Patents by Inventor Allan J. Seefeld

Allan J. Seefeld 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).

  • Device and method for cleaning particulate material
    Patent number: 5562779
    Abstract: A device for renovating synthetic grass playing surfaces which optionally include a layer of particulate material. The device comprises a plenum chamber (10) which directs a fast moving jet of air against the particulate so as to dislodge it and direct the particulate into a manifold (11) which partially surrounds the plenum chamber. The manifold is designed to separate out the fine particles and direct them to a collection area, and to lay the coarse particulate back on the surface. Filtering and collection apparatus is also described.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: October 8, 1996
    Assignee: Synthetic Grass Maintenace Services Pty Ltd.
    Inventors: Allan W. Allaway, Ian Blair, Allan J. Seefeld