Welding blanket
AssigneeMinnesota Mining and Manufacturing Company
InventorsMark C. Skinner, Thomas W. Schwartz
Life of this patent
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Abstract
A welding blanket comprising a layer of flexible protective material comprising unexpanded vermiculite and inorganic heat resistant fibrous material, which layer undergoes localized expansion in a direction normal to its major surfaces when contacted by spatter of molten metal during a welding process; and two relatively thin flexible cover sheets, one attached along each of the major surfaces of the layer of flexible material to maintain its structural integrity.
Claims7
A welding blanket for protecting a surface from the spatter of molten metal during a welding process, said welding blanket comprising a layer of flexible protective material having opposite major surfaces and comprising unexpanded vermiculite and inorganic heat resistance fibrous material, which layer of flexible protective material undergoes localized expansion in a direction normal to said surfaces when contacted by spatter of molten metal during a welding process to restrict embedding of the spatter in the blanket so that the spatter globules will fall off or can be easily brushed off of the blanket;
- and two relatively thin flexible cover sheets, one attached along each of said major surfaces.
A welding blanket for protecting a surface from the spatter of molten metal during a welding process, said welding blanket comprising a layer of flexible protective material having opposite major surfaces and comprising unexpanded vermiculite and inorganic heat resistant fibrous material, which layer of flexible protective material undergoes localized expansion in a direction normal to said surfaces when contacted by spatter of molten metal during a welding process to restrict embedding of the spatter in the blanket so that the spatter globules will fall off or can be easily brushed off of the blanket;
- and two relatively thin flexible cover sheets, one attached along each of said major surfaces, said cover sheets being attached to said layer of flexible protective material by a stitch bonding.
A welding blanket for protecting a surface from the spatter of molten metal during a welding process, said welding blanket comprising a layer of flexible protective material having opposite major surfaces and comprising unexpanded vermiculite and inorganic heat resistant fibrous material, which layer of flexible protective material undergoes localized expansion in a direction normal to said surfaces when contacted by spatter of molten metal during a welding process to restrict embedding of the spatter in the blanket so that the spatter globules will fall off or can be easily brushed off of the blanket;
- and two relatively thin flexible cover sheets, one attached along each of said major surfaces, said cover sheets being attached to said layer of flexible protective material by sewing.
Dependencies are inferred from the claim text.