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Norman Shorr and Hubertus W. V. Willems received US Patent No. 3,515,531 on June 2, 1970, filed May 1, 1967. It was assigned to PPG Industries Inc.
The patent's description opens:
The present invention is an improvement over the aforesaid Shorr invention in that by using a mixture containing as the essential ingredients, anthophyllite asbestos, an aluminum silicate fiber produced under the names Fiberfrax by the Carborundum Company or Kaowool by Babcock & Wilcox Company and a suitable binder, such as portland cement, a disc for rolls can be produced which is suitable for use at temperatures approximately 500 F. higher than those described in the aforesaid Shorr application.
- Author
- Norman Shorr; Hubertus W. V. Willems
- Published by
- US Patent Office
- Series
- US Patent No. 3,515,531
- Date
- June 2, 1970
- Library no.
- ACL Doc 22700 · asbestosclaims.law/library/22700
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 225 KB
Where it was listed
- Asbestos, July 1970, in its patents department (the year's issues)
Cited on this site
Cite this document
Norman Shorr, Hubertus W. V. Willems. “High temperature traction rolls (US Patent 3,515,531, 1970).” June 2, 1970. US Patent No. 3,515,531. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22700. https://asbestosclaims.law/library/22700.
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