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US 5,709,639 AGranted
Insulating roll cover
AssigneeGlobal Consulting, Inc.
InventorsCharles M. Hart, James D. Rogers, Harry L. King, John J. Bartholomew
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AssigneeGlobal Consulting, Inc.
InventorsCharles M. Hart, James D. Rogers, Harry L. King, John J. Bartholomew
Estimating the term…
An insulating roller cover is now disclosed that provides a highly desirable combination of features. The cover is free from asbestos and is therefore of more desirable construction for handling and use. For the roller cover, at least substantially ceramic fiber is highly compressed, providing a dense and refractory, elevated temperature resistant insulating cover. The cover may itself serve as a load bearing surface; or may provide a foundation or protective media for annular discs or 10 sleeve members made of various, load bearing materials. These load bearing materials may be unable to resist direct contact with the shaft due to thermal shock or the differences in their respective expansion and contraction rates. Where impregnant is utilized with the highly compressed fiber, such will often comprise a colloidal substituent.
A highly compressed at least substantially ceramic fiber composition consisting essentially of compressed ceramic fiber impregnated with colloidal rigidizer, said fibers being compressed in an amount within the range of from about 60 percent to about 80 percent, basis dry fiber, to a fiber density within the range of from about 20 to about 50 pounds per cubic foot.
A highly compressed at least substantially ceramic fiber composition consisting essentially of compressed ceramic fiber impregnated with colloidal rigidizer, said fibers being compressed in an amount within the range of from above about 55 percent to about 85 percent, basis dry fiber, to a fiber density within the range of from about 20 to about 50 pounds per cubic foot.
Dependencies are inferred from the claim text.