Back to results
US 5,474,202 AGranted
Method of making a water heater and an improved water heater structure
AssigneeSABH (U.S.) Water Heater Group, Inc.
InventorH. Jack Moore, Jr.
Life of this patent
Estimating the term…
Abstract
A method of making a foamed-in-place insulated water heater is provided wherein isolation elements are positioned against a tank around the thermostats and spacer elements are positioned against the tank opposite the isolation elements. The water heater jacket is squeezed into an oval shape elongated to accommodate the passage of the jacket over the isolation elements and spacer elements and positioned around the tank and the squeeze released. The thermostats are protected when foam is then introduced into the annular space between the jacket and tank.
Claims7
A water heater comprising:
- a generally cylindrical tank having a sidewall having a curve, a diameter and at least one heater opening in said side wall adapted to receive an apparatus adapted to heat a body of water within said tank;
- a generally cylindrical jacket having a curve and a diameter larger than said tank diameter surrounding said tank and creating a space between said tank and said jacket;
- at least one rigid isolation element having a thickness substantially equal to one half the difference between said jacket diameter and said tank diameter, a central opening adapted to allow access to said tank heater opening, an inner surface having a contour generally matching the curve of said tank and an outer surface having a contour generally matching the curve of said jacket positioned around said heater opening and against said tank;
- at least one rigid spacer having a thickness approximately equal to one half the difference between said jacket diameter and said tank diameter positioned against said tank generally diametrically opposed to said isolation element;
- a body of foamed in place insulation substantially filling said space except for said central opening.
2 more elements
Dependencies are inferred from the claim text.