US4467658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro resistance anemometer
Assignee: Dynamics Technology Inc
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Filing: 1982-03-09
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Granted: 1984-08-28
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Expires: 2002-03-09
Abstract
Abstract A sensor for a hydro resistance anemometer is designed for immersion in a flowing fluid to provide flow velocity information. The sensor is of a cylindrical configuration with a hemispherical nose. A driving electrode extends axially along the sensor and is exposed to the flowing fluid only at the center of the hemispherical surface of the sensor nose. A reference electrode of annular cylindrical configuration is disposed coaxially about the driving electrode and separated therefrom by a dielectric insulating material. The power dissipated through the sensor is typically on the order of only ten milliwatts.
Inventors
- 👤 C. Michael Dube
- 👤 George L. Donohue
- 👤 Ronald A. Blackwelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:45
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/68; G01F1/696; G01F1/684
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A sensor for a hydro resistance anemometer comprising an encapsulating dielectric defining a blunt sensor end for disposition upstream toward a flowing fluid and having a hemispherical shape, a plurality of driving electrodes encapsulated in and laterally covered by said dielectric and having exposed tips uniformly located about the hemispherical surface of said blunt sensor end, and an electrically conductive reference electrode encircling said driving electrodes and bounding said hemispherical surface.
Claim 2
Dependent Claim
71 words
A sensor for a hydro resistance anemometer comprising an encapsulating dielectric defining a blunt sensor end for disposition upstream toward a flowing fluid and having a hemispherical shape, a plurality of driving electrodes encapsulated in and laterally covered by said dielectric and having exposed tips uniformly located about the hemispherical surface of said blunt sensor end, and an electrically conductive reference electrode encircling said driving electrodes and bounding said hemispherical surface.
References Cited (Backward Citations)
US3148541A
Cited
US3352154A
Cited
GB1054357A
Cited
US4016758A
Cited
US4227151A
Cited
GB2056682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |