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Self-erecting tower crane with bayonet joints between sections

  • US 3,250,401 A
  • Filed: 12/17/1964
  • Issued: 05/10/1966
  • Est. Priority Date: 12/17/1964
  • Status: Expired due to Term
First Claim
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1. IN A TOWER CRANE THE COMBINATION COMPRISING:

  • A TOWER FORMED OF A PLURALITY OF SECTIONS;

    TWIST CONNECTIONS BETWEEN THE TOWER SECTIONS;

    A REVOLVABLE FRAME THAT IS MOVABLE ALONG AND REVOLVABLE ABOUT THE TOWER;

    AND JAW MEANS MOUNTED ON AND REVOLVABLE WITH THE FRAME AND ADAPTED TO ENGAGE THE TOWER TO ENABLE THE FRAME TO BE USED AS A WRENCH TO CONNECT AND DISCONNECT THE TOWER SECTIONS.

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