Multiface cylindrical bearings for guiding rotation of vertical shafts

Claim 1

IN A MULTIFACE CYLINDRICAL BEARING HAVING AN INNER SURFACE RECEIVING THEREIN AND ROTATIONALLY GUIDING ABOUT A CENTRAL AXIS A VERTICAL CYLINDRICAL SHAFT, COMPRISING: A PLURALITY OF FIRST CYLINDRICAL SURFACES BEING SPACED ALONG THE CIRCUMFERENCE OF THE BEARING INNER SURFACE, HAVING A FIRST RADIUS OF CURVATURE, AND BEING CONCENTRIC WITH RESPECT TO SAID CENTRAL AXIS; A PLURALITY OF SECOND CYLINDRICAL SURFACES BEING CONCAVE WITH RESPECT TO SAID CENTRAL AXIS, EACH OF SAID SURFACES EXTENDING BETWEEN AND ADJOINING TWO ADJACENT ONES OF SAID FIRST CYLINDRICAL SURFACES, HAVING A SECOND RADIUS OF CURVATURE SHORTER THAN SAID FIRST RADIUS OF CURVATURE, AND EACH BEING COMPLETELY RADIALLY OUTWARD OF SAID FIRST RADIUS OF CURVATURE WITH RESPECT TO SAID CENRRAL AXIS; A PLURALITY OF OIL GROOVES, EACH OF THE GROOVES BEING ALONG THE RADIALLY OUTERMOST PORTION OF SAID SECOND CYLINDRICAL SURFACES WITH RESPECT TO SAID CENTRAL AXIS WHEREIN THE IMPROVEMENT COMPRISES THE RATIO OF THE RADIALLY MEASURED DEPTH T OF SAID SECOND CYLINDRICAL SURFACES WITH RESPECT TO SAID FIRST CYLINDRICAL SURFACES TO THE RADIALLY MEASURED CLEARANCE G BETWEEN SAID FIRST CYLINDRICAL SURFACES AND SAID SHAFT, THAT IS T/G IN THE RANGE 2 TO 7 WHEREBY THE DISTRIBUTION OF OIL PRESSURE GENERATED ABOUT THE SHAFT WITHIN THE INNER SURFACE WILL EXHIBIT OPTIMUM LOAD CARRYING CAPACITY.