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:
Mar. 18, 2003
Filed:
Sep. 22, 2000
Applicant:
Inventor:
Atsushi Koide, Nagano, JP;
Assignee:
Nissei Plastic Industial Co., Ltd., Nagano-Ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 4/518 ; B29C 4/566 ;
U.S. Cl.
CPC ...
B29C 4/518 ; B29C 4/566 ;
Abstract
An injection molding machine is equipped with a drive mechanism which reciprocates a movable member, such as a screw or a mold clamping mechanism, by use of a servomotor and a ball screw mechanism. In the injection molding machine, an end portion of a rotor shaft of the servomotor is connected directly to an end portion of a ball screw (or a nut) of the ball screw mechanism for reciprocating the movable member. This structure enables rotation of the servomotor to be transmitted directly to the ball screw (or the nut) of the ball screw mechanism without intervention of a rotation transmission mechanism.