US4787240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid measurement arrangement
Assignee: CALDON Co LP
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Filing: 1987-08-31
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Granted: 1988-11-29
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Expires: 2007-08-31
Abstract
Abstract A pipe section through which a liquid passes includes a transmitting and receiving transducer diametrically opposed on the surface of the pipe and arranged to project acoustic energy through the interior of the pipe whereby the output signal from the receiving transducer changes in the presence of a liquid in the acoustic path between the transducers. V-shaped grooves or other surface modifications are made to the surface of the pipe circumferentially between the transducers so as to redirect wall-borne acoustic energy to a more axial direction thus preventing its reception at the receiving transducer.
Inventors
- 👤 James L. McShane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:18
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/296; G01F23/2968
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
104 words
Apparatus for use in a liquid measuring system, comprising: (A) a structure having an outside wall and an interior in which a liquid is relatively movable; (B) at least one acoustic transducer coupled to said structure and operable to transmit acoustic energy through said wall to said interior; (C) said wall including at least one groove on either side of said transducer, each said groove extending laterally of said transducer; (D) each said groove being constructed and arranged that acoustic energy which would normally be transmitted laterally through said wall will reflect off of said groove and be redirected to an off lateral direction.
Claim 2
Dependent Claim
104 words
Apparatus for use in a liquid measuring system, comprising: (A) a structure having an outside wall and an interior in which a liquid is relatively movable; (B) at least one acoustic transducer coupled to said structure and operable to transmit acoustic energy through said wall to said interior; (C) said wall including at least one groove on either side of said transducer, each said groove extending laterally of said transducer; (D) each said groove being constructed and arranged that acoustic energy which would normally be transmitted laterally through said wall will reflect off of said groove and be redirected to an off lateral direction.
Claim 3
Dependent Claim
11 words
Apparatus according to claim 1 wherein: (A) said grooves are V-shaped.
Claim 4
Dependent Claim
33 words
Apparatus according to claim 1 wherein: (A) said structure is a pipe having a longitudinal axis; (B) said grooves redirect reflected acoustic energy travelling in a circumferential direction to a more axial direction.
Claim 5
Dependent Claim
11 words
Apparatus according to claim 3 wherein: (A) said grooves are circumferential.
Claim 6
Dependent Claim
71 words
Apparatus according to claim 3 which includes: (A) at least a second acoustic transducer coupled to said pipe and being diametrically opposed with respect to said one acoustic transducer; (B) said grooves include a first groove which extends generally circumferentially from one side of said one transducer toward said second transducer and a second groove which extends generally circumferentially from an opposite side of said one transducer toward said second transducer.
Claim 7
Dependent Claim
14 words
Apparatus according to claim 5 wherein: (A) said first and second grooves are V-shaped.
Claim 8
Dependent Claim
24 words
Apparatus according to claim 5 wherein: (A) the axial dimension of each said groove is greater than the axial dimension of each said transducer.
Claim 9
Dependent Claim
15 words
Apparatus according to claim 3 which includes: (A) a plurality of adjacent circumferentially extending grooves.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 3 which includes: (A) a plurality of nonadjacent grooves arranged circumferentially and axially offset from one another.
Claim 11
Dependent Claim
112 words
Apparatus for use in a liquid measuring system, comprising: (A) a structure having an outside wall and an interior in which a liquid is relatively movable; (B) at least one acoustic transducer coupled to said structure and operable to transmit acoustic energy through said wall to said interior; (C) said wall including at least one V-shaped projection portion on either side of said transducer, each said V-shaped projection portion extending laterally of said transducer; (D) each said V-shaped projection portion being constructed and arranged that acoustic energy which would normally be transmitted laterally through said wall will reflect off of said V-shaped projection portion and be redirected to an off lateral direction.
Claim 12
Dependent Claim
112 words
Apparatus for use in a liquid measuring system, comprising: (A) a structure having an outside wall and an interior in which a liquid is relatively movable; (B) at least one acoustic transducer coupled to said structure and operable to transmit acoustic energy through said wall to said interior; (C) said wall including at least one V-shaped projection portion on either side of said transducer, each said V-shaped projection portion extending laterally of said transducer; (D) each said V-shaped projection portion being constructed and arranged that acoustic energy which would normally be transmitted laterally through said wall will reflect off of said V-shaped projection portion and be redirected to an off lateral direction.
References Cited (Backward Citations)
SU309244A1
Cited
US2274262A
Cited
US2990543A
Cited
US3553636A
Cited
SU488983A1
Cited
US4103551A
Cited
US4112773A
Cited
US4265125A
Cited
US4316183A
Cited
JPS5821522A
Cited
GB2129130A
Cited
US4630245A
Cited
US4608507A
Cited
US4683752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |