GB8924434D0 - Acoustic elements - Google Patents

Acoustic elements

Info

Publication number: GB8924434D0
Authority: GB; United Kingdom
Prior art keywords: acoustic elements; acoustic; elements
Prior art date: 1989-10-31
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.): Ceased

Application number

GBGB8924434.7A

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.)

EMI Group Electronics Ltd

Original Assignee

Thorn EMI Electronics Ltd

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.)

1989-10-31

Filing date

1989-10-31

Publication date

2003-09-10

1989-10-31 Application filed by Thorn EMI Electronics Ltd filed Critical Thorn EMI Electronics Ltd

1989-10-31 Priority to GBGB8924434.7A priority Critical patent/GB8924434D0/en

1990-10-31 Priority to FR9013534A priority patent/FR2855009A1/en

2003-09-10 Publication of GB8924434D0 publication Critical patent/GB8924434D0/en

Status Ceased legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
- B06B1/0633—Cylindrical array
- 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
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/121—Flextensional transducers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Mechanical Engineering (AREA)
Multimedia (AREA)
Transducers For Ultrasonic Waves (AREA)

GBGB8924434.7A 1989-10-31 1989-10-31 Acoustic elements Ceased GB8924434D0 (en)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
GBGB8924434.7A GB8924434D0 (en)	1989-10-31	1989-10-31	Acoustic elements
FR9013534A FR2855009A1 (en)	1989-10-31	1990-10-31	Towed floating hydrophone acoustic element having piezo electric polymer leaf buried following pull axis with pull axis along tubular length

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GBGB8924434.7A GB8924434D0 (en)	1989-10-31	1989-10-31	Acoustic elements

Publications (1)

Publication Number	Publication Date
GB8924434D0 true GB8924434D0 (en)	2003-09-10

Family

ID=27840031

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GBGB8924434.7A Ceased GB8924434D0 (en)	1989-10-31	1989-10-31	Acoustic elements

Country Status (2)

Country	Link
FR (1)	FR2855009A1 (en)
GB (1)	GB8924434D0 (en)

1989
- 1989-10-31 GB GBGB8924434.7A patent/GB8924434D0/en not_active Ceased
1990
- 1990-10-31 FR FR9013534A patent/FR2855009A1/en not_active Withdrawn

Also Published As

Publication number	Publication date
FR2855009A1 (en)	2004-11-19

Publication	Publication Date	Title
GB8923219D0 (en)	1989-11-29	Acoustic telemetry
AU108277S (en)	1990-07-16	Hedge-shears
AU110744S (en)	1991-04-15	Transducer
CS490790A3 (en)	1992-02-19	Chaff-cutter
GB2215049B (en)	1991-08-21	Acoustic devices
GB8823732D0 (en)	1988-11-16	Acoustic screen
BG49771A1 (en)	1992-02-14	Electric- bow evaparator
GB2238420B (en)	1994-06-01	Acoustic device
GB8822490D0 (en)	1988-10-26	Transducers
GB8924434D0 (en)	2003-09-10	Acoustic elements
GB8916795D0 (en)	2013-09-04	Compsite transducer
PL280652A1 (en)	1990-01-08	Transducer
GB8914228D0 (en)	1989-08-09	Microphones
CA64463S (en)	1989-10-03	Tapeplayer
CA64817S (en)	1989-11-21	Liminaire
CA64838S (en)	1989-11-28	Automibile
PL281443A1 (en)	1991-03-25	Acoustic screen
GB9102831D0 (en)	1991-04-10	Sewing-up aid
IL89080A (en)	1993-01-14	Hitch-hiking aid
GB8925430D0 (en)	1989-12-28	Sewing-up aid
AU107366S (en)	1990-04-17	Loudspeaker
AU107365S (en)	1990-04-17	Loudspeaker
GB8805714D0 (en)	1988-04-07	Acoustic devices
AU106812S (en)	1990-02-13	Gamesboard
AU111886S (en)	1991-08-16	gamesboard

Legal Events

Date	Code	Title	Description
2003-10-01	AT	Applications terminated before publication under section 16(1)