Patents by Inventor Francis Pook

Francis Pook 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).

  • Spray nozzles
    Patent number: 5106022
    Abstract: A spray nozzle has a swirl chamber and delivery passage with its downstream end divergent. The downstream end is substantially conical with a cone angle in the range 10 degree to 30 degree and terminates with a sharply angled transition intothe forward face of the nozzle.
    Type: Grant
    Filed: October 4, 1990
    Date of Patent: April 21, 1992
    Inventor: Francis Pook