US3322981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal temperature compensation
Assignee: General Electric Co
•
Filing: 1964-04-29
•
Granted: 1967-05-30
•
Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Brenig Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:05
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/362; H03H; H03H3/00; H03H3/007; H03H3/02; H03H3/04; H03L; H03L1/00; H03L1/02; H03L1/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR, THE COMBINATION INCLUDING A FREQUENCY-DETERMINING CRYSTAL, THE RESONANCE FREQUENCY OF WHICH VARIES AS A FUNCTION OF TEMPERATURE: (A) A NETWORK IN CIRCUIT WITH SAID CRYSTAL FOR VARYING THE LOAD CAPACITANCE IN CIRCUIT WITH SAID CRYSTAL AS A FUNCTION OF TEMPERATURE OVER A DESIRED TEMPERATURE RANGE TO PRODUCE CRYSTAL RESONANCE FREQUENCY VARIATIONS WITH TEMPERATURE WHICH COUNTERACT THE EFFECTS OF TEMPERATURE ON THE CRYSTAL, INCLUDING (B) A FIXED, LINEAR CAPACITANCE MEANS, (C) FIRST AND SECOND BRANCHES, EACH INCLUDING TEMPERATURE-SENSITIVE RESISTANCE BEAMS EFFECTIVE RESPECTIVELY OVER FIRST AND SECOND PORTIONS OF AN OPERATIVE TEMPERATURE RANGE TO VARY THE CAPACITANCE ACROSS THE OUTPUT OF THE NETWORK AS A FUNCTION OF TEMPERATURE, THE TEMPERATURE COEFFICIENTS OF SAID RESISTANCE MEANS BEING SO CHOSEN AS TO PROVIDE CAPACITANCE-TEMPERATURE CHARACTERISTICS WITH SLOPES OF PREDETERMINED SINES AND MAGNITUDES OVER SAID FIRST AND SECOND PORTIONS.
Claim 2
Dependent Claim
139 words
IN A TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR, THE COMBINATION INCLUDING A FREQUENCY-DETERMINING CRYSTAL, THE RESONANCE FREQUENCY OF WHICH VARIES AS A FUNCTION OF TEMPERATURE: (A) A NETWORK IN CIRCUIT WITH SAID CRYSTAL FOR VARYING THE LOAD CAPACITANCE IN CIRCUIT WITH SAID CRYSTAL AS A FUNCTION OF TEMPERATURE OVER A DESIRED TEMPERATURE RANGE TO PRODUCE CRYSTAL RESONANCE FREQUENCY VARIATIONS WITH TEMPERATURE WHICH COUNTERACT THE EFFECTS OF TEMPERATURE ON THE CRYSTAL, INCLUDING (B) A FIXED, LINEAR CAPACITANCE MEANS, (C) FIRST AND SECOND BRANCHES, EACH INCLUDING TEMPERATURE-SENSITIVE RESISTANCE BEAMS EFFECTIVE RESPECTIVELY OVER FIRST AND SECOND PORTIONS OF AN OPERATIVE TEMPERATURE RANGE TO VARY THE CAPACITANCE ACROSS THE OUTPUT OF THE NETWORK AS A FUNCTION OF TEMPERATURE, THE TEMPERATURE COEFFICIENTS OF SAID RESISTANCE MEANS BEING SO CHOSEN AS TO PROVIDE CAPACITANCE-TEMPERATURE CHARACTERISTICS WITH SLOPES OF PREDETERMINED SINES AND MAGNITUDES OVER SAID FIRST AND SECOND PORTIONS.
References Cited (Backward Citations)
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US3054966A
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US3176244A
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US3260960A
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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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |