2857968

Information

• Patent Grant
• 2857968

• References
• Source

• Patent Number

  2,857,968

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1958
  66 years ago

• CPC

  • B21D28/246 - Selection of punches
  • B21D28/26 - in sheets or flat parts
  • Y10T83/101 - With stopping means effective on completion of predetermined number of tool cycles
  • Y10T83/4574 - Plurality of work stops successively effective
  • Y10T83/8761 - Continuously moving drive means [e.g., "gag"]
  • Y10T83/8828 - Plural tools with same drive means
  • Y10T83/8843 - Cam or eccentric revolving about fixed axis

• US Classifications

  • 083 - Cutting
  • 234 - Selective cutting