Furniture caddy carrier

Claim 1

IN A FURNITURE CADDY CARRIER, THE COMBINATION OF A CASTER BODY HAVING A FIXED CYLINDRICAL HUB, ROTATABLY MOUNTED UPON A SUBSTANTIALLY CYLINDRICAL STEM, ADAPTED TO BE MOUNTED IN A SOCKET, IN A LEG OF AN ARTICLE OF FURNITURE, THE SAID STEM BEING ROTATABLY MOUNTED IN SAID HUB, BY MEANS OF AN UPPER AND LOWER BALL BEARING ASSEMBLY, MOUNTED IN UPPER AND LOWER RACES, EACH HAVING A PLURALITY OF BALLS, THE BALLS ENGAGING A CYLINDRICAL PORTION OF SAID STEM, EACH RACE BEING ENGAGED IN AN ANNULAR ENLARGEMENT, IN CYLINDRICAL BORE IN SAID HUB, THE BALLS BEARING AGAINST AN ANNULAR WASHER, WHICH ENGAGES A SECOND WASHER, WHICH IS ENGAGED BY THE RIVETED END OF SAID STEM, SAID STEM HAVING BALLS ALSO AT THE UPPER END OF THE STEM, BEARING AGAINST AN ANNULAR SHOULDER ON THE STEM, SAID SHOULDER HAVING AN INNER CIRCULAR CURVATURE FITTING AGAINST THE BALLS, THE SAID CARRIER BEING OF GENERALLY HALF-SPHERICAL SHAPE ON ITS EXTERIOR, AND INTEGRALLY JOINED TO SAID HUB, CENTRALLY LOCATED ON THE UPPER END OF THE CARRIER, AND THE LOWER END OF THE CARRIER HAVING AN OUTWARDLY PROJECTING ANNULAR SHOULDER FOR RETAINING A COVER, WHICH SNAPS ON OR OFF THE CARRIER, THE SAID CARRIER BEING GENERALLY HOLLOW, EXCEPT FOR REINFORCING RIBS, TWO OF SAID RIBS BEING FORMED WITH HALF CYLINDRICAL BEARING SOCKETS FOR RECEIVING A SHAFT, A SINGLE STUB SHAFT OF CYLINDRICAL FORM, SNAPPING INTO OR OUT OF SAID BEARINGS, SAID SHAFT HAVING PLANE ENDS, ENGAGING THE INNER SIDES OF A PAIR OF DOWNWARDLY PROJECTING RIBS, TO RESIST END THRUST ON SAID SHAFT, THE SAID SHAFT SUPPORTING A PAIR OF OPPOSITELY TURNED ROLLERS, EACH ROLLER HAVING A HOLLOW INTERIOR, AND A CYLINDRICAL INNER END PORTION, AND CONICAL OUTER END PORTION, INTEGRALLY MOUNTED ON A CYLINDRICAL BEARING WITH SAID BEARINGS AGAINST EACH OTHER AND AGAINST THE INSIDE OF PROJECTING RIBS, AND EACH BEARING HAVING A CYLINDRICAL BORE FOR RECEIVING SAID SHAFT, THE SAID CASTER ROTATING AROUND ON ITS OWN AXIS WITHOUT OSCILLATION, AND BEING SYMMETRICAL ABOVE ITS OWN CENTER OF GRAVITY RELATIVE TO ITS OWN AXIS.