US4374477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic measuring device
Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
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Filing: 1981-03-24
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Granted: 1983-02-22
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Expires: 2001-03-24
Abstract
Abstract An ultrasonic measuring device for measuring the fluid flow of a high temperature fluid in a conduit. Ultrasonic transducers are mounted on first and second frames which have end portions hingedly coupled to one another. A tightening device at the other ends of the frames are used to secure the frames around the conduit carrying the fluid to be measured. Lead wires extend through hollow pipes between the ultrasonic transducers and connecting terminals at the outward ends thereof. Heat radiating fins may be provided at the outward ends of the pipes. With this construction, the outward ends of the pipes are at room temperature so that ordinary coaxial cables may be joined to the connecting terminals.
Inventors
- 👤 Akira Kikuchi
- 👤 Akio Hagiya
- 👤 Kazuteru Shinkai
- 👤 Masaru Kohno
- 👤 Kiyoshi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/66; G01F1/667; G01N; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02836
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
188 words
An ultrasonic measuring device comprising: two ultrasonic transducers arranged on opposite sides of a pipe in which a fluid to be measured flows, a first of said ultrasonic transducers transmitting an ultrasonic wave towards said fluid and a second of said ultrasonic transducer receiving said ultrasonic wave which has passed through said fluid; a first frame holding said first ultrasonic transducer; a second frame having an end portion holding said second ultrasonic transducer, said first and second frames having end portions hingedly coupled to one another and said first and second frames being mounted on said pipe with said first and second frames clamping said pipe; tightening means for tightening free end portions of said first and second frames together; first and second hollow pipes secured to said first and second frames, respectively; first and second connecting terminals mounted at ends of said first and second hollow pipes, respectively, away from said frames; and lead wires connected at first ends to said two ultrasonic transducers, one of said lead wires being disposed in each of said hollow pipes and being connected at second ends to said connecting terminals.
Claim 2
Dependent Claim
188 words
An ultrasonic measuring device comprising: two ultrasonic transducers arranged on opposite sides of a pipe in which a fluid to be measured flows, a first of said ultrasonic transducers transmitting an ultrasonic wave towards said fluid and a second of said ultrasonic transducer receiving said ultrasonic wave which has passed through said fluid; a first frame holding said first ultrasonic transducer; a second frame having an end portion holding said second ultrasonic transducer, said first and second frames having end portions hingedly coupled to one another and said first and second frames being mounted on said pipe with said first and second frames clamping said pipe; tightening means for tightening free end portions of said first and second frames together; first and second hollow pipes secured to said first and second frames, respectively; first and second connecting terminals mounted at ends of said first and second hollow pipes, respectively, away from said frames; and lead wires connected at first ends to said two ultrasonic transducers, one of said lead wires being disposed in each of said hollow pipes and being connected at second ends to said connecting terminals.
Claim 3
Dependent Claim
26 words
The ultrasonic measuring device as claimed in claim 1 further comprising a heat radiating fin adjacent to said connecting terminal on each of said hollow pipes.
Claim 4
Dependent Claim
23 words
The ultrasonic measuring device as claimed in claim 1 wherein said hollow pipes are formed of a material having a high thermal conductivity.
Claim 5
Dependent Claim
18 words
The ultrasonic measuring device as claimed in claim 1 wherein said hollow pipes are made of stainless steel.
Claim 6
Dependent Claim
29 words
The ultrasonic measuring device of claim 1 further comprising first and second mounting seats for mounting said first and second hollow pipes, respectively, to said first and second frames.
Claim 7
Dependent Claim
17 words
The ultrasonic measuring device of claim 1 further comprising heat insulating material filled in said hollow pipes.
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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |