| 摘要 |
An improved control system for hand-held appliances, in particular but not exclusively dental instruments is disclosed. The basic features of the improved control system are a closed or sealed enclosure or container to be mounted on a part of the appliance, preferably on the exterior surface of a handle portion thereof. The enclosure contains a deformable working medium body such as a fluid body which is adapted to effect actuation, operation or control of an actuatable device associated with the appliance. The actuatable device may be a regulator, a transducer or a motor. The control system is an indirectly acting type in which the working medium is displaced by locally compressing the enclosure. This displacement is used to move or operate a movable wall part of the enclosure which, in turn, operates a transducer or regulator unit in response to the degree of compression of the enclosure. The transducer or regulator unit is connected to an external circuit for changing specific characteristics or properties thereof.
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