B23Q35/30 - CPC Classification

Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor; Feelers; Feeler units designed for a physical contact with a pattern or a model for control of an electrical or electro-hydraulic copying system

• B23Q35/32 » in which the feeler makes and breaks an electrical contact or contacts, e.g. with brush-type tracers 0
• B23Q35/34 » in which the feeler varies an electrical characteristic in a circuit, e.g. capacity, frequency 0