Jerome Swanson - Cannon Falls MN Kenneth Swanson - Apple Valley MN
Assignee:
LaCrosse Sign Co. - Onalaska WI
International Classification:
G09F 1118
US Classification:
40521
Abstract:
A back lit alphanumeric sign module having a printed web which includes opaque and transparent regions that define alphanumeric characters. The web is trained between end plates having illumination cutouts and which support a spring biased take-up-roller, drive roller, a pair of transparent idler rollers and tie rods. A spiral wound spring at the take-up roller continuously tensions the web. A biased latch arm and slot at the take-up and drive rollers define web stop limits. A split, spring biased ratchet collar is provided in manual modules. The split ratchet collar at the manual drive roller provides a one-way geared rotation and cooperates with a pole engaged loop to vary rotation and sign information. A pulse modulated motor controller drive is provide at the electric module. A remote controller at the electronic module provides programmed and operator entered spread spectrum drive signals over a power line carrier circuit to the drive motor to vary sign information.
William Potter, George Johnson, Beverly Williams, Tracy Metcalf, Jim Zirnig, Karen Spracklen, John Schaefer, Colleen Askland, Shirley Colburn, Sandy Battershaw