Lubricating system for cooling fans

Details Lubricating system for cooling fans Lubricating system for cooling fans

1994-07-29

1995-08-15

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between shaft or shaft sleeve and...

Seal

415229, 277 67, 277133, 384279, 384286, F04D 2912

Patent

active

054413869

ABSTRACT:
A lubricating system for cooling fans is provided and mainly consists of a self-lubricating bearing, an oil retaining cap, and an oil retaining ring. The oil retaining ring has a central hole, an inner portion adjacent to the central hole and having a round cross section, and an outer flange portion integrally extended from the inner portion and having a concavo-concave cross section. The oil retaining cap is bowl-shaped and has a central opening, an inner convex portion, and an outer concave portion. The self-lubricating bearing has two end surfaces each of them being provided with a plurality of shallow bevel grooves inclining toward an axially extended shaft hole of the bearing, and an annular recess formed at a middle section of the shaft hole. With these arrangements, lubricant being sucked and jetted from the self-lubricating bearing during the rotation of the locating shaft of the cooling fan relative to the self-lubricating bearing can be reduced, that is, the oil loss of the self-lubricating bearing can be minimized and the usable life of the cooling fan can be prolonged due to smoother rotation of the locating shaft thereof.

REFERENCES:
patent: 3703221 (1972-11-01), Merkle et al.
patent: 4558960 (1985-12-01), Lehtinen et al.

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