The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 1991
Filed:
Jul. 21, 1989
James L Chevalier, Mequon, WI (US);
John D Pfeffer, Brookfield, WI (US);
Thomas F Brownell, Oconomowoc, WI (US);
A. O. Smith Corporation, Milwaukee, WI (US);
Abstract
A method of producing a foam insulated vessel, such as a water heater. The water heater includes a tank to contain water to be heated and a jacket is spaced outwardly of the tank to provide a cavity therebetween. A band of self-supporting, gas entrained, foamable resin is applied to either the outer surface of the lower end portion of the tank, or to the inner surface of the jacket. The band of foamable resin expands radially to form a closure or dam that divides the cavity into a pair of isolated spaces. A liquid foamable resin composition is then introduced into one of the spaces and expands to fill the space and provide an insulating layer between the tank and the jacket.