Patent ID: 8919479

Claim:
A vehicle including: a chassis; a traction device adapted to contact the ground and propel the chassis; a first motor supported by the chassis; a transmission including a transmission housing and a member positioned in the housing, the transmission being adapted to selectively transfer power from the first motor to the traction device, the transmission having at least one engaged state in which drive power is transferred from the first motor to the traction device to propel the chassis in a substantially forward direction and the transmission having at least one disengaged state preventing drive power from being transferred from the first motor to the traction device; the member being configured to selectively block the transmission from moving from the disengaged state; and a second motor supported by the chassis that powers the traction device to propel the chassis in the substantially rearward direction at a first selected time and powers the traction device to propel the chassis in the substantially forward direction at a second selected time when the member retains the transmission in the disengaged state.