High efficiency tank type continuous flow and self cleaning water heater
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 5, 2006
Grant Date -
May 26, 2005
app pub date -
Nov 22, 2004
filing date -
Nov 21, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Patent Longevity
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Forward Citations
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Abstract
A water heater comprising a closed tank having a water inlet for connection with a water supply, and a hot water outlet connected to the tank interior; a flue pipe extending vertically through the tank and having an upper portion for connection with a vent pipe; a cylinder having a lower end and upper open end with means for opening disposed within the flue pipe, and spaced from inner walls of the flue pipe, and extending substantially the length of the flue pipe; a burner disposed in a lower region of the cylinder and above the lower end thereof, such that combustion products from the burner rise through the cylinder; and a water conducing coil disposed within the cylinder connected with the interior of the tank.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CA | A1 | CA2488128 | Nov 22, 2004 |
| US | A1 | US20070062464 | Sep 01, 2006 |
International Classification(s)
- 2004 Application Filing Year
- F22B Class
- 75 Applications Filed
- 30 Patents Issued To-Date
- 40 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 11 Citation Count
- F22B Class
- 72.31 % this patent is cited more than
- 19 Age
