Structure and method for joining parts
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United States of America Patent
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Oct 21, 2003
Grant Date -
Sep 5, 2002
app pub date -
May 3, 2002
filing date -
Mar 7, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to an article of manufacture comprising a partial or complete tubular primary part defining a tube axis and having an at least partially curved circumferential wall at least partially encircling the axis; said wall comprising a joint edge, defining a) a joint line along said edge on said wall, b) a joint plane drawn to contain said joint line, c) a joining direction having at least a direction component perpendicular to said joint line and said joint plane, d) a locking plane at least partially at the surface or within a section through said wall in which both said joint line and said joining direction lies and e) a normal direction being perpendicular to said joint plane; and at least one locking structure, the improvement comprising that the locking structure includes at least one positive or negative hook structure in said locking plane, extending in the joining direction away from the joint line and having an undercut in the locking plane and that the hook structure is exposed from at least one side of the locking plane when viewed along the normal direction. The invention also relates to a method or joining such a primary part to a secondary part and joined such parts.
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