Tiered firestop assembly
First Claim
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1. A firestop assembly for surrounding a pipe having a longitudinal axis, said firestop assembly comprising:
- a) a first intumescent firestop ring adapted to extend for a first distance along the longitudinal axis;
b) a second intumescent firestop ring overlying said first intumescent firestop ring, said second firestop ring adapted to extend for a second distance along the longitudinal axis, wherein said second distance is not equal to said first distance;
c) heat transfer means interposed between said first intumescent firestop ring and said second intumescent firestop ring; and
d) means for securing said first and second intumescent firestop rings to a pipe.
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Abstract
The invention relates to a firestop assembly for a pipe, comprising first and second intumescent firestop rings. The first intumescent firestop ring overlies the pipe, and extends along the pipe for a first distance, and the second intumescent firestop ring overlies the first intumescent firestop ring and extends along the pipe for a second distance. The first distance is not equal to the second distance, and the firestop assembly so provided is particularly adapted for firestopping a plastic pipe.
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Citations
24 Claims
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1. A firestop assembly for surrounding a pipe having a longitudinal axis, said firestop assembly comprising:
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a) a first intumescent firestop ring adapted to extend for a first distance along the longitudinal axis; b) a second intumescent firestop ring overlying said first intumescent firestop ring, said second firestop ring adapted to extend for a second distance along the longitudinal axis, wherein said second distance is not equal to said first distance; c) heat transfer means interposed between said first intumescent firestop ring and said second intumescent firestop ring; and d) means for securing said first and second intumescent firestop rings to a pipe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A firestop assembly for surrounding a plastic pipe having a longitudinal axis, said firestop assembly comprising:
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a) a first intumescent firestop ring adapted to extend for a first distance along the longitudinal axis, said first intumescent firestop ring comprising at least one layer of an intumescent mat; b) a second intumescent firestop ring overlying said first intumescent firestop ring, said second intumescent firestop ring comprising at least one layer of an intumescent mat and adapted to extend for a second distance along the longitudinal axis, wherein said second distance is not equal to said first distance; c) heat transfer means interposed between said first intumescent firestop ring and said second intumescent firestop ring; and d) band clamp means for securing said first and second intumescent firestop rings to a pipe. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of applying a firestop assembly to a pipe having a longitudinal axis and an outer peripheral surface, comprising:
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a) wrapping the outer peripheral surface of the pipe with a first intumescent firestop ring extending for a first distance along the longitudinal axis of the pipe; b) wrapping a second intumescent firestop ring over the first intumescent firestop ring and around the pipe, the second firestop ring extending for a second distance along the longitudinal axis of the pipe, wherein the second distance is not equal to the first distance; c) providing heat transfer means interposed between the first intumescent firestop ring and the second intumescent firestop ring; and d) securing the first and second intumescent firestop rings to the pipe. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification