GB986574A - Improvements in electro-acoustic measuring and indicating apparatus - Google Patents
Improvements in electro-acoustic measuring and indicating apparatusInfo
- Publication number
- GB986574A GB986574A GB2744961A GB2744961A GB986574A GB 986574 A GB986574 A GB 986574A GB 2744961 A GB2744961 A GB 2744961A GB 2744961 A GB2744961 A GB 2744961A GB 986574 A GB986574 A GB 986574A
- Authority
- GB
- United Kingdom
- Prior art keywords
- depth
- tissue
- pulses
- utilized
- screen
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
986,574. Acoustic-echo distance measurement. J. H. PARK. Oct. 25, 1962 [July 28, 1961], No. 27449/61. Heading H4D. The depth of animal tissue is deduced from the travel time of pressure pulses between a transmitting transducer 2 and a receiving transducer 1 after reflection of a boundary of said tissue. In the embodiment described, the received pulses are utilized as bright-up pulses for a cathode-ray tube display 8 on which a circular trace is produced under the control of the time base circuit 9. The circumferential distance of the bright spot from a given datum is thus a measure of the tissue depth and a suitably calibrated scale superimposed on the screen of the tube may be utilized for direct reading of such depth. The transducer probe 1 comprises a housing of plastic material and to prevent interference a screen 4 is positioned between the two crystal transducers 1, 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2744961A GB986574A (en) | 1961-07-28 | 1961-07-28 | Improvements in electro-acoustic measuring and indicating apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2744961A GB986574A (en) | 1961-07-28 | 1961-07-28 | Improvements in electro-acoustic measuring and indicating apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB986574A true GB986574A (en) | 1965-03-17 |
Family
ID=10259776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2744961A Expired GB986574A (en) | 1961-07-28 | 1961-07-28 | Improvements in electro-acoustic measuring and indicating apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB986574A (en) |
-
1961
- 1961-07-28 GB GB2744961A patent/GB986574A/en not_active Expired
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