Rotational device for air conditioner flow control

A control device for an air conditioning system having a conduit for containing conditioned air and an aperture formed in a wall of the conduit for releasing the air from the conduit, the control device comprising:

• a housing having a continuous wall defining an opening, said continuous wall having a pair of bearing apertures formed therein;
• a louver assembly having a pair of shafts, each said shaft extending into and generally coaxially with a respective one of said bearing apertures for rotatably mounting said louver assembly in said housing opening;
• and
• at least one O-ring mounted on one of said shafts and frictionally engaging a wall of said respective one of said bearing apertures to resist rotation of said control shaft in said bearing apertures whereby said louver assembly can be retained in any selected one of a plurality of positions relative to said housing to control the flow of air through said opening by rotation of said one shaft and said O-ring together in said one bearing aperture.

A control device for an automotive air conditioning system having a conduit for containing conditioned air and an aperture formed in a wall of the conduit for releasing the air from the conduit, the control device comprising:

• a housing formed of generally parallel upper and lower walls extending between a pair of end walls to define a central opening;
• a louver assembly having a frame formed of generally parallel upper and lower walls extending between a pair of generally parallel end walls;
• said end walls of said housing each having an aperture formed therein, and said end walls of said louver assembly each having a shaft formed thereon, said shafts extending into and generally coaxially with respective ones of said apertures;
• and
• an O-ring mounted on one of said shafts and frictionally engaging a wall of an associated one of said apertures for maintaining said louver assembly in any selected one of a plurality of positions with respect to said housing by rotation of said one shaft and said O-ring together in said one bearing aperture whereby said control opening is partially blocked by said louver assembly.