Patent US3604529A successfully refreshed from Google Patents.
US3604529A
Expired / Lapsed
US
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Apparatus for ultrasonic wave transmission
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1969-05-02
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Granted: 1971-09-14
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Expires: 1989-05-02
Abstract
Abstract A waveguide for the transmission of ultrasonic waves adapted to operate immersed in a liquid consists of a duct capable of transmitting ultrasonic waves produced by a generator at the end of the duct. The duct has an outer jacket defining a closed volume about the duct preventing access of liquid, in which the waveguide is immersed, to the outer surface of the duct. By this means energy loss due to wave scatter at the outer surface of the duct is minimized.
Inventors
- 👤 John Roderick Fothergill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/20; G10K11/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
84 words
A waveguide for the transmission of ultrasonic waves adapted to operate immersed in a liquid, comprising duct means defining a transmission path capable of allowing the passage therethrough of said waves, and jacketing means for said duct means defining a closed discontinuity volume about the duct means for preventing access of liquid, in which the waveguide is immersed, to the outer surface of the duct means to thereby minimize ultrasonic energy loss due to wave scatter at the outer surface of the duct means.
Claim 2
Dependent Claim
84 words
A waveguide for the transmission of ultrasonic waves adapted to operate immersed in a liquid, comprising duct means defining a transmission path capable of allowing the passage therethrough of said waves, and jacketing means for said duct means defining a closed discontinuity volume about the duct means for preventing access of liquid, in which the waveguide is immersed, to the outer surface of the duct means to thereby minimize ultrasonic energy loss due to wave scatter at the outer surface of the duct means.
Claim 3
Dependent Claim
19 words
A waveguide according to claim 1 wherein the discontinuity volume defined about the path contains a gas or vapor.
Claim 4
Dependent Claim
16 words
A waveguide according to claim 1 wherein the discontinuity volume defined about the path is evacuated.
Claim 5
Dependent Claim
40 words
A waveguide according to claim 1 including an ultrasonic wave detector mounted at one end of said duct means. 5 A waveguide according to claim 1 including an ultrasonic wave generator means mounted at one end of said duct means.
Claim 6
Dependent Claim
21 words
A waveguide according to claim 4 wherein an ultrasonic wave generator is also mounted at said end of the duct means.
Claim 7
Dependent Claim
30 words
A waveguide according to claim 1 wherein the duct means contains a liquid and is traversed by a diaphragm for separating the path defined by said duct into two sections.
Claim 8
Dependent Claim
28 words
A waveguide according to claim 1 wherein the duct means contains a solid over a part of the length thereof and a liquid over the remaining length thereof.
Claim 9
Dependent Claim
26 words
A waveguide according to claim 1 including a mirror mounted at the end of said duct to deflect ultrasonic waves into or out of said duct.
Claim 10
Dependent Claim
16 words
A waveguide according to claim 9 including means for varying the reflecting angle of the mirror.
Claim 11
Dependent Claim
14 words
A waveguide according to claim 9 wherein the mirror has a nonplanar reflecting surface.
Claim 12
Dependent Claim
12 words
A waveguide according to claim 11 wherein the mirror surface is concave.
Claim 13
Dependent Claim
22 words
A waveguide according to claim 1 further comprising means for rotating said duct about its longitudinal axis in a stationary mounting therefor.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |