Abstract: An air damper assembly for an air duct having an interior wall and an exterior wall is provided. The air damper assembly includes a damper plate having a periphery and multiple teeth spaced at least partially around and extending from the periphery. The multiple teeth vary in length from a maximum to a minimum over a span of approximately 90 degrees around the periphery. The air damper assembly further includes an axle assembly fixedly coupled to the damper plate and rotatably coupled to the air duct. Rotation of the axle assembly causes the damper plate to rotate within the air duct between a fully open position and a fully closed position to increase or decrease a flow of fluid through the air duct.

Abstract: An air damper assembly for an air duct having an interior wall and an exterior wall is provided. The air damper assembly includes a damper plate having a periphery and multiple teeth spaced at least partially around and extending from the periphery. The multiple teeth vary in length from a maximum to a minimum over a span of approximately 90 degrees around the periphery. The air damper assembly further includes an axle assembly fixedly coupled to the damper plate and rotatably coupled to the air duct. Rotation of the axle assembly causes the damper plate to rotate within the air duct between a fully open position and a fully closed position to increase or decrease a flow of fluid through the air duct.

Abstract: A controller for an HVAC system includes processing circuitry configured to perform a volumetric offset control (VOC) scheme based on a flowrate offset setpoint to operate a valve to drive an actual flowrate offset between a supply rate of air entering a space and an exhaust rate of air leaving the space toward the flowrate offset setpoint. In some embodiments, the valve is configured to control the supply rate of air entering the space or the exhaust rate of air leaving the space and to provide sensor data indicating a flowrate therethrough. In some embodiments, the processing circuitry is configured to monitor a pressure of the space to detect a pressure condition and update the flowrate offset setpoint in response to detecting the pressure condition. In some embodiments, the processing circuitry is configured to perform the VOC scheme based on the updated offset flowrate setpoint.

Abstract: An air duct includes a shell, a first annular chamber defined along a circumference of the sidewall and fluidly coupled with an inner volume defined by the shell through multiple first openings, a second annular chamber defined along the circumference of the shell at a longitudinal position downstream of the first annular chamber, and fluidly coupled with the inner volume of the shell through multiple second openings, a first pressure sensing coupler, a second pressure sensing coupler, a first field accessible coupler, and a second field accessible coupler. The first pressure sensing coupler is fluidly coupled with the first annular chamber and the second pressure sensing coupler is fluidly coupled with the second annular chamber for pressure detection. The first and second field accessible couplers are fluidly coupled with the first and second annular chambers for providing pressurized air to the first annular chamber and the second annular chamber.

Abstract: An airflow sensor assembly for an air duct is provided. The airflow sensor assembly includes an air duct having an interior wall and an exterior wall, a high pressure detection device, and a low pressure detection device. The low pressure detection device includes a hollow ring disposed within the interior wall of the air duct. The hollow ring includes an inner periphery portion, an outer periphery portion, and a first set of apertures defined therein. The first set of apertures is spaced around the inner periphery portion of the hollow ring. The airflow sensor assembly further includes a pressure sensor fluidly coupled to the high pressure detection device and the low pressure detection device.

Abstract: An airflow sensor assembly for an air duct is provided. The airflow sensor assembly includes an air duct having an interior wall and an exterior wall, a high pressure detection device, and a low pressure detection device. The low pressure detection device includes a hollow ring disposed within the interior wall of the air duct. The hollow ring includes an inner periphery portion, an outer periphery portion, and a first set of apertures defined therein. The first set of apertures is spaced around the inner periphery portion of the hollow ring. The airflow sensor assembly further includes a pressure sensor fluidly coupled to the high pressure detection device and the low pressure detection device.

Abstract: Systems and/or methods are provided that facilitate surveying media sources in a media entertainment system. An index component can provide an index of a set of available media sources in the media entertainment system. In addition, a selection component can displays the set of available media sources and receive selection requests for a subset of the available media sources. Further, a preview component can display a sample of media generated by the selected subset of media sources prior to active engagement thereof. Moreover, one or more aspects can be implemented in a vehicle entertainment system.

Abstract: A variable capacity screw compressor for use in a refrigeration system is provided. Compressed refrigerant gas from the compressor is expelled into a discharge port in fluid communication with the refrigeration circuit. The volume associated with the discharge port can be periodically varied, allowing the efficiency of the compressor to be varied periodically. The discharge port volume includes a penetration that houses a movable member or plug that permits the volume to be periodically varied. This movable member is accessible from the exterior of the compressor housing to adjust the position of the movable member within the discharge port volume. The movable member may be adjusted to a full open position in which the discharge port volume is maximized, to a full closed position in which the discharge port volume is minimized, and to any position between full open and full closed.

Abstract: An air duct system which mates an air duct attached to the roof of an automotive vehicle and an air duct attached to a nonexposed surface of a headliner is provided. The air duct system is attached to an air supply which delivers directed air and is disposed between an inner surface of the roof and the nonexposed surface of the headliner. The headliner includes an opening into the passenger compartment of the automotive vehicle. The air duct system includes a first air duct and a second air duct. The first air duct is attached to the inner surface of the roof, and the second air duct is attached to the nonexposed surface of the headliner. Upon installation of the headliner to the roof a portal on the first air duct registers with a portal on the second air duct so as to provide an air flow passage between said first air duct and said second air duct.

Abstract: A snap post for use in conjunction with a snap lid to attach a trim ring to an opening of a headliner of an automotive vehicle is provided. The snap post includes an elongated leg extending outwardly from the trim ring. The elongated leg has a barb for engaging with the snap lid disposed on a distal end thereof. A support structure provides the elongated leg with sufficient reinforcement to withstand the stress imposed during the installation of the headliner, yet provides sufficient flexibility for the quick and easy attachment of the trim ring to the opening of the headliner.

Abstract: Systems and/or methods are provided that facilitate surveying media sources in a media entertainment system. An index component can provide an index of a set of available media sources in the media entertainment system. In addition, a selection component can displays the set of available media sources and receive selection requests for a subset of the available media sources. Further, a preview component can display a sample of media generated by the selected subset of media sources prior to active engagement thereof. Moreover, one or more aspects can be implemented in a vehicle entertainment system.

Abstract: A system or method for sensing rotational parameters of a rotating machine. A rotating element is mounted on a shaft of a rotary machine. The rotating element has predetermined magnetic permeability. An insert is disposed on the first rotating element and characterized by a second magnetic permeability different from that of the rotating element. A sensor is mounted opposite the first rotating element and separated from the rotating element by a gap. The target element has an axis substantially parallel with and offset from the axis of the rotating element. The sensor is disposed in substantial alignment with the target element at least once per rotation when the rotating element is rotating. The sensor is configured to generate an output signal in response to a sensed deviation in a magnetic field induced by the rotation of the target element in proximity to the sensor.

Abstract: An air duct outlet includes a housing having a front wall with an opening therein through which air flows. A louver assembly is operably coupled with the housing and includes a first set of louvers pivotally secured within the housing, and a second set of louvers pivotally secured within the housing. A joystick is remotely positioned relative to the front wall opening away from the front wall opening. The joystick is operably coupled with the first and second sets of louvers and is configured to pivot the first and second sets of louvers in response to user movement thereof. The joystick is connected to the first set of louvers via a shaft and is connected to the second set of louvers via multiple interconnected linkages. The linkages are configured to allow the joystick to move the first set of louvers without moving the second set of louvers.

Abstract: A latch device for a cover member includes a box body having at least of a pair of walls and an upside opening, a cover member that is mounted on the box body to enable the upside opening to be opened and closed, a handle member mounted on the cover member such that the handle member may rotate. The handle member includes a pair of claws formed at both ends of the cover member; and latch holes formed in the walls of the box body such that the pair of claws are engaged with the latch holes.

Abstract: The compass system of the present invention utilizes an improved calibration routine in which a processing circuit of the compass recalibrates the compass each time three data points are obtained from a magnetic field sensor that meet predetermined criteria. One such criterion is that the three data points define corners of a triangle that is substantially non-obtuse. When three data points have been obtained that define a triangle meeting this criterion, the processing circuit calculates a center point for a circle upon which all three data points lie by solving the equation x2+y2+Ax+By+C=0 for A, B, and C, using the coordinate values (x,y) for the three data points and defining the center point as (−A/2, −B/2).

Abstract: A method and apparatus is provided for controlling an energy storage medium connected to an environmental control system that is providing environmental conditioning. The controller includes an energy pricing data structure for storing a real-time energy pricing profile indicative of energy rates corresponding to time-varying production costs of energy. The controller also includes a storage medium containing rules that approximate optimal control trajectories of an energy cost function that is dependent upon the real-time energy pricing profile, with the rules governing the operation of the energy storage medium. In addition, the controller has an engine for generating a storage medium control signal based upon the real-time energy pricing profile and the rules whereby the energy storage medium is controlled with the storage medium control signal in order to minimize energy costs associated with environmental control system.

Abstract: A spring module having a shaft movable in first and second directions and a biasing element for urging the shaft into a normal position upon loss of power. The spring module also includes motion limiting means for limiting the deenergization of the biasing element and a speed reduction apparatus intercoupling the motion limiting means and the shaft. The biasing element is energized upon movement of the shaft in the second direction and deenergized by shaft movement in the first direction. Similarly, the motion limiting means are coupled to the shaft for movement in third and fourth directions. The speed reduction apparatus moves the motion limiting means at a slower rate in the third and fourth directions than the shaft moves in the first and second directions.