초록

A cylindrical display for bus scheduling and the like including a number of semi-cylindrical plastic sections and suitable retaining means for securing the various sections into a unified whole.

대표청구항 ▼

A display apparatus comprising: first, second and third concentric layers, the first layer being substantially transparent, the second layer bearing information; said first layer including first and second half cylinders; said third layer including first and second pairs of half cylinders; said seco

A display apparatus comprising: first, second and third concentric layers, the first layer being substantially transparent, the second layer bearing information; said first layer including first and second half cylinders; said third layer including first and second pairs of half cylinders; said second layer including first and second display segments; a retainer ring means having a slot therein for receiving said first and second pairs of half cylinders and said first and second display segments; first retainer means having a cylindrical, substantially U-shaped channel therein for enclosing said first, second, and third, concentric layers at one end thereof; second retainer means having a cylindrical, substantially U-shaped channel therein for enclosing said first, second, and third, concentric layers at the opposite end thereof; means for fastening said first and second retainer means to said first, second, and third concentric layers;