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:
Apr. 13, 1999
Filed:
Mar. 24, 1998
Zexel Corporation, Tokyo, JP;
Abstract
In order to prevent a communicating pipe from becoming damaged by water (in particular drain water) collecting in the gap formed between the tube element at one end of a heat exchanger that is constituted of a flat plate and a formed plate and the communicating pipe through defective brazing and repeatedly freezing and melting, a flange (32) and a bonding margin (11) continuous to the flange (32) are notched off over almost the entire circumference at the center on the inside of an indented portion (9) in a formed plate (16) which, together with a flat plate (15), constitutes a tube element (3b). Thus, while the communicating pipe (27) comes in contact with the internal surface of a flange (29) of a pipe connection hole (28) of the flat plate (15), it does not come in contact with the formed plate (16), thereby forming a gap bounded by the flat plate (15), the formed plate (16) and the communicating pipe (27).