Fuel supply control utilizing venting means

Claim 1

A FUEL FILTER COMPRISING A BODY STRUCTURE FORMED WITH AN INLET OPENING AND AN OUTLET OPENING AND A FUEL PASSAGE CONNECTING SAID OPENINGS, A CUP-LIKE CERAMIC FILTER, MEANS SEALING THE LIP OF SAID CUP-LIKE CERAMIC FILTER AROUND THE PERIPHERY OF THE INNER SURFACE OF SAID FUEL PASSAGE, A TUBULAR CONDUIT FORMING A PORTION OF SAID FUEL PASSAGE AHD HAVING ONE END EXTENDING INTO AND ENCLOSED BY SAID CUP-LIKE CERAMIC FILTER, A NORMALLY OPEN VALVE MOUNTED FOR MOVEMENT INTO CONTACT WITH SAID ONE TUBULAR CONDUIT END TO CLOSE SAID FUEL PASSAGE, MEANS WITHIN SAID FUEL PASSAGE RESPONSIVE TO A PREDETERMINED FUEL PRESSURE THEREIN FOR MOVING SAID VALVE INTO A CLOSED POSITION, SAID BODY STRUCTURE INCLUDING A BLEED OUTLET AND BLEED PASSAGE EXTENDING FROM SAID FUEL PASSAGE BETWEEN SAID VALVE AND SAID OUTLET OPENING TO SAID BLEED OUTLET, AND A NORMALLY CLOSED VALVE MEANS CLOSING SAID BLEED PASSAGE AND RESPONSIVE TO FUEL PRESSURE WITHIN SAID OUTLET OPENING GREATER THAN SAID PREDETERMINED PRESSURE TO OPEN SAID BLEED PASSAGE, SAID VALVE MEANS INCLUDING A BYPASS VALVE AND A BIMETALLIC THERMALLY RESPONSIVE SPRING BIASING SAID BYPASS VALVE INTO A BLEED PASSAGE CLOSING POSITION AND RESPONSIVE TO A PREDETERMINED AMBIENT TEMPERATURE TO RELIEVE SAID SPRING BIAS AND PERMIT OPENING OF SAID BLEED PASSAGE BY FUEL PRESSURE.