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:
Nov. 17, 1992
Filed:
Jun. 18, 1991
Tom W Johnson, Hunting Valley, OH (US);
Nitrojection Corporation, Middlefield, OH (US);
Abstract
A nozzle for the injection of a viscous fluid, such as a thermoplastic and a non-viscous fluid such as a gas into a mold cavity of a mold body includes a valve element mounted for reciprocation in a nozzle body flow passage to control a flow of viscous fluid through the nozzle body discharge end and into a mold cavity. The valve element includes a barrel having a first end selectively engaging a portion of the nozzle body discharge end to prevent a flow of viscous fluid therepast and a second end. A bore extends longitudinally through the barrel and a pin is positioned in the barrel bore. The pin has a first end located adjacent the barrel first end and a second end which is secured to the valve element such that the pin moves with the barrel as it reciprocates in the nozzle body. A non-viscous fluid flow passage is defined between the pin and the barrel.