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:
Jun. 15, 1982
Filed:
Jan. 24, 1980
Kazutoshi Otsuka, Hiroshima, JP;
Toyo Kogyo Co., Ltd., Hiroshima, JP;
Abstract
A temperature responsive, pressure operated diaphragm valve assembly for use in association with an automobile internal combustion engine comprises a valve housing having a working chamber on one side of a diaphragm member, a biasing spring used to urge the diaphragm member in one direction with a valving element held in position to close a fluid passage, one end of the fluid passage being communicated to the fuel intake system of the engine and the other end thereof communicated to a source of fluid medium, and a temperature sensor having a parameter, the magnitude of which is variable according to the magnitude of the ambient temperature. The temperature sensor also has a push rod axially movable in response to change in magnitude of the parameter, the movement of the push rod being in turn transmitted to the biasing spring to adjust the biasing force exerted thereby on the diaphragm member. The fluid passage is opened only when the negative pressure introduced into the working chamber overcome the variable biasing force of the biasing spring determined by the engine reference temperature.