A work machine includes a machine cab and a machine work body. The work body includes an HVAC unit mounted below a floor of the machine cab. The machine cab includes an HVAC duct system configured to move with the machine cab and seal with the HVAC unit of the work body. ...http://www.google.se/patents/US20070145781?utm_source=gb-gplus-sharePatent US20070145781 - Rotatable cab with floor-mounted heating, ventilation and air conditioning
