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Process and apparatus for producing a linkage of an air/fuel ratio detector holder to an exhaust pipe

  • US 6,470,546 B1
  • Filed: 06/16/2000
  • Issued: 10/29/2002
  • Est. Priority Date: 08/02/1997
  • Status: Expired due to Fees
First Claim
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1. Apparatus for producing a linkage between an exhaust pipe and a hollow cylindrical air/fuel ratio detector holder with an opening for receiving an air/fuel ratio detector in the holder, comprising means for providing a desired finished shape of the exhaust pipe through internal high-pressure on a buckling portion of the exhaust pipe so as to have an inverted contact contour shape complimentary to a convex casing surface of the detector holder, said means including:

  • an internal high-pressure tool divided into an upper die and a lower die for forming a surface by inserting a blank pipe into the desired finished shape of the exhaust pipe, and a shaping device integrated into the tool with a contour facing the pipe corresponding to a contact contour of the casing surface of the holder at a location of intended contact surface at the exhaust pipe.

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