Patent US3089502A successfully refreshed from Google Patents.
US3089502A
Expired / Lapsed
US
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Density control apparatus
Assignee: Individual
•
Filing: 1960-07-18
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Granted: 1963-05-14
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Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 James P Davidson
- 👤 Eugene A Glassey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:56
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/10; G01N9/12; G01N9/18; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2504; Y10T137/7287; Y10T137/7358; Y10T137/7365; Y10T137/7413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
DENSITY CONTROL APPARATUS COMPRISING A TANK, AT LEAST TWO FLUID LINES DISCHARGING INTO SAID TANK CONVEYING INTO SAID TANK FLUIDS OF DIFFERENT DENSITIES AND WHEREIN THE DESNITY OF THE COMBINED FLUID IN SAID TANK IS DEPENDENT UPON THE RELATIVE FLOW THROUGH SAID LINES, A HYDROMETER SUSPENDED IN THE COMBINED FLUID IN SAID TANK, AN ARMATURE ON THE UPPER END OF SAID HYDROMETER AND RESPONSIVE TO DENSITY OF SAID COMBINED FLUID, A DIFFERENTIAL TRANSFORMER SURROUNDING SAID ARMATURE AND ENERGIZED RESPONSIVE TO THE POSITION OF SAID ARMATURE, VALVE MEANS FOR ADJUSTING THE FLOW THROUGH AT LEAST ONE OF SAID FLUID LINES, A SERVOMOTOR CONTROLLED BY SAID DIFFERENTIAL TRANSFORMER FOR PROPORTIONATELY ADJUSTING SAID VALVE MEANS TO MAINTIAN THE DENSITY OF SAID COMBINED FLUID AT A PRE-SELECTED LEVEL AND MANUALLY ADJUSTABLE MEANS FOR ADJUSTING SAID ARMA-
Claim 2
Dependent Claim
132 words
DENSITY CONTROL APPARATUS COMPRISING A TANK, AT LEAST TWO FLUID LINES DISCHARGING INTO SAID TANK CONVEYING INTO SAID TANK FLUIDS OF DIFFERENT DENSITIES AND WHEREIN THE DESNITY OF THE COMBINED FLUID IN SAID TANK IS DEPENDENT UPON THE RELATIVE FLOW THROUGH SAID LINES, A HYDROMETER SUSPENDED IN THE COMBINED FLUID IN SAID TANK, AN ARMATURE ON THE UPPER END OF SAID HYDROMETER AND RESPONSIVE TO DENSITY OF SAID COMBINED FLUID, A DIFFERENTIAL TRANSFORMER SURROUNDING SAID ARMATURE AND ENERGIZED RESPONSIVE TO THE POSITION OF SAID ARMATURE, VALVE MEANS FOR ADJUSTING THE FLOW THROUGH AT LEAST ONE OF SAID FLUID LINES, A SERVOMOTOR CONTROLLED BY SAID DIFFERENTIAL TRANSFORMER FOR PROPORTIONATELY ADJUSTING SAID VALVE MEANS TO MAINTIAN THE DENSITY OF SAID COMBINED FLUID AT A PRE-SELECTED LEVEL AND MANUALLY ADJUSTABLE MEANS FOR ADJUSTING SAID ARMA-
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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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |