One-piece vent and exhaust door for an air conditioner

In a room air conditioner of the type having a partition dividing indoor and outdoor sections and having vent and exhaust openings for exhausting air into the outdoor section and for venting outdoor air into the indoor section, said vent opening and said exhaust opening being in vertically spaced relationship with one another in a substantially planar wall section of said partition, an improved control mechanism comprising:

• a combination vent and exhaust door mounted on said partition in the outdoor section, said door comprising a substantially planar wall configured to be mounted to said partition in overlying relation to said vent openings and said exhaust opening, said door being configured to be selectively operable to,
• a first position wherein a first vertically extending section of said wall overlies said vent and said exhaust openings, whereby said vent opening is closed and said exhaust opening is open;
• a second position wherein a second vertically extending section of said wall overlies said vent and said exhaust openings, whereby said vent opening is closed and said exhaust opening is closed;
• and
• a third position wherein a third vertically extending section of said wall overlies said vent and said exhaust openings, whereby said vent opening is open and said exhaust opening is closed;
• and
• an actuator mechanism mechanically linked to said combination door for selectively operating said door to each of said three positions.