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:
Jan. 04, 1977
Filed:
Jan. 21, 1974
Frank A Marion, Riverside, CA (US);
Hugh J McSpadden, Riverside, CA (US);
Universal Propulsion Co., Riverside, CA (US);
Abstract
This invention relates to materials having properties of withstanding temperatures in the thousands of degrees for extended periods of time without gross decomposition. The invention also relates to methods of producing such materials. The materials constituting this invention include binders and fillers mixed with the binders. The materials form a char when subjected to the elevated temperatures. The surface of the char glows in the luminous to incandescent range and rejects incoming heat by thermal radiation. The fillers have the properties of decomposing through a number of successive steps, each step advanced in temperature from the previous step by a relatively small amount. The gaseous products of such successive decompositions flow through the char, which is porous so as to provide transpirational heating. The resultant gases produced at the surface of the material provide a gaseous barrier to absorb heat and to transport heat away from the surface of the material.