US3217144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator systems
Assignee: Bendix Corp
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Filing: 1962-08-06
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Granted: 1965-11-09
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Howard D Hinnah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:32
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
MEANS FOR PRODUCING A DIGITAL SIGNAL INDICATIVE OF THE STATE OF A CONDITION, RELATIVE TO A REFERENCE STATE COMPRISING, (A) A VARIABLE FREQUENCY OSCILLATOR SENSITIVE TO SAID CONDITION TO OSCILLATE AT FREQUENCIES INDICATIVE OF THE STATE OF SAID CONDITION INCLUDING A FIRST FREQUENCY WHEN SAID CONDITION IS AT ONE EXTREME STATE IN SAID RANGE AND A SECOND FREQUENCY WHEN SAID CONDITION IS AT THE OTHER EXTREME STATE IN THE RANGE, (B) A FIXED FREQUENCY OSCILLATOR WHOSE FREQUENCY IS FIXED SUCH THAT THE DIFFERENCE BETWEEN SAID FIRST AND SECOND FREQUENCIES IS TO THE DIFFERENCE BETWEEN THE FREQUENCY OF SAID FIXED FREQUENCY OSCILLATOR AND SAID SECOND FREQUENCY AS THE DIFFERENCE BETWEEN SAID FIRST AND SECOND STATES OF SAID CONDITION IS TO THE DIFFERENCE BETWEEN SAID REFERENCE STATE AND SAID SECOND STATE OF SAID CONDITION,
Claim 2
Dependent Claim
132 words
MEANS FOR PRODUCING A DIGITAL SIGNAL INDICATIVE OF THE STATE OF A CONDITION, RELATIVE TO A REFERENCE STATE COMPRISING, (A) A VARIABLE FREQUENCY OSCILLATOR SENSITIVE TO SAID CONDITION TO OSCILLATE AT FREQUENCIES INDICATIVE OF THE STATE OF SAID CONDITION INCLUDING A FIRST FREQUENCY WHEN SAID CONDITION IS AT ONE EXTREME STATE IN SAID RANGE AND A SECOND FREQUENCY WHEN SAID CONDITION IS AT THE OTHER EXTREME STATE IN THE RANGE, (B) A FIXED FREQUENCY OSCILLATOR WHOSE FREQUENCY IS FIXED SUCH THAT THE DIFFERENCE BETWEEN SAID FIRST AND SECOND FREQUENCIES IS TO THE DIFFERENCE BETWEEN THE FREQUENCY OF SAID FIXED FREQUENCY OSCILLATOR AND SAID SECOND FREQUENCY AS THE DIFFERENCE BETWEEN SAID FIRST AND SECOND STATES OF SAID CONDITION IS TO THE DIFFERENCE BETWEEN SAID REFERENCE STATE AND SAID SECOND STATE OF SAID CONDITION,
References Cited (Backward Citations)
US2835868A
Cited
US2828468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |