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:
Sep. 27, 1983
Filed:
Sep. 15, 1981
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A discharge machining apparatus wherein the workpiece is supported over an aperture in the work support plate on top of a tank at the machining station for cooperation with an electrode movable toward and away from the workpiece in alignment with the aperture. A machining solution recirculation device injects the solution into the tank and removes the solution from the tank at a greater rate than it is injected into the tank. Additional fluid is directed into the tank through the aperture between the workpiece and electrode. An additional conduit having a solenoid controlled valve is provided for supplying an excess of solution to the tank upon raising of the electrode to overflow the tank and remove all sludge and combustible gases. The exhaust pipe for the solution is also adjustably mounted within the tank to more effectively position the inlet of the exhaust pipe for the optimum removal of combustible gases. A pressure release valve is provided in the side wall of the tank to vent explosive gases and prevent damage to the workpiece and electrode.