Lucas Poppinga 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).
Abstract: A pull cart comprising a frame (H, 12, 13, 14), a flexible carrier structure (20) connected to the frame, and a suspension (30, 31) connected to the frame. The frame comprises a first (11) and a second (12) substantially U-shaped frame part. The suspension comprises a first suspension part (30) connected to the first frame part and a second suspension part (31) connected to second frame part. The first frame part can hinge relative to at least the second frame part about an axis (3) extending substantially parallel to the bottom of its U-shape. In a folded-out operative condition, on the one side, the suspension is connected to the frame such that forces introduced through the first and second suspension parts force the first and second frame parts apart, and, on the other side, the flexible carrier structure connects the first and second U-shaped frame parts such that the first and second frame parts are prevented from pivoting beyond said folded-out position.
Type:
Grant
Filed:
September 7, 2005
Date of Patent:
June 16, 2009
Assignee:
Celter B.V.
Inventors:
Lucas Poppinga, Cornelis Albert Maijers
Abstract: A pull cart comprising a frame (H, 12, 13, 14), a flexible carrier structure (20) connected to the frame, and a suspension (30, 31) connected to the frame. The frame comprises a first (11) and a second (12) substantially U-shaped frame part. The suspension comprises a first suspension part (30) connected to the first frame part and a second suspension part (31) connected to the second frame part. The first frame part can hinge relative to at least the second frame part about an axis (3) extending substantially parallel to the bottom of its U-shape. In a folded-out operative condition, on the one side, the suspension is connected to the frame such that forces introduced through the first and second suspension parts force the first and second frame parts apart, and, on the other side, the flexible carrier structure connects the first and second U-shaped frame parts such that the first and second frame parts are prevented from pivoting beyond said folded-out position.
Type:
Application
Filed:
September 7, 2005
Publication date:
September 11, 2008
Inventors:
Lucas Poppinga, Cornelis Albert Maijers