Abstract: An apparatus (10) for directing a flow of air to a passenger compartment of a motor vehicle comprises a housing (12) including at least one passage (24) for conveying the flow of air to the passenger compartment. At least one door (26) has a first position for allowing the flow of air into the passage (24) and a second position for preventing the flow of air into the passage (24). The door (26) includes a seal (32) for sealing against the housing (12) when the door (26) is in the second position. The seal (32) includes a main body portion (106) for attaching to the door (26) and a sealing portion (122) for sealing against the housing (12). The sealing portion (122) of the seal (32) includes primary sealing means (124), which extends outwardly of the main body portion (106) of the seal (32) in a first direction, and secondary sealing means (130), which extends outwardly of the main body portion (106) of the seal (32) in a second direction that is different from the first direction.

Abstract: An apparatus (10) for directing a flow of air to a passenger compartment of a motor vehicle comprises a housing (12) including at least one passage (24) for conveying the flow of air to the passenger compartment. At least one door (26) has a first position for allowing the flow of air into the passage (24) and a second position for preventing the flow of air into the passage (24). The door (26) includes a seal (32) for sealing against the housing (12) when the door (26) is in the second position. The seal (32) includes a main body portion (106) for attaching to the door (26) and a sealing portion (122) for sealing against the housing (12). The sealing portion (122) of the seal (32) includes primary sealing means (124), which extends outwardly of the main body portion (106) of the seal (32) in a first direction, and secondary sealing means (130), which extends outwardly of the main body portion (106) of the seal (32) in a second direction that is different from the first direction.

Abstract: A rotary temperature control system for use in controlling the temperature of a blended air stream supplied to a vehicle passenger compartment is combined with a rotary ventilation mode control system in a common housing. The ventilation mode and temperature control systems include manually operable rotary control knobs operatively connected through pull-pull cable systems to gears in the housing that operate a temperature blend door controlling the output temperature of a blended air stream and one or more vent dampers controlling the ventilation mode of the system. A drive connection in the housing includes irregularly shaped gears for producing a predetermined generally non-linear relationship between rotary movement of an input control member and rotary movement of the temperature blend door to produce a generally linear relationship between the rotary movement of the temperature control knob and the temperature of the air stream throughout a major portion of the rotary movement of the control knob.

Abstract: A rotary temperature control system for use in controlling the temperature of a blended air stream supplied to a vehicle passenger compartment includes a manually operable rotary control knob operatively connected with a control pulley that is, in turn, connected through a pull-pull cable system to a vent pulley. The vent pulley operates a blend door that controls the output temperature of a blended air stream. A drive connection between the vent pulley and a drive shaft of the blend door includes non-circular gears for producing a predetermined generally non-linear relationship between rotary movement of the control pulley and rotary movement of the output shaft to produce a generally linear relationship between the rotary movement of the control pulley and the temperature of the air stream throughout a major portion of the rotary movement of the control pulley.