Pocket for a knitted garment panel

D - Textiles – Paper – 04 – B

Patent

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Details

D04B 1/24 (2006.01) D04B 7/30 (2006.01)

Patent

CA 2212362

Horizontally hinged covers (47) for use in ceiling/floors are provided which are highly fire resistant and which in the event of fire automatically close. The door (47) preferably utilizes a multi-layer construction comprising an intumescent lower (inner) layer (48), an intermediate structural layer and a top (outer) layer of a cementitious material. The horizontally hinged door (47) utilizes an automatic closing system in the event of fire comprising a fusible link (21) which activates a pressurized gas source (44) to close the door (47) and which pressurized gas source (44) is automatically purged when the door (47) is closed to prevent explosion of the pressurized gas source (44). The fusible link (21) also actuates (opens) a hydraulic valve (40) to allow the flow of hydraulic fluid from a pneumatic/hydraulic housing (11) which is used with a movable rod (12) to open and close the door (47).

L'invention décrit des couvercles rabattants articulés horizontalement (47) destinés à être utilisés dans des plafonds ou planchers, hautement résistants au feu et qui se ferment automatiquement en cas d'incendie. Ladite trappe (47) fait intervenir de préférence une construction multicouche comprenant une couche inférieure (interne) intumescente (48), une couche de structure intermédiaire et une couche supérieure (externe) faite d'un matériau à base de ciment. La trappe articulée horizontalement (47) fait intervenir un système de fermeture automatique en cas d'incendie comprenant une pièce fusible (21) qui actionne une source de gaz comprimé (44) pour fermer la trappe (47), laquelle source de gaz comprimé (44) est automatiquement purgée lorsque la trappe (47) est fermée pour prévenir l'explosion de ladite source (44). La pièce fusible (21) commande (ouvre) également une vanne hydraulique (40) pour permettre l'écoulement d'un fluide hydraulique d'un corps pneumatique/hydraulique (11) utilisé avec une tige mobile (12) pour ouvrir et fermer la trappe (47).

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