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:
Aug. 08, 1989
Filed:
Sep. 02, 1988
Hiromi Nakamura, Zama, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
A die casting apparatus has a sleeve having one end communicating with a die cavity defined by a movable die and a fixed die and connected to a feed pipe, a plunger slidably fitted in the sleeve for forcing molten metal supplied from the feed pipe through the sleeve into the die cavity, and a hydraulic cylinder for moving the plunger in the sleeve. An inert gas supply unit communicates with the sleeve for supplying an inert gas to a passage defined in the sleeve and also to the feed pipe. The inert gas supply unit comprises a closed casing and a gas feed pipe for supplying the inert gas into the closed casing. The casing is connected to an opposite end of the sleeve in covering relation thereto, and has a window for visually checking the interior of the casing therethrough.