Hose connector or coupling for suction cleaner

Claim 1

IN A SUCTION CLEANER HAVING UPPER AND LOWER CASING SECTIONS AND AN AIR PASSAGE THROUGH SAID UPPER CASING SECTION, THE COMBINATION OF A SPRING HOUSING SECURED TO THE OUTSIDE OF SAID UPPER CASING SECTION AND HAVING AN OUTER WALL PORTION SPACED FROM SAID UPPER CASING SECTION, SAID WALL PORTION HAVING AN OPENING THERETHROUGH ALIGNED WITH SAID PASSAGE, AN INTEGRAL HINGE PORTION DEPENDING FROM SAID HOUSING AND HAVING A PIVOTAL CONNECTION WITH A COOPERATING HINGE PORTION ON SAID LOWER CASING SECTION, AN INVERTED U-SHAPED RESILIENT SPRING MEMBER DISPOSED WITHIN SAID HOUSING AND HAVING A BIGHT PORTION AND A PAIR OF LEG PORTIONS, SUPPORT MEANS LOOSELY SUPPORTING SAID SPRING MEMBER WITH ITS LEG PORTIONS DEPENDING ADJACENT OPPOSITE SIDES OF SAID PASSAGE AND SAID ALIGNED OPENING, A TUBULAR HOSE COUPLING AXIALLY INSERTABLE AT ONE END THEREOF THROUGH SAID OPENING AND SAID PASSAGE, SAID COUPLING HAVING A PAIR OF DIAMETRICALLY SPACED GROOVES IN ITS OUTER SURFACE ADJACENT SAID ONE END THEREOF FOR RECEIVING SAID LEG PORTIONS OF SAID SPRING MEMBER IN ONE ROTARY POSITION OF THE COUPLING WHEREBY TO RELEASABLY RETAIN SAID COUPLING IN SAID OPENING AND SAID PASSAGE, AND CAM MEANS ON SAID COUPLING INTERMEDIATE SAID GROOVES FOR RESILIENTLY SPREADING AND DISENGAGING SAID LEG PORTIONS FROM SAID GROOVES IN RESPONSE TO ROTA-