Float valve assembly for a portable vacuum tank

Claim 1

A FLOAT VALVE ASSEMBLY FOR A PORTABLE VACUUM TANK, COMPRISING: AN UPSTANDING PIPE THAT IS MOUNTED IN SAID TANK, THE UPPER END OF SAID PIPE BEING FORMED WITH A VALVE SEAT; A SUPPORT EXTENDING FROM SAID PIPE, SAID SUPPORT HAVING A PAIR OF VERTICAL SIDE WALLS; A PAIR OF HORIZONTALLY ALIGNED CONE SET SCREWS CARRIED BY SAID SIDE WALLS; A PIVOT ASSEMBLY PIVOTALLY CARRIED TO SAID SET SCREWS THAT INCLUDES A SUPPORT BLOCK FORMED WITH A CONED POCKET THAT RECEIVES ONE OF SAID SET SCREWS AND WITH A HORIZONTAL BORE COAXIAL WITH SAID CONE POCKET, SAID BORE OPENING TOWARDS THE OTHER OF SAID SET SCREWS, SAID PIVOT ASSEMBLY ALSO INCLUDILNG A SLEEVE HORIZONTALLY SLIDABLY DISPOSED WITHIN SAID BORE, THE END OF SAID SLEEVE REMOTE FROM SAID FIRST-MENTIONED CONED POCKET BEING FORMED WITH A SECOND CONED POCKET THAT RECEIVES SAID OTHER SET SCREW, AND SAID PIVOT ASSEMBLY FURTHER INCLUDING A COMPRESSION SPRING INTERPOSED BETWEEN SAID SUPPORT BLOCK AND SAID SLEEVE TO CONSTANTLY URGE THEM APART;