2158720

Information

• Patent Grant
• 2158720

• References
• Source

• Patent Number

  2,158,720

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1939
  85 years ago

• CPC

  • B23D37/16 - for broaching helical grooves
  • Y10T279/17786 - Spring
  • Y10T409/400875 - with means to select cutter or to select or modify cutter drive
  • Y10T409/402975 - Arcuate groove in cylindrical surface
  • Y10T409/406825 - and rotary motion to cutter

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 279 - Chucks or sockets