Patent US3108230A successfully refreshed from Google Patents.
US3108230A
Expired / Lapsed
US
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Crystal discriminator circuits
Assignee: Pacific Industries Inc
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Filing: 1960-12-06
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Granted: 1963-10-22
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Expires: 1980-12-06
Abstract
No abstract record available.
Inventors
- 👤 Hurtig Carl Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:11
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A DISCRIMINATOR FOR USE WITH THE A LOW IMPEDANCE LOAD AND A LOW IMPEDANCE SOURCE OF FREQUENCY MODULATED SIGNALS, SAID CIRCUIT COMPRISING: A PAIR OF ARMS EACH HAVING ONE OF ITS ENDS CONNECTED TO A FRONT COMMON POINT, ONE ARM CONTAINING A PIEZOELECTRIC ELEMENT HAVING EFFECTIVE SHUNT AND SERIES RESONANCE FREQUENCIES ON OPPOSITE SIDES OF THE CENTER FREQUENCY OF OPERATION, AND THE OTHER ARM HAVING A REACTANCE VALUE ADAPTED TO PRODUCE A ZERO CROSSING OF DISCRIMINATOR RESPONSE INTERMEDIATE THE SAID SHUNT AND SERIES RESONANCE FREQUENCIES; REACTIVE MEANS TO CONNECT SAID FIRST COMMON POINT TO ONE SIDE OF SAID SOURCE;
Claim 2
Dependent Claim
99 words
A DISCRIMINATOR FOR USE WITH THE A LOW IMPEDANCE LOAD AND A LOW IMPEDANCE SOURCE OF FREQUENCY MODULATED SIGNALS, SAID CIRCUIT COMPRISING: A PAIR OF ARMS EACH HAVING ONE OF ITS ENDS CONNECTED TO A FRONT COMMON POINT, ONE ARM CONTAINING A PIEZOELECTRIC ELEMENT HAVING EFFECTIVE SHUNT AND SERIES RESONANCE FREQUENCIES ON OPPOSITE SIDES OF THE CENTER FREQUENCY OF OPERATION, AND THE OTHER ARM HAVING A REACTANCE VALUE ADAPTED TO PRODUCE A ZERO CROSSING OF DISCRIMINATOR RESPONSE INTERMEDIATE THE SAID SHUNT AND SERIES RESONANCE FREQUENCIES; REACTIVE MEANS TO CONNECT SAID FIRST COMMON POINT TO ONE SIDE OF SAID SOURCE;
References Cited (Backward Citations)
US2712600A
Cited
US2849607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |