Wall fitting and control for vacuum cleaning systems

Claim 1

AN OUTLET ASSEMBLY FOR VACUUM CLEANING SYSTEMS COMPRISING, A FACE PLATE ADAPTED TO BE POSITIONED ON A WALL OF AN ENCLOSURE, A BUSHING HAVING A THROUGH BORE WITH AN OPEN END EXPOSED IN SAID ENCLOSURE AND EXTENDING THROUGH THE FACE PLATE AND THE WALL, A VACUUM CONDUIT HAVING AN OPEN END, SAID BUSHING BEING SLIDABLY AND REMOVABLY MOUNTED AT ITS OPPOSITE END IN SAID OPEN END OF THE VACUUM CONDUIT, A RESILIENT GASKET ENCIRCLING SAID BUSHING AT SAID OPEN END OF THE VACUUM CONDUIT, MEANS COMPRESSING SAID RESILIENT GASKET INTO SEALING ENGAGEMENT WITH SAID BUSHING AND VACUUM CONDUIT TO FORM A TIGHT JOINT, A CLOSURE MEMBER MOVABLY MOUNTED ON THE FACE PLATE AND BIASED TOWARD THE OPEN END OF THE BUSHING TO NORMALLY CLOSE SAME, SAID BUSHING HAVING CIRCUMFERENTIALLY SPACED APERTURES IN A WALL THEREOF INTERMEDIATE THE ENDS THEREOF, SWITCH TERMINALS OF AN ELECTRIC CIRCUIT, MEANS MOUNTING A SWITCH TERMINAL IN EACH OF SAID BUSHING APERTURES IN INSULATED RELATION THERETO WHEREBY SAID TERMINALS EXTEND INTO SAID BUSHING BORE IN CIRCUMFERENTIALLY SPACED RELATION, A FLEXIBLE HOSE HAVING AN ELONGATE ELECTRICAL NON-CONDUCTING TUBULAR SLEEVE PORTION TO BE INSERTED INTO THE OPEN END OF SAID BUSHING BORE IN PERIPHERAL ENGAGEMENT THEREWITH TO ESTABLISH FLUID COMMUNICATION WITH SAID CONDUIT, AND A STRIP OF ELECTRICAL CONDUCTING MATERIAL EXTENDING CIRCUMFERENTIALLY AROUND SAID HOSE SLEEVE PORTION IN A POSITION TO ENGAGE SAID SPACED TERMINALS WHEN SAID HOSE SLEEVE PORTION IS IN SAID FLUID COMMUNICATION POSITION IN THE BUSHING TO COMPLETE THE CIRCUIT BETWEEN SAID TERMINALS.