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. 19, 2014
Filed:
Mar. 06, 2012
Yoshihisa Nakatsuka, Akashi, JP;
Yoshihisa Nakatsuka, Akashi, JP;
Toyo Machinery & Metal Co., Ltd., Akashi-shi, JP;
Abstract
The invention is provided with a first injection electric motor used for low-speed injection and increasing pressure, a second injection electric motor used for high-speed injection, first and second power transmission mechanisms for transmitting rotary motion of the injection electric motors to a screw shaft, first and second clutch mechanisms provided in the power transmission mechanisms, an injection plunger advanced and withdrawn integrally with respect to a nut threaded on the screw shaft, and a controller for controlling the driving of the injection electric motors and the clutch mechanisms. The controller starts the second injection electric motor from a stopped state before the point in time where the high-speed injection step is to commence; and switches the second clutch mechanism from a disengaged state to an engaged state at the point in time where the high-speed injection step is to commence, or at a requisite timing prior thereto.