| 摘要 |
A dental tubing and cable retraction apparatus is provided to selectively retract and release dental tubing and cabling from a cabinet when not in use, to a work site when in use. The apparatus comprises a single acting pneumatic cylinder, a cylinder rod, an actuator arm connector, an actuator arm and a pneumatic actuator switch. When the cylinder is disconnected from a source of pneumatic pressure, the cylinder rod is freely moving axially within the cylinder; when the cylinder is actuated by being connected to a source of pneumatic pressure, the cylinder rod is extended from the cylinder. The first end of the actuator arm is pivotally connected to the actuator arm connector at the outer end of the cylinder rod. A guide loop is pivotally attached to the second end of the actuator arm, and the dental tubing or cabling is fed through the guide loop so as to be retracted when the cylinder is actuated.
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