Patents by Inventor Albert C. Hartland

Albert C. Hartland 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: 4606543
    Abstract: A practice tennis court for practicing serving the tennis balls consists of the complete forward part of a tennis court back to the net and only the service area beyond the net. Behind the service area is an end net or other backstop to stop the balls without rebounding. At the end of the court behind the user, there is a continuous rake extending across the court for sweeping used balls to the back of the service area and beyond where the balls are swept into a trough extending from side to side to discharge the spent balls to a side collection point or through a center collection outlet for discharging balls to a center collection point or to a ball projecting machine. As needed, the rake is moved to sweep the spent balls from the forward portion of the court under the net and across the service end of the court and into the trough for removal. An alternate embodiment uses the same ball collection system on a full size court with a ball projector for practicing ball return.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: August 19, 1986
    Inventor: Albert C. Hartland
  • Patent number: 4456252
    Abstract: A practice tennis court for practicing serving the tennis balls consists of the complete forward or receiving part of a tennis court back to the net and only the service area beyond the net. Immediately behind the service area is an end net or other backstop to stop the balls without rebounding. At the net, there is a continuous rake extending across the court for sweeping used balls to the back of the service area. At the rear end of the service area adjacent to the collection net is a trough with an endless belt running from side to side to remove the spent balls to a collection point. At the end of use of the court or after play of a selected number of balls, the rake is moved from the net area to sweep the spent balls underneath the collection net and into the trough for removal. A preferred arrangement would provide several of these courts side by side with the collection trough and belt extending across all of the practice courts.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: June 26, 1984
    Inventor: Albert C. Hartland