Device for lubrication of a gear

Details Device for lubrication of a gear Device for lubrication of a gear

2007-05-22

2007-05-22

Ho, Ha (Department: 3681)

Planetary gear transmission systems or components

With lubricaton

Reexamination Certificate

active

11164528

ABSTRACT:
An arrangement for lubrication of a gear including a first gearwheel (402, 602, 702) in engagement with a second gearwheel (404), the teeth of the first gearwheel having an axial extent longer than the entire axial extent of the teeth of the second gearwheel. A first tooth surface of the first gearwheel is in engagement with the teeth of the second gearwheel. A second tooth surface of the first gearwheel (402, 602, 702) constitutes a part in a spline joint together with corresponding internal teeth of a gear element (423, 623, 723, 823). A lubricant duct (429, 629, 729, 829) is arranged so as to conduct lubricant to the first tooth surface. The lubricant duct (429, 629, 729, 829) consists of a space between a tooth tip and a corresponding tooth root in the spline joint. The gear element (423, 623, 723, 823) consists of a coupling ring. The first gearwheel (402, 602, 702) consists of a sun wheel. Both the coupling ring and the sun wheel form part of a range gearbox with planetary gear stages.

REFERENCES:
patent: 6817962 (2004-11-01), Tanikawa
patent: 6855083 (2005-02-01), Wagle et al.
patent: 63-158344 (1988-07-01), None
patent: 6-207650 (1994-07-01), None

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