1374631

Information

• Patent Grant
• 1374631

• References
• Source

• Patent Number

  1,374,631

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1921
  103 years ago

• CPC

  • B23B31/005 - Cylindrical shanks of tools
  • B23B31/117 - Retention by friction only
  • B23B51/00 - Tools for drilling machines
  • B23B51/123 - Conical reduction sleeves
  • B23B2231/0204 - Connection of shanks to working elements of tools
  • B23B2251/02 - Connections between shanks and removable cutting heads
  • B23B2251/208 - Eight cutting edges
  • Y10T279/17965 - Drill type

• US Classifications

  • 279 - Chucks or sockets