Abstract: A nonreciprocal circuit element including a ferrite assembly which ha a pair of ferrite members and a plurality of central conductors interposed between the ferrite members, and a dielectric substrate which has an earthing electrode formed on one of its faces and a plurality of impedance matching electrodes formed on the other face, and wherein a direct current magnetic field is applied to the ferrite members. The ferrite assembly and the dielectric substrate are stacked such that lead-out portions of the central conductors are, respectively, connected to the impedance matching electrodes, while earthing portions of the central conductors and the earthing electrode are grounded.

Abstract: An attachment for the intake hose of a suction cleaner for dispensing liquid to the surface to be suctioned, near the intake to the suction nozzle. A liquid supply tank is supported near the suction nozzle. A valve dispenses the liquid. In one embodiment, a surface engaging brush or roller communicates with the valve. When the surface engaging element engages the surface, it opens the valve to dispense liquid from the tank to a liquid dispensing bar. A second embodiment uses a float valve which normally closes the communication between the inlet to the valve and the outlet from the valve to the dispenser bar. An additional conduit communicates with the nozzle to supply suction to the float valve, and when the suction inlet to the suction nozzle is partially obstructed, e.g. against the surface being suctioned, this increases the vacuum above the suction nozzle. The suction communicates through the additional conduit to the float valve to open the communication from the valve inlet to the dispenser bar.