(under the class definition) Device including, in addition to structure for performing a class-type operation, either (1) means to produce a perceptible (e.g., audible or visual) manifestation of a condition of a part (or all) of the machine or of the work; (2) means to designate a characteristic of the device, the work or the product; (3) means to increase the lighting intensity in the vicinity of the device or the work; or; (4) means to modify light waves to make characteristics of the device, the work or the product more readily discernable to the view of the operative.
(1) Note. The additional structure may be calibrated quantitatively; however, mere calibration of a machine element, not in addition to structure for performing an operation of the class, is not considered proper for this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
116, for a device of this class having provision to receive means for determining and designating a characteristic of the device, work or product.
SEE OR SEARCH CLASS
433, Dentistry, 29, for dental drilling apparatus provided with means to illuminate the work.
