US3597642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostrictively driven tuning fork
Assignee: Suwa Seikosha KK
•
Filing: 1969-12-10
•
Granted: 1971-08-03
•
Expires: 1989-12-10
Abstract
Abstract An electrostrictively driven tuning fork having tines of nonuniform thickness and at least one electrostrictive element fixed to the thicker root portion of said tines.
Inventors
- 👤 Kikuo Kurino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:04
CPC Classifications
G; G10; G10G; G10G7/00; G10G7/02; G04; G04C; G04C3/00; G04C3/08; G04C3/10; G04F; G04F5/00; G04F5/04; G04F5/06; G04F5/063; C; C10; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
52 words
An electrostrictively driven tuning fork comprising tines having a root region having a cross-sectional area of a first dimension and an operative region extending from said root region of a cross-sectional area of a second dimension smaller than said first dimension; and at least one electrostrictive element fixed to said root portion.
Claim 2
Dependent Claim
52 words
An electrostrictively driven tuning fork comprising tines having a root region having a cross-sectional area of a first dimension and an operative region extending from said root region of a cross-sectional area of a second dimension smaller than said first dimension; and at least one electrostrictive element fixed to said root portion.
Claim 3
Dependent Claim
18 words
An electrostrictively driven tuning fork as recited in claim 1, wherein said electrostrictive element is formed from PbZrTiO3.
References Cited (Backward Citations)
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US2247960A
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US2581963A
Cited
US2918589A
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |