Liquid heaters and vaporizers – Stand boiler – And condition responsive feature
Reexamination Certificate
2005-04-19
2005-04-19
Lu, Jiping (Department: 3749)
Liquid heaters and vaporizers
Stand boiler
And condition responsive feature
C122S014100, C122S014200, C236S02000A
Reexamination Certificate
active
06880493
ABSTRACT:
A gas water heater with a tank for holding water including a gas valve mounted below the tank and in fluid communication with a supply of gas. A gas burner is fluidly connected to the gas valve. A first temperature sensor is mounted adjacent a lower portion of the tank and detects a temperature of the water in the lower portion of the tank, and a second temperature sensor is mounted adjacent an upper portion of the tank and detects a temperature of water in the upper portion of the tank. A control has inputs connected to the first and second temperature sensors and outputs connected to the gas valve. The control operates the gas valve in response to reading signals from the first and second temperature sensors such that water in the top and bottom portions of the tank stays within a desired temperature range.
REFERENCES:
patent: 3289801 (1966-12-01), Jerkins
patent: 3292821 (1966-12-01), Cowley
patent: 3300092 (1967-01-01), Williams
patent: 3469590 (1969-09-01), Barker
patent: 3630189 (1971-12-01), Hodges et al.
patent: 4288209 (1981-09-01), Yoshinaga
patent: 4382773 (1983-05-01), Sobole
patent: 4805587 (1989-02-01), Schweitzer
patent: 4834284 (1989-05-01), Vandermeyden
patent: 5003960 (1991-04-01), Hanagan
patent: 5033449 (1991-07-01), Hanagan
patent: 5044520 (1991-09-01), Moisan
patent: 5052174 (1991-10-01), Bak
patent: 5163358 (1992-11-01), Hanagan et al.
patent: 5169303 (1992-12-01), Paluck
patent: 5333596 (1994-08-01), Clifford
patent: 5388984 (1995-02-01), Meslif
patent: 5503550 (1996-04-01), DePalma
patent: 5544856 (1996-08-01), King et al.
patent: 5590642 (1997-01-01), Borgeson et al.
patent: 5594616 (1997-01-01), Brecht et al.
patent: 5617840 (1997-04-01), Clifford
patent: 5813394 (1998-09-01), Clifford
patent: 5931655 (1999-08-01), Maher, Jr.
patent: 6059195 (2000-05-01), Adams et al.
patent: 6126435 (2000-10-01), Fredin-Garcia et al.
patent: 6220854 (2001-04-01), Clifford et al.
patent: 6350967 (2002-02-01), Scott
patent: 6465764 (2002-10-01), Shahin
patent: 0405014 (1991-01-01), None
patent: 9-252944 (1997-09-01), None
Randy Meyer,A.O. Smith Newsletter, May, 1998.
A.O. Smith,Parts List, Jun., 1996.
A.O. Smith,Manual for CYCLONE XHE Gas-Fired Water Heater, pp. 1, 5, 16; date unknown.
Lu Jiping
Wood Herron & Evans L.L.P.
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