Planetary gear system
First Claim
Patent Images
1. A planetary gear system, comprising:
- a carrier;
a planet gear defining a central planet axis;
a pin coupling the planet gear to the carrier; and
a bearing disposed between the planet gear and the pin, the bearing comprising an inner race, an outer race and a plurality of rolling elements, each of the rolling elements in contact with the inner race and the outer race,wherein the planet gear has formed therein at least one cooling passage comprising a coolant collection groove for allowing a coolant to pass therethrough to cool the planet gear.
1 Assignment
0 Petitions
Accused Products
Abstract
A planetary gear system is disclosed. The planetary gear system includes a carrier, a planet gear defining a central planet axis, a pin coupling the planet gear to the carrier and a bearing disposed between the planet gear and the pin. The bearing includes a plurality of rolling elements. Each of the rolling elements is in contact with an inner race and an outer race. The planet gear has a formed therein cooling passage for allowing a coolant to pass therethrough to cool the planet gear.
33 Citations
20 Claims
-
1. A planetary gear system, comprising:
-
a carrier; a planet gear defining a central planet axis; a pin coupling the planet gear to the carrier; and a bearing disposed between the planet gear and the pin, the bearing comprising an inner race, an outer race and a plurality of rolling elements, each of the rolling elements in contact with the inner race and the outer race, wherein the planet gear has formed therein at least one cooling passage comprising a coolant collection groove for allowing a coolant to pass therethrough to cool the planet gear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An epicyclic gearbox comprising:
-
a planetary gear system comprising; a carrier; a planet gear defining a central planet axis; a pin coupling the planet gear to the carrier; and a bearing disposed between the planet gear and the pin, the bearing comprising an inner race, an outer race and a plurality of rolling elements, each of the rolling elements in contact with the inner race and the outer race, wherein the planet gear has formed therein at least one cooling passage comprising a coolant collection groove for allowing a coolant to pass therethrough to cool the planet gear; a sun gear rotating about a rotational center shaft; and a ring gear being provided on the radially outer side of the sun gear, wherein the planet gear of the planetary gear system being provided between the sun gear and the ring gear and meshes with the sun gear and the ring gear. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification