Patent ID: 8671843

Claim:
An automatic carriage return for an exhaust removal system having a carriage that is configured to translate in first and second directions along a track tube, the carriage being coupled to an exhaust extraction hose, the exhaust extraction hose being coupled to a vehicle exhaust for directing exhaust from the vehicle out the track tube, the automatic carriage return comprising: a reciprocating drive line spanning along a path adjacent to and substantially parallel with the track tube; an passive engagement catch coupled to the carriage, the engagement catch being engaged to the drive line while the carriage is travelling in the first direction; wherein the drive line is not engaged with the engagement catch or carriage when the carriage is traveling in the second direction such that the carriage moves independently of the drive line when the carriage is traveling in the second direction; and a drive coupled to the drive line, the drive configured to drive motion of the drive line and carriage in the first direction.