Patent Number: 6,916,005

Title: Displacement sensor and solenoid valve driver

Abstract: A displacement sensor includes a ferromagnetic member for forming a magnetic path, a coil for generating a magnetic field in the magnetic path when fed with a high-frequency current, and a low-resistance magnetic-shielding member that moves across magnetic flux passing through the magnetic path. The sensor is excellent in production is, robust, and useful in high speed operation.

Inventors: Seo; Kazutaka (Tokyo, JP), Morita; Masao (Tokyo, JP), Takeuchi; Toshie (Tokyo, JP), Yamazaki; Yoshiaki (Tokyo, JP), Yoshizawa; Toshiyuki (Tokyo, JP), Sugawara; Masafumi (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: F01L 9/04 (20060101); G01D 5/12 (20060101); G01D 5/20 (20060101); F16K 031/02 ()

Expiration Date: 07/12/2022