | 2003-08-06 | Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2561299A1 true CA2561299A1 (en) | 2004-12-25 |
| CA2561299C CA2561299C (en) | 2008-10-07 |
Family
ID=37441513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002561299A Expired - Lifetime CA2561299C (en) | 2003-06-25 | 2003-08-06 | Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2561299C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7992593B2 (en) | 2003-06-25 | 2011-08-09 | Air Systems, Inc. | Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same |
-
2003
- 2003-08-06 CA CA002561299A patent/CA2561299C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7992593B2 (en) | 2003-06-25 | 2011-08-09 | Air Systems, Inc. | Electrically conductive confined space ventilator conduit formed of conductive polymer, electrical grounding circuit for ventilation systems using same, and methods of using and forming same |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2561299C (en) | 2008-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20230808 |