Washer and planetary gear set having the same

Details Washer and planetary gear set having the same Washer and planetary gear set having the same

2008-07-15

2008-07-15

Le, David D. (Department: 3681)

Planetary gear transmission systems or components

Planetary gearing or element

C475S159000, C475S348000, C384S368000, C384S420000, C184S006120

Reexamination Certificate

active

07399253

ABSTRACT:
A washer and a planetary gear set having the same, wherein the washer includes a first washer member and a second washer member. The first washer member is formed at a surface thereof with a plurality of first stepped portions each having a radially extending concave structure. The second washer member has a plurality of second stepped portions each having a radially extending convex structure facing the first washer member. As the second stepped portions are inserted into the first stepped portions, respectively, a plurality of oil flow holes are defined between the first stepped portions and the second stepped portions, thereby allowing lubricating oil to pass through the washer in a radial direction. With this configuration, the washer ensures the smooth supply of lubricating oil regardless of the rotating direction of a pinion gear.

REFERENCES:
patent: 1786565 (1930-12-01), Freeman
patent: 4480492 (1984-11-01), Fujioka et al.
patent: 4776237 (1988-10-01), Premiski et al.
patent: 5302160 (1994-04-01), Fujioka
patent: 6789992 (2004-09-01), Horng et al.

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