Fire safety damper units
First Claim
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1. A FIRE SAFETY DAMPER COMPRISING A HOLLOW DAMPER HOUSING, A PAIR OF PIVOTABLE VANE ELEMENTS PIVOTALLY MOUNTED IN SAID HOUSING, SAID VANE ELEMENTS ADAPTED TO SUBSTANTIALLY COMPLETELY CLOSE OFF SAID HOUSING TO GAS FLOW WHEN THE ELEMENTS ARE IN THE CLOSED POSITION, MEANS FOR HOLDING THE ELEMENTS IN AN OPEN POSITION COMPRISING A FUSIBLE LINK CONNECTED TO THE RESPECTIVE VANE ELEMENTS WHEN THEY ARE IN THE OPEN POSITION, AND BIAS MEANS CONNECTING SAID VANE ELEMENTS AND ADAPTED TO SNAP SAID VANE
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1 Claim
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1. A FIRE SAFETY DAMPER COMPRISING A HOLLOW DAMPER HOUSING, A PAIR OF PIVOTABLE VANE ELEMENTS PIVOTALLY MOUNTED IN SAID HOUSING, SAID VANE ELEMENTS ADAPTED TO SUBSTANTIALLY COMPLETELY CLOSE OFF SAID HOUSING TO GAS FLOW WHEN THE ELEMENTS ARE IN THE CLOSED POSITION, MEANS FOR HOLDING THE ELEMENTS IN AN OPEN POSITION COMPRISING A FUSIBLE LINK CONNECTED TO THE RESPECTIVE VANE ELEMENTS WHEN THEY ARE IN THE OPEN POSITION, AND BIAS MEANS CONNECTING SAID VANE ELEMENTS AND ADAPTED TO SNAP SAID VANE
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Current AssigneeEugene F. Averill
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Original AssigneeEugene F. Averill
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InventorsAverill, Eugene F.
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Application NumberUS04/099,227Time in Patent Office678 DaysField of SearchUS Class Current137/74CPC Class CodesA62C 2/14 with two or more bladesF16K 17/383 the valve comprising fusibl...Y10T 137/1812 In fluid flow path
