US3589188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine-type flow meter
Assignee: Societe Grenobloise dEtudes et dApplications Hydrauliques SA SOGREAH
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Filing: 1968-07-31
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Granted: 1971-06-29
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Expires: 1988-07-31
Abstract
Abstract There is disclosed an axial flow turbine-type flow meter in which a rotor having helical blades is supported to rotate on a shaft disposed axially of a conduit having a cross section graduated along the length thereof. This shaft in turn is supported from the walls of the conduit on elastic flexible members which yield under the stress of a flow of fluid through the conduit so that the rotor shifts axially of the conduit through small distances in accordance with the rate of flow of fluid. In order to vary the amount of this shift produced by given rates of flow, means are provided to vary the effective length of at least one of these flexible members.
Inventors
- 👤 Pierre Belle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:47
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
60 words
A turbine-type flow meter comprising a conduit having a portion of graduated cross section, a rotor having vanes, flexible rotor support means affixed at one portion thereof to said conduit, said rotor being supported on said support means, and means to alter the length of said support means exposed to flexure under influence of a fluid flowing through said conduit.
Claim 2
Dependent Claim
60 words
A turbine-type flow meter comprising a conduit having a portion of graduated cross section, a rotor having vanes, flexible rotor support means affixed at one portion thereof to said conduit, said rotor being supported on said support means, and means to alter the length of said support means exposed to flexure under influence of a fluid flowing through said conduit.
Claim 3
Dependent Claim
29 words
A flow meter according to claim 1 wherein said last-named means comprise means to alter the location along said support means at which it is affixed to said conduit.
Claim 4
Dependent Claim
20 words
A flow meter according to claim 2 wherein said altering means comprise a screw-mounted disc engageable with said support means.
Claim 5
Dependent Claim
29 words
A flow meter according to claim 1 wherein said last-named means comprise means to shield a portion of said flexible support means from the streaming action of said fluid.
Claim 6
Dependent Claim
27 words
A flow meter according to claim 4 wherein said shielding means are supported on a threaded rod engaged in a nut rotatable with respect to said conduit.
Claim 7
Dependent Claim
31 words
A flow meter according to claim 1 further comprising a stop interposable in the path of said rotor, and means to adjust the position of said stop from outside the conduit.
Claim 8
Dependent Claim
31 words
A flow meter according to claim 6 wherein said stop comprises a cam, and a shaft supporting said cam and extending substantially radially of said conduit and rotatable with respect thereto.
Claim 9
Dependent Claim
57 words
A flow meter according to claim 6 wherein said stop comprises a lever, means fixed with respect to said conduit defining a pivot for said lever at a location between the ends thereof, and a plate rotatable with respect to said conduit, said plate having a groove therein engaged by the radially outer end of said lever.
Claim 10
Dependent Claim
31 words
A flow meter according to claim 8 wherein said lever is provided with a hook on the radially inner end thereof to restrain the rotor against motion laterally of said conduit.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |