GB1230036A - - Google Patents

Info

Publication number
GB1230036A
GB1230036A GB1230036DA GB1230036A GB 1230036 A GB1230036 A GB 1230036A GB 1230036D A GB1230036D A GB 1230036DA GB 1230036 A GB1230036 A GB 1230036A
Authority
GB
United Kingdom
Prior art keywords
vibrations
transducer
sides
nov
wavelength
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
Application number
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1230036A publication Critical patent/GB1230036A/en
Expired legal-status Critical Current

Links

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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

1,230,036. Electro-mechanical delay lines. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 6 Nov., 1969 [9 Nov., 1968], No. 54438/69. Heading H3U. A glass delay line body 1 has sides 5, 6 at 135 degrees to the sides 2, 3, carrying input and output piezo-electric transducers 7, 8. Each transducer is polarized in a direction which is parallel to the respective side 5 or 6 and which is also parallel to the upper and lower boundary surfaces 9, 10. Vibrations from the transducer 7 are reflected in succession by the sides 2, 3, 4, 2, 3 before reaching the transducer 8. The thickness d of the body 1 is made smaller than five times the wavelength of the vibrations (preferably, less than twice the wavelength) whereby the surfaces 9, 10 act as reflectors. To prevent reflection of undesired stray vibrations and thus compel the wanted vibrations to follow the path shown in Fig. 1, discrete areas of the surfaces 9, 10 indicated by hatching, are provided with damping material 11 in the form of silicone rubber.
GB1230036D 1968-11-09 1969-11-06 Expired GB1230036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL686816005A NL153046B (en) 1968-11-09 1968-11-09 ULTRASONIC DELAY LINE.

Publications (1)

Publication Number Publication Date
GB1230036A true GB1230036A (en) 1971-04-28

Family

ID=19805112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1230036D Expired GB1230036A (en) 1968-11-09 1969-11-06

Country Status (10)

Country Link
US (1) US3611200A (en)
AT (1) AT294918B (en)
BE (1) BE741467A (en)
CH (1) CH516260A (en)
DE (1) DE6941263U (en)
FR (1) FR2022975A1 (en)
GB (1) GB1230036A (en)
NL (1) NL153046B (en)
SE (1) SE376522B (en)
YU (1) YU36248B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS485637U (en) * 1971-06-03 1973-01-23
JPS4861045A (en) * 1971-12-01 1973-08-27
JPS48102549A (en) * 1972-04-05 1973-12-22
WO1997019563A1 (en) * 1995-11-23 1997-05-29 Philips Electronics N.V. Comb filter module with both composite and y/c-separated inputs

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467295A (en) * 1981-11-25 1984-08-21 Showa Electric Wire & Cable Co., Ltd. Solid ultrasonic delay line
US4684906A (en) * 1985-06-14 1987-08-04 Showa Electric Wire & Cable Co., Ltd. Solid ultrasonic delay line
US7834271B2 (en) * 2008-04-30 2010-11-16 Tyco Electronics Corporation Cabling having shielding separators

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA576053A (en) * 1959-05-19 L. Robinson John Delay line
GB748438A (en) * 1953-11-30 1956-05-02 Marconi Wireless Telegraph Co Improvements in or relating to ultrasonic delay devices
NL277613A (en) * 1961-04-26 1900-01-01
NL297704A (en) * 1962-09-26

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS485637U (en) * 1971-06-03 1973-01-23
JPS4861045A (en) * 1971-12-01 1973-08-27
JPS589603B2 (en) * 1971-12-01 1983-02-22 ミツミ電機株式会社 comb filter
JPS48102549A (en) * 1972-04-05 1973-12-22
WO1997019563A1 (en) * 1995-11-23 1997-05-29 Philips Electronics N.V. Comb filter module with both composite and y/c-separated inputs

Also Published As

Publication number Publication date
YU267569A (en) 1981-06-30
BE741467A (en) 1970-05-08
NL153046B (en) 1977-04-15
DE6941263U (en) 1972-04-06
SE376522B (en) 1975-05-26
AT294918B (en) 1971-12-10
US3611200A (en) 1971-10-05
DE1953412A1 (en) 1970-06-11
YU36248B (en) 1982-02-25
NL6816005A (en) 1970-05-12
DE1953412B2 (en) 1972-08-17
CH516260A (en) 1971-11-30
FR2022975A1 (en) 1970-08-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
433D Application made for revocation (sect. 33/1949)
429A Application made for amendment of specification (sect. 29/1949)
433A Case decided by the comptroller ** patent amended (sect. 33/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SPA Amended specification published
PE20 Patent expired after termination of 20 years