Patent ID: 6075359
Filing Date: 2000-06-13
Classification: G01D,G01P

Abstract:
A magnetic sensor comprising:a pole piece having a first end, a second end and a side wall;a sensor magnet adjacent the first end of said pole piece;a housing for receiving and containing said pole piece and said sensor magnet, said housing having an end wall with a hole defined by a rim; anda ferromagnetic metal cap having a floor with an inner surface for receiving the second end of said pole piece thereagainst, said cap having a wall extending from a periphery of the floor to a flange extending radially outward from the wall, said cap disposed within the hole in said housing such that a seal is formed between the rim of the hole and the wall, the flange being embedded in said housing and the wall being spaced apart from the side wall of said pole piece such that the wall is capable of flexing during dimensional changes of the housing due to thermal cycling to maintain the seal between the rim and the wall.