Vacuum cleaner head

Claim 1

A VACUUM-CLEANER HEAD CONNECTABLE WITH THE SUCTION LINE OF A VACUUM CLEANER AND SELECTIVELY OPERABLE FOR VACUUMING AND BEATING CARPETS, RUGS AND LIKE SURFACES TO BE CLEANED, SAID HEAD COMPRISING: A GENERALLY FLAT HOUSING CONNECTABLE WITH SAID SUCTION LINE AND HAVING A BOTTOM FACE JUXTAPOSABLE WITH THE SURFACE TO BE CLEANED; MEANS FORMING A SUCTION NOZZLE IN SAID FACE EXTENDING LONGITUDINALLY THEREALONG TRANSVERSE TO THE DIRECTION OF MOVEMENT OF SAID HEAD; A LONGITUDINALLY EXTENDING CHANNEL FORMED IN SAID FACE AND OPENING THEREAT WHILE BEING TRANSVERSE TO SAID DIRECTION; DUCT MEANS FOR SELECTIVELY CONNECTING SAID NOZZLE AND SAID CHANNEL TO SAID SUCTION LINE FOR INDUCING A FLOW OF AIR ALTERNATIVELY THROUGH SAID NOZZLE AND SAID CHANNEL, SAID DUCT MEANS INCLUDING A PASSAGE FORMED IN SAID HOUSING AND COMMUNICATION WITH SAID CHANNEL AT A LOCATION SPACED FROM THE MOUTH THEREOF AND FROM SAID FACE; A PLURALITY OF ELONGATED FLEXIBLE RESILIENT MEMBERS IN SAID CHANNEL ANCHORED AT THE END THEREOF WHILE SPANNING SAID MOUTH AND HAVING A COLLECTIVE BREADTH AT LEAST EQUAL TO THE WIDTH OF SAID PASSAGE; AT LEAST ONE OF SAID FLEXIBLE MEMBERS UPON ITS MOVEFLEXIBLE MEMBER AND SAID LOCATION FOR INTERCEPTING AT LEAST ONE OF SAID FLEXIBLE MEMBERS UPON ITS MOVEMENT IN THE DIRECTION OF SAID LOCATION FOR PREVENTING JAMMING OF SAID PASSAGE BY SAID FLEXIBLE MEMBERS; AND A COMB MEMBER EXTENDING LONGITUDINALLY ACROSS SAID FACE AND MOVABLE RECEIVED THEREIN, SAID COMB MEMBER HAVING A MULTIPLICITY OF PROJECTIONS ALONG A LOWER LONGITUDINAL EDGE ENGAGEABLE WITH SAID SURFACE FOR LOOSENING RECREMENT THEREON, AND SPRING MEANS IN A ONE-PIECE CONSTRUCTION WITH SAID PROJECTIONS FOR BIASING SAID COMB MEMBER DOWNWARDLY FROM SAID FACE INTO ENGAGEMENT WITH SAID SURFACE, SAID PROJECTIONS CONSTITUTING A SINUOUS SURFACE OF SAID LONGITUDINAL EDGE, SAID COMB MEMBER BEING COMPOSED OF RESILIENT MATERIAL AND BEING OF BOWED CONFIGURATION, SAID SPRING MEANS INCLUDING A PAIR OF SPRING MEMBERS LONGITUDINALLY SPACED APART ALONG SAID COMB MEMBER AND EACH CONSTITUTED BY A PAIR OF ANGULARLY ADJOINING STRUTS DEPENDING FROM THE COMB MEMBER, SAID COMB MEMBER FURTHER HAVING HOOK-LIKE PORTIONS ENGAGEABLE WITH SAID HOUSING FOR RETAINING SAID COMB MEMBER THEREIN.