US3165692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously operable apparatus and method for counting particles in successive portions of a flowing fluid stream
Assignee: Bayer Corp
•
Filing: 1961-05-15
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Granted: 1965-01-12
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Isreeli Jack
- 👤 Bilichniansky Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:05
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
APPARATUS FOR DETERMINING THE NUMBER OF PARTICLES SUSPENDED IN A LIQUID HAVING A DIFFERENT ELECTRICAL CONDUCTIVITY THAN SAID PARTICLES, COMPRISING A SUBSTANTIALLY ENCLOSED CELL HAVING A LIQUID INLET AND A LIQUID OUTLET AND MEANS PROVIDING A CONSTRICTED FLOW PATH FOR THE LIQUID BETWEEN SAID INLET AND OUTLET, PUMP MEANS CONNECTED TO SAID INLET FOR TRANSMITTING A CONTINUOUS STREAM OF THE LIQUID TO SAID CELL, PUMP MEANS FOR APPLYING A SUCTION TO SAID OUTLET FOR CAUSING THE CONTINUOUS FLOW OF THE LIQUID THROUGH SAID CONSTRICTED FLOW PATH OF SAID OUTLET, AND MEANS FOR MEASURING THE ELECTRICAL CONDUCTIVITY OF SAID FLOW PATH DURING THE FLOW OF THE LIQUID THERETHROUGH AS A MEASUREMENT OF THE NUMBER OF PARTICLES IN SAID LIQUID.
Claim 2
Dependent Claim
118 words
APPARATUS FOR DETERMINING THE NUMBER OF PARTICLES SUSPENDED IN A LIQUID HAVING A DIFFERENT ELECTRICAL CONDUCTIVITY THAN SAID PARTICLES, COMPRISING A SUBSTANTIALLY ENCLOSED CELL HAVING A LIQUID INLET AND A LIQUID OUTLET AND MEANS PROVIDING A CONSTRICTED FLOW PATH FOR THE LIQUID BETWEEN SAID INLET AND OUTLET, PUMP MEANS CONNECTED TO SAID INLET FOR TRANSMITTING A CONTINUOUS STREAM OF THE LIQUID TO SAID CELL, PUMP MEANS FOR APPLYING A SUCTION TO SAID OUTLET FOR CAUSING THE CONTINUOUS FLOW OF THE LIQUID THROUGH SAID CONSTRICTED FLOW PATH OF SAID OUTLET, AND MEANS FOR MEASURING THE ELECTRICAL CONDUCTIVITY OF SAID FLOW PATH DURING THE FLOW OF THE LIQUID THERETHROUGH AS A MEASUREMENT OF THE NUMBER OF PARTICLES IN SAID LIQUID.
Claim 3
Independent Claim
93 words
A METHOD OF CONTINUOUSLY DETERMINED THE NUMBER OF PARTICLES SUSPENDED IN A LIQUID HAVING A DIFFERENT ELECTRICAL CONDUCTIVITY THAN SAID PARTICLES, COMPRISING CONTINUOUSLY TRANSMITTING A STREAM OF THE LIQUID THROUGH A CONDUIT HAVING A CONSTRICTED PASSAGE THEREIN AND ELECTRODES AT OPPOSITE SIDES, RESPECTIVELY, OF SAID PASSAGE FOR SENSING CHANGES IN CONDUCTIVITY OF THE LIQUID AS IT AND A PARTICLE THEREIN FLOWS THROUGH SAID PASSAGE, AND OPERATING ELECTRICAL COUNTING MEANS UNDER THE CONTROL OF SAID SENSING ELECTRODES IN RESPONSE TO CHANGES IN CONDUCTIVITY OF THE PARTICLES-CONTAINING LIQUID AS IT FLOWS THROUGH SAID CONSTRICTED PASSAGE.
Claim 4
Independent Claim
93 words
A METHOD OF CONTINUOUSLY DETERMINED THE NUMBER OF PARTICLES SUSPENDED IN A LIQUID HAVING A DIFFERENT ELECTRICAL CONDUCTIVITY THAN SAID PARTICLES, COMPRISING CONTINUOUSLY TRANSMITTING A STREAM OF THE LIQUID THROUGH A CONDUIT HAVING A CONSTRICTED PASSAGE THEREIN AND ELECTRODES AT OPPOSITE SIDES, RESPECTIVELY, OF SAID PASSAGE FOR SENSING CHANGES IN CONDUCTIVITY OF THE LIQUID AS IT AND A PARTICLE THEREIN FLOWS THROUGH SAID PASSAGE, AND OPERATING ELECTRICAL COUNTING MEANS UNDER THE CONTROL OF SAID SENSING ELECTRODES IN RESPONSE TO CHANGES IN CONDUCTIVITY OF THE PARTICLES-CONTAINING LIQUID AS IT FLOWS THROUGH SAID CONSTRICTED PASSAGE.
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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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |