Patent US4286470A successfully refreshed from Google Patents.
US4286470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp-on ultrasonic transducer
Assignee: LFE Corp
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Filing: 1979-10-19
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Granted: 1981-09-01
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Expires: 1999-10-19
Abstract
Abstract A clamp on ultrasonic transducer having a clamping element which can be positioned around a conduit with the inner portion of the clamping element being formed to fit closely against the outer wall of the conduit, thus defining at a selected position along the conduit a transverse reference plane. The clamping element carries on it one or more channels extending parallel to the axis of the conduit with ultrasonic transducing elements adjustably mounted on those channels such that their contact pressure with the conduit can be independently adjusted. The ultrasonic transducing elements then form a path of ultrasonic interrogation in a plane parallel to the axis of the conduit and at a position defined by the transverse reference plane.
Inventors
- 👤 Lawrence C. Lynnworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:03
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/24; G01N29/2487; G01F; G01F1/00; G01F1/66; G01F1/662; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02836; G01N2291/04; G01N2291/042; G01N2291/0427
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
An ultrasonic transducer for measuring ultrasonic wave propagation in a medium contained within a generally cylindrical conduit comprising, a movable clamp having an inner periphery closely fitted to the outer periphery of said conduit in a plane transverse to the axis of said cylinder, means for securely fastening said clamp to said conduit thereby defining a plane transverse to said cylinder axis at a fixed point on said axis, a support member rigidly fixed to said clamp and extending in a direction parallel to said cylinder axis, said support member thereby defining a second plane parallel to said cylinder axis, and at least one transducer element removably carried on said support member for propagating ultrasonic waves into said conduit along an interrogation path within said medium.
Claim 2
Dependent Claim
126 words
An ultrasonic transducer for measuring ultrasonic wave propagation in a medium contained within a generally cylindrical conduit comprising, a movable clamp having an inner periphery closely fitted to the outer periphery of said conduit in a plane transverse to the axis of said cylinder, means for securely fastening said clamp to said conduit thereby defining a plane transverse to said cylinder axis at a fixed point on said axis, a support member rigidly fixed to said clamp and extending in a direction parallel to said cylinder axis, said support member thereby defining a second plane parallel to said cylinder axis, and at least one transducer element removably carried on said support member for propagating ultrasonic waves into said conduit along an interrogation path within said medium.
Claim 3
Dependent Claim
64 words
Apparatus in accordance with claim 1 wherein said support member extends on either side of said clamp, said one transducer element positioned on said support member on one side of said clamp and further including a second transducing element positioned on said support member on the other side of said clamp at the opposite end of said interrogation path from said first transducing element.
Claim 4
Dependent Claim
25 words
Apparatus in accordance with claim 1 and further including coupling adjustment means for adjusting the pressure of contact between said transducing element and said conduit.
Claim 5
Dependent Claim
21 words
An ultrasonic transducer in accordance with claim 1 wherein the inner periphery of said removable clamp is provided with a gasket.
Claim 6
Dependent Claim
26 words
A transducer in accordance with claim 1 where in said transducing element may be carried at any of a plurality of positions along said support members.
Claim 7
Dependent Claim
160 words
An ultrasonic transducer for measuring ultrasonic wave propagation in a medium contained within a generally cylindrical conduit comprising: a removable clamp having an inner periphery closely fitted to the outer periphery of said conduit in a plane transverse to the axis of said cylinder; means for securely fastening said clamp to said conduit thereby defining a plane transverse to said cylinder axis at a fixed point on said axis; at least one support member rigidly fixed to said clamp and extending in a direction parallel to said cylinder axis, said support member thereby defining a second plane parallel to said cylinder axis; one or more transducer elements carried on said support member for propagating ultrasonic waves into said conduit along an interrogation path within said medium; coupling adjustment means carried on said support member for adjusting the pressure of contact between said transducer elements and said conduit, and force balancing means adapted to balance the coupling adjustment forces so generated.
Claim 8
Dependent Claim
160 words
An ultrasonic transducer for measuring ultrasonic wave propagation in a medium contained within a generally cylindrical conduit comprising: a removable clamp having an inner periphery closely fitted to the outer periphery of said conduit in a plane transverse to the axis of said cylinder; means for securely fastening said clamp to said conduit thereby defining a plane transverse to said cylinder axis at a fixed point on said axis; at least one support member rigidly fixed to said clamp and extending in a direction parallel to said cylinder axis, said support member thereby defining a second plane parallel to said cylinder axis; one or more transducer elements carried on said support member for propagating ultrasonic waves into said conduit along an interrogation path within said medium; coupling adjustment means carried on said support member for adjusting the pressure of contact between said transducer elements and said conduit, and force balancing means adapted to balance the coupling adjustment forces so generated.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |