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:
Oct. 21, 1980
Filed:
Oct. 12, 1978
Frank Campbell, Jr, Houston, Harris County, TX (US);
Other;
Abstract
A two-piece, interlocking laminated refractory for covering a waterpipe and method of manufacturing same having a low thermally conductive inner ceramic fiber layer, an outer ceramic fiber layer which is less thermally conductive than the inner layer and a metal mesh reinforcement secured to and disposed between the inner and outer layers. The refractory shape includes two main segments, each having a body segment, two protuberances spaced apart from the body segment by corresponding recesses and a void between the two protuberances. The two segments are fitted together such that the body segment and pair of protuberances of one segment are closely received and interlocked with the void and the pair of recesses on the opposing main segment. The inner and outer layers of the refractory are vacuum-formed by the use of a perforated vacuum mold submerged in a first and second ceramic fiber slurry.