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. 05, 1995
Filed:
Nov. 16, 1993
Scott C Hoover, Elyria, OH (US);
Kenneth Jeffrey, Cleveland, OH (US);
George O Porter, Amherst, OH (US);
Nordson Corporation, Westlake, OH (US);
Abstract
A dispenser which prevents dripping and drooling of liquid material upon shut off of the dispenser, especially during intermittent dispensing operations. The first embodiment includes a nozzle body and nozzle fitting which include liquid flow passageways and together form an air passageway which communicates with a discharge passageway upstream of the discharge end of the nozzle fitting. Exhaust air from the dispenser is directed into the air passageway such that excess liquid material is blown out of the discharge passageway and off of the discharge end of the nozzle fitting immediately upon shut off of the dispenser. A second embodiment incorporates this anti-drip and anti-drool feature directly into the valve and valve stem of the dispenser by providing the air passageway through the valve and valve stem.