Patent ID: 6481541
Filing Date: 2002-11-19
Classification: F16D,F16H

Abstract:
A lubrication system comprising:a countershaft rotatably mounted in a transmission housing and extending in an axial direction of the transmission housing; a countershaft brake being adapted to apply a brake force to the countershaft; a gear mounted on the countershaft; an oil pool formed in the transmission housing sufficient to immerse part of the gear in the oil pool when the gear does not rotate; a member for obstructing oil splashed up by the rotating gear; and an oil passage for introducing the oil obstructed by the member to the countershaft brake, wherein the countershaft brake includes a hub fixed to a longitudinal end of the countershaft and housed in a brake casing attached to the transmission housing, a plurality of first plates provided on the hub such that they can move in the axial direction of the transmission housing, a plurality of second plates provided on the brake casing such that they are loosely engaged with the plurality of first plates and can move in the axial direction of the transmission housing, and a piston provided in the brake casing such that it can move in the axial direction of the transmission housing for pressing the plurality of first and second plates against each other for tight engagement of first and second plates.