Tool for bleeding hydraulic brakes

Claim 1

A TOOL FOR BLEEDING AUTOMOTIVE HYDRAILIC BRAKES AT THE ROTARY VALVE WHEEL CYLINDER FITTINGS, SAID FITTINGS BEING OF THE TYPE HAVING A SCREW-THREADED VALVE MEMBER WITH A POLYGONAL NUT FOR OPERATING THE VALVE AND A NIPPLE EXTENDING FROM THE VALVE MEMBER THROUGH WHICH HYDRAULIC FLUID IS BLED WHEN THE VALVE IS SCREWED OPEN, COMPRISING, IN COMBINATION A TUBULAR BODY PORTION ADAPTED AT ONE END TO FIT OVER AND ENGAGE SAID POLYGONAL NUT OF SAID VALVE MEMBER FOR ENGAGEMENT WITH THE FITTING FOR UNITARY ROTATIONAL MOTION THEREWITH, A HANDLE FIXED WITH RESPECT TO SAID BODY PORTION TO FACILITATE TURNING SAID BODY PORTION FOR OPENING AND CLOSING THE VALVE FITTING, SAID HANDLE INCLUDING FLUID DRAINAGE MEANS COMMUNICATING WITH SAID TUBULAR BODY PORTION FOR THE DRAINAGE OF HYDRAULIC FLUID EXPELLED THROUGH SAID NIPPLE WHEN SAID VALVE IS SCREWED OPEN, AND A CHECK VALVE IN SAID BODY PORTION FOR SEALING OFF THE TIP END OF AN ENGAGED FITTING TO PREVENT THE DRAWING IN OF AIR WHEN THE VALVE FITTING IS IN OPEN CONDITION, SAID HANDLE PORTION HAVING A CROSS-BAR SECURED TO THE OUTER END THEREOF, AND SAID FLUID DRAINAGE MEANS COMPRISING PASSAGEWAYS IN SAID HANDLE PORTION AND SAID CROSSBAR.