| 摘要 |
A pushbutton operated mechanism for adjusting the tuning apparatus of a pushbutton type radio receiver, includes a pair of gears, one of which is rotatably mounted on a fixed shaft and the other of which is rotatable on a shaft generally parallel to the shaft of the first gear and movable along a path toward and away therefrom. First and second racks, each engaging a gear, are separated from each other along a path. A pushbutton coupled to the movable gear, when depressed, causes the racks to be moved together along the path toward a fixed marker position therebetween at a preselected setting. A movable control element of the tuning apparatus, also positioned between the racks, is moved thereby to the preselected marker setting in response to the depression of the pushbutton.
|
