Abstract: A temperature door for an air handling system of a heating, ventilating, and air conditioning system includes a first surface defining a sealing perimeter and a pivoting structure coupled to the first surface and defining an axis. The first surface is configured to pivot about the axis in the housing of the air handling system. A sealing lip is disposed about the sealing perimeter of the first surface and is adapted to engage a corresponding sealing surface of the housing of the air handling system. A pivoting of the first surface about the axis from a sealed position causes a progressive disengagement of the sealing lip from the sealing surface beginning in a location proximate the axis while at least a portion of the sealing lip remains engaged with the sealing surface at a location spaced from the axis.

Abstract: A fluid distribution door for use in a heating, ventilating, and air conditioning system includes a main body having a first surface and a second surface. The first surface and the second surface cooperate to form a first surface configuration which intersects with a second surface configuration. Each of the first surface configuration and the second surface configuration is formed by a three-dimensional feature.

Abstract: A fluid distribution door for use in a heating, ventilating, and air conditioning system includes a main body having a first surface and a second surface. The first surface and the second surface cooperate to form a first surface configuration which intersects with a second surface configuration. Each of the first surface configuration and the second surface configuration is formed by a three-dimensional feature.

Abstract: A temperature door for an air handling system of a heating, ventilating, and air conditioning system includes a first surface defining a sealing perimeter and a pivoting structure coupled to the first surface and defining an axis. The first surface is configured to pivot about the axis in the housing of the air handling system. A sealing lip is disposed about the sealing perimeter of the first surface and is adapted to engage a corresponding sealing surface of the housing of the air handling system. A pivoting of the first surface about the axis from a sealed position causes a progressive disengagement of the sealing lip from the sealing surface beginning in a location proximate the axis while at least a portion of the sealing lip remains engaged with the sealing surface at a location spaced from the axis.

Abstract: A gear pair for a motor vehicle climate control system door drive mechanism includes a drive gear and a driven gear. The drive gear and the driven gear cooperate to form a gear pair, wherein the gear pair is constructed so that a gear ratio of the gear pair transitions from a linear gear ratio to a non-linear gear ratio. The non-linear gear ratio may be proportional to an exponential function. The gear pair is applied to linearly control a climate control door rotation speed when there is a need to meet temperature door linearity performance, and is applied to increase the climate control door rotation speed to meet total temperature door rotation time performance.