Abstract: A panel system includes a chassis holding one or more tray arrangements, which are each configured to receive one or more cassettes at two or more bays. The tray arrangements and cassettes cooperate to define a cassette sensor arrangement and a port occupancy sensor arrangement having separate interface points. The cassette sensor arrangement may include electronic memory storing physical layer information about the cassette. All active components of the port occupancy sensor arrangement are disposed on the tray while the electronic memories of the cassette sensor arrangement are stored on the cassettes.

Abstract: A weight-bearing device includes a single wheel, a frame attached to the wheel, and an electric motor attached to the frame. The electric motor is configured to rotate a first gear, connected to a second gear with a chain. The second gear is connected to the wheel. The second gear and the first gear may have a gear ratio of greater than 8:1.

Abstract: A plurality of edges (106–110) of a transparent sheet (112) are adhered to a back (114) of a paper backing (116) to from a clear-front envelope (102). A support flap (104) is attached to the clear-front envelope (102) where the support flap (104) folds away from the clear-front envelope (102) at a fold line (126) and has an edge for resting a horizontal surface. A display item is secured between the paper backing (116) and the transparent sheet (112) and can be displayed in a landscape or portrait position. Postage indicia (1102) on the support flap (104) allows the display item to be mailed as a personalized postcard. Other indicia (1104) may further provide advertising or customize the display device (100).

Abstract: A plurality of edges (106-110) of a transparent sheet (112) are adhered to a back (114) of a paper backing (116) to from a clear-front envelope (102). A support flap (104) is attached to the clear-front envelope (102) where the support flap (104) folds away from the clear-front envelope (102) at a fold line (126) and has an edge for resting a horizontal surface. A display item is secured between the paper backing (116) and the transparent sheet (112) and can be displayed in a landscape or portrait position. Postage indicia (1102) on the support flap (104) allows the display item to be mailed as a personalized postcard. Other indicia (1104) may further provide advertising or customize the display device (100).