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:
Feb. 10, 1998
Filed:
Sep. 13, 1995
David F Andel, Lawrenceville, GA (US);
David R Jeter, Woodstock, GA (US);
Nordson Corporation, Westlake, OH (US);
Abstract
A device for relieving the pressure of pressurized materials, such as sprayable hot melt adhesives includes a storage tank (40), a manifold (44), a source of pressure for pressurizing the pressurized materials, and a dump valve (10) for relieving the pressure of the pressurized materials when the device is deactivated or turned off. The dump valve (10) includes a relief port (22) and a spring and compressed air arrangement for opening and closing the relief port (22). The dump valve (10) can be combined with a pressure relief valve and can be retrofitted to existing manifolds (44). A method of depressurizing a pressurized device for spraying pressurized material is also disclosed and includes the steps of activating a pressure means for pressurizing materials within a manifold, pressurizing the materials via the pressure means, deactivating the pressure means, and relieving the pressure of the materials when the pressurizing means is deactivated.