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:
Jun. 19, 2001
Filed:
Sep. 21, 2000
Applicant:
Inventors:
Assignee:
Nissei Plastic Industrial Co., Ltd., Nagano-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
B65D 8/854 ;
U.S. Cl.
CPC ...
B65D 8/854 ;
Abstract
An electric injection apparatus comprising a hydraulic cylinder for back pressure control. The electric injection apparatus includes rear and front supports integrally coupled to each other by a tie bar with a predetermined spacing therebetween. A heating barrel having an injection screw arranged therein is attached to the front support. Between the supports, a screw thrust member having an injection screw rotatably coupled to its front center is movably arranged so that the tie bar penetrates therethrough. Besides, the cylinder in the hydraulic cylinder is isolated from the heating barrel. This eliminates thermal effects and allows stable back pressure control in long-hour use.