FR627933A - Perfectionnements aux cornets acoustiques - Google Patents

Perfectionnements aux cornets acoustiques

Info

Publication number
FR627933A
FR627933A FR627933DA FR627933A FR 627933 A FR627933 A FR 627933A FR 627933D A FR627933D A FR 627933DA FR 627933 A FR627933 A FR 627933A
Authority
FR
France
Prior art keywords
acoustic horns
horns
acoustic
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.)
Expired
Application number
Other languages
English (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.)
EA Laboratories Inc
Original Assignee
EA Laboratories Inc
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 EA Laboratories Inc filed Critical EA Laboratories Inc
Application granted granted Critical
Publication of FR627933A publication Critical patent/FR627933A/fr
Expired legal-status Critical Current

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
    • 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
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G10K9/15—Self-interrupting arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR627933D 1927-01-24 1927-01-24 Perfectionnements aux cornets acoustiques Expired FR627933A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR627933T 1927-01-24

Publications (1)

Publication Number Publication Date
FR627933A true FR627933A (fr) 1927-10-15

Family

ID=8989342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR627933D Expired FR627933A (fr) 1927-01-24 1927-01-24 Perfectionnements aux cornets acoustiques

Country Status (1)

Country Link
FR (1) FR627933A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948032A (en) * 1973-10-17 1976-04-06 Palitex Project-Company G.M.B.H. Anti-friction balloon restrainer in a textile yarn processing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948032A (en) * 1973-10-17 1976-04-06 Palitex Project-Company G.M.B.H. Anti-friction balloon restrainer in a textile yarn processing machine

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