Laminated die form and method of producing same

• US 2,679,172 A
• Filed: 03/16/1951
• Issued: 05/25/1954
• Est. Priority Date: 03/16/1951
• Status: Expired due to Term

• Current Assignee: Joel S. Cohen, Sanders G. Cohen, Walton S. Clevenger
• Original Assignee: Joel S. Cohen, Sanders G. Cohen, Walton S. Clevenger
• Inventors: Clevenger, Walton S., Cohen, Joel S., Cohen, Sanders G.
• Application Number:
  US03/216,048
• Time in Patent Office: 1,166 Days
• US Class Current: 76/107.1
• CPC Class Codes: B21D 37/20 Making tools by operations not covered by a single other subclass
• CPC Class Codes: B23P 15/246 Laminated dies
• CPC Class Codes: B29C 2033/385 by laminating a plurality of layers moulds built up by stacking mould elements, e.g. plates, blocks, rods, in general B29C33/301, tyre moulds made of a plurality of laminations B29D2030/0609
• CPC Class Codes: B29C 33/302 Assembling a large number of mould elements to constitute one cavity
• CPC Class Codes: B29C 33/3842 Manufacturing moulds, e.g. shaping the mould surface by machining
• CPC Class Codes: B29C 51/10 Forming by pressure difference, e.g. vacuum

Claims