Nippondenso Co., Ltd.

The Furukawa Electric Co., Ltd.

Kiichi Akasaka

Akira Matsuda

Nobuyuki Shibata

Syoji Shiga

Shoji Shiga

Toru Tanigawa

Yoshimasa Oyama

An improved copper radiator for motor cars comprising a plurality of tubes adapted for the flow of a heat-exchanging medium therethrough, fins bonded directly with solder to said tubes to form a copper core and wherein said core is bonded with solder to at least one seat plate, the improvement in that the surface of the fins of said copper radiator has an oxidized layer of a thickness of not more than 1200 .ANG..

Copper radiator for motor cars excellent in corrosion resistance and

In a radiator for motor cars wherein fins are fitted between vertical tubes through which the heat-exchanging medium flows to form a core and tube plates are provided at both ends of the tubes of said core to connect with a resinous tank, a concave groove is formed outside the peripheral portion thereof, and an elastic seal member is provided in said concave groove to insert the open end of the resinous tank, the improvement wherein said tube plates are .alpha. brass containing 15-38 wt. % Zn, 0.05-1.5 wt. % Si, and the remainder Cu.

Radiator for motor cars

Growing community of inventors

Nikko, Japan

Kiichi Akasaka