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:
Aug. 21, 1986
Applicant:
Inventor:
Hiroshi Kumazaki, Numazu, JP;
Assignee:
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 405 ; 264 401 ; 2643281 ; 425149 ; 425214 ; 425542 ; 425555 ;
Abstract
In an injection molding machine which injects molten metal into a metal mold cavity by an injection step and a succeeding pressure holding step, the injection step is controlled by the steps of filling the molten resin into the metal mold cavity at a high speed during the filling step; switching the injection operation from the filling step to the pressure holding step; concurrently operating braking means for applying a braking force to the plunger of the injection molding machine for stopping the plunger; and locking the braking means for continuously applying a constant force to the plunger until a gate seal of the metal mold cavity is completed.