Composite air duct

Composite air duct

  • CN 2,296,907 Y
  • Filed: 01/12/1998
  • Issued: 11/11/1998
  • Est. Priority Date: 01/12/1998
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of composite air duct, the end face that it is characterized in that airduct 1 is a polygon, respectively has a linkage (2) to surround the closed mouth of pipe on the polygonal limit, linkage (2) is connected cooperation with the linkage of another airduct (1) that links to each other.

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