Liquid heaters and vaporizers – Stand boiler – And condition responsive feature
Reexamination Certificate
2008-07-01
2008-07-01
McAllister, Steven B. (Department: 3749)
Liquid heaters and vaporizers
Stand boiler
And condition responsive feature
C122S014310, C122S014100, C122S013010, C137S072000, C137S074000
Reexamination Certificate
active
11562033
ABSTRACT:
A liquid heating appliance, representatively a water heater, is provided with protective apparatus for preventing rupture of its liquid storage tank portion caused by overheating of pressurized liquid therein. Illustratively, the protective apparatus includes a length of thermoplastic tubing, preferably polybutylene tubing, whose interior is exposed to the tank interior so as to be pressurized by heated liquid therein. In the event of a liquid overheating condition in the tank, the tubing is heat-softened in a manner reducing its burst pressure and causing it to burst, at a pressure substantially below the tank burst pressure, and thereby form a pressure relief outlet passage for the tank. A shield structure with at least one fluid outlet opening therein extends outwardly around the thermoplastic tubing to diffuse pressurized fluid escaping from the burst tubing.
REFERENCES:
patent: 4143670 (1979-03-01), Olson et al.
patent: 4143671 (1979-03-01), Olson
patent: 4744383 (1988-05-01), Visnic et al.
patent: 4750510 (1988-06-01), Short, III
patent: 4779902 (1988-10-01), Lee
patent: 4827962 (1989-05-01), Picton
patent: 4909028 (1990-03-01), Cetrelli et al.
patent: 4949862 (1990-08-01), Barbarits et al.
patent: 5006689 (1991-04-01), Kurachi et al.
patent: 5279321 (1994-01-01), Krimm
patent: 5575312 (1996-11-01), Schroeder
patent: 5848604 (1998-12-01), Eihusen
patent: 5923819 (1999-07-01), Ross et al.
patent: 6698386 (2004-03-01), Hoffman
patent: 6866057 (2005-03-01), Buehrle, II
patent: 6898373 (2005-05-01), Jackson
Haynes and Boone LLP
Juettner Andrew M
McAllister Steven B.
Rheem Manufacturing Company
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