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US 5,156,787 AGranted
Pultrusion method of making brake linings
OwnerBenjamin V. Booherinventor
Life of this patent
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Abstract
A continuous process for the manufacture of friction units includes the steps of impregnating a plurality of strands of reinforcing fibers with a thermoplastic material, pulling the impregnated strands of reinforcing fibers through a composite forming die for forming a body having the peripheral configuration of the friction units, and selectively cutting the body into a plurality of the friction units.
Claims9
A continuous process for the manufacture of friction units comprising the steps of:
- impregnating a plurality of strands of reinforcing fibers with a resin material;
- pulling said impregnated strands of reinforcing fibers into a composite forming die for forming a body having the peripheral configuration of said friction units;
- solidifying said body by curing said resin;
- and
- forming a plurality of friction units and a friction surface on each of said friction units by selectively cutting said body transverse to the length of said strands into a plurality of said friction units, so that said friction surface is normal to the length of said strands.
2 more elements
A continuous process for the continuous manufacture of composite friction units comprising the steps of:
- selecting and impregnating a plurality of elongated strands of reinforcing fibers with a resin material;
- pulling said impregnated strands of reinforcing fibers in a predetermined alignment through a composite forming die for forming a body having the peripheral configuration of said friction units;
- solidifying said body by curing said resin;
- and
- forming a plurality of friction units having a friction surface by selectively cutting said body at least along one path defining a friction surface transverse to the length of said strands into a plurality of said friction units.
2 more elements
Dependencies are inferred from the claim text.