초록 ▼

A set of simple and economical components is used to transform an existing back lighted sign into a self-propelled scrolling banner display. Only two structural parts are used, and the electro-mechanical components are limited to a step-down transformer, a rectifier circuit, a pair of motors, and a

A set of simple and economical components is used to transform an existing back lighted sign into a self-propelled scrolling banner display. Only two structural parts are used, and the electro-mechanical components are limited to a step-down transformer, a rectifier circuit, a pair of motors, and a switch and voltage step-down diode assembly.

대표청구항 ▼

[ What is claimed is:] [7.]7. The combination of a hexahedral display case, said case including a front panel mounting having a window cut-out, and a pair of parallel and opposite longitudinal walls with a scrolling banner display assembly, wherein said assembly comprises:first and second rails havi

[ What is claimed is:] [7.]7. The combination of a hexahedral display case, said case including a front panel mounting having a window cut-out, and a pair of parallel and opposite longitudinal walls with a scrolling banner display assembly, wherein said assembly comprises:first and second rails having an equal length substantially commensurate with one of said longitudinal walls;means for attaching said rail to said longitudinal walls in parallel opposite positions;said first rail mounting a pair of pintles oriented in a direction perpendicular to said longitudinal wall, said pintles being located proximately to opposite ends of said first rail, and being resiliently and axially biased away from said rail;said second rail mounting a pair of drive units, each in a position opposite and aligned with, one of said pintles;each of said drive units comprising a mounting module, a directionally reversable electrical motor having a pair of forward and reverse terminals, and a gear-down assembly having a drive spindle;a pair of rollers, each having a first axial end shaped and dimensioned to engage one of said pintles, and an opposite second axial end shaped and dimensioned to engage one of said drive spindles;a banner scroll having means at opposite ends for attachment to said rollers;a transformer; anda switch assembly comprising a rectifier, a switch, pair of diodes, and a set of conductors wired to apply a step-down voltage from said transformer to said rectifier, and a rectified power from said rectifier to said motors through said diodes in alternately switchable polarities.