US2716337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus responsive to variations in the viscosity of a fluid
Assignee: Stamicarbon BV
•
Filing: 1952-10-07
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Granted: 1955-08-30
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Expires: 1972-10-07
Abstract
No abstract record available.
Inventors
- 👤 Freerk J Fontein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:16
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/04; F15B21/045; F16; F16N; F16N29/00; G; G01; G01N; G01N11/00; G01N11/02; G01N11/04; G01N11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
APPARATUS RESPONSIVE TO VARIATIONS IN VISCOSITY OF A FLUID COMPRISING A FLOW PIPE FOR THE FLUID, A ROTATION CHAMBER AND A FLOW RESTRICTOR IN SAID FLOW PIPE, THE RESISTANCE OF SAID FLOW RESISTOR AND ROTATION CHAMBER VARYING DIFFERENTLY WITH VARIATIONS IN VISCOSITY OF THE FLUID, WHEN FLUID IS FORCED UNDER CONSTANT PRESSURE THROUGH THE FLOW PIPE, DIFFERENTIAL PRESSURE RESPONSIVE APPARATUS CONNECTED TO SAID FLOW PIPE, AT LEAST ONE LEG OF SAID CONNECTION BEING CONNECTED TO THE FLOW PIPE BETWEEN SAID ROTATION CHAMBER AND SAID RESISTOR, AND SAID DIFFERENTIAL PRESSURE RESPONSIVE APPARATUS BEING RESPONSIVE TO RELATIVE CHANGES IN THE RESISTANCE TO FLOW OF FLUID THROUGH SAID ROTATION CHAMBER AND SAID RESISTOR.
Claim 2
Dependent Claim
110 words
APPARATUS RESPONSIVE TO VARIATIONS IN VISCOSITY OF A FLUID COMPRISING A FLOW PIPE FOR THE FLUID, A ROTATION CHAMBER AND A FLOW RESTRICTOR IN SAID FLOW PIPE, THE RESISTANCE OF SAID FLOW RESISTOR AND ROTATION CHAMBER VARYING DIFFERENTLY WITH VARIATIONS IN VISCOSITY OF THE FLUID, WHEN FLUID IS FORCED UNDER CONSTANT PRESSURE THROUGH THE FLOW PIPE, DIFFERENTIAL PRESSURE RESPONSIVE APPARATUS CONNECTED TO SAID FLOW PIPE, AT LEAST ONE LEG OF SAID CONNECTION BEING CONNECTED TO THE FLOW PIPE BETWEEN SAID ROTATION CHAMBER AND SAID RESISTOR, AND SAID DIFFERENTIAL PRESSURE RESPONSIVE APPARATUS BEING RESPONSIVE TO RELATIVE CHANGES IN THE RESISTANCE TO FLOW OF FLUID THROUGH SAID ROTATION CHAMBER AND SAID RESISTOR.
References Cited (Backward Citations)
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US1881200A
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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) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |