(under subclass 220) Subject matter wherein electrical connection is made or broken by the buoyancy of a float located in the conductive liquid. Whenever the liquid rises or falls, the float carried by the liquid is moved into contact opening or closing position. The float itself may constitute the contact, or it may carry a contact thereon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
190, for fluid-level switching devices that do not require a float.
