IP Library › Granted Patent US 7,413,046
Granted Patent B2
US 7,413,046 · App. 11/533,011 · Granted Aug 19, 2008

Snowmobile

Assignee: Yamaha Hatsudoki Kabushiki Kaisha
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Quick Facts
Patent No.
US 7,413,046
App. No.
11/533,011
Granted
Aug 19, 2008
Kind
B2
Abstract

A snowmobile includes an engine room accommodating an engine body, a steering shaft transferring a steering force generated by the steering of a handle to steering skis, and an assist motor accommodated in the engine room and assisting the steering force, wherein the assist motor is mounted to the steering shaft and located ahead of an uppermost portion of the engine body.

Claims (14)

1. A snowmobile comprising:

an engine room accommodating an engine;

a steering shaft arranged to transfer a steering force generated by the steering of a handle to steering skis; and

an assist motor accommodated in the engine room and assisting the steering force; wherein

the assist motor is mounted to the steering shaft and located ahead of an uppermost portion of the engine in a traveling direction of the snowmobile.

2. The snowmobile according to claim 1 , wherein the assist motor is located above the uppermost portion of the engine.

3. The snowmobile according to claim 1 , wherein the engine includes a plurality of cylinders arranged substantially parallel to a width direction of the snowmobile, and the steering shaft is arranged ahead of the engine.

4. The snowmobile according to claim 3 , wherein the axis of the plurality of cylinders extends toward the rear in a slanting direction as viewed from the side of the snowmobile, and the steering shaft extends substantially parallel with the axis of the plurality of cylinders as viewed from the side of the snowmobile.

5. The snowmobile according to claim 1 , further comprising an exhaust pipe connected to the engine and extending to a rear of the snowmobile.

6. The snowmobile according to claim 1 , further comprising an intake unit located between the assist motor and the engine.

7. The snowmobile according to claim 1 , further comprising a cowling defining a front surface of the snowmobile, wherein the cowling has an opening for taking in outside air, and the assist motor is disposed inside the cowling.

8. The snowmobile according to claim 7 , wherein the opening is arranged in a position where at least a portion of the opening overlaps with the assist motor as viewed from a front of the snowmobile.

9. The snowmobile according to claim 7 , further comprising a duct inside the cowling, wherein the duct is connected at a front end to the opening, and a rear end of the duct is directed at the assist motor.

10. The snowmobile according to claim 1 , wherein the engine is a dry sump engine, and the assist motor is disposed above the engine.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 10, 2006
From: OKADA, HIROYUKI; OGURA, KOUTAROU
To: YAMAHA HATSUDOKI KABUSHIKI KAISHA
Reel/Frame 018368/0794 →
Continuity (2)
Provisional Application 6082205600 · Aug 10, 2006
Related Publication 20070284171A1 · Dec 13, 2007