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US 4,900,599 AGranted
Filament reinforced article
AssigneeAirfoil Textron Inc.
InventorGordon S. Doble
Life of this patent
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AssigneeAirfoil Textron Inc.
InventorGordon S. Doble
Estimating the term…
An improved method of forming an article includes providing continuous woven, flat, helical tape of filaments and a continuous flat, helical tape of foil. The two helical tapes are interleaved to form a helical assembly having turns of filaments alternating with turns of foil. Deformation forces are applied against the turns of the helical assembly in a direction parallel to the central axis of the helix to bond the turns of the tapes of foil and filament together while maintaining the filaments free of axially extending forces. During the bonding of the turns of the helical foil and filament tapes, the tapes may be bonded to a housing or other component of an article to be reinforced. Radial reinforcing can be provided by including in the helical assembly a layer having filaments with central axes which are radial relative to the central axes of the filaments of the helical tape.
A filament reinforced article having a central axis, comprising an axially consolidated metallic matrix and a helical tape of a plurality of side-by-side spaced apart reinforcing filaments extending helically through the matrix, said filaments being of relatively high strength, low ductility compared to the matrix and being bonded in the matrix with each filament being continuous from one end to the other end thereof along said central axis and substantially free of plastic deformation evidenced by cracking or buckling along the length of the filament.
A filament reinforced article having rotational symmetry about a central axis, comprising an axially consolidated metallic matrix and a continuous helical tape of a plurality of side-by-side spaced apart reinforcing filaments extending helically through the matrix with the central axis of the tape substantially coincident with said central axis of said article, said filaments being of relatively high strength, low ductility compared to the matrix and bonded in the matrix, each filament being continuous from one end to the other end thereof along said central axis and substantially free of plastic deformation evidenced by cracking or buckling along the length of the filament.
Dependencies are inferred from the claim text.