Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2011-04-05
2011-04-05
Nguyen, Khanh (Department: 1746)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S272200, C156S060000, C156S001000, C219S121640, C250S453110, C250S492100
Reexamination Certificate
active
07918962
ABSTRACT:
A rotation detector includes a semiconductor chip, a nonmagnetic case body, a biasing permanent magnet and a nonmagnetic cap fixed to the case body, wherein the case body has a joint surface, and the cap has an inside surface in contact with the joint surface. A method of manufacturing the rotation detector includes the following steps: assembling the semiconductor chip, the case body and the biasing permanent magnet into a unit; forming at least one groove adjacent to the joint surface so as to form a space between the joint surface and the inside surface when the cap is fixed to the case body; fixing the cap to the case body so that the inside surface of the cap can be in contact with the joint surface; irradiating a laser beam at portions behind the inside surface of the cap under a prescribed pressure to melt materials of the case body and the cap and to make melted materials flow to the space; and cooling the melted materials to re-crystallize.
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Kawamoto Yasunori
Ogino Akihiko
Okui Yoichi
Sumiya Kazuyoshi
Denso Corporation
Hoover Matthew
Nguyen Khanh
Posz Law Group , PLC
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