Title: Composition of ceramic material

Abstract: A composition of ceramic material, useful for forming seals in apparatus intended to be subjected to high temperatures, for example electrical heating elements, includes kaolin, silica, and zircon, and also calcium, sodium and boron ions, e.g. as frit and borate components, whereby the material remains substantially free of bubbling or foaming during a stage of heating to expand and harden it, and has enhanced properties of impact resistance and resilience.

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Inventors: Golya, William R. (Gibsonia, PA, US)
Doornwaard, John (Gibsonia, PA, US)

Application Number: 605349
Filing Date: 1975-08-18
Publication_date: 1977-07-05
Assignee: Saxonburg Ceramics, Inc. (Saxonburg, PA)
Primary Class(es): 501/15
Other Classes:
US Patent Ref:

1370276	Mar, 1921	Buckman et al.	106/46.
2908580	Oct, 1959	Stetson	106/46.
3926602	Dec, 1975	Andrus	156/39.

Other Refs:
Primary Examiner: Douglas, Winston A.
Assistant Examiner: Bell, Mark
Attorney: Linton; Ulle C.