Patents by Inventor Atis Strazdins

Atis Strazdins 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).

  • Double piston colorant dispenser
    Patent number: 4966308
    Abstract: A liquid dispenser having two separate sized dispensing chambers. The first being larger volume dispenser having a piston which is of variable stroke to move within a first chamber to draw liquid into the chamber and then to force the liquid out of said chamber. The second being a smaller volume dispenser which comprises a second piston which is of variable stroke and moves within a bore in said first piston to draw liquid into said bore and to force liquid out of said bore.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: October 30, 1990
    Assignee: Strazdins (International) Pty. Limited
    Inventor: Atis Strazdins
  • Double piston colorant dispenser
    Patent number: 4964534
    Abstract: A liquid dispenser having two separate sized dispensing chambers. The first being larger volume dispenser having a piston which is of variable stroke to move within a first chamber to draw liquid into the chamber and then to force the liquid out of said chamber. The second being a smaller volume dispenser which comprises a second piston which is of variable stroke and moves within a bore in said first piston to draw liquid into said bore and to force liquid out of said bore.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: October 23, 1990
    Assignee: Strazdins (International) Pty. Limited
    Inventor: Atis Strazdins
  • Liquid dispenser
    Patent number: 4781312
    Abstract: A liquid dispenser having a downwardly facing outlet with liquids of relatively high viscosity usually forming a meniscus at the outlet, the size of the meniscus being determined by the physical properties of the liquid, the atmospheric conditions, and also the cleanliness of the outlet nozzle. The present invention seeks to overcome this problem by providing means to generate a suction within the nozzle after the liquid has been dispensed, to draw any liquid within the area of the outlet of the nozzle back into the nozzle.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: November 1, 1988
    Assignee: Strazdins (International) Pty. Limited
    Inventor: Atis Strazdins