Self-aligning antifriction-bearing equipped roller

Claim 1

A SELF-ALIGNING ANTIFRICTION-BEARING-EQUIPPED ROLLER FOR ROLLING ALONG A PATHWAY, SAID ROLLER COMPRISING AN INNER RACE MEMBER HAVING AN EXTERNAL CONVEX SPHERICAL BEARING SURFACE THEREON WITH AN ANNULAR EXTERNAL ANTIFRICTION BEARING ELEMENT CHANNEL THEREAROUND, A COMPOUND OUTER RACE MEMBER INCLUDING A PAIR OF ANNULAR OUTER RACE COMPONENTS COMPOSED OF SINTERED POWDERED MATERIAL SECURED TO ONE ANOTHER IN ABUTTING RELATIONSHIP AND HAVING AN ANNULAR EXTERNAL PATHWAYENGAGING SURFACE THEREON, SAID OUTER RACE MEMBER HAVING IN THE INTERIOR THEREOF AN ANNULAR INTERNAL CONCAVE SPHERICAL BEARING SURFACE DISPOSED IN RELATIVELY-ROCKING MATING ENGAGEMENT WITH SAID EXTERNAL CONVEX SPHERICAL BEARING SURFACE OF SAID INNER RACE MEMBER, SAID OUTER RACE MEMBER ALSO HAVING THEREIN AN ANNULAR INTERNAL ANTIFRICTION BEARING ELEMENT CHANNEL EXTENDING AROUND THE INTERIOR THEREOF IN OPPOSITELY-FACING RELATIONSHIP WITH SAID EXTERNAL CHANNEL, AND MULTIPLE ROLLABLE ANTIFRICTION BEARING ELEMENTS DISPOSED IN AN ANNULAR PATH BETWEEN SAID CHANNELS IN ROLLING ENGAGEMENT WITH THE OPPOSIING SURFACES THEREOF, ONE OF SAID CHANNELS HAVING A WIDTH EXCEEDING THE WIDTH OF SAID ANTIFRICTION BEARING ELEMENTS WHEREBY TO FACILITATE SAID RELATIVE ROCKING ENGAGEMENT.