Patent US4459861A successfully refreshed from Google Patents.
US4459861A
Expired / Lapsed
US
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Measuring turbine for high volume, high viscosity fluids
Assignee: Hydrotechnik GmbH
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Filing: 1982-04-01
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Granted: 1984-07-17
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Expires: 2002-04-01
Abstract
Abstract A measuring turbine with a turbine rotor arranged in a flow channel of a measuring tube comprises flow rectifiers, a turbine rotor and an adjusting element capable of influencing the rotating velocity of the turbine rotor through the fluid to be measured. The adjusting element is located after the discharge flow rectifier in the flow channel and is designed to also serve as the discharge connection and the connector fitting. The adjusting element is provided with an element varying the flow cross section of a definite size. The adjusting element preferably has an internal cone with an orifice plate in front of it in the direction of the flow.
Inventors
- 👤 Helmuth Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A turbine for measuring the flow within a flow channel comprising: a flow channel housing; a turbine rotor arranged in the flow channel with its axis in the direction of flow; an inductive pulse detector mounted in said flow channel housing adjacent said turbine rotor; an outlet flow rectifier mounted in said housing immediately downstream of said turbine rotor; and a flow adjusting element immediately downstream of said outlet flow rectifier comprising a discharge connector having an inner orifice plate followed by a varying internal circumference gradually narrowing in the direction of flow.
Claim 2
Dependent Claim
93 words
A turbine for measuring the flow within a flow channel comprising: a flow channel housing; a turbine rotor arranged in the flow channel with its axis in the direction of flow; an inductive pulse detector mounted in said flow channel housing adjacent said turbine rotor; an outlet flow rectifier mounted in said housing immediately downstream of said turbine rotor; and a flow adjusting element immediately downstream of said outlet flow rectifier comprising a discharge connector having an inner orifice plate followed by a varying internal circumference gradually narrowing in the direction of flow.
Claim 3
Dependent Claim
19 words
The turbine of claim 1, wherein said adjusting element further comprises means for connection to said flow channel housing.
Claim 4
Dependent Claim
11 words
The turbine of claim 2, wherein said means comprise external threading.
Claim 5
Dependent Claim
43 words
The turbine of claim 1, wherein said adjusting element displays an internal circumference at least partially in the shape of a cone, said cone having a larger end and a smaller end, said larger end being positioned closer to said outlet flow rectifier.
Claim 6
Dependent Claim
26 words
The turbine of claim 4, wherein the internal circumference of said adjusting element displays the shape of a plurality of cones intersecting and adjacent one another.
Claim 7
Dependent Claim
14 words
The turbine of claim 4 wherein said cone has an inner slope of 8°.
Claim 8
Dependent Claim
17 words
The turbine of claim 6 wherein said inner orifice plate has a diameter of about 21.5 mm.
Claim 9
Dependent Claim
17 words
The turbine of claim 6 wherein said inner orifice plate has a diameter of about 22.5 mm.
Claim 10
Dependent Claim
12 words
The turbine of claim 4 wherein said inner orifice plate is annular.
Claim 11
Dependent Claim
25 words
The turbine of claim 1 comprising a plurality of adjusting elements interchangeable with one another and having internal circumferences of differing slopes from one another.
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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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |