Patents Represented by Attorney Thomas J. Rossa

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  • Airless spray nozzle and method of making it
    Patent number: 4346849
    Abstract: An airless spray coating nozzle is made by cutting interpenetrating grooves into opposite sides of a nozzle tip blank. The groove on the pressurized or entrance side of the tip has a bottom portion which is wedge-shaped in cross section. The groove on the unpressurized or exit side of the tip has a bottom portion which is trapezoidal in cross section. Both grooves are cut into the nozzle tip with a grinding wheel after the tip has been hardened.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: August 31, 1982
    Assignee: Nordson Corporation
    Inventor: Alvin A. Rood