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US 6,021,693 AGranted
Method of manufacturing blades for scissors
AssigneesChang Feng-Sing, Market USA Promotinal Marketing Inc.
InventorChang Feng-Sing
Life of this patent
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Abstract
A method of manufacturing a blade for scissors includes steps of: fusing an alloy of zinc and aluminum; filling said alloy into a first mould for manufacturing a metal cutter for scissors; applying high temperature and high pressure to the first mould to form a unitary metal cutter; fitting the metal cutter into a second mould for manufacturing a blade; and squirting viscous resin into the second mould to partially enclose the metal cutter, whereby the blade is sharp, lightweight, durable in use and fit for mass production.
Claims2
A method of manufacturing a blade for scissors comprising steps of:
- fusing an alloy of zinc and aluminum;
- filling said alloy into a first mould for manufacturing a metal cutter for scissors;
- applying high temperature and high pressure to said first mould to form a unitary metal cutter;
- fitting said metal cutter into a second mould for manufacturing a blade;
- and
- squirting viscous resin into said second mould to partially enclose said metal cutter.
3 more elements
Dependencies are inferred from the claim text.