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:
Jul. 07, 2009
Filed:
Oct. 24, 2007
Tatsuhiro Uchiyama, Minamitsuru-gun, Yamanashi, JP;
Satoshi Takatsugi, Minamitsuru-gun, Yamanashi, JP;
Osamu Saito, Minamitsuru-gun, Yamanashi, JP;
Junpei Maruyama, Minamitsuru-gun, Yamanashi, JP;
Tatsuhiro Uchiyama, Minamitsuru-gun, Yamanashi, JP;
Satoshi Takatsugi, Minamitsuru-gun, Yamanashi, JP;
Osamu Saito, Minamitsuru-gun, Yamanashi, JP;
Junpei Maruyama, Minamitsuru-gun, Yamanashi, JP;
Fanuc Ltd, Yamanashi, JP;
Abstract
A method of indicating an open/close state of a check valve of an injection molding machine simply and more accurately. The method detects screw rotational force during injection and displays in wave form on the screen of a display device changes in detected rotational force. An open/close state of the check valve can be indicated based on the waveform pattern displayed on the display screen because the screw rotational force waveform pattern changes when the check valve closes. From the fact that the screw rotational force waveform pattern changes when the check valve closes, the open/close state of the check valve can be indicated from the displayed waveform.