Nippon Thermostat Co., Ltd.

Masahiro Aburakawa

Hiroshi Suda

Daisuke Tsukamoto

Mitsuhiro Sano

Norio Suda

Susumu Mikami

A molded plastic article having a bonded plastic portionbonding a first body and a second body together; a connecting plastic portion, formed by solidifying the molten plastic flowing out from the plastic channel, having one end connected to the bonding plastic portion; and a flow tab plastic portionformed by solidifying the molten plastic, connected to the other end of the connecting plastic portionconnected to the other end portion of the. A portion of reduced diameteris provided to the flow tab plastic portionon the connecting plastic portion side.

Molded plastic article and method of manufacturing same

An electronically controlled thermostat control method is obtained which makes it possible to eliminate the response delay from the time that the required cooling water temperature is set to the time that the actual cooling water temperature reaches the set water temperature by controlling the flow rate, and to realize high cooling water temperature tracking characteristics with a high degree of precision at a low cost. The method of the present invention is characterized in that in an electronically controlled thermostat which is used to control the cooling water temperature of an engine, and which comprises an actuator that can arbitrarily vary the degree of valve opening without depending only on the actual cooling water temperature, the actuator is controlled by the control controller, which has means for calculating the elapsed time from the powering of the actuator to the variation of the water temperature for predicting the water temperature after the elapsed time when the cooling water temperature is controlled to an arbitrarily set water temperature, and the actuator is controlled in advance in accordance with the above-described predicted water temperature.

Method of controlling electronic controlled thermostat

A thermo element that makes it possible to efficiently raise the temperature of a whole body of wax encapsulated in a case and to obtain a reliable seal structure for a terminal withdrawal portion used to control the electrification of a heating device. The thermo element includes a thermally expanding body encapsulated in a tube-type case, and which allows a moving piston to advance toward and withdraw from the outside of the case with a change in volume of the thermally expanding body that accompanies a variation in the temperature thereof, and a heating element disposed in the case and that thermally affects the thermally expanding body. An electrode member is disposed inside the heating element. Further, a plate spring member, which also serves as a heat radiation fin for radiating heat to the thermally expanding body, is disposed at the outer circumference of the heating element. The plate spring member has a larger surface area than the heating element.

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Tokyo, Japan

Masahiro Aburakawa