| 摘要 |
A soccer board game of the type familiarly known as "foosball" has horizontal rods for operating the defense and offense manually. If a player wishes to practice the only option is to place all of the defensive rods in one position, and to leave them in that position while he plays the offensive. This is very unsatisfactory. I propose the electrical control of the defensive rods, so that the defensive set-up can be varied by presenting the offense with a myriad of defenses. This is accomplished by the use of an electric motor and a cam to set the defensive position. Alternatively, a rectangular wave is generated and applied to the defensive rods to change their position as wanted.
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