PT84374A - Haut-parleur dynamique pour des alarmes - Google Patents

Haut-parleur dynamique pour des alarmes

Info

Publication number
PT84374A
PT84374A PT84374A PT8437487A PT84374A PT 84374 A PT84374 A PT 84374A PT 84374 A PT84374 A PT 84374A PT 8437487 A PT8437487 A PT 8437487A PT 84374 A PT84374 A PT 84374A
Authority
PT
Portugal
Prior art keywords
alarms
dynamic speaker
speaker
dynamic
Prior art date
Application number
PT84374A
Other languages
English (en)
Portuguese (pt)
Other versions
PT84374B (pt
Inventor
Pedro Altimira Villalonga
Original Assignee
Plastmetal Sa
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 Plastmetal Sa filed Critical Plastmetal Sa
Publication of PT84374A publication Critical patent/PT84374A/fr
Publication of PT84374B publication Critical patent/PT84374B/pt

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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
PT84374A 1986-03-05 1987-02-26 Altifalante dinamico para alarme PT84374B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1986292736U ES292736Y (es) 1986-03-05 1986-03-05 Altavoz dinamico para alarmas perfeccionado

Publications (2)

Publication Number Publication Date
PT84374A true PT84374A (fr) 1987-03-01
PT84374B PT84374B (pt) 1989-10-04

Family

ID=8440109

Family Applications (1)

Application Number Title Priority Date Filing Date
PT84374A PT84374B (pt) 1986-03-05 1987-02-26 Altifalante dinamico para alarme

Country Status (4)

Country Link
ES (1) ES292736Y (fr)
FR (1) FR2595497B1 (fr)
GB (1) GB2187608A (fr)
PT (1) PT84374B (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR724999A (fr) * 1931-01-12 1932-05-06 Aeg Perfectionnements aux appareils d'enregistrement ou de reproduction du son, entraînés de préférence de façon électrodynamique
GB384485A (en) * 1932-02-20 1932-12-08 Leonard Walter Murkham Improvements in or relating to sound reproducing devices of the electro-dynamic or mo
US2469773A (en) * 1934-06-04 1949-05-10 Jensen Mfg Company Loud-speaker diaphragm support member
GB465795A (en) * 1935-11-08 1937-05-10 Cinaudagraph Corp Improvements in electro-acoustical reproducers
GB494726A (en) * 1937-04-28 1938-10-28 British Thomson Houston Co Ltd Acoustic diaphragm
GB494729A (en) * 1937-04-29 1938-10-31 Ernest Frank Sewell Apparatus for simultaneous and independent front and rear wheel steering for vehicles
BE479149A (fr) * 1943-01-07
JPS5634297A (en) * 1979-08-29 1981-04-06 Kenzo Inoue Speaker unit
GB2070390B (en) * 1980-02-21 1985-08-07 Rank Organisation Ltd Loudspeaker diaphragm
US4336425A (en) * 1980-05-06 1982-06-22 Renkus-Heinz, Inc. High frequency compression driver and method of manufacture thereof
GB8603645D0 (en) * 1986-02-14 1986-03-19 Celestion Int Ltd Loudspeakers

Also Published As

Publication number Publication date
FR2595497A1 (fr) 1987-09-11
GB2187608A (en) 1987-09-09
ES292736U (es) 1986-06-16
FR2595497B1 (fr) 1992-09-04
PT84374B (pt) 1989-10-04
GB8702673D0 (en) 1987-03-11
ES292736Y (es) 1987-03-01

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Legal Events

Date Code Title Description
MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19960930