EP0364236A2 - Procédé pour lever et abaisser d'un rideau de sécurité - Google Patents

Procédé pour lever et abaisser d'un rideau de sécurité Download PDF

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Publication number
EP0364236A2
EP0364236A2 EP89310388A EP89310388A EP0364236A2 EP 0364236 A2 EP0364236 A2 EP 0364236A2 EP 89310388 A EP89310388 A EP 89310388A EP 89310388 A EP89310388 A EP 89310388A EP 0364236 A2 EP0364236 A2 EP 0364236A2
Authority
EP
European Patent Office
Prior art keywords
ceiling
curtain
arrangement according
arrangement
piston
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.)
Withdrawn
Application number
EP89310388A
Other languages
German (de)
English (en)
Other versions
EP0364236A3 (fr
Inventor
Harry George Humm
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0364236A2 publication Critical patent/EP0364236A2/fr
Publication of EP0364236A3 publication Critical patent/EP0364236A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/10—Fire-proof curtains
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers

Definitions

  • This invention relates to safety curtain arrangements, particularly, but not exclusively, to fire and smoke curtains.
  • Such arrangements conventionally comprise rolled up curtains which are unrolled to operative position.
  • There may be automatic arrangements for unrolling the curtains upon the detection of fire or smoke, and these may allow the curtain to be unrolled by the force of gravity, the bottom of the curtain being weighted.
  • roller mechanism is in any event complicated and costly and aesthetically not very pleasing, presenting a bulky appendage extending across a ceiling which may spoil the lines the architect designed. Moreover, even with a heavy weight, deployment, involving unrolling, is not exactly instantaneous.
  • the present invention provides an improved safety curtain arrangement.
  • the invention comprises a safety curtain arrangement comprising a flap-like member mounted to a ceiling and extending thereacross from wall to wall deployable between a stowed position in which it lies flush against the ceiling and an operative position in which it depends from the ceiling to form a barrier extending between the walls and the ceiling.
  • the member in its operative condition may have ground clearance to provide an escape route across the barrier - this is usual in the case of smoke curtains, which remain effective so long as the upper part of the corridor, for example, is sealed.
  • the member may be hinged to the ceiling, or it may be arranged on running gear so that one end can deploy vertically downwardly while the other end runs along the ceiling into the operative position. This could reduce the need to keep wall areas clear of projections such as pictures, light switches, fire extinguishers and so on which would impede the downward motion of the flap member.
  • the curtain may be held in its stowed position by lifting gear, which can be used to restore it to its stowed position from its deployed position.
  • the lifting gear may comprise a piston-in-­cylinder arrangement, which may hold the curtain in its stowed position under pressure and release it to its deployed position on release of pressure.
  • the piston-­in-cylinder arrangement may be pivoted at one end to the curtain and at the other end to the ceiling and arranged so that pressure causes contraction in length of the piston-in-cylinder arrangement so as to lift the curtain to its deployed position against the ceiling.
  • the lifting gear may however comprise a cable drum driven by a motor, which may be an air motor which, on release of air pressure, frees the drum to release the curtain to its deployed position.
  • a motor which may be an air motor which, on release of air pressure, frees the drum to release the curtain to its deployed position.
  • the stowed curtain may conceal a smoke ventilator, which may become operative when the curtain deploys to its operative position, simply, even, as by the flap member uncovering the ventilator. If the curtain arrangement is in an intermediate floor level, the smoke ventilator could be ducted through the floor above.
  • the drawings illustrate safety curtain arrangements comprising a flap-like member 11 mounted to a ceiling 12 and extending thereacross from wall to wall (full lines) in which it is flush against the ceiling and an operative position (dashed lines) in which it depends from the ceiling 12 to form a barrier extending between the walls and the ceiling.
  • the member 11 in each case is shown as having ground clearance "C" to provide an escape route across the barrier.
  • Figure 1 illustrates an arrangement in which the member 11 is hinged (at 13) to the ceiling 12.
  • Figure 2 illustrates an arrangement in which the member 11 is arranged on running gear 14 so that one end 11a can deploy vertically downwardly while the other end 11b runs along the gear 14 on the ceiling 12 into the operative position.
  • the arrangements can be operated by gravity, a detent 16 being withdrawn automatically upon detection of fire or smoke or other hazard condition as by a smoke detector 17.
  • FIGS 3 and 4 illustrate arrangements in which the curtain is held in its stowed position by lifting gear 31 which can be used to restore the curtain to its stowed position from its deployed position.
  • Figure 3 illustrates lifting gear 31 comprising a piston-in-cylinder arrangement 32 which holds the flap-like member 11 in its stowed position under pressure and releases it to its deployed position (under gravity) on release of pressure.
  • the piston-in-cylinder arrangement 31 is pivoted at one end 31a to the member 11 and at the other end 31b to the ceiling and arranged so that pressure causes the piston to retract into the cylinder so as to lift the member 11.
  • Figure 4 illustrates lifting gear 31 comprising a cable drum 41 driven by an air motor 42 arranged, so long as pressure is on, to act as a brake to hold the cable drum 41 stationary but on release of pressure to release the drum to allow the member 11 to drop under gravity.
  • the cable 43 may of course be of rope, wire chain, or any other suitable means.
  • the stowed curtain can conceal a smoke ventilator 15 in each case.
  • the arrangements illustrated are capable of rapid installation and of inexpensive construction, with little or nothing to go wrong or require maintenance. They can be recessed into the ceiling so as to be particularly unobtrusive.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Building Environments (AREA)
EP89310388A 1988-10-13 1989-10-11 Procédé pour lever et abaisser d'un rideau de sécurité Withdrawn EP0364236A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888823984A GB8823984D0 (en) 1988-10-13 1988-10-13 Safety curtain arrangement
GB8823984 1988-10-13

Publications (2)

Publication Number Publication Date
EP0364236A2 true EP0364236A2 (fr) 1990-04-18
EP0364236A3 EP0364236A3 (fr) 1990-08-29

Family

ID=10645121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89310388A Withdrawn EP0364236A3 (fr) 1988-10-13 1989-10-11 Procédé pour lever et abaisser d'un rideau de sécurité

Country Status (2)

Country Link
EP (1) EP0364236A3 (fr)
GB (1) GB8823984D0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557522A1 (fr) * 2004-01-21 2005-07-27 Martin Reuter Porte de sécurité
KR20240172321A (ko) * 2023-05-30 2024-12-10 주식회사 자연환경기술 질식소화포를 이용한 챔버의 화재진압장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449432A (en) * 1974-01-28 1976-09-15 Isobe M Equipment for preventing the spread of a fire
US4067377A (en) * 1974-11-15 1978-01-10 Anemostat Products Division, Dynamics Corporation Of America Air control damper
FR2481123A1 (fr) * 1980-04-28 1981-10-30 Coulomb Henri Perfectionnements aux portes coupe-feu de securite
GB2112282B (en) * 1981-11-06 1985-07-31 K G Smoke Dispersal Limited Improvements in or relating to fire-safety systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557522A1 (fr) * 2004-01-21 2005-07-27 Martin Reuter Porte de sécurité
KR20240172321A (ko) * 2023-05-30 2024-12-10 주식회사 자연환경기술 질식소화포를 이용한 챔버의 화재진압장치

Also Published As

Publication number Publication date
EP0364236A3 (fr) 1990-08-29
GB8823984D0 (en) 1988-11-23

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