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US 2006/0065304 A1Published application
Fire collar
AssigneeIg6 Pty Ltd
InventorJames Truss
Life of this patent
Estimating the term…
Abstract
A fire collar or fire damper for location within a concrete slab of a building. The device incorporates a damper arrangement (12) and a heat detector (18, 19) comprising a metal alloy or lead which melts when a present temperature is reached, causing the damper arrangement to seal off associated pipework or ducting.
Claims47
1-10. (canceled)
A fire damper including:
- a housing having an inlet adapted to connect to an inlet conduit and an outlet adapted to connect to an outlet conduit;
- a damping member in said housing adapted to move from an open position in which the damping member allows fluid to flow from said inlet to said outlet to a closed position in which said damping member inhibits flow from said inlet to said outlet, said damping member having a passage therethrough with a passage inlet and a passage outlet, said passage inlet and said passage outlet being adapted to align with the inlet and outlet of said housing respectively when said damping member is in the open position and said damping member including an intumescent material.
A fire damper including:
- a housing having an inlet adapted to connect to an inlet conduit and an outlet adapted to connect to an outlet conduit;
- a damping member in said housing adapted to move from an open position in which the damping member allows fluid to flow from said inlet to said outlet to a closed position in which said damping member inhibits flow from said inlet to said outlet;
- biasing means for biasing said damping member towards the closed position;
- retaining means for retaining said damping member in the open position, and at least a portion of said retaining means being located in said housing and being adapted to yield upon fluid in said housing reaching a predetermined temperature so as to release said damping member.
1 more element
A fire damper including:
- a housing having an inlet adapted to connect to an inlet conduit and an outlet adapted to connect to an outlet conduit;
- a damping member having a flow passage therethrough defined at least in part by first and second spaced apart opposed wall portions, said damping member being mounted in said housing for at least partial rotation from an open position in which said flow passage aligns with said inlet and said outlet to a closed position in which said first wall portion closes said inlet and said second wall portion closes said outlet;
- biasing means operatively connected to said housing for biasing said damping member towards the closed position;
- retaining means for retaining said damping member in the open position, said retaining means being adapted to release said damping member in response to heat;
- and
- a quantity of intumescent material in said housing and adapted to form a seal between said damping member and said housing upon expansion when said damping member is in the closed position.
3 more elements
Dependencies are inferred from the claim text.