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:
Oct. 26, 1999
Filed:
Aug. 27, 1998
Applicant:
Inventor:
Akira Nakashima, Aichi-ken, JP;
Assignee:
Toyotomi Co., Ltd., Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F22B / ;
U.S. Cl.
CPC ...
122494 ; 122 131 ; 122 14 ; 122 17 ; 1223671 ;
Abstract
A tank structure of a hot-water supply unit capable of permitting tap water under a high pressure to be supplied thereto without using any safety mechanism. An inner barrel of a tank body is formed by rounding or bending a flat plate of an increased thickness by rolling and then joining both lateral ends of the plate to each other by welding. The inner barrel and an outer barrel are joined together through a joint ring of a thickness between a thickness of the inner barrel and that of the outer barrel. Thus, the tank body can be readily manufactured using any specific equipment.