GB2134745B - Electro acoustic tranducer - Google Patents

Electro acoustic tranducer

Info

Publication number: GB2134745B
Authority: GB; United Kingdom
Prior art keywords: electro acoustic; tranducer; acoustic tranducer; electro; acoustic
Prior art date: 1983-02-04
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

GB08303131A

Other versions

GB8303131D0 (en

GB2134745A (en

Inventor

Frank Taylor

Norman William Tester

Malcolm Roger King

Trevor Burton

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.)

STC PLC

Original Assignee

Standard Telephone and Cables PLC

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.)

1983-02-04

Filing date

1983-02-04

Publication date

1986-10-22

1983-02-04 Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC

1983-02-04 Priority to GB08303131A priority Critical patent/GB2134745B/en

1983-03-09 Publication of GB8303131D0 publication Critical patent/GB8303131D0/en

1984-01-20 Priority to NZ20689984A priority patent/NZ206899A/en

1984-01-25 Priority to IE16284A priority patent/IE55102B1/en

1984-02-01 Priority to AU23942/84A priority patent/AU569275B2/en

1984-08-15 Publication of GB2134745A publication Critical patent/GB2134745A/en

1986-10-22 Application granted granted Critical

1986-10-22 Publication of GB2134745B publication Critical patent/GB2134745B/en

1987-05-04 Priority to SG40087A priority patent/SG40087G/en

1987-10-15 Priority to HK76187A priority patent/HK76187A/en

Status Expired 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for telephonic receivers

Landscapes

Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

GB08303131A 1983-02-04 1983-02-04 Electro acoustic tranducer Expired GB2134745B (en)

Priority Applications (6)

Application Number	Priority Date	Filing Date	Title
GB08303131A GB2134745B (en)	1983-02-04	1983-02-04	Electro acoustic tranducer
NZ20689984A NZ206899A (en)	1983-02-04	1984-01-20	Electro-acoustic transducer
IE16284A IE55102B1 (en)	1983-02-04	1984-01-25	Electro-acoustic transducer
AU23942/84A AU569275B2 (en)	1983-02-04	1984-02-01	Electro acoustic transducer
SG40087A SG40087G (en)	1983-02-04	1987-05-04	Electro-acoustic transducer
HK76187A HK76187A (en)	1983-02-04	1987-10-15	Electro-acoustic transducer

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB08303131A GB2134745B (en)	1983-02-04	1983-02-04	Electro acoustic tranducer

Publications (3)

Publication Number	Publication Date
GB8303131D0 GB8303131D0 (en)	1983-03-09
GB2134745A GB2134745A (en)	1984-08-15
GB2134745B true GB2134745B (en)	1986-10-22

Family

ID=10537478

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08303131A Expired GB2134745B (en)	1983-02-04	1983-02-04	Electro acoustic tranducer

Country Status (6)

Country	Link
AU (1)	AU569275B2 (en)
GB (1)	GB2134745B (en)
HK (1)	HK76187A (en)
IE (1)	IE55102B1 (en)
NZ (1)	NZ206899A (en)
SG (1)	SG40087G (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3700594A1 (en) *	1986-01-16	1987-07-23	Akg Akustische Kino Geraete	PRESSURE GRADIENT RECEIVER
GB8727072D0 (en) *	1987-11-19	1987-12-23	British Telecomm	Moisture barrier assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB388069A (en) *	1929-05-15	1933-02-20	Electrical Res Prod Inc	Improvements in electrodynamic devices for use in receiving or transmitting sound
GB409368A (en) *	1932-04-12	1934-04-30	Electrical Res Prod Inc	Improvements in or relating to acoustic devices of the electrodynamic type
DE1512682C3 (en) *	1966-02-14	1974-11-21	Elektroakusztikai Gyar, Budapest	Dynamic microphone with measures for frequency response correction
GB1350122A (en) *	1970-10-29	1974-04-18	Electronic Res Ass	Sound reproducing equipment
NL7105001A (en) *	1971-04-14	1972-10-17
US3940575A (en) *	1975-03-03	1976-02-24	Cbs Inc.	Directional microphone
NZ197139A (en) *	1980-05-23	1985-01-31	Int Standard Electric Corp	Moving coil electrodynamic transducer construction
GB2114855B (en) *	1982-02-09	1985-10-23	Standard Telephones Cables Ltd	Moving coil transducer

1983
- 1983-02-04 GB GB08303131A patent/GB2134745B/en not_active Expired
1984
- 1984-01-20 NZ NZ20689984A patent/NZ206899A/en unknown
- 1984-01-25 IE IE16284A patent/IE55102B1/en unknown
- 1984-02-01 AU AU23942/84A patent/AU569275B2/en not_active Ceased
1987
- 1987-05-04 SG SG40087A patent/SG40087G/en unknown
- 1987-10-15 HK HK76187A patent/HK76187A/en unknown

Also Published As

Publication number	Publication date
SG40087G (en)	1987-07-24
GB8303131D0 (en)	1983-03-09
NZ206899A (en)	1987-10-30
IE840162L (en)	1984-08-04
GB2134745A (en)	1984-08-15
AU569275B2 (en)	1988-01-28
AU2394284A (en)	1984-08-09
IE55102B1 (en)	1990-05-23
HK76187A (en)	1987-10-23

Publication	Publication Date	Title
GB8327551D0 (en)	1983-11-16	Acoustic transducer
GB2138144B (en)	1986-07-16	Cardio-respiration transducer
DE3472004D1 (en)	1988-07-14	Transducers
GB8425064D0 (en)	1993-01-27	Acoustic transducer
GB2164226B (en)	1987-03-18	Electroacoustic transducer
GB8721675D0 (en)	1987-10-21	Acoustic transducer
GB8507003D0 (en)	1985-04-24	Acoustic transducers
GB8409946D0 (en)	1984-05-31	Transducers
AU549079B2 (en)	1986-01-16	Electro acoustic transducer
GB2146870B (en)	1987-05-13	Directional acoustic transducer
GB8411493D0 (en)	1984-06-13	Electro-acoustic transducer
GB8409932D0 (en)	1984-05-31	Acoustic ranging
GB2144308B (en)	1986-09-17	Electro-acoustic transducer element
GB2144600B (en)	1986-09-24	Electro acoustic transducer
GB2151025B (en)	1987-10-07	Transducer
GB2134745B (en)	1986-10-22	Electro acoustic tranducer
GB2191909B (en)	1989-12-20	Acoustic transducer
GB8425213D0 (en)	1984-11-14	Electro-acoustic transducer
GB8430110D0 (en)	1985-01-09	Piezoelectric speaker
GB2074418B (en)	1983-10-19	Electro acoustic transducers
GB2190561B (en)	1989-12-20	Acoustic transducer
GB8333717D0 (en)	1984-01-25	Acoustic transducer
DE3477335D1 (en)	1989-04-20	Electrostatic sound transducer
GB8333605D0 (en)	1984-02-15	Transducers
GB2175527B (en)	1988-06-02	Acoustic transducer manufacture

Legal Events

Date	Code	Title	Description
1993-08-25	732E	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
1994-09-28	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19940204