Patents by Inventor Peter Ross Dunstan

Peter Ross Dunstan 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).

  • Inlet valve mechanism
    Patent number: 5742951
    Abstract: An interlock mechanism (6-9, 41-47) for a cistern or flush tank (1) has an underwater flush valve (3). The interlock mechanism is linked with the float arm (7, 57) of an inlet valve (5, 50). The interlock mechanism latches the float arm in its raised position in the event of a leaky flush valve (3). Thus although a single cistern volume is lost there is no further loss. The next time a flush actuator (10) is operated the interlock mechanism in unlatched allowing the cistern to re-fill. The rising water re-sets the interlock latch mechanism.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: April 28, 1998
    Assignee: Caroma Industries Limited
    Inventors: Sonny Rene Wright, Peter Ross Dunstan, Luke Daniel Streeter