Fire retarding division penetrating member
First Claim
Patent Images
1. A fire retarding division penetrating member, comprising:
- an elastic metal sheet curved to a C-letter shape, the metal sheet having ends;
coupling means with coupling portions formed adjacent to both ends of said elastic metal sheet; and
a thermal expansion material fitted to an inside of said elastic metal sheet, said thermal expansion material including a first portion positioned at a first axial end of said C-letter shape and a second portion positioned at a second axial end of said C-letter shape, said first and second portions being spaced from each other.
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Abstract
An elastic metal sheet member with thermal expansion material being lined on its internal face is curved to a C-letter shape. A claw is formed downward to a opening side tip, and a engaging mouth is formed to the opposite opening side tip. In this structure, the penetrating member can be fitted to the piping "A" or can be detached from it only by pressing the elastic metal sheet for its contraction in diameter with one hand.
76 Citations
8 Claims
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1. A fire retarding division penetrating member, comprising:
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an elastic metal sheet curved to a C-letter shape, the metal sheet having ends; coupling means with coupling portions formed adjacent to both ends of said elastic metal sheet; and a thermal expansion material fitted to an inside of said elastic metal sheet, said thermal expansion material including a first portion positioned at a first axial end of said C-letter shape and a second portion positioned at a second axial end of said C-letter shape, said first and second portions being spaced from each other. - View Dependent Claims (2)
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3. A fire retarding division penetrating member formed by the steps of comprising:
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curving an elastic metal sheet to a C-letter shape, the metal sheet having ends; forming coupling means with coupling portions adjacent to both ends of said elastic metal sheet; and fitting a thermal expansion material to an inside of said elastic metal, sheet, said thermal expansion material including a first portion positioned at a first axial end of said C-letter shape and a second portion positioned at a second axial end of said C-letter shape, said first and second portions being spaced from each other. - View Dependent Claims (4, 5)
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6. A process for creating a fire retarding division around a pipe in a wall, the process comprising the steps of:
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providing an elastic metal sheet curved to a C-letter shape, the metal sheet having ends and having a thermal expansion material fitted to an inside of said elastic metal sheet; providing coupling means with coupling portions formed adjacent to both ends of said elastic metal sheet; fitting said C-letter shape to the pipe by pressing the pipe through an opening of said C-shape; engaging the coupling means; placing said C-letter shape in the wall. - View Dependent Claims (7, 8)
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Specification