The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 1989
Filed:
Dec. 11, 1987
Edmund R Hinman, Monroe, CT (US);
Richard A Jack, Granby, CT (US);
Airfoil Textron Inc., Lima, OH (US);
Abstract
An electrolyte chamber includes a cathode movable in the chamber toward a workpart to machine same and spaced from a wall of the chamber by a transverse clearance space and further includes a sealing piston movable transversely in the chamber in opposite directions toward and away from the cathode to substantially close off or open the clearance space. The sealing piston includes one or more fluid passages extending therethrough such that electrolyte pressure exerted on the sealing piston is substantially balanced in the opposite directions of movement such that unbalanced electrolyte pressure forces do not prevent the sealing piston from closing off the transverse clearance.