(under subclass 55) Subject matter wherein the inductor has a housing or casing which is provided with apertures (usually open to the atmosphere) to allow circulation of air over selected surfaces of the contained inductor.
SEE OR SEARCH CLASS
165, Heat Exchange,
128+, for a heat exchange structure having a thermosyphonic flue.
174, Electricity: Conductors and Insulators,
16.1, for a mere housing or casing for an electrical device, where no significant structure of the device is claimed, with means to provide for ventilation of the interior of the casing.
454, Ventilation, appropriate subclasses for miscellaneous ventilating structure such as cowls, hoods and louvers.
