US3750470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow sonde for measuring the total pressure and the static pressure of a flow
Assignee: DORNIER AG
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Filing: 1971-10-18
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Granted: 1973-08-07
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Expires: 1991-10-18
Abstract
Abstract This invention relates to a flow sonde for measuring the total pressure and the static pressure of a flow comprising a cylindrical forward section, a conical transitional section, a rearward cylindrical section, said forward section having a smaller diameter than said rearward section and the transitions from each section to the next extending in a sharp-edged manner, and aperture means on said sonde for taking the total pressure and the static pressure.
Inventors
- 👤 P Partzsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:03
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/165; G01P13/00; G01P13/02; G01P13/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A flow sonde for measuring the total pressure and the static pressure of a flow, the external configuration of said sonde cOmprising a forward section cylindrical throughout its length enclosing a forward opening communicating with a means for sensing total pressure, a conical transitional section interconnecting said forward section and at least one rearward cylindrical section, said forward section having a smaller diameter than said rearward section and the transitions from each section to the next being in a sharp-edged manner, and aperture means in said rearward cylindrical section for static pressure removal.
Claim 2
Dependent Claim
93 words
A flow sonde for measuring the total pressure and the static pressure of a flow, the external configuration of said sonde cOmprising a forward section cylindrical throughout its length enclosing a forward opening communicating with a means for sensing total pressure, a conical transitional section interconnecting said forward section and at least one rearward cylindrical section, said forward section having a smaller diameter than said rearward section and the transitions from each section to the next being in a sharp-edged manner, and aperture means in said rearward cylindrical section for static pressure removal.
Claim 3
Dependent Claim
28 words
A flow sonde according to claim 1 in which the diameter of the forward section is smaller by at least half of the diameter of the rearward section.
Claim 4
Dependent Claim
27 words
A flow sonde according to claim 1 including Cardan joint means connecting said sonde to a supporting mast and further including tail unit means on said sonde.
References Cited (Backward Citations)
US2554634A
Cited
US2671620A
Cited
US2662402A
Cited
US3267992A
Cited
US3443431A
Cited
US3482445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |