| 摘要 |
A transmission system for louver type signs wherein the signs consist of a plurality of multiple faced louvers having indicia defined thereon and the side-by-side relationship of the louvers permits pre-selected faces to define a completed image and simultaneous partial rotation of the louvers presents a new visible image, and wherein, each louver is operated by a separate "T" drive bevel gear transmission having an output shaft upon which a louver is mounted operatively connected to a drive shaft perpendicularly related to the output shaft. The drive shafts of adjacent transmissions are interconnected and a plurality of transmissions are simultaneously operated by a single motor drive source. The cost of the transmissions is significantly reduced by the use of a unique bearing support system for the drive and output shafts eliminating the need for separate bearings in that the material of the transmission casing constitutes the shafts' bearing surfaces. |
