FR740160A - Improvements to acoustic warning devices - Google Patents

Improvements to acoustic warning devices

Info

Publication number
FR740160A
FR740160A FR740160DA FR740160A FR 740160 A FR740160 A FR 740160A FR 740160D A FR740160D A FR 740160DA FR 740160 A FR740160 A FR 740160A
Authority
FR
France
Prior art keywords
warning devices
acoustic warning
acoustic
devices
warning
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.)
Submarine Signal Co
Original Assignee
Submarine Signal Co
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 Submarine Signal Co filed Critical Submarine Signal Co
Application granted granted Critical
Publication of FR740160A publication Critical patent/FR740160A/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
    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
    • 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
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • G10K9/22—Mountings; Casings

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
FR740160D 1931-08-03 1932-07-20 Improvements to acoustic warning devices Expired FR740160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US554618A US1960258A (en) 1931-08-03 1931-08-03 Air oscillator

Publications (1)

Publication Number Publication Date
FR740160A true FR740160A (en) 1933-01-23

Family

ID=24214032

Family Applications (1)

Application Number Title Priority Date Filing Date
FR740160D Expired FR740160A (en) 1931-08-03 1932-07-20 Improvements to acoustic warning devices

Country Status (2)

Country Link
US (1) US1960258A (en)
FR (1) FR740160A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE762297C (en) * 1935-01-27 1953-08-31 Julius Pintsch K G Airborne sound transmitter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153783A (en) * 1963-06-12 1964-10-20 Tideland Specialty Company Inc Stacked horn arrangement
US3918551A (en) * 1974-10-21 1975-11-11 Rizo Patron Alfonso Speaker system
US4908601A (en) * 1987-07-27 1990-03-13 Whelen Technologies, Inc. Loud speaker with horizontal radiation pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE762297C (en) * 1935-01-27 1953-08-31 Julius Pintsch K G Airborne sound transmitter

Also Published As

Publication number Publication date
US1960258A (en) 1934-05-29

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