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. 23, 1996
Filed:
Sep. 26, 1994
Applicant:
Inventor:
Nobuyuki Nakamura, Nagano, JP;
Assignee:
Nissei Plastic Industrial Co., Ltd., Nagano, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425557 ; 425561 ; 425562 ; 425564 ;
Abstract
An injection apparatus having a pressure holding device of a novel constitution, capable of preventing flow-out and decrease of resin when holding pressure, and eliminating instability in pressure holding due to volume changes, by forming the front end of the pressure holding plunger obliquely disposed between front and rear resin paths or penetrating a passage between the resin paths.