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:
Feb. 12, 1991
Filed:
Jan. 25, 1990
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A wire electric discharge machining apparatus comprises a tank having an opening at its one side surface, which is movable in a two-dimensional plane, a shielding body having a through hole, which is in slide-contact with the side surface having the opening of the tank so as to close the opening, an arm which has first and second ends, at least one of which is fixed to a machine body and the other is extended into the tank through the through hole and the opening, and which supports in the tank a wire guide for guiding a wire electrode to a workpiece placed in the tank, an enclosure member capable of expansion and contraction in response to a relative movement of the tank to the arm, the enclosure member having both ends sealingly connected to the circumferential portion of the through hole of the shielding body and the machine body respectively, and a working liquid supplying device for supplying a working liquid to the tank through a space formed between the arm and the enclosure member.