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US 4,375,779 AGranted
Composite sewing thread of ceramic fibers
AssigneeMinnesota Mining and Manufacturing Company
InventorEdward M. Fischer
Life of this patent
Estimating the term…
Abstract
A composite fiber sewing thread comprising a central core having one or more strands of an inorganic or organic fiber or blends thereof, and an outer jacket enclosing the core and having the form of a tubular body of braided strands of continuous ceramic fibers is disclosed. The thread is useful in very high temperature applications.
Claims20
A composite sewing thread comprising:
- a central core having one or more strands of inorganic or organic fibers or blends thereof, and
- an outer jacket enclosing said core and having the form of a tubular body of braided strands of continuous ceramic fibers, said braided strands being served with fibers selected from inorganic and organic fibers.
A composite sewing thread comprising:
- a central core having one strand of continuous or staple aramid fibers, said strand having a fiber denier in the range of 300 to 600, and one strand of continuous alumina-boria-silica fibers, said strand having a number of fibers in the range of 130 to 390 and a fiber denier in the range of 400 to 900, and
- an outer jacket enclosing said core and having the form of a tubular body of 8 braided strands of continuous alumina-boria-silica fibers, each braid strand having a number of fibers in the range of 130 to 780 and a fiber denier in the range of 200 to 1800, each braided strand being double served with 50 denier rayon yarn, and said tubular body having a number of picks in the range of 10 to 20 picks per 2.54 cm,
- said alumina-boria-silica fibers having an alumina:boria mol ratio of 9:2 to 3:1.5, and containing up to 65 weight percent of silica.
A composite sewing thread comprising:
- a central core having one or more strands of inorganic or organic fibers or blends thereof, and
- an outer jacket enclosing said core and having the form of a tubular body of braided strands of continuous ceramic fibers.
Dependencies are inferred from the claim text.