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. 11, 1992
Filed:
Jun. 16, 1989
Applicant:
Inventors:
Akihiko Tsuda, Zama, JP;
Norihiro Iwamoto, Zama, JP;
Assignee:
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164-41 ; 164150 ;
Abstract
A method and system is described for sensing an abnormality in a degassing flow path of a vacuum die casting machine. When a vacuum device is operated to degas a gas in a cavity of a mold, a gas speed flowing through a piping is detected. The gas speed thus detected is compared with the predetermined maximum proper air speed value to determine whether the maximum gas speed value falls into the tolerance limits of the maximum proper air speed value or not. In this comparison, when the detected value departs from the tolerance limits, it is regarded that a clogging has occurred in the degassing system and an alarm is issued.