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:
Feb. 08, 1983
Filed:
Oct. 06, 1980
Keith R Clark, Montgomery, AL (US);
Michael Focia, Jr, Montgomery, AL (US);
Rheem Manufacturing Company, Montgomery, AL (US);
Abstract
A method of manufacturing a foam insulated water heater of the type having an inner tank, a layer of insulating foam material surrounding the inner tank and an outer protective shell includes, in one embodiment, the steps of (1) forming a flexible, expandable bag in a configuration which may be placed around the bottom edge of the inner tank, (2) attaching the flexible bag around the bottom edge of the tank, (3) filling the bag with a foam material which expands to form a collar, (4) positioning the outer shell about inner tank prior to expansion of the foam collar, and (5) subsequently filling the remainder of the space between the tank and the shell with an expandable foam material which is retained, at least in part, by the foam expanded, flexible bag.