Electric heating – Metal heating – For bonding with pressure
Reexamination Certificate
2006-01-06
2008-07-15
Kerns, Kevin P (Department: 1793)
Electric heating
Metal heating
For bonding with pressure
C219S059100, C219S092000
Reexamination Certificate
active
07399942
ABSTRACT:
A pair of tubes are provided, one of greater diameter than the other so that the tubes can be telescoped together. An annular inward facing projection is formed on the outer tube for contact with the outside surface of the inner tube when the tubes are telescoped together. An annular outer facing projection is formed on the inner tube for contacting with the inside surface of the outer tube when the tubes are telescoped together. An adhesive is placed on one of the tubes for contacting with the other tube when the tubes are telescoped together. After the tubes are telescoped together weld current is conducted through the tubes to weld the annular projections to the respective opposing tube in contact therewith and at least partially cure the adhesive.
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Cantalin John F.
Fickes John D.
Hengel James F.
Roggenkamp Timothy J.
Wang Pei-Chung
GM Global Technology Operations Inc.
Kerns Kevin P
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