US Patent No: 7,007,748
Number of patents in Portfolio can not be more than 2000
Indirect water heater and method of manufacturing same
Stats
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Mar 7, 2006
Issued date -
Sep 30, 2003
filing date -
10/677,038
serial no -
In Force
status
Importance
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Abstract
A heat exchange assembly adapted for use in a water tank is provided. The heat exchange assembly includes a tube having end portions and a coiled portion between the end portions. A fitting is connected to at least one of the end portions of the tube. The fitting has an end configured to extend through an opening in the water tank, and a surface positioned to limit the extension of the end through the opening in the water tank. The fitting also has an opposite end defining a bore configured to receive one of the end portions of the tube and to limit the extension of the end portion of the tube into the opposite end of the fitting. The bore extends axially beyond the surface of the fitting.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,081,696 Electrically grounded water heater | 9 | 1991 | |
| 5,372,185 Combined water heater and heat exchanger | 15 | 1993 | |
| 5,485,879 Combined water heater and heat exchanger | 18 | 1994 | |
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| 4,309,982 Process and apparatus for the preparation of hot water from solar energy | 9 | 1979 | |
| 4,345,583 Water heater using solar and non-solar energy | 13 | 1979 | |
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| 5,178,207 Plate heat exchanger with leakage detector | 13 | 1991 | |
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| 4,738,394 Integral liquid-backed gas-fired space heating and hot water system | 12 | 1987 | |
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| 6,098,705 Coil type condenser for refrigerator | 10 | 1998 | |
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| 4,238,873 Apparatus for collecting and transporting heat energy | 12 | 1978 | |
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| 4,426,037 Boiler for a heating system, as an article of manufacture, a boiler-heating system combination, and a method for heating a heat-transfer medium such as water in a heating system | 13 | 1982 | |
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| 4,461,347 Heat exchange assembly for ultra-pure water | 28 | 1981 | |
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| 5,136,985 Boiler tube support | 18 | 1991 | |
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| 5,228,413 Multiple boiler | 27 | 1992 | |
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| 4,972,902 Triple-wall tube heat exchanger | 10 | 1989 | |
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| 4,267,826 Solar collector for heating and cooling | 15 | 1978 | |
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| 4,201,264 Solar water tank | 8 | 1978 | |
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| 4,273,160 High pressure hose | 37 | 1979 | |
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| 5,787,722 Heat exchange unit | 10 | 1997 | |
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| 4,328,791 Gas supplemented solar collector storage means | 14 | 1980 | |
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| 4,353,410 Method of controlling the heating of a chamber and a controlled chamber-heating installation | 8 | 1979 | |
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| 4,637,347 Improved continuous low fluid exchange water heater | 20 | 1985 | |
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| 4,193,180 Method of forming a heat exchanger | 19 | 1977 | |
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| 4,253,446 Storage reservoirs for liquids heatable by solar energy | 23 | 1978 | |
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| 4,545,365 Fluid heating system utilizing solar energy and waste heat | 8 | 1983 | |
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| 6,789,615 Heat exchanger, in particular for swimming pools | 4 | 2003 | |
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| 5,971,444 Through wall connector | 21 | 1997 | |
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| 4,202,406 Heat exchange system | 16 | 1978 | |
| 4,272,667 Electric fluid heating apparatus employing stackable heat transfer modules | 7 | 1978 | |
| 4,282,861 Water heating system using solar energy | 10 | 1979 | |
| 4,296,799 Solar water tank and method of making same | 21 | 1979 | |
| 4,480,631 Apparatus for delivering heated fluid medium | 12 | 1982 | |
| 4,821,682 Method and apparatus for utilizing waste heat in hot water heaters | 10 | 1987 | |
| 5,037,510 Integrated water distiller and/or water heater and/or furnace | 8 | 1988 | |
| 4,949,680 Water heater having filling dip tube | 15 | 1989 | |
| 5,224,674 Method and apparatus for organizing and identifying intravenous administration lines | 33 | 1992 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 7, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 7, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |