Screw structure

Screw structure

  • CN 201,934,481 U
  • Filed: 02/23/2011
  • Issued: 08/17/2011
  • Est. Priority Date: 02/23/2011
  • Status: Active Grant
First Claim
Patent Images

1. screw structural is characterized in that including:

  • One spiral shell head;

    One screw rod, extend downwards this spiral shell head bottom certainly, and form a spiro tooth part in outer surface;

    The two anti-resin layers that fall are bonding on respectively on the surface of spiro tooth part two relative lengthwise sides of this screw rod.

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