Steven Ray Schenck

US Patent:

6576330, Jun 10, 2003

Filed:

Jul 28, 2000

Appl. No.:

09/627944

Inventors:

Steven R. Schenck - Brighton MI
Karl W. Dersch - Okemos MI
Lloyd R. Chapman - Knoxville TN
William B. Webb - Oak Ridge TN
Christopher W. Ivey - Powell TN

Assignee:

Rex Roto Technologies, Inc. - Fowlerville MI
Zyp Coatings, Inc. - Oak Ridge TN

International Classification:

B32B 1800

US Classification:

4282934, 428325, 428332, 428364, 428401

Abstract:

A fully inorganic boron nitride paste, containing 80 to 94% of a boron nitride paint and 6 to 20% of ceramic fibers, is provided to allow the process of manufacturing boron nitride âshellâ coatings of 0. 0313 to 0. 25 inch onto ceramic substrates chosen from a wide range of densities. De-clumping of the ceramic fibers such that fiber lengths are greater than 100 micrometers and clumps are less than {fraction (3/32)} inch improves boron nitride âshellâ layer uniformity. Boron nitride content of greater than 36 wt. % (or about 50 vol. %) in the boron nitride âshellâ provides ceramic structures with a matrix of boron nitride that provides long-term nonwetting behavior for molten nonferrous metals.

US Patent:

62486772, Jun 19, 2001

Filed:

Oct 19, 1998

Appl. No.:

9/174743

Inventors:

Leroy D. Dowding - Charlotte MI
Steven R. Schenck - Brighton MI
John D. Vandermark - Ann Arbor MI
Robert W. Price - Pinckney MI

Assignee:

Rex Roto Technologies, Inc. - Fowlerville MI

International Classification:

B32B 702

US Classification:

442381

Abstract:

A ceramic fiber blanket is inserted into a mold, and ceramic fiber slurry, preferably made with refractory ceramic fibers, binders, and water, is deposited on the blanket. Vacuum pressure is created under the blanket to pull the fibers of the slurry toward the fibers of the blanket to entangle them together. The slurry and blanket is then dried to form a rigid yet surface compliant ceramic fiber composite product with superior thermal insulating and acoustic dampening properties.