2818686

Information

• Patent Grant
• 2818686

• References
• Source

• Patent Number

  2,818,686

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1958
  67 years ago

• CPC

  • B23Q1/4828 - a single rotating pair followed parallelly by a single sliding pair
  • B23Q1/34 - Relative movement obtained by use of deformable elements
  • B24B1/04 - subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration
  • B28D5/021 - by drilling
  • B28D5/047 - by ultrasonic cutting

• US Classifications

  • 451 - Abrading
  • 175 - Boring or penetrating the earth