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:
Sep. 17, 2013
Filed:
Aug. 31, 2009
Mario Romanin, Valley City, OH (US);
Brian Burkley, Duluth, GA (US);
Les Varga, Cumming, GA (US);
Chuck Ganzer, Cumming, GA (US);
Jeff Owen, Suwanee, GA (US);
Mario Romanin, Valley City, OH (US);
Brian Burkley, Duluth, GA (US);
Les Varga, Cumming, GA (US);
Chuck Ganzer, Cumming, GA (US);
Jeff Owen, Suwanee, GA (US);
Nordson Corporation, Westlake, OH (US);
Abstract
Methods and apparatus for dispensing liquid material provide the option to dispense precise and repeatable quantities or volume of material over a wide range of viscosities. In one embodiment, a metering chamber is provided that can be filled and emptied at the same time so as to eliminate time delays between dispensing operations. The material may be under pressure and that pressure is used to fill and empty a metering chamber. In another embodiment, a control device is provided with a metering chamber wherein the control device operates to switch pressurized fluid between two passages to the metering chamber. In a more specific embodiment, the control device may be, for example, a valve, and more specifically in one embodiment a pneumatically actuated spool valve.