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US 5,059,464 AGranted
Phenol resin toothed wheel and a method of producing the same
AssigneeShin-Kobe Electric Machinery Co., Ltd.
InventorMitsuzo Mikuni
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Abstract
A phenol resin toothed wheel having a toothed portion formed of meta-aromatic polyamide fiber spun cloth impregnated with phenol resin blended with epoxy resin.
Claims5
A phenol resin toothed wheel having a toothed portion formed of a moulded part of phenol resin impregnated with reinforcing material and thermally pressurized, said toothed wheel characterized in that said reinforcing material is meta-aromatic polyamide fiber spun cloth and that said phenol resin is impregnated with epoxy resin.
A method of producing a phenol resin toothed wheel comprising the steps of;
- impregnating meta-aromatic polyamide fiber spun cloth with phenol resin blended with epoxy resin;
- cutting said meta-aromatic polyamide fiber spun cloth into cloth pieces having a predetermined size after said phenol resin blended with epoxy resin is dried;
- rolling up said cloth pieces into rods while they are heated and deforming said rods into rings;
- loading at least one of said rings together with moulding material for a web and a boss and a bush in a mould and thermally forming them in a pressurized manner to produce a moulded part
- and forming teeth by mechanically working on said ring of said moulded part to produce said phenol resin toothed wheel.
2 more elements
Dependencies are inferred from the claim text.