Sensor for magnetically scanning a moving element in an internal

Details Sensor for magnetically scanning a moving element in an internal Sensor for magnetically scanning a moving element in an internal

1995-09-01

1996-11-26

Strecker, Gerard R.

Measuring and testing

Brake testing

92 5R, 32420716, 324229, 324262, G01M 1500, G01B 714, G01N 2772

Patent

active

055787509

ABSTRACT:
A sensor has a magnetic circuit and an electric circuit for scanning the passage of magnetizable and non-magnetizable material of relatively movable parts. The sensor has a housing made of first and second parts which define an interface between them. The first part of the housing can be mounted to a cylinder wall and includes a portion of a magnetic core. A remaining portion of the magnetic core is embedded in the second housing part and an electric circuit operatively coupled with the magnetic core is mounted entirely in the second housing part so that the interface between the housing parts is free of electrical contacts to thereby prevent signal degradation due to contamination of electrical contacts.

REFERENCES:
patent: 4385297 (1983-05-01), Schmitt et al.
patent: 4839591 (1989-06-01), Nomura et al.
patent: 5455509 (1995-10-01), Semura et al.
Patent Abstracts of Japan, vol. 15, No. 308 (E-1097), Aug. 7, 1991 & JP-A-03 109 816 (Sunx Ltd.) May 9, 1991; Abstract.
Patent Abstracts of Japan, vol. 18, No. 356 (P-1765) Jul. 5, 1994 & JP-A-06 094 684 (Sumitomo Metal Ind. Ltd.) Apr. 8, 1994; Abstract.
Patent Abstracts of Japan, vol. 15, No. 491 (M-1190) Dec. 12, 1991 & JP-A-03 213 641 (Isuzu Ceramics Kenkyusho : KK) Sep. 19, 1991; Abstract.

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