A - Human Necessities – 62 – C
Patent
A - Human Necessities
62
C
A62C 2/18 (2006.01)
Patent
CA 2507604
A damper assembly is provided having at least one damper blade that operates in a normally open position. A fusible link is connected to the damper blade to maintain the damper blade in the open position against a biasing force tending to close the damper blade. The fusible link fails upon an occurrence of a predetermined condition. A damper mechanism is provided including a locking mechanism linked to the damper blade that resists opening of the damper blade when the blade has closed due to failure of the fusible link.
L'invention concerne un volet comprenant au moins une lame utilisée dans une position normalement ouverte. Un maillon fusible est connecté à la lame du volet afin de maintenir celle-ci en position ouverte contre une force de polarisation tendant à fermer la lame du volet. Le maillon fusible ne fonctionne plus lorsque se produit une condition prédéterminée. Un mécanisme d'obturation comprend un mécanisme de verrouillage relié à la lame du volet et résistant à l'ouverture de la lame lorsque celle-ci se ferme en raison d'une défaillance du maillon fusible.
Heil Eugene J.
Horvat Terrance
Bcf Llp
Greenheck Fan Corporation
LandOfFree
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