Patents by Inventor Ram K. Agrawal

Ram K. Agrawal 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).

  • Patent number: 5226599
    Abstract: A flush sprinkler has a sprinkler unit raisable and lowerable in hydraulic manner in a shaft and, several nozzle units, which, as required, can be switched into a sprinkling state with an upper nozzle selecting handle and whose nozzle jets can be modified independently by a jet spreading member adjustable with an associated jet adjusting handle. There are also rings for varying a spray spreading angle as a function of size and position. The handles are raisable and lowerable with the sprinkler unit and therefore easily accessible. For cleaning the bearing of the sprinkler unit, an automatically valve-controlled flushing device is provided. For the reliable draining of the sprinkler, a drain valve is provided directly in the water flow and its body is clipped into a valve bore of the shaft.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: July 13, 1993
    Assignee: Gardena Kress & Kastner GmbH
    Inventors: Wolfgang Lindermeir, Ram K. Agrawal, Johann Schaffer, Frantz Lopic, Christian Stephany