3828938

Information

• Patent Grant
• 3828938

• References
• Source

• Patent Number

  3,828,938

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • B66C23/10 - the paths being substantially horizontal Level-luffing jib-cranes
  • B66C23/72 - Counterweights or supports for balancing lifting couples
  • B66C2700/0307 - Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib
  • B66C2700/0392 - Movement of the crane arm Coupling of the crane arm with the counterweights Safety devices for the movement of the arm

• US Classifications

  • 212 - Traversing hoists