STEVEN PAUL COSTA
Dietitian and Nutritionist in East Providence, RI
License number
Rhode Island FMC13053
Issued Date
Jul 22, 2005
Expiration Date
Mar 19, 2018
Category
Food Safety
Type
Certified Food Safety Mgr
Address
Address
736 NORTH BROADWAY, East Providence, RI 02914
Phone
(401) 270-7111 (Work)
(401) 270-7001 (Fax)
(401) 270-7001 (Fax)
Professional information
Dispenser And Piston For Dispensing A Liquid Material And Method Of Making A Piston
US Patent:
2008004, Feb 21, 2008
Filed:
Jun 11, 2007
Appl. No.:
11/760984
Inventors:
Steven G. Costa - Rumford RI, US
David J. Dunlap - Rehoboth MA, US
David J. Dunlap - Rehoboth MA, US
Assignee:
NORDSON CORPORATION - Westlake OH
International Classification:
G01F 11/00
US Classification:
222386
Abstract:
A dispenser for dispensing a liquid onto a substrate includes a dispenser body having an output and a reservoir in fluid communication with the output, the reservoir being defined by a wall and adapted to hold a supply of liquid to be dispensed. A piston is disposed in the reservoir and adapted to pressurize the liquid so that an amount of liquid is dispensed from the output of the dispenser. The piston includes a base portion having an outer periphery and having a first hardness, and a skirt portion integrally molded to the outer periphery of the base portion and having a second hardness lower than the first hardness. A two-shot molding operation may be used to form the piston with the base portion being, for example, formed in the first shot of the molding operation and the skirt portion being formed in the second shot of the molding operation.
Method Of Making A Piston For A Dispenser
US Patent:
8337737, Dec 25, 2012
Filed:
Jan 13, 2011
Appl. No.:
13/005689
Inventors:
Steven G. Costa - Rumford RI, US
David J. Dunlap - Rehoboth MA, US
David J. Dunlap - Rehoboth MA, US
Assignee:
Nordson Corporation - Westlake OH
International Classification:
B29C 45/14, B29C 45/16
US Classification:
264250, 264255, 264274
Abstract:
A dispenser for dispensing a liquid onto a substrate includes a dispenser body having an output and a reservoir in fluid communication with the output, the reservoir being defined by a wall and adapted to hold a supply of liquid to be dispensed. A piston is disposed in the reservoir and adapted to pressurize the liquid so that an amount of liquid is dispensed from the output of the dispenser. The piston includes a base portion having an outer periphery and having a first hardness, and a skirt portion integrally molded to the outer periphery of the base portion and having a second hardness lower than the first hardness. A two-shot molding operation may be used to form the piston with the base portion being, for example, formed in the first shot of the molding operation and the skirt portion being formed in the second shot of the molding operation.