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. 10, 1996
Filed:
Jun. 06, 1995
Hideki Koyama, Fujiyoshida, JP;
Fanuc Ltd., Yamanashi, JP;
Abstract
A semiconductor switching circuit is connected to a DC power source for an inverter to control a servomotor in an injection molding machine, and a PWM signal controls an ON/OFF operation of a switching device in the semiconductor switching circuit so as to feed power to a heater of the injection molding machine. Since the DC power source feeds the heater with power, it is possible to overcome irregularity in power supply, and linearly vary a conducting time, thereby finely and accurately controlling a temperature. The DC power source for the inverter to control the servomotor also serves as a DC power source for the heater, resulting in no need for a special power source circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile