The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 1989
Filed:
Apr. 24, 1987
Applicant:
Inventors:
Mark C Skinner, Afton, MN (US);
Thomas W Schwartz, Hudson, WI (US);
Assignee:
Minnesota Mining and Manufacturing Company, Saint Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428102 ; 428920 ; 428921 ;
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.