Fluidtight device for a bearing

Claim 1

A SHAFT SEAL CONSTRUCTION COMPRISING A BEARING BOX HAVING A BORE THERETHROUGH ADAPTED TO RECEIVE A SHAFT, SAID BORE HAVING AN ENLARGED PORTION WITH A CONCAVE END WALL, A BEARING MEMBER HAVING A BORE THERETHROUGH ADAPTED TO FIT AROUND THE SHAFT IN SLIDING RELATIONSHIP THEREWITH, SAID BEARING MEMBER HAVING ONE END CONVEX AND MATING WITH THE CONCAVE END WALL OF THE BEARING BOX, SAID BEARING MEMBER HAVING A RECESS IN THE OTHER END THEREOF, A SPRING IN SAID RECESS, A RING HAVING A BORE THERETHROUGH ADAPTED TO FIT AROUND THE SHAFT IN SLIDING REALTIONSHIP THEREWITH, SAID SPRING BEARING AGAINST SAID RING, A ROTOR MEMBER ADAPTED TO BE SECURED TO SAID SHAFT AND ROTATABLE WITHIN THE ENLARGED PORTION OF THE BEARING BOX BORE, SAID ROTOR MEMBER HAVING A RECESS THEREIN INTO WHICH SAID BEARING MEMBER AND SAID RING FIT; SAID RING ABUTTING AGAINST THE END OF SAID RECESS, SEALING RINGS BETWEEN SAID ROTOR MEMBER AND THE PERIPHERAL SURFACES OF SAID BEARING MEMBER AND SAID RING, MEANS SECURING SAID RING AND SAID BEARING MEMBER TO SAID ROTOR AND ALLOWING RELATIVE SLIDING OF SAID BEARING MEMBER RING, RING AND ROTOR, AND MEANS FOR SUPPLYING FLUID MEANS UNDER PRESSURE THROUGH SAID ROTOR AND AGAINST THE FACE OF SAID RING ON THE OPPOSITE END OF THE RING FROM THE END AGAINST WHICH SAID SPRING BEARS, WHEREBY THE SPRING PRESSURE AND THE FLUID PRESSURE COMBINE TO FORCE SAID BEARING MEMBER AGAINST THE END WALL OF SAID BEARING BOX.