Electrolysis: processes – compositions used therein – and methods – Electrolytic erosion of a workpiece for shape or surface...
Reexamination Certificate
2007-01-09
2007-01-09
Wyszomierski, George (Department: 1742)
Electrolysis: processes, compositions used therein, and methods
Electrolytic erosion of a workpiece for shape or surface...
C205S672000, C205S673000
Reexamination Certificate
active
10636150
ABSTRACT:
A method and apparatus for forming a fluid dynamic pressure groove in a fluid dynamic pressure bearing is provided. The method is accomplished by initially positioning and securing multiple workpieces to be machined to their respective machining devices. An electrochemical dissolving effect is imparted to each target surface of the multiple workpieces and then at least one fluid dynamic pressure groove is formed on each target surface of the multiple workpieces. Each groove may have a specified shape, dimension and surface condition. An electrolyte is directed from a common electrolyte tank to each of the machining devices used on the multiple workpieces.
Yasuda Tomoyuki
Yoshikawa Hiroshi
Alexander Michael P.
Garces, Esq. John C.
Lutzker, Esq. Joel E.
Minebea Co. Ltd.
Schulte Roth & Zabel
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