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US 5,854,524 AGranted
Motor with semi-spherical bearing
AssigneeSamsung Electronics Co., Ltd.
InventorChang-Woo Lee
Life of this patent
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Abstract
Disclosed is a motor including a stator, a rotor cooperating with the stator, a rotating shaft rotating with the rotor, the rotating shaft being provided in its bottom with a receiving space, and a semi-spherical bearing disposed in the receiving space of the rotating shaft. The semi-spherical bearing is truncated to define a planar portion and part of the receiving space is defined by a surface corresponding to the planar portion. The planar portion is provided with a plurality of grooves formed in a spiral-shape to allow for suction of air for smooth rotation.
Claims2
A motor comprising:
- a stator;
- a rotor cooperating with the stator;
- a rotating shaft rotating with the rotor, the rotating shaft including a downwardly facing bottom surface in which is formed a receiving space having a downwardly facing first planar surface;
- and
- a semi-spherical bearing disposed in the receiving space of the rotating shaft, wherein the semi-spherical bearing includes a side surface forming a segment of a spherical surface, and a second planar surface intersecting the spherical surface segment to define a truncation of that spherical surface segment, the second planar surface opposing the first planar surface and including a plurality of grooves, each arranged in a spiral shape.
2 more elements
Dependencies are inferred from the claim text.