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:
Dec. 30, 1986
Filed:
Feb. 25, 1985
Applicant:
Inventor:
Keith R Clark, Montgomery, AL (US);
Assignee:
Rheem Manufacturing Company, Montgomery, AL (US);
Primary Examiner:
Int. Cl.
CPC ...
B28B / ; B29C / ; B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 452 ; 264 465 ; 264 466 ; 264 469 ; 264314 ;
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 between the tank and shell, (2) attaching the flexible bag between the tank and shell, (3) filling the bag with a foam material which expands, and (4) continuing to fill the bag so that foam material expands through relief openings in the bag to fill the remainder of the space between the tank and the shell.