Patents by Inventor Henry Diener

Henry Diener 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: 4541644
    Abstract: A manual utility cart including a frame having spaced cargo retaining portions and a lower portion. An axle journaled in the lower portion of said frame journals a first set of wheels. A second set of wheels is journaled on an axle spaced from and supported by said first axle and is shiftable about the first axle between a retracted position and a frame supporting position to raise the first set of wheels from a surface. A cover overlies both sets of wheels to support a cargo within the frame.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: September 17, 1985
    Inventor: Henry Diener
  • Patent number: 4531752
    Abstract: A cart including a detachable carrier for moving firewood from a stockpile to a fireplace within a living quarter. The cart includes large wheels for movement over rough terrain while the cart is loaded and a set of smaller wheels for movement of the cart within buildings. The cart also includes a stair climbing apparatus to enable pulling a loaded cart up a flight of stairs. In one embodiment the smaller wheels are shiftable between a raised and a lowered position for selected usage upon operation of a linkage. In a second embodiment the smaller wheels are journaled on the detachable carrier.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: July 30, 1985
    Inventor: Henry Diener