US3344799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the viscosity of a liquid
Assignee: Hardin Inc
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Filing: 1964-07-20
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Granted: 1967-10-03
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Hardin Jerry Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:15
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2506
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A VISCOSITY CONTROL DEVICE COMPRISING MEANS TO TRANSMIT A BEAM OF LIGHT, MEANS IN THE PATH OF THE BEAM OF LIGHT FOR INTERCEPTING THE LIGHT INCLUDING A PHOTOELECTRIC CELL, A SOURCE OF FLUID, MEANS TO DISCHARGE THE FLUID IN A PATH OF FREE FLOWING FLUID WHEREIN THE DIRECTION OF THE FLUID PATH VARIES WITH THE VISCOSITY OF THE FLUID, MEANS TO POSITION THE PATH OF FLUID SUCH THAT WHEN ITS VISCOSITY IS AT A DESIRED LEVEL, THE FLUID FLOWING IN THE SAID PATH IS AT A PREDETERMINED POSITION RELATIVE TO INTERCEPTION OF THE LIGHT BEAM, AND MEANS RESPONSIVE TO CHANGES IN RECEPTION OF LIGHT BY THE PHOTOELECTRIC CELL RESULTING FROM VARIATIONS IN THE PATH OF SAID FLUID FLOW CAUSED BY CHANGES IN THE FLUID VISCOSITY FOR CONTROLLING THE VISCOSITY OF THE FLUID TO REESTABLISH THE DESIRED VISCOSITY LEVEL, THE LAST NAMED MEANS COMPRISES AN ELECTRIC ELECTRIC CIRCUIT INCLUDING CONTROL MEANS FOR A VALVE AND INCLUDING SWITCH MEANS TO CLOSE THE CIRCUIT AND OPEN THE VALVE IN RESPONSE TO VARIATIONS THE PATH OF FLUID FLOW CAUSED BY CHANGES IN THE FLUID AND MEANS CONNECTED THROUGH THE VALVE FOR DELIVERING THINNER TO THE FLUID WHEN THE VALVE IS OPEN.
Claim 2
Dependent Claim
197 words
A VISCOSITY CONTROL DEVICE COMPRISING MEANS TO TRANSMIT A BEAM OF LIGHT, MEANS IN THE PATH OF THE BEAM OF LIGHT FOR INTERCEPTING THE LIGHT INCLUDING A PHOTOELECTRIC CELL, A SOURCE OF FLUID, MEANS TO DISCHARGE THE FLUID IN A PATH OF FREE FLOWING FLUID WHEREIN THE DIRECTION OF THE FLUID PATH VARIES WITH THE VISCOSITY OF THE FLUID, MEANS TO POSITION THE PATH OF FLUID SUCH THAT WHEN ITS VISCOSITY IS AT A DESIRED LEVEL, THE FLUID FLOWING IN THE SAID PATH IS AT A PREDETERMINED POSITION RELATIVE TO INTERCEPTION OF THE LIGHT BEAM, AND MEANS RESPONSIVE TO CHANGES IN RECEPTION OF LIGHT BY THE PHOTOELECTRIC CELL RESULTING FROM VARIATIONS IN THE PATH OF SAID FLUID FLOW CAUSED BY CHANGES IN THE FLUID VISCOSITY FOR CONTROLLING THE VISCOSITY OF THE FLUID TO REESTABLISH THE DESIRED VISCOSITY LEVEL, THE LAST NAMED MEANS COMPRISES AN ELECTRIC ELECTRIC CIRCUIT INCLUDING CONTROL MEANS FOR A VALVE AND INCLUDING SWITCH MEANS TO CLOSE THE CIRCUIT AND OPEN THE VALVE IN RESPONSE TO VARIATIONS THE PATH OF FLUID FLOW CAUSED BY CHANGES IN THE FLUID AND MEANS CONNECTED THROUGH THE VALVE FOR DELIVERING THINNER TO THE FLUID WHEN THE VALVE IS OPEN.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |