Method of fabricating a coil and clamp for variable reluctance transducer
First Claim
1. A method of fabricating an electronic device, comprising the steps of:
- a) providing a coil of conductor and an insulation, said coil of conductor having a coil outer surface and a coil inner surface, said insulation on said coil outer surface, said coil of conductor further comprising a coil length;
b) forming openings in portions of said insulation on said coil outer surface and exposing conductor in said openings for external contacts; and
c) dicing completely through said coil to provide a plurality of short coils, wherein each said short coil has at least one said opening in said insulation, wherein each of said plurality of short coils has a short coil length that is less than said coil length.
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0 Petitions
Accused Products
Abstract
Improved coils and clamps for variable reluctance sensors are disclosed. A method of fabricating a discrete coil involves providing a conductor wound in a coil on a tube. The coil has a coil outer surface that has insulation. A window is opened in the insulation on the coil outer surface to expose conductor of the coil for a contact. A movable core is provided within the tube for adjusting inductance of the coil. In one embodiment, the coil and tube are diced into small coils after the windows for each coil are opened. Another aspect the invention is a clamp comprising an elastic material, a shape memory alloy, and an apparatus for activating the shape memory alloy. The clamp holds the moveable core in its peak position. When the alloy is activated it changes shape and provides a force on the elastic material to change clamping state for resetting the transducer. The coils and clamps can be used for a variety of purposes in addition to the variable reluctance sensors.
42 Citations
64 Claims
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1. A method of fabricating an electronic device, comprising the steps of:
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a) providing a coil of conductor and an insulation, said coil of conductor having a coil outer surface and a coil inner surface, said insulation on said coil outer surface, said coil of conductor further comprising a coil length;
b) forming openings in portions of said insulation on said coil outer surface and exposing conductor in said openings for external contacts; and
c) dicing completely through said coil to provide a plurality of short coils, wherein each said short coil has at least one said opening in said insulation, wherein each of said plurality of short coils has a short coil length that is less than said coil length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A method of fabricating an electronic device, comprising in order, the steps of:
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a) providing a coil of conductor and an insulation, said coil of conductor having a coil outer surface and a coil inner surface, said insulation on said coil outer surface, said coil of conductor further comprising a coil length;
b) forming openings in portions of said insulation on said coil outer surface and exposing conductor in said openings for external contacts;
c) dicing through said coil to provide a plurality of short coils, wherein each said short coil has at least one said opening in said insulation, wherein each of said plurality of short coils has a short coil length that is less than said coil length;
d) providing a substrate;
e) surface mounting said coil to said substrate;
f) mounting additional electronics on said substrate;
g) connecting said additional electronics to said coil; and
h) providing a housing for holding said coil, said substrate, and said additional electronics.
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64. A method of fabricating an electronic device, comprising in order, the steps of:
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a) providing a coil of conductor, an insulation, and a tube, said coil of conductor having a coil outer surface and a coil inner surface, said insulation on said coil outer surface, wherein said tube has a tube outer surface and a tube inner surface, and wherein said coil of conductor and said insulation are on said tube outer surface, further wherein said coil of conductor further comprises a coil length;
b) forming openings in portions of said insulation on said coil outer surface and exposing conductor of said coil for contacts;
c) dicing through said coil to provide a plurality of short coils, wherein each said short coil has at least one said opening in said insulation, wherein each of said plurality of short coils has a short coil length that is less than said coil length; and
d) providing a movable core within said tube and providing for moving said movable core within said tube for adjusting inductance of said coil.
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Specification