Including activator or regulator for controller or drive:
(under subclass 25) Apparatus wherein means are provided by which an energy flow or signal is initiated or modified to activate or otherwise regulate a motor or other controller (e.g., valve, solenoid, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
27+, for a condition responsive activator.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers, appropriate subclasses for switch or actuating structure, per se.
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, particularly
518+, for miscellaneous control circuits which can be used for handpieces or dental stands.