Electric heating – Metal heating – For bonding with pressure
Reexamination Certificate
2011-06-07
2011-06-07
Van, Quang T (Department: 3742)
Electric heating
Metal heating
For bonding with pressure
C219S091200, C219S086510, C219S086250
Reexamination Certificate
active
07956308
ABSTRACT:
A system and method for controlling a piston-cylinder assembly of a welding apparatus, the piston-cylinder assembly including a plurality of pressure chambers, wherein the piston-cylinder assembly is operatively coupled to at least one welding electrode of the welding apparatus so as to effect movement of the electrode in a pre-stroke and weld motion, comprises: connecting to a first port of the piston-cylinder assembly a first fluid pressure, the first port in communication with a first pressure chamber so as to effect the pre-stroke motion of the electrode; and connecting to a second port of the piston-cylinder assembly a second fluid pressure, the second port in communication with a second pressure chamber so as to effect the weld stroke motion of the electrode, wherein the second fluid pressure is different from the first fluid pressure.
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Machine translation of JP 08309553 A, Nov. 2010.
Pneumatic Spotwelding Control Systems Training & Maintenance Manual; May 2006, pp. 1-20.
Augustine Paxton C.
Parran Mike G.
Atkisson Jianying
Parker-Hannifin Corporation
Renner , Otto, Boisselle & Sklar, LLP
Van Quang T
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