GB1434794A - Acoustic energy transmission device - Google Patents

Acoustic energy transmission device

Info

Publication number
GB1434794A
GB1434794A GB1938673A GB1938673A GB1434794A GB 1434794 A GB1434794 A GB 1434794A GB 1938673 A GB1938673 A GB 1938673A GB 1938673 A GB1938673 A GB 1938673A GB 1434794 A GB1434794 A GB 1434794A
Authority
GB
United Kingdom
Prior art keywords
waveguide
transducer
wafers
annular
parts
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
GB1938673A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1434794A publication Critical patent/GB1434794A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/26—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using modulation of waves other than light, e.g. radio or acoustic waves
    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/24—Methods or devices for transmitting, conducting or directing sound for conducting sound through solid bodies, e.g. wires

Abstract

1434794 Electro-acoustic devices WESTINGHOUSE ELECTRIC CORP 24 April 1973 [4 May 1972] 19386/73 Heading H3U [Also in Division G1] A transmission system for acoustic energy comprises two electro-acoustic transducers connected by a flexible waveguide comprising inorganic fibres bonded together, the fibres constituting at least 40% by volume of the waveguide. The waveguide may be in the form of a single rod, 22, Fig. 2, or a plurality of rods (122, Figs. 3, 4, not shown). In the embodiment of Fig. 2 the waveguide 22 is secured at each end to a transducer head part 28. Each transducer 16 also comprises a tail part 33 and two annular piezo-ceramic wafers 19, 19A which are polarized longitudinally of the transducer and are held against the head 28 by a nut 36 and a Belleville washer 38 on a through bolt 30. The end surfaces 24, 26 of both wafers are silvered and connected to terminals 12, 14, 14A so that when an A.C. potential is applied thereto, longitudinal waves are fed to the waveguide. In the embodiment of Figs. 6, 7 the transducer comprises wafers 119, 119A which each comprise four circumferentially-spaced parts 119B-119E which are coated with silver 120 on their facing walls. The transducer also comprises an annular section 135 to which are cemented the ends of annular spools 137A, 137B, of e.g. P.T.F.E., whose other ends are cemented to the head part 128A and tail part 113A respectively. Circumferentially adjacent wafer parts are longitudinally polarized in opposite directions so that when an A.C. potential is applied via conductors 122, 124 rotational vibrations are delivered to the waveguide 122A. A third embodiment (Figs. 9-11, not shown) comprises one or more wafers having two diametrically opposite parts (119G-119H) with their end surfaces silvered; this arrangement imparts, a rocking, vibratory motion to the waveguide (122B). The device may be used to provide power to a transmitter which emits a signal 8 indicating the current characteristics of a high voltage line (Fig. 1, not shown).
GB1938673A 1972-05-04 1973-04-24 Acoustic energy transmission device Expired GB1434794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25039572A 1972-05-04 1972-05-04

Publications (1)

Publication Number Publication Date
GB1434794A true GB1434794A (en) 1976-05-05

Family

ID=22947557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1938673A Expired GB1434794A (en) 1972-05-04 1973-04-24 Acoustic energy transmission device

Country Status (8)

Country Link
US (1) US3777189A (en)
BR (1) BR7303197D0 (en)
CA (1) CA977865A (en)
DE (1) DE2321989A1 (en)
ES (1) ES414351A1 (en)
FR (1) FR2183500A5 (en)
GB (1) GB1434794A (en)
IT (1) IT998104B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2847871A1 (en) * 1978-06-13 1980-01-03 Nippon Electronics Ltd CABLES FOR TRANSMITTING ULTRASOUND WAVES
GB2205963A (en) * 1987-06-06 1988-12-21 Brush Switchgear Measuring current
GB2221763A (en) * 1988-08-12 1990-02-14 Ass Elect Ind Current sensing

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937990A (en) * 1974-05-28 1976-02-10 Winston Ronald H Ultrasonic composite devices
US4158168A (en) * 1977-12-06 1979-06-12 Westinghouse Electric Corp. Acoustic waveguides for sensing and locating corona discharges
US4158169A (en) * 1977-12-06 1979-06-12 Westinghouse Electric Corp. Corona testing apparatus including acoustic waveguides for transmitting acoustic emissions from electrical apparatus
KR820001828B1 (en) * 1977-12-06 1982-10-12 에이. 엠. 케네디 2세 Acoustic waveguides for sensing and locating corona dischages
US4352038A (en) * 1980-02-19 1982-09-28 Moreton Neal S Acoustical transmission wave guide assembly for predicting failure of structured members
DE3775269D1 (en) * 1986-05-05 1992-01-30 Siemens Ag METHOD FOR MEASURING ELECTRICAL OR MAGNETIC ALTERNATIVE FIELDS AND ARRANGEMENT FOR IMPLEMENTING THE METHOD.
US5284148A (en) * 1989-05-16 1994-02-08 Hewlett-Packard Company Intracavity ultrasound diagnostic probe using fiber acoustic waveguides
US5400788A (en) * 1989-05-16 1995-03-28 Hewlett-Packard Apparatus that generates acoustic signals at discrete multiple frequencies and that couples acoustic signals into a cladded-core acoustic waveguide
DK0455837T3 (en) * 1990-03-09 1992-07-06 Walter Martin Ultraschalltech Device for radiating ultrasonic energy
EP0480078A1 (en) * 1990-10-08 1992-04-15 Siemens Aktiengesellschaft Measuring device with non-electrical signal- and energy transfer
KR100732831B1 (en) * 1996-05-09 2007-10-16 크레스트 울트라소닉스 코퍼레이션 Ultrasonic transducer
US6653760B1 (en) 1996-05-09 2003-11-25 Crest Ultrasonics Corporation Ultrasonic transducer using third harmonic frequency
ES2118042B1 (en) * 1996-10-03 1999-04-16 Univ Catalunya Politecnica PIEZOELECTRIC TRANSDUCER FOR MEASURING HIGH VOLTAGES AND ITS OPERATING PROCEDURE.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173034A (en) * 1960-09-16 1965-03-09 Singer Inc H R B Ultrasonic device
US3140859A (en) * 1961-01-17 1964-07-14 Internat Ultrasonics Inc Electroacoustic sandwich transducers
US3166840A (en) * 1961-06-28 1965-01-26 Aeroprojects Inc Apparatus and method for introducing high levels of vibratory energy to a work area
US3584327A (en) * 1969-04-04 1971-06-15 Fibra Sonics Ultrasonic transmission system
US3546498A (en) * 1969-06-13 1970-12-08 Univ Ohio Curved sonic transmission line
US3591862A (en) * 1970-01-12 1971-07-06 Ultrasonic Systems Ultrasonic motor transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2847871A1 (en) * 1978-06-13 1980-01-03 Nippon Electronics Ltd CABLES FOR TRANSMITTING ULTRASOUND WAVES
GB2205963A (en) * 1987-06-06 1988-12-21 Brush Switchgear Measuring current
GB2221763A (en) * 1988-08-12 1990-02-14 Ass Elect Ind Current sensing

Also Published As

Publication number Publication date
DE2321989A1 (en) 1973-11-15
CA977865A (en) 1975-11-11
ES414351A1 (en) 1976-02-01
BR7303197D0 (en) 1974-07-11
US3777189A (en) 1973-12-04
IT998104B (en) 1976-01-20
FR2183500A5 (en) 1973-12-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee