| 摘要 |
A motor driven panoramic mounting for cameras which provides an automatic pan range and the ability to go beyond the automatic range under manual control. The automatic mode is restarted regardless of the position of the camera at the restart. Four mechanical actuators are used which move a star shaped cam that turns another cam upon which a reversing switch actuator rides. The reversing switch cam has a central flat positioned within the movement differential zone of the limit switch so that it remains in its last condition due to hysteresis, whereas the outer end flats actuate the switch to reverse the camera motion.
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