Liquid heaters and vaporizers – Casings
Patent
1998-09-01
1999-07-20
Walberg, Teresa
Liquid heaters and vaporizers
Casings
2206941, F22B 3736
Patent
active
059243929
ABSTRACT:
A water heater is provided with a specially designed molded bottom pad/foam dam member which is placed in its bottom pan prior to placing bottom annular portions of the water heater tank and its outwardly spaced jacket structure into the bottom pan. The pad/dam member functions to automatically center the tank relative to its jacket structure, and to prevent leakage past the bottom pan of liquid foam insulation injected into the tank/jacket annulus after bottom end portions of the tank and jacket are secured within the bottom pan. The top side of the pad/dam member has three concentric annular grooves formed therein. The outermost first groove receives an annular bottom end portion of the jacket, while a second groove receives an annular bottom end portion of the tank. The provision of the third groove permits the same pad/dam member to be alternatively used with a water heater having a different tank diameter to thereby improve the manufacturing efficiency of a line of differently sized water heaters. When a second water heater having a different tank diameter is used with the bottom pad/foam dam member, annular bottom edge portions of the second water heater's jacket and tank portions are respectively received in the first and third top side grooves in the pad/dam member.
REFERENCES:
patent: 4452226 (1984-06-01), Daugirda et al.
patent: 4477399 (1984-10-01), Tilton
patent: 4844049 (1989-07-01), Nelson
patent: 4860728 (1989-08-01), Nelson
patent: 4865014 (1989-09-01), Nelson
patent: 4904428 (1990-02-01), West et al.
patent: 5020481 (1991-06-01), Nelson
patent: 5115767 (1992-05-01), West et al.
patent: 5154140 (1992-10-01), Windon
patent: 5180077 (1993-01-01), Lewis
patent: 5460290 (1995-10-01), Hanning et al.
Rheem Manufacturing Company
Walberg Teresa
Wilson Gregory A.
LandOfFree
Bottom pad/foam dam apparatus for water heaters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bottom pad/foam dam apparatus for water heaters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bottom pad/foam dam apparatus for water heaters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1313105