The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2001
Filed:
Jan. 18, 2000
Triplicane A. Parthasarathy, Beavercreek, OH (US);
Ronald J. Kerans, Yellow Springs, OH (US);
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
A thermal gradient resistant fiber-reinforced composite structure which has a hot operating side and an opposite cool operating side and a thickness &tgr; therebetween. In one embodiment, the composite has two regions: hot and cool. The hot region consists essentially of a fiber having a first coefficient of thermal expansion and a matrix material and the cool region consists essentially of a fiber having a second coefficient of thermal expansion and a matrix material. In this embodiment, the hot region has a thickness &tgr;,of about 10 to 90 percent of the total thickness &tgr; between the hot side and the cool side, and the cool region has a thickness &tgr;,of about 90 to 10 percent of the total thickness &tgr;. In a second embodiment, the composite has a hot operating side and an opposite cool operating side and a thickness &tgr;′ therebetween. In this embodiment, the composite has three regions: hot, intermediate and cool. The hot region consists essentially of a fiber having a first coefficient of thermal expansion and a matrix material and has a thickness &tgr;,′ of about 10 to 45 percent of the total thickness &tgr;′ between the hot side and the cool side, the cool region consists essentially of a fiber having a second coefficient of thermal expansion and a matrix material and has a thickness &tgr;,′ of about 45 to 10 percent of the total thickness &tgr;′, and the intermediate region consists essentially of a fiber having a third coefficient of thermal expansion and a matrix material and has a thickness &tgr;,of about 10 to 50 percent of the total thickness &tgr;′ between the hot side and the cool side. The intermediate region can also consist of a mixture of the two fibers used in the outer regions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile