Patents by Inventor Francis Stanley Chapman

Francis Stanley Chapman 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).

  • Pressurized water supply systems
    Patent number: 6568426
    Abstract: A pump assembly for a pressurized water system includes a pressure sensitive switch (27) arranged to monitor the water pressure in a pipe (14) extending between a water delivery pump (13) and a tap (15), the switch (27) controlling operation of the pump (13) dependent upon pressure in the pipe (14). A timer switch (30) is disposed in series with the pressure sensitive switch (27), to inhibit pump operation other than for a limited period of time following triggering of the timer switch (30).
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: May 27, 2003
    Assignee: Gee Group LTD
    Inventor: Francis Stanley Chapman