Patents by Inventor Dau-Jen Lu

Dau-Jen Lu 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).

  • Reel adapted to be used with a hose with a connector and a sprinkler detachably connected to the connector
    Patent number: 6691930
    Abstract: A reel is composed of a base having therein a recess, a seat formed on a bottom face defining the recess so as to position a rotation disk thereon, an opening defined in a side face defining the recess to communicate with the recess and for oppositely receiving two rollers, and a gap defined to communicate with the opening. The rotation disk has a first disk and a second disk securely connected to the first disk by means of a connection shaft. The second disk has an indent defined in a mediate portion thereof and a channel defined to communicate with both the indent and the opening of the base. The connector of the hose is able to be received in the indent and the hose is able to be wound around the connection shaft.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: February 17, 2004
    Inventor: Dau-Jen Lu