U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Reinforced ceramic structure

Patent 4260657 Issued on April 7, 1981. Estimated Expiration Date: Icon_subject April 7, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3490983

3676293

3925133

Multifilament composites
Patent #: 3949126
Issued on: 04/06/1976
Inventor: Crawford, Jr.

Carbon articles
Patent #: 3969124
Issued on: 07/13/1976
Inventor: Stewart

Low-weight dent-resistant structure and method for production thereof
Patent #: 4048360
Issued on: 09/13/1977
Inventor: Jonda

Composite rocket nozzle structure
Patent #: 4063684
Issued on: 12/20/1977
Inventor: O'Brien ,   et al.

Lightweight structural part formed of carbon fiber-reinforced plastic Patent #: 4092453
Issued on: 05/30/1978
Inventor: Jonda

Inventors

Assignee

Application

No. 05/856880 filed on 12/02/1977

US Classes:

428/113, Fibers428/367, Including free carbon or carbide or therewith (not as steel)428/902HIGH MODULUS FILAMENT OR FIBER

Examiners

Primary: Van Balen, William J.

Attorney, Agent or Firm

International Classes

C04B 14/38 (20060101)
C04B 16/00 (20060101)
C04B 14/46 (20060101)
C04B 16/04 (20060101)
C04B 33/00 (20060101)
C04B 33/36 (20060101)
E04C 5/07 (20060101)

Abstract

A reinforced ceramic structure is provided utilizing a composite reinforcing member embedded in a ceramic casting. The reinforcing member is optimally unidirectional composite rope, preferably of graphite epoxy or silicon carbide. By virtue of the thermal expansion rate of the reinforcing member being substantially the same as the ceramic material, the reinforcement member remains integral with the ceramic casting material though subjected to thermal cycles and provides an increase in the tensile strength of ceramic casting heretofore unobtained.

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