GB1382703A - Delay lines - Google Patents
Delay linesInfo
- Publication number
- GB1382703A GB1382703A GB2273372A GB2273372A GB1382703A GB 1382703 A GB1382703 A GB 1382703A GB 2273372 A GB2273372 A GB 2273372A GB 2273372 A GB2273372 A GB 2273372A GB 1382703 A GB1382703 A GB 1382703A
- Authority
- GB
- United Kingdom
- Prior art keywords
- delay lines
- transducers
- ultrasonic delay
- holes
- glass
- 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
- 239000002250 absorbent Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000005060 rubber Substances 0.000 abstract 1
- 239000005368 silicate glass Substances 0.000 abstract 1
- 239000001993 wax Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/30—Time-delay networks
- H03H9/36—Time-delay networks with non-adjustable delay time
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
1382703 Ultrasonic delay lines MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 15 May 1972 [14 May 1971] 22733/72 Heading H3U Unwanted propagation in an ultrasonic delay line, comprising a body 11 of lead silicate glass, is reduced by polygonal holes 29, 30 adjacent to the path 23-28 of a beam between two transducers 19, 20. The holes may be rectangular, cruciform or star-shaped and may be provided on their walla with energy-absorbent material such as rubber, wax, cement, resin or glass. The transducers 19, 20 are polarized as indicated by arrows 21, 22 respectively. Dimensions and the composition of the body 11 are given. Reference has been directed by the Comptroller to Specification 1,209,760.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3284971A JPS5211549B1 (en) | 1971-05-14 | 1971-05-14 | |
JP47023371A JPS4890647A (en) | 1971-05-14 | 1972-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1382703A true GB1382703A (en) | 1975-02-05 |
Family
ID=26360725
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2273372A Expired GB1382703A (en) | 1971-05-14 | 1972-05-15 | Delay lines |
GB460873A Expired GB1409766A (en) | 1971-05-14 | 1973-01-30 | Ultrasonic delay line |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB460873A Expired GB1409766A (en) | 1971-05-14 | 1973-01-30 | Ultrasonic delay line |
Country Status (8)
Country | Link |
---|---|
US (1) | US3798577A (en) |
JP (1) | JPS4890647A (en) |
AU (2) | AU444943B2 (en) |
CA (2) | CA958085A (en) |
DE (2) | DE2223400B2 (en) |
FR (2) | FR2139419A5 (en) |
GB (2) | GB1382703A (en) |
NL (2) | NL7206138A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3873946A (en) * | 1973-10-04 | 1975-03-25 | Hughes Aircraft Co | Acoustic surface wave tapped delay line |
JPS5710516A (en) * | 1980-06-23 | 1982-01-20 | Matsushita Electric Ind Co Ltd | Comb type filter |
JPS61244112A (en) * | 1985-04-23 | 1986-10-30 | Asahi Glass Co Ltd | Ultrasonic delay line |
US5173667A (en) * | 1991-02-19 | 1992-12-22 | Ford Motor Company | Acoustic wave transmission media delay line having internally disposed absorber channels |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2859415A (en) * | 1952-09-03 | 1958-11-04 | Bell Telephone Labor Inc | Ultrasonic acoustic wave transmission delay lines |
US2839731A (en) * | 1953-01-14 | 1958-06-17 | Bell Telephone Labor Inc | Multi-facet ultrasonic delay line |
GB748438A (en) * | 1953-11-30 | 1956-05-02 | Marconi Wireless Telegraph Co | Improvements in or relating to ultrasonic delay devices |
US3131459A (en) * | 1959-11-09 | 1964-05-05 | Corning Glass Works | Method of bonding absorbing material to a delay line |
US3247473A (en) * | 1959-11-09 | 1966-04-19 | Corning Glass Works | Cold diffusion bond between acoustic delay line and back electrode or acoustic absorber |
NL295653A (en) * | 1962-08-15 | |||
FR1559651A (en) * | 1967-11-15 | 1969-03-14 | ||
GB1171261A (en) * | 1968-02-16 | 1969-11-19 | Mullard Ltd | Improved Ultra-Sonic Delay Line |
JPS5145217B1 (en) * | 1969-12-06 | 1976-12-02 |
-
1972
- 1972-03-06 JP JP47023371A patent/JPS4890647A/ja active Pending
- 1972-05-05 NL NL7206138A patent/NL7206138A/xx unknown
- 1972-05-08 AU AU42016/72A patent/AU444943B2/en not_active Expired
- 1972-05-10 FR FR7216782A patent/FR2139419A5/fr not_active Expired
- 1972-05-10 DE DE2223400A patent/DE2223400B2/en active Granted
- 1972-05-15 CA CA142,097A patent/CA958085A/en not_active Expired
- 1972-05-15 GB GB2273372A patent/GB1382703A/en not_active Expired
- 1972-05-15 CA CA142,099A patent/CA954597A/en not_active Expired
- 1972-05-15 US US00253116A patent/US3798577A/en not_active Expired - Lifetime
- 1972-08-03 NL NL7210669A patent/NL7210669A/xx unknown
- 1972-08-14 DE DE2240406A patent/DE2240406B2/en active Pending
- 1972-08-30 FR FR7230806A patent/FR2175379A5/fr not_active Expired
- 1972-10-10 AU AU47571/72A patent/AU450723B2/en not_active Expired
-
1973
- 1973-01-30 GB GB460873A patent/GB1409766A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1409766A (en) | 1975-10-15 |
CA954597A (en) | 1974-09-10 |
DE2240406A1 (en) | 1973-09-20 |
AU4201672A (en) | 1973-11-15 |
FR2139419A5 (en) | 1973-01-05 |
DE2223400A1 (en) | 1973-01-18 |
DE2240406B2 (en) | 1975-02-20 |
DE2223400C3 (en) | 1975-04-30 |
JPS4890647A (en) | 1973-11-26 |
FR2175379A5 (en) | 1973-10-19 |
NL7206138A (en) | 1972-11-16 |
NL7210669A (en) | 1973-09-10 |
AU4757172A (en) | 1974-05-23 |
US3798577A (en) | 1974-03-19 |
DE2223400B2 (en) | 1974-09-26 |
CA958085A (en) | 1974-11-19 |
AU450723B2 (en) | 1974-07-18 |
AU444943B2 (en) | 1974-02-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
49R | Reference inserted (sect. 9/1949) | ||
PE20 | Patent expired after termination of 20 years |