Patent US3263224A successfully refreshed from Google Patents.
US3263224A
Expired / Lapsed
US
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Salinity monitor
Assignee: Douglas Aircraft Co Inc
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Filing: 1963-06-25
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Granted: 1966-07-26
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Expires: 1983-06-25
Abstract
No abstract record available.
Inventors
- 👤 Berman Maxwell
- 👤 Winslow B M Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:02
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/043; G01N27/045; G01N27/07; Y; Y10; Y10T; Y10T137/00; Y10T137/8158
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SALINITY MONITOR, COMPRISING: A BRIDGE CIRCUIT INCLUDING A PROBE ADAPTED TO SENSE THE CONDUCTIVITY OF A FLUID, SAID BRIDGE CIRCUIT BEING UNBALANCED IN FIRST AND SECOND DIRECTIONS ACCORDING TO THE CONDUCTIVITY OF SAID FLUID BEING RESPECTIVELY BELOW AND ABOVE A PREDETERMINED LEVEL OF CONDUCTIVITY, AND PRODUCING A BRIDGE OUTPUT SIGNAL HAVING A FIRST PHASE CONDITION WHEN SAID BRIDGE CIRCUIT IS UNBALANCED IN SAID FIRST DIRECTION AND A SECOND PHASE CONDITION WHEN SAID BRIDGE CIRCUIT IS UNBALANCED IN SAID SECOND DIRECTION; MEANS FOR AMPLIFYING SAID BRIDGE OUTPUT SIGNAL; AND RELAY MEANS CONNECTED TO SAID AMPLIFYING MEANS AND RESPONSIVELY ACTUATED IN A FIRST CONDITION FOR AN AMPLIFIED BRIDGE OUTPUT SIGNAL OF SAID FIRST PHASE CONDITION AND IN A SECOND CONDITION FOR AN AMPLIFIED BRIDGE OUTPUT SIGNAL OF SAID SECOND PHASE CONDITION, SAID RELAY MEANS APPLYING A REFERENCE SIGNAL OF SAID SECOND PHASE CONDITION TO SAID AMPLIFYING MEANS WHEN ACTUATED IN SAID FIRST CONDITION FOR VECTORIAL COMBINATION WITH SAID BRIDGE OUTPUT SIGNAL WHEREBY SAID REFERENCE SIGNAL CAN OPPOSE SAID BRIDGE OUTPUT SIGNAL OF SAID FIRST PHASE CONDITION AND AID SAID BRIDGE OUTPUT SIGNAL OF SAID SECOND PHASE CONDITION.
Claim 2
Dependent Claim
186 words
A SALINITY MONITOR, COMPRISING: A BRIDGE CIRCUIT INCLUDING A PROBE ADAPTED TO SENSE THE CONDUCTIVITY OF A FLUID, SAID BRIDGE CIRCUIT BEING UNBALANCED IN FIRST AND SECOND DIRECTIONS ACCORDING TO THE CONDUCTIVITY OF SAID FLUID BEING RESPECTIVELY BELOW AND ABOVE A PREDETERMINED LEVEL OF CONDUCTIVITY, AND PRODUCING A BRIDGE OUTPUT SIGNAL HAVING A FIRST PHASE CONDITION WHEN SAID BRIDGE CIRCUIT IS UNBALANCED IN SAID FIRST DIRECTION AND A SECOND PHASE CONDITION WHEN SAID BRIDGE CIRCUIT IS UNBALANCED IN SAID SECOND DIRECTION; MEANS FOR AMPLIFYING SAID BRIDGE OUTPUT SIGNAL; AND RELAY MEANS CONNECTED TO SAID AMPLIFYING MEANS AND RESPONSIVELY ACTUATED IN A FIRST CONDITION FOR AN AMPLIFIED BRIDGE OUTPUT SIGNAL OF SAID FIRST PHASE CONDITION AND IN A SECOND CONDITION FOR AN AMPLIFIED BRIDGE OUTPUT SIGNAL OF SAID SECOND PHASE CONDITION, SAID RELAY MEANS APPLYING A REFERENCE SIGNAL OF SAID SECOND PHASE CONDITION TO SAID AMPLIFYING MEANS WHEN ACTUATED IN SAID FIRST CONDITION FOR VECTORIAL COMBINATION WITH SAID BRIDGE OUTPUT SIGNAL WHEREBY SAID REFERENCE SIGNAL CAN OPPOSE SAID BRIDGE OUTPUT SIGNAL OF SAID FIRST PHASE CONDITION AND AID SAID BRIDGE OUTPUT SIGNAL OF SAID SECOND PHASE CONDITION.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |