FR2374540B1 - - Google Patents

Info

Publication number
FR2374540B1
FR2374540B1 FR7730740A FR7730740A FR2374540B1 FR 2374540 B1 FR2374540 B1 FR 2374540B1 FR 7730740 A FR7730740 A FR 7730740A FR 7730740 A FR7730740 A FR 7730740A FR 2374540 B1 FR2374540 B1 FR 2374540B1
Authority
FR
France
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
FR7730740A
Other languages
French (fr)
Other versions
FR2374540A1 (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.)
FIAMM
Original Assignee
FIAMM
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 FIAMM filed Critical FIAMM
Publication of FR2374540A1 publication Critical patent/FR2374540A1/fr
Application granted granted Critical
Publication of FR2374540B1 publication Critical patent/FR2374540B1/fr
Granted 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
    • G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
    • G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
FR7730740A 1976-12-17 1977-10-12 Compresseur d'air electrique, rotatif, a aubes, pour avertisseur sonore Granted FR2374540A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3053876A IT1065516B (it) 1976-12-17 1976-12-17 Elettrocompressore d'aria rotativo a palette per avvisatori acustici,con due o piu'bocche di mandata dell'aria compressa per la alimentazione contemporanea ed indipendente di due o piu'trombe

Publications (2)

Publication Number Publication Date
FR2374540A1 FR2374540A1 (fr) 1978-07-13
FR2374540B1 true FR2374540B1 (en:Method) 1980-11-14

Family

ID=11229929

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730740A Granted FR2374540A1 (fr) 1976-12-17 1977-10-12 Compresseur d'air electrique, rotatif, a aubes, pour avertisseur sonore

Country Status (4)

Country Link
BR (1) BR7706940A (en:Method)
DE (1) DE2743752A1 (en:Method)
FR (1) FR2374540A1 (en:Method)
IT (1) IT1065516B (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06288372A (ja) * 1992-09-01 1994-10-11 Zexel Corp ベーン型圧縮機の吸入ポート

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1052439A (fr) * 1951-03-20 1954-01-25 Maschf Augsburg Nuernberg Ag Soufflerie rotative à compartiments tournants, dont le volume varie pendant la rotation
DE1043817B (de) * 1955-03-25 1958-11-13 Martin Willuhn Zahnradpumpe

Also Published As

Publication number Publication date
BR7706940A (pt) 1978-09-12
DE2743752A1 (de) 1978-06-22
FR2374540A1 (fr) 1978-07-13
IT1065516B (it) 1985-02-25

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Legal Events

Date Code Title Description
ST Notification of lapse