Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Reexamination Certificate
2005-07-05
2005-07-05
Jones, David (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
C072S059000
Reexamination Certificate
active
06912884
ABSTRACT:
Providing a method of hydroforming a tube where the hydroformed diameter is less than the tube length and a hydroforming die having two or more die members having an internal shape same as the tube shape and an internal cavity having the desired formed shape. Where the said die members are movable to an opened and closed position such that the tube is placed inside the die members cavities and the tube ends are sealed and hydraulic pressure source is connected to the interior of the tube and thereby expanding the tube so as to conform to the shape of the said die members cavities. And where the directions of opening and closing of the said die members are in the direction of the said tube axis such that the amount of force necessary to hold the die members in a closed position during said step of expanding, is kept to a minimum.
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