Patent US3959751A successfully refreshed from Google Patents.
US3959751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical transducer having circularly magnetized helically wound magnetostrictive rod
Assignee: Individual
•
Filing: 1974-07-12
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Granted: 1976-05-25
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Expires: 1994-07-12
Abstract
Abstract Electromechanical transducer comprising a helically wound, magnetostrictive rod that is circularly magnetized. Surrounding said rod is a conductive coil.
Inventors
- 👤 Ivan J. Garshelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:33
CPC Classifications
H; H01; H01H; H01H55/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
24 words
An electromechanical transducer comprising: a circularly magnetized, magnetostrictive, coiled rod; and a conductive coil wound about a portion at least of said coiled rod.
Claim 2
Dependent Claim
24 words
An electromechanical transducer comprising: a circularly magnetized, magnetostrictive, coiled rod; and a conductive coil wound about a portion at least of said coiled rod.
Claim 3
Dependent Claim
21 words
The electromechanical transducer as defined in claim 1, wherein said circular magnetization is caused by the magnetic remanence of said rod.
Claim 4
Dependent Claim
41 words
The electromechanical transducer as defined in claim 1, wherein said coiled rod is electrically conductive, and further uncluding means on said rod for receiving terminals from a DC source to pair a unidirectional current therethrough, whereby to produce said circular magnetization.
Claim 5
Dependent Claim
42 words
The electromechanical transducer as defined in claim 1, wherein said transducer is a mechanical to electrical transducer, further comprising means for moving one end of said rod relative to the other end, and a pair of output terminals for said conductive coil.
Claim 6
Dependent Claim
30 words
The electromechanical transducer as defined in claim 4, wherein said means for moving said end of the rod is vibratory, whereby to produce an AC voltage at said output terminals.
Claim 7
Dependent Claim
26 words
The electromechanical transducer as defined in claim 4, wherein said means for moving said end of the rod is unidirectional, whereby to produce a unidirectional pulse.
Claim 8
Dependent Claim
29 words
The electromechanical transducer as defined in claim 1, wherein said transducer is an electrical to mechanical transducer, and further comprising means for applying a voltage to said conductive coil.
Claim 9
Dependent Claim
29 words
The electromechanical transducer as defined in claim 7, wherein said voltage is a DC voltage, whereby to cause a unidirectional relative displacement between the ends of said coiled rod.
Claim 10
Dependent Claim
28 words
The electromechanical transducer as defined in claim 7, wherein said voltage is an AC voltage, whereby to cause vibratory relative displacement between the ends of said coiled rod.
Claim 11
Dependent Claim
14 words
The electromechanical transducer as defined in claim 1, wherein said coiled rod is solid.
Claim 12
Dependent Claim
15 words
The electromechanical transducer as defined in claim 1, wherein said coiled rod is a tube.
Claim 13
Dependent Claim
23 words
The electromechanical transducer as defined in claim 1, wherein each turn of said conductive coil surrounds only one turn of said coiled rod.
Claim 14
Dependent Claim
29 words
The electromechanical transducer as defined in claim 1, wherein at least a portion of the turns of said conductive coil surround a plurality of turns of said coiled rod.
Claim 15
Dependent Claim
20 words
The electromechanical transducer as defined in claim 1, wherein said coiled rod is in the form of a tapered coil.
Claim 16
Dependent Claim
20 words
The electromechanical transducer as defined in claim 1, wherein said coiled rod is in the form of a planar spiral.
Claim 17
Dependent Claim
19 words
The electromechanical transducer as defined in claim 1, wherein said rod is made of a material that is anhysteritic.
Claim 18
Dependent Claim
26 words
The electromechanical transducer as defined in claim 1, wherein said rod is made of a material that exhibits a substantially linear magnetic induction V-twist strain curve.
Claim 19
Dependent Claim
26 words
The electromechanical transducer as defined in claim 16, wherein said rod is made of a material that exhibits a substantially linear magnetic induction V-twist strain curve.
Claim 20
Dependent Claim
26 words
The electromechanical transducer as defined in claim 1, wherein said rod is made of a material that is hysteresis in its magnetic induction V-twist strain curve.
Claim 21
Dependent Claim
14 words
The electromechanical transducer as defined in claim 19, wherein said hysteresis is substantially rectangular.
References Cited (Backward Citations)
FR941286A
Cited
US2836492A
Cited
US3083353A
Cited
US3015708A
Cited
US3457463A
Cited
US3638153A
Cited
US3753183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |