US3820040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of magnetically variable young's modulus of elasticity and method for control of frequency of electromechanical oscillator
Assignee: International Business Machines Corp
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Filing: 1971-12-30
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Granted: 1974-06-25
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Expires: 1991-12-30
Abstract
Abstract Through the practice of this invention there is achieved control of the vibrational frequency of an electromechanical oscillator. This is achieved by utilizing the change in Young''s modulus of elasticity which occurs for certain materials with applied magnetic field, known as the Delta E-effect. By selective annealing in the presence of specially directed magnetic field, the Delta E-effect is selectively altered along specific directions in the vibrational member. Additionally, by control of the Delta E-effect of a sonic delay line, there is achieved control of the delay time for an acoustic pulse propagating therein.
Inventors
- 👤 B Berry
- 👤 W Pritchet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:46
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
84 words
Method for establishing a given frequency of vibration of an electro-mechanical oscillator comprising the steps of: providing an electro-mechanical oscillator comprising a mechanical member fabricated from an amorphous magnetic material exhibiting substantial Delta E-effect and having natural modes of resonant vibration, and electrical means for maintaining at least one of said natural modes of vibration; and altering the frequency of said one mode of vibration of said member a given amount by applying a magnetic field of a given intensity to said vibrating member.
Claim 2
Dependent Claim
84 words
Method for establishing a given frequency of vibration of an electro-mechanical oscillator comprising the steps of: providing an electro-mechanical oscillator comprising a mechanical member fabricated from an amorphous magnetic material exhibiting substantial Delta E-effect and having natural modes of resonant vibration, and electrical means for maintaining at least one of said natural modes of vibration; and altering the frequency of said one mode of vibration of said member a given amount by applying a magnetic field of a given intensity to said vibrating member.
Claim 3
Dependent Claim
25 words
Method as set forth in claim 1 including the step of varying the direction of said magnetic field a given amount in said vibrating member.
Claim 4
Dependent Claim
34 words
Method as set forth in claim 1 including the step of modifying the magnitude of said Delta E-effect is by annealing said member in the presence of a magnetic field of a given intensity.
Claim 5
Dependent Claim
17 words
Method as set forth in claim 3 wherein said magnetic field is longitudinal in said vibrating member.
Claim 6
Dependent Claim
17 words
Method as set forth in claim 3 wherein said magnetic field is transverse in said vibrating member.
Claim 7
Dependent Claim
60 words
Method for altering the frequency of vibration of a mechanical oscillator comprising the steps of: providing a mechanical oscillator having a natural frequency of oscillation from an amorphous magnetic material exhibiting substantial Delta E-effect; and altering the frequency of vibration of said mechanical oscillator a given amount by applying a magnetic field of a given intensity to said mechanical oscillator.
Claim 8
Dependent Claim
60 words
Method for altering the frequency of vibration of a mechanical oscillator comprising the steps of: providing a mechanical oscillator having a natural frequency of oscillation from an amorphous magnetic material exhibiting substantial Delta E-effect; and altering the frequency of vibration of said mechanical oscillator a given amount by applying a magnetic field of a given intensity to said mechanical oscillator.
Claim 9
Dependent Claim
25 words
Method as set forth in claim 6 including the step of varying the direction of said magnetic field a given amount in said vibrating member.
Claim 10
Dependent Claim
33 words
Method as set forth in claim 6 including the step of modifying the magnitude of said Delta E-effect by annealing said member in the presence of a magnetic field of a given intensity.
Claim 11
Dependent Claim
17 words
Method as set forth in claim 8 wherein said magnetic field is longitudinal in said vibrating member.
Claim 12
Dependent Claim
17 words
Method as set forth in claim 8 wherein said magnetic field is transverse in said vibrating member.
Claim 13
Dependent Claim
87 words
Method for altering the frequency of vibration of a mechanical oscillator comprising the steps of: providing an amorphous magnetic material with substantial Delta E-effect; fabricating from said material a vibrating member of a mechanical oscillator having natural modes of oscillation; applying a variable magnetic field of a given intensity to said vibrating member of said oscillator; and varying the frequency of vibration of said mechanical oscillator a given amount by varying the magnitude of the intensity of said magnetic field applied to said member a given amount.
Claim 14
Dependent Claim
87 words
Method for altering the frequency of vibration of a mechanical oscillator comprising the steps of: providing an amorphous magnetic material with substantial Delta E-effect; fabricating from said material a vibrating member of a mechanical oscillator having natural modes of oscillation; applying a variable magnetic field of a given intensity to said vibrating member of said oscillator; and varying the frequency of vibration of said mechanical oscillator a given amount by varying the magnitude of the intensity of said magnetic field applied to said member a given amount.
Claim 15
Dependent Claim
25 words
Method as set forth in claim 11 including the step of varying the direction of said magnetic field a given amount in said vibrating member.
Claim 16
Dependent Claim
37 words
Method as set forth in claim 11 including the step of modifying the magnitude of said Delta E-effect by a given amount by annealing said member in the presence of a magnetic field of a given intensity.
Claim 17
Dependent Claim
17 words
Method as set forth in claim 11 wherein said magnetic field is longitudinal in said vibrating member.
Claim 18
Dependent Claim
17 words
Method as set forth in claim 11 wherein said magnetic field is transverse in said vibrating member.
Claim 19
Dependent Claim
28 words
Method as set forth in claim 11 wherein said mechanical oscillator is an electro-mechanical oscillator including electrical means for maintaining said frequency of vibration of said vibrating member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |