Sharp Kabushiki Kaisha Corporation

Yuji Dohi

Takefumi Sato

Katsushi Morimoto

Kunio Tanaka

Akira Okamoto

Gouichi Kagiyama

The termite detecting device is placed in an expected invading passage for detecting damage or destruction caused by termites. One configuration of the device includes: a detecting wood sample for attracting termites; a detecting terminal being pressed against the detecting wood sample while the detecting wood sample is supplied with water as required; and a magnetic circuit capable of being opened and closed by the movement of the detecting terminal. When the detecting wood sample is eaten and damaged by termites and becomes fragile, the detecting terminal sinks into the detecting wood sample by virtue of a pressing force and the magnetic circuit is made open. As a result, the device detects the existence of termites. Alternatively, another configuration of the termite detecting device detects vibrations caused by termites so as to detect the invasion of termites. In either device, when a valid signal from a magnetic sensor or a vibration sensor is issued, an indicator disposed in a house is activated to warn in response to the sensor signal. Alternatively the valid signal is transmitted by way of telephone line, etc., to a control center. Thus, the device warns the user of the invasion by termites in an early stage so that the user may take a quick action.

Termite detecting device and a method of detecting termites

In an oil pressure controlled brake system, wherein the brake oil contained within a wheel cylinder is returned to an oil reservoir associated with a master cylinder through an electromagnetic cross valve when the wheel lock or impending lock is detected. The brake system includes a pressure control valve interposed within a feedback loop connecting the electromagnetic cross valve to the oil reservoir. The pressure control valve is so constructed as to suddenly reduce the wheel cylinder pressure to a predetermined value and then gradually reduce the wheel cylinder pressure while the electromagnetic cross valve is energized.

Pressure control valve for use in an antilock brake control system

In a skid control system for fluid actuated brakes of a wheeled vehicle, it is necessary to provide a fault detection unit for detecting a dangerous fault condition of the skid control system and disconnecting the skid control system from an electric source. There is also provided another fault detection unit for detecting a light fault condition of the skid control system and a fault condition of a power circuit during travel of the vehicle, and indicating the fault condition without disconnecting the skid control system from the electric source. The initial condition of the skid control system immediately after power throw is checked and the indication is carried out when the skid control system is in a normal condition, and the indication is eliminated when the velocity of the vehicle exceeds a predetermined value.

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Nara, Japan

Yuji Dohi