Back to results
US 4,478,544 AGranted
Composite rivet
AssigneeMicrodot Inc.
InventorNorman S. Strand
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a reinforced plastic rivet comprising a plurality of substantially continuous carbon fibres encapsulated in a partially polymerized thermoset resin matrix and enveloped in a high tensile strength low modulus tubular sheath. A portion of the rivet is deformable to form a head and fully polymerizable upon heating thereof.
Claims2
A reinforced thermoset plastic rivet comprising:
- a plurality of substantially parallel continuous longitudinally extending carbon fibres encapsulated in a B-stage thermoset resin matrix,
- a plurality of longitudinally and circumferentially extending aromatic polyamid fibres enveloping said carbon fibres and encapsulated in a B-stage thermoset resin matrix,
- at least one portion of said rivet being deformable to form a rivet head and fully polymerizable to the thermoset condition upon heating thereof, said polyamid fibres enveloping said carbon fibres after formation of said rivet head to preclude splaying of said carbon fibres.
Dependencies are inferred from the claim text.