3855871

Information

• Patent Grant
• 3855871

• References
• Source

• Patent Number

  3,855,871

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1974
  50 years ago

• CPC

  • B65G23/44 - Belt or chain tensioning arrangements
  • E21C29/16 - Winches or other means for pulling cable or chain
  • E21C35/04 - Safety devices
  • E21F13/068 - Special adaptations for use at the junction of the working face with the gallery
  • F16H7/12 - of an idle pulley
  • F16H2007/0859 - Check valves
  • Y10T74/19014 - Plural prime movers selectively coupled to common output

• US Classifications

  • 074 - Machine element or mechanism
  • 474 - Endless belt power transmission systems or components