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:
Oct. 22, 1991
Filed:
Mar. 30, 1990
David J Gaskell, Suffolk, GB;
Lucas Industries Public Limited Company, Birmingham, GB;
Abstract
A deformable electrode for electrochemical machining (ECM) of passages, in particular curved passages or passage sections in workpieces, is constructed from a deformable, electrically insulating tube having electrically conductive electrode tip means arranged around the end of the tube to form the working tip of the electrode. Electrical conductor means are connected to the electrode tip means and extend along the tube. During ECM of a passage an electrolyte solution is supplied along the center of the tube, and a voltage is applied between the workpiece the electrode tip means, via the conductor means, so that dissolution of the workpiece occurs near the electrode tip means at the working face of the passage being machined.