Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2006-04-11
2006-04-11
Cozart, Jermie E. (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C029S777000, C029S790000, C604S523000, C604S264000, C604S272000
Reexamination Certificate
active
07024749
ABSTRACT:
The present invention is directed to a novel process for inserting a cannula, such as a hypodermic needle, into a hub member by roughening a first portion of the cannula while leaving a second portion substantially smooth such that the first portion forms an interference fit and the second portion a line-to-line fit with the hub bore. In the absence of an adhesive, the second portion is passed through the hub bore followed by the first portion. The first portion is forced into the hub bore to provide an adhesive-free interference fit that is capable of resisting puncturing forces during normal use.
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Baxter International Inc.
Cozart Jermie E.
Mayo Michael C.
Swartz Douglas W.
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