Process for manufacturing a pointer

• US 6,180,041 B1
• Filed: 07/01/1993
• Issued: 01/30/2001
• Est. Priority Date: 07/07/1992
• Status: Expired due to Fees

• Current Assignee: Malta Incorporation
• Original Assignee: Malta Incorporation, Nippon Seiko Kabushiki Kaisha
• Inventors: Takizawa, Tadao
• Primary Examiner(s): ORTIZ, ANGELA Y
• Application Number:
  US08/084,097
• Time in Patent Office: 2,770 Days
• Field of Search: 264/250, 264/255, 264/259, 264/328.8, 264/297.2, 264/297.3, 264/297.8
• US Class Current: 264/255
• CPC Class Codes: G01D 13/22 Pointers, e.g. settable pointer

Abstract

A process of manufacturing a pointer from a resin material and a pointer weight section from a resin material mixed with a metal powder, which weight section is integrally molded with the pointer body to provide a well-balanced pointer facilitating the design and manufacture of the pointer assembly.

Claims

1. A process of manufacturing a pointer by molding a resin in a mold comprising an upper die having a plurality of cavities and a lower core die, comprising forming a first molding space with said core die and a first cavity corresponding to a weight section of said pointer, injecting a mixture of resin material and metal powder into said first molding space, forming a second molding space with said core containing said weight section and a second cavity, and injecting the resin material into the second molding space corresponding to an indicating section of said pointer thereby integrally molding said weight section and said indicating section of said pointer.

4. The process according to claim 1, wherein said core die comprises a plurality of rotatable cores.

2. A process of manufacturing a pointer comprising an indicating section, a pointer cap covering a base of said indicating section and a weight section by molding a resin in a mold comprising an upper die having a plurality of cavities and a lower core die, comprising forming a first molding space with said core and a first cavity corresponding to the weight section, injecting a mixture of resin material and metal powder into said first molding space, forming a second molding space with said die containing said weight section and a second cavity, injecting the resin material into the second molding space corresponding to said pointer cap and fixedly attaching said indicating section to said pointer cap obtained through said molding process.

5. The process according to claim 2, wherein said core die comprises a plurality of rotatable cores.

3. A process of manufacturing a pointer by integrally molding a weight section of a mixture of resin material and metal powder and a pointer body section of a resin material comprising forming a first molding space with an upper die having a plurality of cavities using a first cavity and a lower core die corresponding to either said pointer body section or said weight section, injecting and cooling a resin material for said pointer body section or a mixture of resin material and metal powder for said weight section into said first molding space, forming a second molding space with a second cavity and core die corresponding to the said pointer body section or said weight section not molded in said first molding space with a second cavity and core die, and injecting and cooling the resin material or the mixture of resin material and metal powder into said second molding space.

6. The process according to claim 3, wherein said core die comprises a plurality of rotatable cores.