US3341773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impedance measuring bridge utilizing delta bridge networks for balancing out spurious effects
Assignee: JULIE RES LAB Inc
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Filing: 1966-06-22
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Granted: 1967-09-12
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Expires: 1986-06-22
Abstract
No abstract record available.
Inventors
- 👤 Julie Loebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:29
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/10; G01R17/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
THE METHOD OF MEASURING AN IMPEDANCE IN A BRIDGE COMPRISING: FOUR BRIDGE ARMS, A PAIR OF BRIDGE CROSS ARMS, POWER SOURCE MEANS AND NULL INDICATOR MEANS IN RESPECTIVE BRIDGE CROSS ARMS, TERMINAL ENDS CONNECTED TO THE ENDS OF SAID BRIDGE ARMS, MEANS INCLUDING FIRST, SECOND AND THIRD IMPEDANCE NETWORKS IN DELTA ARRAY FOR PROVIDING RESPECTIVE BRIDGE LOOP JUNCTIONS, SAID FIRST AND SECOND NETWORKS HAVING RESPECTIVE EQUIVALENT Y IMPEDANCES J AND O AND JUNCTIONS FOR INTERCONNECTING CORRELATED PAIRS OF BRIDGE ARMS AND FOR CONNECTING A CORRELATED CROSS ARM, ADJACENT TERMINAL ENDS OF FIRST AND SECOND OF SAID BRIDGE ARMS BEING INTERCONNECTED BY SAID FIRST DELTA NETWORK, ADJACENT TERMINAL ENDS OF THIRD AND FOURTH OF SAID BRIDGE ARMS BEING INTERCONNECTED BY SAID SECOND DELTA NETWORK, SAID FIRST AND SECOND DELTA NETWORKS ALSO BEING CONNECTED TO A FIRST OF SAID CROSS ARMS, ADJACENT TERMINAL ENDS OF SAID FIRST AND THIRD BRIDGE ARMS BEING INTERCONNECTED BY SAID THIRD DELTA NETWORK, ONE OF SAID FIRST AND THIRD BRIDGE ARMS BEING AN IMPEDANCE UNDER MEASUREMENT, THE IMPEDANCES OF SAID SECOND AND FOURTH BRIDGE ARMS BEING C''-4 AND D''-O RESPECTIVELY, THE SAID SECOND AND FOURTH ARMS AND THE SAID Y IMPEDANCES OF THEIR CONNECTED DELTA NETWORKS HAVING THE RATIO PARAMETERS
Claim 2
Independent Claim
203 words
THE METHOD OF MEASURING AN IMPEDANCE IN A BRIDGE COMPRISING: FOUR BRIDGE ARMS, A PAIR OF BRIDGE CROSS ARMS, POWER SOURCE MEANS AND NULL INDICATOR MEANS IN RESPECTIVE BRIDGE CROSS ARMS, TERMINAL ENDS CONNECTED TO THE ENDS OF SAID BRIDGE ARMS, MEANS INCLUDING FIRST, SECOND AND THIRD IMPEDANCE NETWORKS IN DELTA ARRAY FOR PROVIDING RESPECTIVE BRIDGE LOOP JUNCTIONS, SAID FIRST AND SECOND NETWORKS HAVING RESPECTIVE EQUIVALENT Y IMPEDANCES J AND O AND JUNCTIONS FOR INTERCONNECTING CORRELATED PAIRS OF BRIDGE ARMS AND FOR CONNECTING A CORRELATED CROSS ARM, ADJACENT TERMINAL ENDS OF FIRST AND SECOND OF SAID BRIDGE ARMS BEING INTERCONNECTED BY SAID FIRST DELTA NETWORK, ADJACENT TERMINAL ENDS OF THIRD AND FOURTH OF SAID BRIDGE ARMS BEING INTERCONNECTED BY SAID SECOND DELTA NETWORK, SAID FIRST AND SECOND DELTA NETWORKS ALSO BEING CONNECTED TO A FIRST OF SAID CROSS ARMS, ADJACENT TERMINAL ENDS OF SAID FIRST AND THIRD BRIDGE ARMS BEING INTERCONNECTED BY SAID THIRD DELTA NETWORK, ONE OF SAID FIRST AND THIRD BRIDGE ARMS BEING AN IMPEDANCE UNDER MEASUREMENT, THE IMPEDANCES OF SAID SECOND AND FOURTH BRIDGE ARMS BEING C''-4 AND D''-O RESPECTIVELY, THE SAID SECOND AND FOURTH ARMS AND THE SAID Y IMPEDANCES OF THEIR CONNECTED DELTA NETWORKS HAVING THE RATIO PARAMETERS
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |