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.

Date of Patent:
Jun. 22, 1993

Filed:

Aug. 05, 1991
Applicant:
Inventors:

Shinji Gasami, Hiroshima, JP;

Shoso Nishida, Hiroshima, JP;

Assignees:

Japan Steel Works, Ltd., Tokyo, JP;

Daikyo Co., Ltd., Hiroshima, JP;

Plalead Co., Ltd., Hiroshima, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425127 ; 2643287 ; 2643288 ; 26432811 ; 425556 ; 425572 ; 425574 ; 425576 ;
Abstract

An injection molding machine for molding hollow plastic products which includes a pair of molds wherein one of the molds is supported rotatably about the center axis thereof a frame of the machine and each of the molds has at least one set having one male die and two female dies arranged on each product plane at an equal distance from an equal angular pitch about the center axis thereof. The rotatable mold is rotated reciprocally between first and second angular positions at each of which a primary molding of a pair of half products and a secondary molding of a complete product are performed simultaneously.


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