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. 27, 1983
Filed:
Dec. 04, 1981
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In an engine cooling water circulation system which comprises a radiator, a water jacket of the engine, a first hose feeding a cooled water from the radiator to the engine water jacket, a second hose feeding a heated water from the engine water jacket to the radiator, a heater core of a passenger room heater, a third hose leading from the engine water jacket to a lower portion of the heater core for feeding the heated water from the engine water jacket to the heater core; and a fourth hose leading from an upper portion of the heater core to the first hose for feeding the cooled water from the heater core to the first hose, there is provided a two-way valve which is disposed in the fourth hose at a portion near the upper portion of the heater core. The two-way valve has a condition wherein the interior of the heater core is communicated with the open air.