GB9518172D0 - Double accoustic deflector - Google Patents

Double accoustic deflector

Info

Publication number
GB9518172D0
GB9518172D0 GBGB9518172.3A GB9518172A GB9518172D0 GB 9518172 D0 GB9518172 D0 GB 9518172D0 GB 9518172 A GB9518172 A GB 9518172A GB 9518172 D0 GB9518172 D0 GB 9518172D0
Authority
GB
United Kingdom
Prior art keywords
accoustic
deflector
double
double accoustic
accoustic deflector
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.)
Granted
Application number
GBGB9518172.3A
Other versions
GB2305062A (en
GB2305062B (en
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.)
THOMAS DAVIES RICHARD J
Original Assignee
THOMAS DAVIES RICHARD J
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 THOMAS DAVIES RICHARD J filed Critical THOMAS DAVIES RICHARD J
Priority to GB9518172A priority Critical patent/GB2305062B/en
Publication of GB9518172D0 publication Critical patent/GB9518172D0/en
Publication of GB2305062A publication Critical patent/GB2305062A/en
Application granted granted Critical
Publication of GB2305062B publication Critical patent/GB2305062B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
GB9518172A 1995-09-06 1995-09-06 Double accoustic deflector Expired - Fee Related GB2305062B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9518172A GB2305062B (en) 1995-09-06 1995-09-06 Double accoustic deflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9518172A GB2305062B (en) 1995-09-06 1995-09-06 Double accoustic deflector

Publications (3)

Publication Number Publication Date
GB9518172D0 true GB9518172D0 (en) 1995-11-08
GB2305062A GB2305062A (en) 1997-03-26
GB2305062B GB2305062B (en) 2000-03-22

Family

ID=10780272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9518172A Expired - Fee Related GB2305062B (en) 1995-09-06 1995-09-06 Double accoustic deflector

Country Status (1)

Country Link
GB (1) GB2305062B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106875597A (en) * 2017-03-10 2017-06-20 四川赛科安全技术有限公司 A kind of outer cover structure for improving acoustooptic alarm sound decibel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB335229A (en) * 1929-03-20 1930-09-22 Gabriel Gonzalez De Andia Yrar Improvements in combined wireless receiving sets and loud speakers
US3816672A (en) * 1970-07-06 1974-06-11 K Peter Sound reproduction system
CH564296A5 (en) * 1973-08-30 1975-07-15 Widmann Gottlob Wigo & Soehne
JP2823157B2 (en) * 1986-04-01 1998-11-11 キヤノン株式会社 Audio output system
US5144670A (en) * 1987-12-09 1992-09-01 Canon Kabushiki Kaisha Sound output system
US5115882A (en) * 1989-03-29 1992-05-26 Woody D Grier Omnidirectional dispersion system for multiway loudspeakers
US5163747A (en) * 1992-03-26 1992-11-17 Cheng Wei Kwang Desk lamp stereo output device incorporated thereto

Also Published As

Publication number Publication date
GB2305062A (en) 1997-03-26
GB2305062B (en) 2000-03-22

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000622

728V Application for restoration filed (sect. 28/1977)