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. 15, 1990
Filed:
May. 10, 1988
Applicant:
Inventors:
Assignee:
Chisso Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B28B / ;
U.S. Cl.
CPC ...
425145 ; 264 407 ; 425150 ; 425166 ; 425375 ; 425412 ; 425449 ; 4254519 ; 425557 ; 425D / ;
Abstract
A plasticized resin is extruded from an extruding machine into an accumulator into which the resin is stored by an amount exceeding the amount required for one resin molding operation. The stored resin, in operation, is fed through a flexible hose towards a gear pump under controlled pressure conditions. The resin is measured by the gear pump and the displacement and the rotational speed of the gear pump are controlled by a suitable controller such as microcomputer to exactly measure the plasticized resin to be charged into the mold cavity in a predetermined distributing mode. The clamping of the mold can be effected by a clamping force less than that required by a conventional press-molding machine.