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. 19, 1978
Filed:
May. 27, 1975
Applicant:
Inventors:
Kazuhiro Ohta, Nagoya, JP;
Mituzi Ohshima, Ohbu, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F / ;
U.S. Cl.
CPC ...
165111 ; 123 4154 ; 1651 / ;
Abstract
An upper tank of a heat exchanger for an automotive vehicle is divided into an upper room and a lower room by a partition wall, on which a positive pressure valve and a negative pressure valve are provided for respectively forming a passageway from the lower room to the upper room when the pressure in the lower room exceeds a predetermined value and a passageway from the upper room to the lower room when the pressure in the lower room becomes lower than a predetermined value, whereby the upper room serves as a reserve tank.