Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Reexamination Certificate
1993-04-08
2009-11-10
Campbell, Thor S (Department: 3742)
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
C392S486000, C219S497000
Reexamination Certificate
active
07616873
ABSTRACT:
A flow-through instantaneous fluid heater system is designed to satisfy the need for a heater not limited by being connected to a storage tank and which can be made using a plastic casing, incorporating cool-down when out of service and with features of venting and simplified flushing and draining. The system incorporates the use of one or more compartments, usually assembled in two compartment modules connected in series. Each compartment includes a casing having a hollow cylindrical interior region. An inlet aperture is located at one end of the casing and an outlet aperture is located at the other end of the casing. The lower end of each casing is closed by a removable base and the upper end of the casing is closed by a top plate and a heating element. The heating element is positioned axially in the interior region of the compartment. The heating element is activated by a control system which senses and compares temperatures of the water at the compartment outlets. The control system uses temperature comparisons to detect flow through the system to determine whether the heating elements should be activated to maintain the fluid at a stand-by temperature or at an operational temperature.
REFERENCES:
patent: 1196487 (1916-08-01), Simon
patent: 1224117 (1917-04-01), Nesmith
patent: 1318237 (1919-10-01), Sordi
patent: 1322897 (1919-11-01), Gray
patent: 1731058 (1929-10-01), Pierson
patent: 1766068 (1930-06-01), De Lannoy
patent: 2140389 (1938-12-01), Lum
patent: 2237808 (1941-04-01), Berg
patent: 2444508 (1948-07-01), Horni
patent: 2465208 (1949-03-01), De Gelleke
patent: 2553212 (1951-05-01), Rouis et al.
patent: 2710908 (1955-06-01), Doniak
patent: 2825791 (1958-03-01), Jackson
patent: 2911511 (1959-11-01), Megarry
patent: 2958755 (1960-11-01), Miller
patent: 3175075 (1965-03-01), Nord et al.
patent: 3196679 (1965-07-01), Howland
patent: 3261963 (1966-07-01), Weinstein
patent: 3280299 (1966-10-01), Doniak
patent: 3660987 (1972-05-01), Gail et al.
patent: 3680377 (1972-08-01), Lightner
patent: 3898428 (1975-08-01), Dye
patent: 3942378 (1976-03-01), Olmstead
patent: 3952182 (1976-04-01), Flanders
patent: 4092519 (1978-05-01), Eaton-Williams
patent: 4167663 (1979-09-01), Granzow, Jr. et al.
patent: 4185187 (1980-01-01), Rogers
patent: 4334141 (1982-06-01), Roller et al.
patent: 4337388 (1982-06-01), July
patent: 4371777 (1983-02-01), Roller et al.
patent: 4395618 (1983-07-01), Cunningham
patent: 4436983 (1984-03-01), Solobay
patent: 4455475 (1984-06-01), Giorgetti
patent: 4459465 (1984-07-01), Knight
patent: 4480467 (1984-11-01), Harter et al.
patent: 4502164 (1985-03-01), Gemmell
patent: 4538673 (1985-09-01), Partin et al.
patent: 4567350 (1986-01-01), Todd, Jr.
patent: 4604515 (1986-08-01), Da vidson
patent: 4645907 (1987-02-01), Salton
patent: 4825043 (1989-04-01), Knauss
patent: 4900896 (1990-02-01), Maus
patent: 5129034 (1992-07-01), Sydenstricker
patent: 5216743 (1993-06-01), Seitz
patent: 462931 (1937-03-01), None
patent: 1098077 (1968-01-01), None
David Sellers; Rodale Product Testing Report—Instantaneous Water Heaters; Rodale Press, Inc., 1985; Emmaus, PA; all pages.
Browning & Bushman P.C.
Campbell Thor S
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