Magnetostrictive-compensated core of electromagnetic device
First Claim
Patent Images
1. A core, comprising:
- a plurality of sheets made of a first material that are laminated together to form a main block of the core; and
a plurality of teeth made of a second material;
wherein the plurality of teeth is attached to the main block;
wherein (a) the first material is a magnetostrictive expanding material and the second material is a magnetostrictive contracting material, or (b) the first material is a magnetostrictive contracting material and the second material is a magnetostrictive expanding material;
wherein the core is constructed of the two materials that magnetostrictively counteract one another under the influence of a magnetic field such that the core undergoes about no net change in size due to the magnetostrictive effect.
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Abstract
The present invention eliminates vibration of an electromagnetic device, apparatus or machine caused by magnetostrictive and Joule effects. Specifically, the present invention discloses making an electromagnetic device, apparatus or machine with magnetostrictive contracting and magnetostrictive expanding materials. Once exposed to a magnetic field, the amount of contraction and expansion of the materials should be virtually the same to minimize generation of vibratory energy that can be transmitted from a core to a housing.
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Citations
50 Claims
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1. A core, comprising:
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a plurality of sheets made of a first material that are laminated together to form a main block of the core; and
a plurality of teeth made of a second material;
wherein the plurality of teeth is attached to the main block;
wherein (a) the first material is a magnetostrictive expanding material and the second material is a magnetostrictive contracting material, or (b) the first material is a magnetostrictive contracting material and the second material is a magnetostrictive expanding material;
wherein the core is constructed of the two materials that magnetostrictively counteract one another under the influence of a magnetic field such that the core undergoes about no net change in size due to the magnetostrictive effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A core, comprising:
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a plurality of magnetostrictive contracting sheets; and
a plurality of magnetostrictive expanding sheets;
wherein the magnetostrictive contracting sheets and the magnetostrictive expanding sheets are laminated together to form the core, wherein the core is constructed of the two materials that magnetostrictively counteract one another under the influence of a magnetic field such that the core undergoes about no net change in size due to the magnetostrictive effect. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A core, comprising:
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a plurality of magnetostrictive contracting sheets having a plurality of teeth protruding from an interior perimeter; and
a plurality of magnetostrictive expanding sheets having a plurality of teeth protruding from an interior perimeter;
wherein the magnetostrictive contracting sheets and the magnetostrictive expanding sheets are laminated together to form the core, wherein the core is constructed of the two materials that magnetostrictively counteract one another under the influence of a magnetic field such that the core undergoes about no net change in size due to the magnetostrictive effect. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A core, comprising:
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a plurality of sheets made of a first material that are laminated together to form a main block of the core; and
a plurality of teeth made of a second material;
wherein the plurality of teeth is attached to the main block;
wherein (a) the first material is a magnetostrictive expanding material and the second material is a magnetostrictive contracting material, or (b) the first material is a magnetostrictive contracting material and the second material is a magnetostrictive expanding material;
wherein the core is constructed of the two materials that magnetostrictively counteract one another under the influence of a magnetic field such that the core undergoes a slight contraction due to the magnetostrictive effect. - View Dependent Claims (27, 33, 34, 35, 36)
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- 28. The core of claim 28, wherein each tooth is substantially rectangular in shape having a set of opposing edges each with a groove.
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37. A core, comprising:
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a plurality of magnetostrictive contracting sheets; and
a plurality of magnetostrictive expanding sheets;
wherein the magnetostrictive contracting sheets and the magnetostrictive expanding sheets are laminated together to form the core, counteract one another under the influence of a magnetic field such that the core undergoes a slight contraction due to the magnetostrictive effect. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. A core, comprising:
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a plurality of magnetostrictive contracting sheets having a plurality of teeth protruding from an interior perimeter; and
a plurality of magnetostrictive expanding sheets having a plurality of teeth protruding from an interior perimeter;
wherein the magnetostrictive contracting sheets and the magnetostrictive expanding sheets are laminated together to form the core, wherein the core is constructed of the two materials that magnetostrictively counteract one another under the influence of a magnetic field such that the core undergoes a slight contraction due to the magnetostrictive effect. - View Dependent Claims (46, 47, 48, 49, 50)
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Specification