IT962067B - Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico - Google Patents

Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico

Info

Publication number
IT962067B
IT962067B IT4151772A IT4151772A IT962067B IT 962067 B IT962067 B IT 962067B IT 4151772 A IT4151772 A IT 4151772A IT 4151772 A IT4151772 A IT 4151772A IT 962067 B IT962067 B IT 962067B
Authority
IT
Italy
Prior art keywords
pluritonal
constituing
pneumatic
single block
electric horn
Prior art date
Application number
IT4151772A
Other languages
English (en)
Italian (it)
Original Assignee
Frigo D
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 Frigo D filed Critical Frigo D
Priority to IT4151772A priority Critical patent/IT962067B/it
Priority to BR79473A priority patent/BR7300794D0/pt
Priority to FR7303831A priority patent/FR2170774A5/fr
Application granted granted Critical
Publication of IT962067B publication Critical patent/IT962067B/it

Links

Classifications

    • 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
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
IT4151772A 1972-02-03 1972-02-03 Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico IT962067B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT4151772A IT962067B (it) 1972-02-03 1972-02-03 Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico
BR79473A BR7300794D0 (pt) 1972-02-03 1973-02-01 Busina acustica pneumatica ou eletrica bi ou pluritonal com cornetas acopladas constituin do um bloco unico
FR7303831A FR2170774A5 (Direct) 1972-02-03 1973-02-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT4151772A IT962067B (it) 1972-02-03 1972-02-03 Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico

Publications (1)

Publication Number Publication Date
IT962067B true IT962067B (it) 1973-12-20

Family

ID=11250506

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4151772A IT962067B (it) 1972-02-03 1972-02-03 Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico

Country Status (3)

Country Link
BR (1) BR7300794D0 (Direct)
FR (1) FR2170774A5 (Direct)
IT (1) IT962067B (Direct)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007703A (en) * 1976-02-27 1977-02-15 F.I.A.M.M. Fabbrica Italiana Accumulatori Motocarri Montecchio S.P.A. Two-tone sound generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29702196U1 (de) * 1997-02-10 1998-06-04 Robert Bosch Gmbh, 70469 Stuttgart Elektromagnetisches Signalhorn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007703A (en) * 1976-02-27 1977-02-15 F.I.A.M.M. Fabbrica Italiana Accumulatori Motocarri Montecchio S.P.A. Two-tone sound generator

Also Published As

Publication number Publication date
BR7300794D0 (pt) 1973-10-09
FR2170774A5 (Direct) 1973-09-14

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