2777641

Information

• Patent Grant
• 2777641

• References
• Source

• Patent Number

  2,777,641

• Date Filed

  Not available

• Date Issued

  Tuesday, January 15, 1957
  67 years ago

• CPC

  • E01B9/16 - for wooden sleepers
  • F16B13/02 - in one piece with protrusion or ridges on the shaft
  • F16B13/141 - Fixing plugs in holes by the use of settable material
  • F16B2013/147 - Grout with reinforcing elements or with fillers
  • Y10T29/49746 - by applying fluent material, e.g., coating, casting
  • Y10T29/49885 - with coating before or during assembling
  • Y10T29/49945 - by driven force fit

• US Classifications

  • 238 - Railways: surface track
  • 029 - Metal working
  • 052 - Static structures
  • 227 - Elongated-member-driving apparatus