US4374665A
Expired / Lapsed
US
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Magnetostrictive devices
Assignee: United States Department of the Navy
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Filing: 1981-10-23
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Granted: 1983-02-22
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Expires: 2001-10-23
Abstract
Abstract A magnetostrictive device comprises a magnetostrictive component consisting essentially of an amorphous alloy of iron, boron, lanthanum and lanthanide.
Inventors
- 👤 Norman C. Koon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:44
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/02; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0306; H10; H10N; H10N35/00; H10N35/80; H10N35/85; Y; Y10; Y10S; Y10S73/00; Y10S73/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
144 words
In a magnetostrictive device, the improvement comprising a magnetostrictive component consisting essentially of an amorphous alloy represented by the formula: (M w X x B 1-w-x ) 1-yl (R z La 1-z ) where w is from about 0.7 to about 0.9; x is from 0 to about 0.10; y is from about 0.05 to about 0.15; z is from 0 to about 0.95; M is selected from the class consisting of iron, cobalt, an iron-cobalt alloy, an iron-manganese alloy having at least 50 atomic percent iron, an iron-cobalt-manganese alloy having at least 50 percent iron and cobalt, X is a auxillary glass former selected from the class consisting of phosphorous, carbon, silicon, aluminum, arsenic, germanium, indium, antimony, bismuth, tin, and mixtures thereof, and R is a lanthanide selected from the class consisting of promethium, samarium, terbium, dysprosium, holmium, erbium thulium, and mixtures thereof.
Claim 2
Dependent Claim
144 words
In a magnetostrictive device, the improvement comprising a magnetostrictive component consisting essentially of an amorphous alloy represented by the formula: (M w X x B 1-w-x ) 1-yl (R z La 1-z ) where w is from about 0.7 to about 0.9; x is from 0 to about 0.10; y is from about 0.05 to about 0.15; z is from 0 to about 0.95; M is selected from the class consisting of iron, cobalt, an iron-cobalt alloy, an iron-manganese alloy having at least 50 atomic percent iron, an iron-cobalt-manganese alloy having at least 50 percent iron and cobalt, X is a auxillary glass former selected from the class consisting of phosphorous, carbon, silicon, aluminum, arsenic, germanium, indium, antimony, bismuth, tin, and mixtures thereof, and R is a lanthanide selected from the class consisting of promethium, samarium, terbium, dysprosium, holmium, erbium thulium, and mixtures thereof.
Claim 3
Dependent Claim
9 words
The device of claim 1 wherein M is iron.
Claim 4
Dependent Claim
22 words
The device of claim 2 wherein R is selected from the class consisting of samarium, terbium, dysprosium, holmium, erbium, and mixtures thereof.
Claim 5
Dependent Claim
27 words
The device of claim 2 wherein R is selected from the class consisting of terbium, dysprosium, holmium, and mixtures thereof and z is from 0.5 to 0.75.
Claim 6
Dependent Claim
12 words
The device of claim 3 wherein w is from 0.74 to 0.86.
Claim 7
Dependent Claim
12 words
The device of claim 5 wherein w is from 0.78 to 0.84.
Claim 8
Dependent Claim
12 words
The device of claim 2 wherein z is from 0.30 to 0.75.
Claim 9
Dependent Claim
12 words
The device of claim 7 wherein z is from 0.5 to 0.75.
Claim 10
Dependent Claim
16 words
The device of claim 7 wherein x is 0 and y is from 0.05 to 0.10.
Claim 11
Dependent Claim
28 words
The device of claim 1 wherein M is cobalt and R is selected from the class consisting of promethium, samarium, terbium, dysprosium, holmium, erbium, thulium and mixtures thereof.
Claim 12
Dependent Claim
20 words
The device of claim 10 where R is selected from the class consisting of terbium, dysprosium, holmium and mixtures thereof.
Claim 13
Dependent Claim
25 words
The device of claim 11 wherein w is from 0.78 to 0.84, z is from 0.5 to 0.75, and y is from 0.05 to 0.10.
Claim 14
Dependent Claim
9 words
The device of claim 12 wherein x is 0.
Claim 15
Dependent Claim
21 words
The device of claim 1 wherein M represents Fe a Co 1-a and a is from about 0.01 to about 0.99.
Claim 16
Dependent Claim
29 words
The device of claim 14 wherein R is selected from the class consisting of samarium, terbium, dysprosium, holmium, erbium and mixtures thereof and a is from 0.5 to 0.75.
Claim 17
Dependent Claim
24 words
The device of claim 15 wherein x is zero and R is selected from the class consisting of terbium, dysprosium, holmium, and mixtures thereof.
Claim 18
Dependent Claim
16 words
The device of claim 1 wherein M represents the formula Fe b Mn 1-b wherein 0.5≦b<1.0.
Claim 19
Dependent Claim
7 words
The device of claim 17 wherein 0.7≦b<0.95.
Claim 20
Dependent Claim
18 words
The device of claim 1 wherein M represents Fe d Co e Mn 1-d- where 0.5<(d+e)<1.0 and d>e.
Claim 21
Dependent Claim
9 words
The device of claim 19 wherein 0.75<(d+e)<0.95 and d>2e.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |