Patents by Inventor Steven G. Costa

Steven G. Costa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of making a piston for a dispenser
    Patent number: 8337737
    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.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: December 25, 2012
    Assignee: Nordson Corporation
    Inventors: Steven G. Costa, David J. Dunlap
  • METHOD OF MAKING A PISTON FOR A DISPENSER
    Publication number: 20110101563
    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.
    Type: Application
    Filed: January 13, 2011
    Publication date: May 5, 2011
    Applicant: NORDSON CORPORATION
    Inventors: Steven G. Costa, David J. Dunlap
  • Dispenser and piston for dispensing a liquid material
    Patent number: 7891528
    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.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: February 22, 2011
    Assignee: Nordson Corporation
    Inventors: Steven G. Costa, David J. Dunlap
  • DISPENSER AND PISTON FOR DISPENSING A LIQUID MATERIAL AND METHOD OF MAKING A PISTON
    Publication number: 20080041885
    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.
    Type: Application
    Filed: June 11, 2007
    Publication date: February 21, 2008
    Applicant: NORDSON CORPORATION
    Inventors: Steven G. Costa, David J. Dunlap