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:
Apr. 05, 1988
Filed:
Jun. 02, 1987
Abstract
A seating apparatus for sealing a semiconductor element in a resin has a plunger which injects a resin pellet into the cavities of an upper and lower mold. The plunger is driven by a reciprocating mechanism through a flexible transmission member so that the directions of movement of the plunger and the reciprocating mechanism need not be parallel. In preferred embodiments, the reciprocating mechanism is a ball screw mechanism which is driven by a servomotor, and the flexible transmission member is a roller chain which is slidably disposed within a lower mold. The lower mold may be longitudinally divided into a plurality of sections which are detachably secured to one another to enable easy manufacture and disassembly. A ventilating mechanism for passing cooling air along the length of the roller chain during molding may be provided to prevent the roller chain from being damaged by the heat of molding.