US4182188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airstream pressure sensing probes
Assignee: UK Secretary of State for Defence
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Filing: 1978-06-21
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Granted: 1980-01-08
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Expires: 1998-06-21
Abstract
Abstract A probe includes a dome shaped body and at least four diaphragm pressure transducers mounted in the body with the diaphragms substantially flush with the domed surface of the body, wherein one of the transducers is mounted in the apex of the domed surface and the other transducers are spaced around the domed surface equidistant from the apex mounted transducer. Preferably the dome carries five pressure transducers, four of which are equally spaced around the cone surface.
Inventors
- 👤 John W. Britton
- 👤 John N. Cannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:05
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01L; G01L9/00; G01L9/0041; G01L9/0051
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
An airstream pressure sensing probe comprising a domed body and at least four diaphragm pressure transducers mounted in the body with the diaphragms thereof substantially flush with the domed surface and wherein one of the transducers is mounted in the apex of the domed surface and the other transducers are spaced around the domed surface equidistant from the apex-mounted transducer.
Claim 2
Dependent Claim
60 words
An airstream pressure sensing probe comprising a domed body and at least four diaphragm pressure transducers mounted in the body with the diaphragms thereof substantially flush with the domed surface and wherein one of the transducers is mounted in the apex of the domed surface and the other transducers are spaced around the domed surface equidistant from the apex-mounted transducer.
Claim 3
Dependent Claim
24 words
An airstream pressure sensing probe according to claim 1 comprising five diaphragm pressure transducers of which four are equally spaced around the domed surface.
Claim 4
Dependent Claim
23 words
An airstream pressure sensing probe according to claim 1 or claim 2 in which the dome shaped body has a truncated cone configuration.
Claim 5
Dependent Claim
38 words
An airstream pressure sensing probe according to claim 1, claim 2 or claim 3 in which the pressure transducers are differential pressure transducers and the internal face of each diaphragm is subjected to a steady source of pressure.
Claim 6
Dependent Claim
39 words
An airstream pressure sensing probe according to claim 4 in which the internal faces of the diaphragms are connected to a chamber within the body and the chamber is supplied with air or gas at a steady supply pressure.
Claim 7
Dependent Claim
35 words
An airstream pressure sensing probe according to claim 4 in which the pressure transducers comprise elements bonded to the diaphragms thereof and connected to transmit variations in electrical resistance of the elements to recording means.
Claim 8
Dependent Claim
25 words
An airstream pressure sensing probe according to claim 6 in which variations in electrical resistance of the elements are measured by a Wheatstone bridge circuit.
Claim 9
Dependent Claim
31 words
An airstream pressure sensing probe according to claim 7 further comprising a transducer arranged to measure ambient temperature and connected to apply its output to the bridge circuit for temperature compensation.
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) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |