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:
Nov. 21, 1978
Filed:
Nov. 05, 1976
Nippon Denso Co., Ltd., Kariya, JP;
Abstract
A thermostatic valve mounted in an air cleaner has an inlet connected to an intake manifold of an engine and an outlet connected to a negative pressure chamber of a negative pressure motor for actuating a switching valve pivotally mounted in a throat of the air cleaner, by the opening of the switching valve warmed air around an exhaust manifold of the engine being introduced into the air cleaner for the purpose of ensuring a smooth starting and operation of the engine. The thermostatic valve, for controlling the introduction of the warmed air as well as an amount of additional air fed to the engine as a function of the temperature in the air cleaner, has inside thereof a first passageway communicating the inlet with the inside thereof, a second passageway communicating the outlet with the inside and a third passageway communicating the inside with the air cleaner. A valve member is operatively disposed in both of the first and third passageways for respectively controlling the opening area of the first passageway and the opening and closing of the third passageway, so that the amount of the additional air is controlled through the first passageway and the application of the negative pressure from the intake manifold to the negative pressure motor is controlled by the closure and opening of the third passageway.