US4174630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic anemometer
Assignee: D EXPLOITATION DE PRODUITS ET DE TECHNIQUES Ste
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Filing: 1977-11-03
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Granted: 1979-11-20
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Expires: 1997-11-03
Abstract
Abstract An ultrasonic anemometer wherein there is a fixed supporting framework, transmitter-receiver piezoelectric transducers spaced a predetermined distance apart and making known angles between them, a generator of ultrasonic waves to excite said transmitters, each receiver being connected to an impedance matching circuit, a phasemeter and display means, the phasemeters relating to the various receivers being connected to a computer.
Inventors
- 👤 Jacques A. G. Nicoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/18; G01P5/24; G01P5/245; G01P5/248
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
118 words
An ultrasonic anemometer comprising three pairs of ultrasonic transmitters and receivers, the transmitter and receiver of each pair being spaced apart a predetermined distance along one of three axes having predetermined angles between them, an ultrasonic wave generator electrically coupled to said transmitters and energizing said transmitters to produce acoustic waves, a supporting structure having three intersecting rings defining a sphere, with each of the transmitter-receiver pairs being diametrically opposed to each other on a different one of said rings such that the transmitters and receivers of the three pairs are diametrically opposed to each other on the sphere, a phasemeter coupled to each receiver, and calculating means responsive to signals from said phasemeter for determining wind velocity.
Claim 2
Dependent Claim
118 words
An ultrasonic anemometer comprising three pairs of ultrasonic transmitters and receivers, the transmitter and receiver of each pair being spaced apart a predetermined distance along one of three axes having predetermined angles between them, an ultrasonic wave generator electrically coupled to said transmitters and energizing said transmitters to produce acoustic waves, a supporting structure having three intersecting rings defining a sphere, with each of the transmitter-receiver pairs being diametrically opposed to each other on a different one of said rings such that the transmitters and receivers of the three pairs are diametrically opposed to each other on the sphere, a phasemeter coupled to each receiver, and calculating means responsive to signals from said phasemeter for determining wind velocity.
Claim 3
Dependent Claim
21 words
An anemometer according to claim 1, wherein the supporting structure is fabricated from a material having a low coefficient of expansion.
Claim 4
Dependent Claim
28 words
An anemometer according to claim 1, wherein the transmitters and receivers of the pairs are affixed to the supporting structure through a block made of a shock-absorber material.
Claim 5
Dependent Claim
23 words
An anemometer according to claim 1 further including display means and means including a synchronizing block coupling said display means to said transducers.
Claim 6
Dependent Claim
31 words
An anemometer as recited in claim 1 wherein each of said receivers is coupled to said calculating means via an impedance matching network and each of said phasemeters includes a display.
Claim 7
Dependent Claim
64 words
An anemometer according to claim 1 further including means for removing the influences of variations in temperatures and other physical parameters, said variation removing means including a fourth transmitter-receiver pair and means for supporting the transmitter and receiver of the fourth transmitter-receiver pair diametrically opposed to each other along the sphere defined by said rings and in spaced relationship with the other transmitter-receiver pairs.
Claim 8
Dependent Claim
12 words
An anemometer according to claim 1 wherein said rings are mutually perpendicular.
Claim 9
Dependent Claim
76 words
An ultrasonic anemometer comprising three transmitter-receiver pairs, the transmitter and receiver of each pair being spaced apart along one of three mutually perpendicular axes, an ultrasonic wave generator electrically coupled to said transmitter and energizing said transmitter to produce acoustic waves, a supporting structure supporting said transmitter-receiver pairs so that said transmitter-receiver pairs define a rectangular tetrahedron, a phasemeter coupled to each receiver, and calculating means responsive to signals from said phasemeter for determining wind velocity.
Claim 10
Dependent Claim
76 words
An ultrasonic anemometer comprising three transmitter-receiver pairs, the transmitter and receiver of each pair being spaced apart along one of three mutually perpendicular axes, an ultrasonic wave generator electrically coupled to said transmitter and energizing said transmitter to produce acoustic waves, a supporting structure supporting said transmitter-receiver pairs so that said transmitter-receiver pairs define a rectangular tetrahedron, a phasemeter coupled to each receiver, and calculating means responsive to signals from said phasemeter for determining wind velocity.
Claim 11
Dependent Claim
29 words
An anemometer according to claim 8, wherein so as to remove the influence of the variations in temperature and other physical parameters, said anemometer includes a fourth transmitter-receiver pair.
Claim 12
Dependent Claim
33 words
An ultrasonic anemometer as recited in claim 9 wherein one of said transmitters and receivers of said fourth transmitter-receiver pair is located at the intersection of the three planes defining said rectangular tetrahedron.
Claim 13
Dependent Claim
21 words
An anemometer according to claim 8, wherein the supporting structure is fabricated from a material having a low coefficient of expansion.
Claim 14
Dependent Claim
28 words
An anemometer according to claim 8, wherein the transmitters and receivers of the pairs are affixed to the supporting structure through a block made of a shock-absorber material.
Claim 15
Dependent Claim
23 words
An anemometer according to claim 8 further including display means and means including a synchronizing block coupling said display means to said transducers.
Claim 16
Dependent Claim
31 words
An anemometer as recited in claim 8 wherein each of said receivers is coupled to said calculating means via an impedance matching network and each of said phasemeters includes a display.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |