Patent US3638153A successfully refreshed from Google Patents.
US3638153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer having single layered magnetostrictive member
Assignee: Honeywell Inc
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Filing: 1970-07-13
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Granted: 1972-01-25
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Expires: 1990-07-13
Abstract
Abstract A magnetomechanical transducer utilizing a single layered magnetostrictive member. A biasing means causes a strain in the magnetostrictive material which gives rise to compressive and tensile stresses in the member. The coefficient of magnetostriction increases or decreases in portions of the member depending on the nature of the stress in the portion. When the member is subjected to a magnetic field the member will deflect as a result of the changed coefficient of magnetostriction.
Inventors
- 👤 Hubert T Sparrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:23
CPC Classifications
H; H10; H10N; H10N35/00; H01; H01F; H01F27/00; H01F27/28; H01F27/2804; H01F27/2819; H04; H04R; H04R15/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A transducer comprising: a single layered member of magnetostrictive material having a predetermined coefficient of magnetostriction; means for producing a strain and for establishing both compressive and tensile stresses in the member and thereby altering the coefficient of magnetostriction in portions of the member; means for applying a magnetic field to establish a magnetic flux path through said magnetostrictive member; said magnetostrictive member deflecting in response to the application of the magnetic field, the deflection being a function of the strain produced in the magnetostrictive member.
Claim 2
Dependent Claim
86 words
A transducer comprising: a single layered member of magnetostrictive material having a predetermined coefficient of magnetostriction; means for producing a strain and for establishing both compressive and tensile stresses in the member and thereby altering the coefficient of magnetostriction in portions of the member; means for applying a magnetic field to establish a magnetic flux path through said magnetostrictive member; said magnetostrictive member deflecting in response to the application of the magnetic field, the deflection being a function of the strain produced in the magnetostrictive member.
Claim 3
Dependent Claim
19 words
A transducer according to claim 1 further comprising a base, said magnetostrictive member being deflectively carried by said base.
Claim 4
Dependent Claim
16 words
A transducer according to claim 2 wherein said means for producing a strain comprises spring means.
Claim 5
Dependent Claim
24 words
A transducer according to claim 3 wherein said magnetostrictive means comprises a beam, one end of said beam being deflectively carried by said base.
Claim 6
Dependent Claim
40 words
A transducer according to claim 1 wherein said means for applying a magnetic field comprises electromagnet means, said magnetostrictive member deflecting in response to varying current in the electromagnet means and in opposition to the strain imposed on the member.
Claim 7
Dependent Claim
27 words
A transducer according to claim 1 additionally comprising means for adjustably varying the strain in said magnetostrictive member whereby hysteresis in said magnetostrictive member is adjustably varied.
Claim 8
Dependent Claim
83 words
A transducer comprising: a valve member having fluid passage means therethrough; a single layered magnetostrictive member having a portion thereof movable with respect to said valve member for controlling flow through said passage; means for producing a strain in the magnetostrictive member; electromagnet means for applying a magnetic field to establish a flux path through said magnetostrictive member; said magnetostrictive member deflecting in response to varying current in the electromagnet means and as a function of the strain produced in the magnetostrictive member.
Claim 9
Dependent Claim
83 words
A transducer comprising: a valve member having fluid passage means therethrough; a single layered magnetostrictive member having a portion thereof movable with respect to said valve member for controlling flow through said passage; means for producing a strain in the magnetostrictive member; electromagnet means for applying a magnetic field to establish a flux path through said magnetostrictive member; said magnetostrictive member deflecting in response to varying current in the electromagnet means and as a function of the strain produced in the magnetostrictive member.
Claim 10
Dependent Claim
39 words
A transducer as in claim 7 wherein one end of said magnetostrictive member is rigidly attached to means connected to said valve member and the other end of said magnetostrictive member is movable with respect to said valve member.
Claim 11
Dependent Claim
42 words
A transducer as in claim 8 wherein the means connecting the attached end of the magnetostrictive member and the valve member is at least in part formed of magnetic material and forms part of a flux path extending through said magnetostrictive member.
References Cited (Backward Citations)
US3288942A
Cited
US3414010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |