Metal deforming – By application of fluent medium – or energy field – Using fixed die
Reexamination Certificate
2007-09-11
2007-09-11
Jones, David B (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
Using fixed die
C072S057000, C029S421100
Reexamination Certificate
active
11423544
ABSTRACT:
An apparatus (10, 110) and method to form a workpiece (32, 132) into a useful product (28, 128) using a pressurized fluid (14), also termed as “hydroforming”. The workpiece may be a tube or may be one or a plurality of sheets of a material. The apparatus has a chamber (12) adapted to contain a quantity of a fluid, a hydroforming means positioned within the chamber, and means for substantially immersing the workpiece in the fluid before, during and after the hydroforming operation. Dies (16, 18) enclose the workpiece and provide a cavity of desired shape against which the workpiece is expanded by the pressurized fluid. The chamber may be open or closed to the atmosphere during operation and the fluid temperature and/or level may be controlled.
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Grant Stephen L.
Jones David B
Kwak James L.
Standley Law Group LLP
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