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:
Dec. 25, 2001
Filed:
Mar. 04, 1999
Applicant:
Inventors:
Makoto Matsuura, Hiroshima, JP;
Hiroshi Masaki, Hiroshima, JP;
Shinya Naitou, Hiroshima, JP;
Hiroshi Yamagata, Hiroshima, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 2/300 ; B22D 1/806 ; B22D 4/100 ;
U.S. Cl.
CPC ...
G01F 2/300 ; B22D 1/806 ; B22D 4/100 ;
Abstract
An inlet/outlet pipe extending downward from a bottom face of a body for a ladle is bent at its tip end into an S-shape in an intermediate portion of the pipe, and its tip end is located at a level higher than that of the bent portion. When a negative pressure in the ladle body is increased, a height of range of a molten metal is increased before and after an occurrence of disturbance in the ladle body, so that the negative pressure in the ladle body is made balance with a weight of the molten metal. Thereby, the molten metal is measured and held at a constant volume in the ladle body.