Abstract: A portable cuspidor supplied with rinse water and vacuum drainage through ganged flexible hoses has a hollow, enclosed cuspidor cup or bowl provided with a cushioned side wall opening against which facial areas surrounding the mouth of the patient or user are placed for expectorating. Interior rinse water jet streams are so directed and distributed against the interior of the cuspidor cup or bowl that substantially all of the rinse water, together with expectorant, will flow down for withdrawal at a drain orifice at the base of the bowl, no matter at what angle the device is being held for use.

Abstract: A water recirculation system is described wherein the discharge of one or more dental cuspidors is rendered reuseable and continuously used in the operation of a water sealed vacuum pump in a dental vacuum discharge system.