US3760482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adjusting frequency of tuning fork type vibrator
Assignee: Suwa Seikosha KK
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Filing: 1972-05-18
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Granted: 1973-09-25
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Expires: 1992-05-18
Abstract
Abstract A tuning fork type vibrator is formed with a root portion not more than three times as thick as the region of the tines adjacent said root portion. Frequency balance is achieved by cutting off portions of the root portion in the region adjacent the tine having the higher frequency. The frequency of the vibrator as a whole is adjusted by cutting off symmetrical portions of said root portion.
Inventors
- 👤 Y Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:38
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/08; G04C3/10; G04C3/101; G04C3/107; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4957; Y10T29/49574
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A method of adjusting the frequency of a tuning fork type vibrator comprising the steps of forming a tuning fork type vibrator having a root portion of a thickness not more than three times the thickness of the region of the tines adjacent said root portion, said vibrator being formed with a frequency higher than the desired predetermined frequency; and cutting away symmetrical portions of said root portion relative to the axis of symmetry of said vibrator until the actual frequency of said vibrator is substantially equal to said predetermined frequency.
Claim 2
Independent Claim
91 words
A method of adjusting the frequency of a tuning fork type vibrator comprising the steps of forming a tuning fork type vibrator having a root portion of a thickness not more than three times the thickness of the region of the tines adjacent said root portion, said vibrator being formed with a frequency higher than the desired predetermined frequency; and cutting away symmetrical portions of said root portion relative to the axis of symmetry of said vibrator until the actual frequency of said vibrator is substantially equal to said predetermined frequency.
Claim 3
Dependent Claim
47 words
The method of claim 1, including the further step of balancing said vibrator by cutting away portions of said root portion on the same side of said axis of symmetry as the tine having the higher frequency until the frequencies of the two tines are substantially equal.
Claim 4
Independent Claim
54 words
The method of balancing the frequency of a tuning fork type vibrator comprising the step of cutting away portions of the root portion of the vibrator on the same side of the axis of symmetry of said vibrator as the tine having the higher frequency until the frequencies of said tines are substantially equal.
Claim 5
Independent Claim
54 words
The method of balancing the frequency of a tuning fork type vibrator comprising the step of cutting away portions of the root portion of the vibrator on the same side of the axis of symmetry of said vibrator as the tine having the higher frequency until the frequencies of said tines are substantially equal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |