Outlet socket fitting for central vacuum-cleaning systems

Claim 1

IN A CENTRAL VACUUM SYSTEM, A WALL SOCKET ASSEMBLY FOR USE ON AN APERTURED VERTICAL WALL, SAID ASSEMBLY COMPRISING AN OUTLET FITTING INCLUDING A TRANSVERSE BORE TERMINATING AT ONE END IN AN ENLARGED DIAMETER PORTION FORMING AN ANNULAR SHOULDER THEREAT, SAID OUTLET FITTING INCLUDING AT LEAST ONE SUBSTANTIALLY LONGITUDINAL SLOT ON THE INNER SURFACE THEREOF OPENING INTO THE OTHER END OF SAID BORE AND SAID SLOT CONTINUING WITH A LATERAL SLOTTED PORTION SPACED FROM SAID OTHER END OF SAID BORE FOR DETACHABLY RECEIVING A CONDUIT HAVING AT LEAST ONE LATERAL PIN RECEIVED IN SAID SLOT AND LATERAL SLOTTED PORTION, AT LEAST ONE ANGLE PLATE ADJUSTABLY ATTACHED TO SAID OUTLET FITTING, SAID ANGLE PLATE INCLUDING MEANS FOR MOUNTING IT ON A WALL AND FURTHER INCLUDING A SLOTTED MOUNTING PORTION FOR RECEIVING A FASTENER AND PERMITTING RELATIVE ADJUSTMENT OF SAID OUTLET FITTING WITH RESPECT TO THE WALL UPON WHICH SAID ANGLE PLATE IS MOUNTED, SAID OUTLET FITTING INCLUDING A JOURNAL PORTION DEFINING A PIVOT AXIS DISPOSED ABOVE AND INWARDLY OF THE OTHER END OF SAID BORE, A CLOSURE FLAP PIVOTALLY CONNECTED IN SAID JOURNAL PORTION AND INCLUDING A PLATE PORTION SEALINGLY ENGAGEABLE ON SAID OTHER END OF SAID OUTLET FITTING OPENING, A COVER PLATE SURROUNDING SAID OTHER END OF SAID OUTLET FITTING BORE AND DETACHABLY ENGAGED ON SAID OUTLET FITTING, A SPACING SLEEVE SEALINGLY ENGAGED IN SAID ANNULAR SHOULDER AND PROJECTING AXIALLY FROM SAID OUTLET FITTING, A CONDUIT FITTING INCLUDING AN ORIFICE HAVING AN INTERNAL ANNULAR INCREASED DI-