Method of manufacturing blades for scissors

• US 6,021,693 A
• Filed: 09/21/1998
• Issued: 02/08/2000
• Est. Priority Date: 09/21/1998
• Status: Expired due to Fees

• Current Assignee: Market USA Promotional Marketing Incorporated
• Original Assignee: Chang Feng-Sing, Market USA Promotional Marketing Incorporated
• Inventors: Feng-Sing, Chang
• Primary Examiner(s): Watts, Douglas D.
• Application Number:
  US09/157,253
• Time in Patent Office: 505 Days
• Field of Search: 76/104.1, 76/106.5, 76/114, 76/119, 76/DIG. 7, 30/260, 264/250, 264/275, 264/279
• US Class Current: 76/106.5
• CPC Class Codes: B21K 11/06 scissors
• CPC Class Codes: B29C 45/14 incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles B29C45/1671 takes precedence
• CPC Class Codes: B29L 2031/72 Cutting equipment, e.g. punches sawing equipment B29L2031/77; grinding equipment B29L2031/736

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.

Claims

1. 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.

2. The method of manufacturing a blade for scissors as claimed in claim 1, wherein said metal cutter is of an L-shaped cross section.