Patents by Inventor Vishwa N. Bansal

Vishwa N. Bansal 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).

  • Ink-drop print-head
    Patent number: 4184169
    Abstract: A drop-on-demand ink-drop printer (as opposed to a continuous-droplet-stream printer) has a printhead through which ink flows continuously. In the vicinity of the orifice through which drops are expelled there is a constriction, for instance a Venturi tube, which (a) maintains a negative meniscus at the orifice, and (b) prevents any accumulation of detritus or gas at the orifice. The ink drop is expelled by some form of shock-wave producing means.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: January 15, 1980
    Assignee: International Standard Electric Corporation
    Inventors: Terrence F. E. Taylor, Vishwa N. Bansal, Peter T. C. Raby