Patents by Inventor Juan A. Sard

Juan A. Sard 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: 4358861
    Abstract: An implement for dislodging lumps of matter clogging a drainpipe comprises a long handle with a resilient cup attached to its lower end, the cup having several slits that extend from its rim down to form a plurality of petal-shaped leaves which yield inward when the cup is thrust from above into the pipe but which hug the pipe wall on being pulled up. On being vertically reciprocated inside the drainpipe, the cup thus acts as a pump drawing up water and dissolving the obstruction.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: November 16, 1982
    Inventor: Juan A. Sard