Dual fuel heater

Details Dual fuel heater Dual fuel heater

2006-05-30

2009-10-27

Basichas, Alfred (Department: 3743)

Stoves and furnaces

Hot-air furnaces

Liquid or gaseous fuel

C126S11600A, C126S0920AC, C126S09200C, C431S278000, C431S281000, C431S282000

Reexamination Certificate

active

07607426

ABSTRACT:
In certain embodiments, a dual fuel heater has a pressure regulating device for selectively coupling with a first source or a second source operating at different pressures. The dual fuel heater can also include first and second fuel lines, a fluid flow controller, a combustion chamber and first and second oxygen depletion sensor nozzles. The fluid flow controller is configured to selectively permit flow of fuel to either the first fuel line or to the second fuel line. In some embodiments, the first fuel line is connected to the first oxygen depletion sensor nozzle and the second fuel line is connected to the second oxygen depletion nozzle.

REFERENCES:
patent: 2380956 (1945-08-01), Evarts
patent: 2422368 (1947-06-01), Ray
patent: 2630821 (1953-03-01), Arey et al.
patent: 2687140 (1954-08-01), St Clair
patent: 3001541 (1961-09-01), St Clair
patent: 3331392 (1967-07-01), Davidson et al.
patent: 4081235 (1978-03-01), Van der Veer
patent: 4290450 (1981-09-01), Swanson
patent: 4359284 (1982-11-01), Kude et al.
patent: 4768543 (1988-09-01), Wienke et al.
patent: 4930538 (1990-06-01), Browne
patent: 4965707 (1990-10-01), Butterfield
patent: 5172728 (1992-12-01), Tsukazaki
patent: 5251823 (1993-10-01), Joshi et al.
patent: 5413141 (1995-05-01), Dietiker
patent: 5513798 (1996-05-01), Tavor
patent: 5567141 (1996-10-01), Joshi et al.
patent: 5603211 (1997-02-01), Graves
patent: 5642580 (1997-07-01), Hess et al.
patent: 5782626 (1998-07-01), Joos et al.
patent: 5787874 (1998-08-01), Krohn et al.
patent: 5814121 (1998-09-01), Travis
patent: 5966937 (1999-10-01), Graves
patent: 5975112 (1999-11-01), Ohmi et al.
patent: 5987889 (1999-11-01), Graves et al.
patent: 5988204 (1999-11-01), Reinhardt et al.
patent: 6035893 (2000-03-01), Ohmi et al.
patent: 6045058 (2000-04-01), Dobbeling et al.
patent: 6135063 (2000-10-01), Welden
patent: 6244524 (2001-06-01), Tackels et al.
patent: 6257270 (2001-07-01), Ohmi et al.
patent: 6354072 (2002-03-01), Hura
patent: 6543235 (2003-04-01), Black et al.
patent: 6904873 (2005-06-01), Ashton
patent: 6938634 (2005-09-01), Dewey
patent: 7044729 (2006-05-01), Ayastuy
patent: 7251940 (2007-08-01), Graves et al.
patent: 7434447 (2008-10-01), Deng
patent: 2003/0217555 (2003-11-01), Gerhold
patent: 2004/0238030 (2004-12-01), Dewey, Jr.
patent: 720 854 (1942-05-01), None
patent: 58 219320 (1983-12-01), None
patent: 03 230015 (1991-10-01), None
patent: 2003 056845 (2003-02-01), None
patent: 2003 074837 (2003-03-01), None
patent: 2003 074838 (2003-03-01), None
Consumer Guide to Vent-Free Gas Supplemental Heating Products, est. 2007, p. 10-11.
International Search Report for Application No. PCT-US2008-056910 (the PCT counterpart of the parent application) mailed Jul. 16, 2008.
Office Action in U.S. Appl. No. 11/443,473 mailed Aug. 6, 2009.
U.S. Appl. No. 11/443,473 file history (including Office Actions dated Mar. 20, 2007, Apr. 8, 2008, Nov. 25, 2008 and Aug. 6, 2009).

Affiliated with

Also associated with

Rating

Dual fuel heater does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual fuel heater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual fuel heater will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4085690