FR691981A - Improvements to acoustic warning devices for vehicles - Google Patents

Improvements to acoustic warning devices for vehicles

Info

Publication number
FR691981A
FR691981A FR691981DA FR691981A FR 691981 A FR691981 A FR 691981A FR 691981D A FR691981D A FR 691981DA FR 691981 A FR691981 A FR 691981A
Authority
FR
France
Prior art keywords
vehicles
warning devices
acoustic warning
acoustic
devices
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
French (fr)
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.)
Moto Meter Gauge & Equip Corp
Original Assignee
Moto Meter Gauge & Equip Corp
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 Moto Meter Gauge & Equip Corp filed Critical Moto Meter Gauge & Equip Corp
Application granted granted Critical
Publication of FR691981A publication Critical patent/FR691981A/en
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)
FR691981D 1929-03-18 1930-03-15 Improvements to acoustic warning devices for vehicles Expired FR691981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US691981XA 1929-03-18 1929-03-18

Publications (1)

Publication Number Publication Date
FR691981A true FR691981A (en) 1930-10-29

Family

ID=22087365

Family Applications (1)

Application Number Title Priority Date Filing Date
FR691981D Expired FR691981A (en) 1929-03-18 1930-03-15 Improvements to acoustic warning devices for vehicles

Country Status (1)

Country Link
FR (1) FR691981A (en)

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