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. 24, 1995
Filed:
Sep. 15, 1993
Michael L Majercak, Tempe, AZ (US);
Other;
Abstract
An improved plunger apparatus used in a resin molding device for encapsulating electronic components. At least one annular recess is located in the bottom side of the plunger. The annular recess redirects the plasticized resin to flow towards the mold cavities in the molding device and away from the interface between the plunger and the cylinder of the molding device, thereby optimizing the flow of resin to the cavities and reducing the tendency of excess gas and resin to flow away from the cavities. At least one flat side is located in the lengthwise surface of the plunger. The flat side forms an enlarged clearance in the interface between the flat side and the cylinder of the molding device. The enlarged clearance receives and provides an outlet for any excess gas or resin that flows in the interface. The improved plunger still stably guides within the cylinder, and the improved plunger allows the molding apparatus to encapsulate electronic components more economically, efficiently, and effectively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile