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:
May. 17, 1988
Filed:
Sep. 30, 1986
Bryce C Granger, Ravenna, OH (US);
McNeil-Akron, Inc., Akron, OH (US);
Abstract
Injection molding apparatus (10) for processing and transferring molding material from a feed mechanism (30) to a nozzle (75) for discharging into a mold including a bolster (12), an injection head (11) extending through the bolster, an injection barrel (37) in the injection head for containing a predetermined sized shot of the molding material, a plunger (46) movable in the injection barrel for discharging the shot of molding material into the mold, a bore (47) extending longitudinally of the plunger for loading molding material into the barrel, feed mechanism (30) supplying molding material to the bore of the plunger irrespective of the position of the plunger, and a valve (60) closing the bore upon movement of the plunger in one direction for discharging the shot of molding material and opening the bore upon movement of the plunger in the other direction for discharging the barrel with a predetermined shot of molding material. The apparatus may include an auxiliary mechanism (90) for supporting the feed mechanism at a location displaced from the plunger to maintain the feed mechanism substantially perpendicular to the direction of movement of the plunger.