Compressible gasket and flame shield
OwnerWilliam John Luerman, Dorothy Jean Stuartinventors
Life of this patent
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Abstract
A gasket to seal a service door of an appliance. The gasket is formed from a needled glass mat attached to a glass paper by random needling. The mat is very compressible to seal the door to the appliance to prevent the entrance of flammable vapors and the egress of exhaust. The glass paper provides structural strength and carries a vermiculite coating that protects the surface nearest the flame. Random needling retains the structural strength of the product to prevent it from tearing.
Claims20
A gasket material comprising:
- a mat of fiber material;
- a sheet material applied to one side of said mat;
- said mat and said sheet material being connected by random needling to form-a gasket material.
A gasket for a door of a combustion chamber, comprising:
- a mat of glass fibers;
- a glass paper attached to one side of said glass mat to form a composite;
- said composite being formed into a shape of a door for a combustion chamber for placement as a gasket between the door and a wall of the heater combustion chamber.
A method of making a gasket material comprising:
- providing a mat of fibers;
- needling said mat of fibers;
- randomly needling a sheet material to said needled mat to form a gasket material.
The method according to claim 16, further comprising applying a layer of vermiculite flame-resistance to said sheet material.
A material comprising:
- a mat of fiber material;
- a sheet material applied to one side of said mat;
- said mat and said sheet material being connected by random needling to form a material.
Dependencies are inferred from the claim text.