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US 4,999,168 AGranted
Crack resistant intumescent sheet material
AssigneeThe Carborundum Company
InventorJohn D. Ten Eyck
Life of this patent
Estimating the term…
Abstract
A handleable, flexible, crack resistant intumescent sheet material for use in mounting fragile structures comprising a preformed intumescent layer, and a reinforcing layer bonded to the intumescent layer and having a tensile strength greater that the intumescent layer.
Claims11
A preformed, handleable, flexible crack resistant intumescent sheet material for use in mounting fragile structures comprising:
- (A) a preformed intumescent layer, and
- (B) a reinforcing layer selected from the group consisting of kraft paper, plastic film and inorganic fiber fabric, bonded to said intumescent layer by an adhesive which is flexible and has a bond strength greater than the shear forces from bending said material, and having a tensile strength greater than said intumescent layer.
Device for treatment of exhaust gases from an internal combustion engine comprising:
- (A) a housing having an inlet at one end and an outlet at an opposite end through which exhaust gases flow;
- (B) a frangible ceramic monolith resiliently mounted within said housing, said monolith having an outer surface and an inlet end face at said one end in communication with said inlet of said housing and an outlet end face at said opposite end in communication with said outlet of said housing;
- and
- (C) an intumescent sheet material, in contact with and covering at least a portion of said outer surface of said monolith, comprising:
- (a) an intumescent layer adjacent to and bonded to a ceramic fiber layer, and
- (b) a reinforcing layer selected from the group consisting of kraft paper, plastic film and inorganic fiber fabric bonded to said intumescent layer by an adhesive which is flexible and has a bond strength greater than the shear forces from bending said material and having a tensile strength greater than that of said intumescent layer.
3 more elements
A catalytic converter for purifying exhaust gases of an internal combustion engine comprising:
- (A) a hollow metallic housing having an inner surface and inlet at one end and an outlet at an other end;
- (B) a frangible gas-pervious ceramic monolith catalyst element resiliently mounted within said housing, said catalyst element having an inlet end face in communication with said inlet of said housing and an outlet end face in communication with said outlet of said housing;
- and
- (C) means thermally insulating and resiliently mounting said catalyst element in spaced relationship from said housing comprising:
- (a) at least one layer of intumescent sheet material covering a ceramic fiber layer, and
- (b) a reinforcing layer selected from the group consisting of kraft paper, plastic film and inorganic fiber fabric bonded to said intumescent layer by an adhesive which is flexible and has a bond strength greater than the shear forces from bending said material and having a tensile strength greater than that of said intumescent layer.
3 more elements
Dependencies are inferred from the claim text.