Rotation detection sensor and method for manufacturing a...

Details Rotation detection sensor and method for manufacturing a... Rotation detection sensor and method for manufacturing a...

2005-04-12

2005-04-12

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S260000

Reexamination Certificate

active

06879151

ABSTRACT:
A rotation detection sensor for inhibiting the invasion of high temperature and high pressure fluid includes a holder, a detection element, a case body, and a housing. The tip end portion of the holder at which is located the detection element is accommodated in the case body and the rear end portion of the holder is covered by the housing. A first groove accommodating a first O-ring is formed on the external peripheral surface of the holder, and a second groove accommodating a second O-ring is formed on the external peripheral surface of the holder toward the tip end side relative to the first groove. A method for forming the sensor involves positioning the case body and the holder in a recess portion of a die, and injecting resin into the die to form the housing covering the rear end portion of the holder.

REFERENCES:
patent: 5250925 (1993-10-01), Shinkle
patent: 6054850 (2000-04-01), Hayashi et al.
patent: 2000-310646 (2000-11-01), None

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