3561246

Information

• Patent Grant
• 3561246

• References
• Source

• Patent Number

  3,561,246

• Date Filed

  Not available

• Date Issued

  Tuesday, February 9, 1971
  54 years ago

• CPC

  • B21B17/14 - without mandrel
  • B21B19/06 - Rolling hollow basic material
  • Y10T428/12278 - Same structure at both ends of plural taper
  • Y10T428/12292 - Workpiece with longitudinal passageway or stopweld material [e.g., for tubular stock, etc.]
  • Y10T428/12389 - having variation in thickness
  • Y10T428/13 - Hollow or container type article [e.g., tube, vase, etc.]

• US Classifications

  • 072 - Metal deforming
  • 138 - Pipes and tubular conduits
  • 428 - Stock material or miscellaneous articles