FR1418426A - Non-return flap device for ventilation duct - Google Patents

Non-return flap device for ventilation duct

Info

Publication number
FR1418426A
FR1418426A FR996361A FR996361A FR1418426A FR 1418426 A FR1418426 A FR 1418426A FR 996361 A FR996361 A FR 996361A FR 996361 A FR996361 A FR 996361A FR 1418426 A FR1418426 A FR 1418426A
Authority
FR
France
Prior art keywords
ventilation duct
flap device
return flap
return
ventilation
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
FR996361A
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.)
Colt Ventilation and Heating Ltd
Original Assignee
Colt Ventilation and Heating Ltd
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 Colt Ventilation and Heating Ltd filed Critical Colt Ventilation and Heating Ltd
Priority to FR996361A priority Critical patent/FR1418426A/en
Application granted granted Critical
Publication of FR1418426A publication Critical patent/FR1418426A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/142—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using pivoting blades with intersecting axles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR996361A 1964-11-26 1964-11-26 Non-return flap device for ventilation duct Expired FR1418426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR996361A FR1418426A (en) 1964-11-26 1964-11-26 Non-return flap device for ventilation duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR996361A FR1418426A (en) 1964-11-26 1964-11-26 Non-return flap device for ventilation duct

Publications (1)

Publication Number Publication Date
FR1418426A true FR1418426A (en) 1965-11-19

Family

ID=8843401

Family Applications (1)

Application Number Title Priority Date Filing Date
FR996361A Expired FR1418426A (en) 1964-11-26 1964-11-26 Non-return flap device for ventilation duct

Country Status (1)

Country Link
FR (1) FR1418426A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614369A1 (en) * 1987-04-23 1988-10-28 Tagnon Luc Variable-pitch stator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614369A1 (en) * 1987-04-23 1988-10-28 Tagnon Luc Variable-pitch stator

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