3235316

Information

• Patent Grant
• 3235316

• References
• Source

• Patent Number

  3,235,316

• Date Filed

  Not available

• Date Issued

  Tuesday, February 15, 1966
  59 years ago

• CPC

  • E21B10/22 - characterised by bearing, lubrication or sealing details
  • E21B10/23 - with drilling fluid supply to the bearings
  • F16C33/121 - Use of special materials
  • F16C33/14 - Special methods of manufacture Running-in
  • F16C33/24 - with different areas of the sliding surface consisting of different materials
  • F16C2204/04 - based on silver
  • F16C2223/46 - by welding
  • F16C2352/00 - Apparatus for drilling

• US Classifications

  • 384 - Bearings