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. 03, 2009
Filed:
Feb. 19, 2004
Herbert Gunther, Allendorf, DE;
Herbert Gunther, Allendorf, DE;
Gunther GmbH & Co., Metallverarbeitung, Frankenberg/Eder, DE;
Abstract
A needle valve nozzle for an injection mould has a nozzle body with at least one melt channel that terminates in a nozzle mouthpiece and a fluidic connection to a mould cavity formed by a mould insert. A shut-off needle penetrates the melt channel and nozzle mouthpiece and can be displaced between open and closed positions. At least one infeed cone is provided upstream of a seal seat to centre the shut-off needle, the lower end of which forms a shut-off part. The nozzle mouthpiece consists of a material with high thermal conductivity, with the infeed cone configured in a centering body consisting of wear-resistant material and running concentrically with the longitudinal axis of the needle valve nozzle. The entering body is held against and/or in the nozzle mouthpiece in a positive-fit and its end section forming an outlet for the melt can be engaged with the mould insert.