US4148214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the viscosity or consistency of fluids
Assignee: Danske Sukkerfabrikker AS
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Filing: 1977-12-05
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Granted: 1979-04-10
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Expires: 1997-12-05
Abstract
Abstract An apparatus for measuring the viscosity or consistency of fluids, such as liquids, emulsions and suspensions, comprises a hydraulic pressure sensor, such as a pressure transducer, and an impeller rotating in front of the sensor so as to produce a periodically varying flow of fluid in a direction towards the sensor.
Inventors
- 👤 Rud F. Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:08
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
An apparatus for determining the viscosity or consistency of fluids, such as liquids, emulsions and suspensions, comprising a hydraulic pressure sensor means having a sensing area located in the fluid, and an impelling element which is likewise located in the fluid and is so shaped and subjected to movement in such a manner as to produce a periodically varying flow of fluid in a direction towards said sensing area of said pressure sensor means, thereby subjecting said pressure sensor means to periodical pressure variations, which are representative of the viscosity or consistency of the fluid.
Claim 2
Independent Claim
95 words
An apparatus for determining the viscosity or consistency of fluids, such as liquids, emulsions and suspensions, comprising a hydraulic pressure sensor means having a sensing area located in the fluid, and an impelling element which is likewise located in the fluid and is so shaped and subjected to movement in such a manner as to produce a periodically varying flow of fluid in a direction towards said sensing area of said pressure sensor means, thereby subjecting said pressure sensor means to periodical pressure variations, which are representative of the viscosity or consistency of the fluid.
Claim 3
Dependent Claim
16 words
An apparatus as in claim 1, in which said impelling element consists of a rotating body.
Claim 4
Dependent Claim
34 words
An apparatus as in claim 1 in which the impelling element comprises a disk which is fixed to a rotating shaft at an inclination to a plane perpendicular to the axis of the shaft.
Claim 5
Dependent Claim
22 words
An apparatus as in claim 1, in which the impelling element includes at least one impeller are mounted on a rotating shaft.
Claim 6
Dependent Claim
38 words
An apparatus as in claim 4, in which the impeller arms have a U-shaped cross section with the bottom of the U on the side of the impelling element facing said sensing area of said pressure sensor means.
Claim 7
Dependent Claim
17 words
An apparatus as in claim 1, in which said pressure sensor means is an electrical pressure transducer.
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) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |