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. 12, 1994
Filed:
Jun. 23, 1992
Indra R Baxi, Solon, OH (US);
Tom W Johnson, Hunting Valley, OH (US);
Nitrojection Corporation, Chagrin Falls, OH (US);
Abstract
A method for injecting a viscous fluid and a non-viscous fluid into a mold cavity of a mold body includes the step of regulating a flow of viscous fluid through a nozzle body discharge end and into a mold cavity with a valve element. The valve element is mounted for reciprocation in a nozzle body flow passage and includes a barrel having a first end, which selectively engages 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 bore. A non-viscous fluid flow passage is defined between the pin and the barrel wherein the non-viscous fluid flow passage is annular in shape and has a substantially constant diameter at and adjacent the barrel first end. A viscous fluid flows through the nozzle body flow passage around the barrel and into the mold cavity. A non-viscous fluid flows through the non-viscous fluid flow passage around the pin and into the mold cavity.