Motor having bearing chambers in which the oil is retained by meniscus forces

Claim 1

A LUBRICATED MOTOR INCLUDING, IN COMBINATION: (A) A COLLAR HAVING A FIRST END AND A SECOND END, (I) SAID COLLAR HAVING A CENTRAL BEARING PORTION WITH A LONGITUDINAL APERTURE THERETHROUGH, (II) SAID CENTRAL BEARING PORTION HAVING A FIRST END APPROACHING THE FIRST END OF SAID COLLAR WITHIN SAID COLLAR TO DEFINE A FIRST LUBRICANT-RECEIVING CHAMBER BETWEEN THE FIRST END OF SAID COLLAR AND THE FIRST END OF THE BEARING PORTION THEREOF, (III) SAID CENTRAL BEARING PORTION HAVING A SECOND END PROJECTING BEYOND THE SECOND END OF SAID COLLAR, (B) A SHAFT ROTATABLY MOUNTED IN THE LONGITUDINAL APERTURE IN SAID BEARING PORTION, (I) ONE END OF SAID SHAFT EXTENDING THROUGH THE FIRST END OF SAID BEARING PORTION INTO SAID FIRST CHAMBER, AND (C) A ROTOR ELEMENT SECURED TO THE OTHER END OF SAID SHAFT, (I) SAID ROTOR ELEMENT BEING SECURED TO SAID SHAFT BEYOND THE SECOND END OF SAID BEARING PORTION, (II) SAID ROTOR ELEMENT INCLUDING A CENTRAL ANNULAR PROJECTION EXTENDING ALONG A PART OF THE PROJECTING BEARING PORTION IN PARALLELISM THERETO AND BEING SPACED THEREFROM TO DEFINE A SECOND LUBRICANT-RECEIVING CHAMBER.