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:
Oct. 10, 1995
Filed:
Feb. 15, 1994
Hiraku Shindo, Yonezawa, JP;
Seiki Kabushiki Kaisha, Yamagata, JP;
Abstract
An injection mold probe and a runnerless injection mold, in which the injection mold has a tip heater for intermittently heating a tip portion of the probe and a body heater for heating a body portion of the probe. The heaters being furnished with power from a single power source. The injection mold probe has its tip portion provided with a tip heater, which is made of platinum or a platinum alloy with the electric resistance thereof increased quickly with temperature increase caused by energization and its body portion provided with a body heater, which is made from a nicrome wire with the electric resistance thereof less increased with temperature increased caused by energization, the tip and body heaters being connected in series. The probe is mounted in a runner portion of a die with its tip portion disposed near a gate portion of the die. The runnerless injection mold comprises a power source unit for controlling power in synchronism to a molding process to serially supply power to the tip and body heaters.