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:
Feb. 15, 2000
Filed:
Mar. 24, 1998
Applicant:
Inventors:
Walter Krenkel, Renningen, DE;
Richard Kochendoerfer, Stuttgart, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D04H / ;
U.S. Cl.
CPC ...
428293 ; 428408 ; 428294 ; 428367 ; 74457 ; 74462 ; 74431 ; 74439 ; 74448 ; 305194 ;
Abstract
A cogged component, especially a wheel, rack, pinion, spline, or similar structure, intended for the mechanical transmission of force. The body is of a composite reinforced with carbon fibers. The body is, in accordance with the invention, of fiber-reinforced ceramic comprising a lattice of essentially continuous carbon fibers and a matrix that contains carbon. The fibers in the lattice are sheathed in silicon carbide formed essentially by liquid silicon infiltrating the lattice and reacting with the carbon in the matrix. The cogs are constructed either of a similar fiber-reinforced ceramic with a load-accommodating fiber orientation or of a monolithic ceramic.