MOULD FOR CASTING ELECTRODE GRIDS FOR ELECTRIC STORAGE BATTERIES

• US 3,709,459 A
• Filed: 11/19/1970
• Issued: 01/09/1973
• Est. Priority Date: 11/21/1969
• Status: Expired due to Term

• Current Assignee: Charles James Bushrod
• Original Assignee: Charles James Bushrod
• Inventors: Bushrod, Charles James
• Primary Examiner(s): Annear, R. Spencer
• Application Number:
  US05/090,889
• Time in Patent Office: 782 Days
• Field of Search: 164/138 249/114,134 117/5.1
• US Class Current: 249/134
• CPC Class Codes: B22C 3/00 Selection of compositions for coating the surfaces of moulds, cores, or patterns
• CPC Class Codes: B22D 25/04 Casting metal electric battery plates or the like manufacture thereof by multi-step processes H01M4/82
• CPC Class Codes: H01M 4/84 involving casting
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A mould for casting lead or lead alloy electrode grids for electric storage batteries comprises backing plates of metal faced with inserts of silicon nitride exposed to the melt.

Claims

2. A mould as claimed in claim 1 in which the backing plates are of cast iron.

3. A mould as claimed in claim 1 which includes a layer of metal foil, of high conductivity, between the silicon nitride inserts and the backing plates.

4. A mould as claimed in claim 3 in which the metal foil is copper foil.

5. A mould as claimed in claim 1 which includes asbestos paper between the silicon nitride inserts and the backing plates.

6. A mould as claimed in claim 2 which includes asbestos paper between the silicon nitride inserts and the backing plates.

7. A mould as claimed in claim 3 which includes asbestos paper between the silicon nitride inserts and the backing plates.

8. A mould as claimed in claim 4 which includes asbestos paper between the silicon nitride inserts and the backing plates.