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:
Jun. 23, 1981
Filed:
Sep. 26, 1979
Hiromichi Nei, Yokohama, JP;
Ryoichi Ohtani, Yokohama, JP;
Iwao Ohshima, Kawasaki, JP;
Yuji Horikawa, Tokyo, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kanagawa, JP;
Abstract
A plugging indicator comprises an economizer having concentric outer and inner pipes one ends of which are connected to a main conduit through which liquid metal passes, an electromagnetic pump mounted on the outer pipe for branching the liquid metal into the outer pipe, a device for measuring flow quantity of the liquid metal passing through the outer pipe, and cooling means mounted on the outer pipe. The inner pipe is provided with two openings as a plugging orifice and a by-pass orifice to deposit impurities contained in the liquid metal. The plugging indicator further comprises a thermometer for measuring temperature at the plugging orifice, a blower for supplying cooling air to the cooling means, and a device for controlling the blower in response to the flow quantity at the flow quantity measuring device and the temperature at the plugging orifice.