EP0339746A3 - Stützvorrichtung für einen akustischen Wandler in Form eines Woodschen Horns - Google Patents
Stützvorrichtung für einen akustischen Wandler in Form eines Woodschen Horns Download PDFInfo
- Publication number
- EP0339746A3 EP0339746A3 EP19890201068 EP89201068A EP0339746A3 EP 0339746 A3 EP0339746 A3 EP 0339746A3 EP 19890201068 EP19890201068 EP 19890201068 EP 89201068 A EP89201068 A EP 89201068A EP 0339746 A3 EP0339746 A3 EP 0339746A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- horn
- wood
- shape
- acoustic transducer
- transducer backing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18775488A | 1988-04-29 | 1988-04-29 | |
US187754 | 1988-04-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0339746A2 EP0339746A2 (de) | 1989-11-02 |
EP0339746A3 true EP0339746A3 (de) | 1991-07-03 |
Family
ID=22690329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890201068 Withdrawn EP0339746A3 (de) | 1988-04-29 | 1989-04-25 | Stützvorrichtung für einen akustischen Wandler in Form eines Woodschen Horns |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0339746A3 (de) |
NO (1) | NO891761L (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2743653A1 (de) * | 2012-12-13 | 2014-06-18 | Sick Ag | Ultraschallwandler und Verfahren zum Erzeugen und/oder Aufnehmen von Ultraschallsignalen |
US10443375B2 (en) | 2014-12-30 | 2019-10-15 | Halliburton Energy Services, Inc. | Adjustable acoustic transducers for a downhole tool |
US20240118446A1 (en) * | 2022-10-07 | 2024-04-11 | Halliburton Energy Services, Inc. | Wedge-Cut Backing Of Acoustic Transducer For Improved Attenuation |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB705080A (en) * | 1951-06-06 | 1954-03-10 | Marconi Wireless Telegraph Co | Improvements in or relating to ultra-sonic wave absorption apparatus |
GB869582A (en) * | 1957-08-19 | 1961-05-31 | Chirana Praha | Mechanical damping member for an electroacoustic transducer |
US3403271A (en) * | 1966-02-09 | 1968-09-24 | Hewlett Packard Co | Ultrasonic transducer with absorptive load |
-
1989
- 1989-04-25 EP EP19890201068 patent/EP0339746A3/de not_active Withdrawn
- 1989-04-27 NO NO89891761A patent/NO891761L/no unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB705080A (en) * | 1951-06-06 | 1954-03-10 | Marconi Wireless Telegraph Co | Improvements in or relating to ultra-sonic wave absorption apparatus |
GB869582A (en) * | 1957-08-19 | 1961-05-31 | Chirana Praha | Mechanical damping member for an electroacoustic transducer |
US3403271A (en) * | 1966-02-09 | 1968-09-24 | Hewlett Packard Co | Ultrasonic transducer with absorptive load |
Non-Patent Citations (1)
Title |
---|
IEEE TRANS. ON SONICS AND ULTRASONICS, vol. SU-26, no. 2, March 1979, pages 140-142, New York, US; R.G. SWARTZ et al.: "An improved wedge-type backing for piezoelectric transducers" * |
Also Published As
Publication number | Publication date |
---|---|
NO891761D0 (no) | 1989-04-27 |
NO891761L (no) | 1989-10-30 |
EP0339746A2 (de) | 1989-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB NL |
|
17P | Request for examination filed |
Effective date: 19911206 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19931103 |