Nippon Seiki Co., Ltd.

Tetsuya Satoh

Yoshihiro Kamimura

Yoshiyuki Shimazaki

Kiyoshi Enomoto

Shigeki Koide

Tadao Nakagawa

The present invention provides an inexpensive small-sized liquid level detector. A liquid level detectorincludes a float moving in accordance with variations in liquid level, a hard circuit board, resistorsandprovided on the circuit board, a first sliding pathmade of a plurality of electrodesprovided on the circuit boardand connected to the resistorsand, and a first contactcoming into contact with the first sliding path, and the liquid level detectoroutputs an electrical signal based on the resistances of the resistorsandwhich are varied by the first contactcoming into contact with at least one of the plurality of electrodesforming the first sliding pathin accordance with a variation of the float. A second sliding pathelectrically connected to the first sliding pathis provided on the circuit board, a second contactcoming into contact with the second sliding pathis provided, and each of the first and second contactsandis electrically connected to an external circuit.

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Niigata, Japan

Tetsuya Satoh