80 results about "Restricted Airflow" patented technology

An inflatable cushion bag for striking includes an outer wall and an inner wall that is positioned inside and longitudinally with the outer wall looped around the inner wall. A first radial wall is joined to each of and connects between the outer wall and the inner wall at a first end and is sealed so that free airflow is blocked at the first end. A second radial wall is joined to each of and connects between the outer wall and the inner wall at a second end and is sealed so that free airflow is blocked at the second end. At least one intermediate radial wall is placed longitudinally between the first radial wall and the second radial wall and transversely between the outer wall and the inner wall. The intermediate radial wall may have a small opening such as a hole with a diameter less than ½ inches or an equivalent so that the opening allows a slow airflow through the intermediate radial wall for inflating or deflating the bag and, when inflated, restricts airflow through the opening to give a shock absorber effect to make the outer wall an added cushion when punched or kicked.

An electronic component includes a housing having an inlet section, a mid-section, and an outlet section, mounting components for mounting the housing within an electronics cabinet, at least one movable louver positioned in at least one of the inlet section, the mid-section, and the outlet section, an actuator configured to manipulate the at least one movable louver to vary a volume flowrate of airflow through the housing, and a controller configured to operate the actuator to one of substantially maintain an environmental condition change from the inlet to the outlet within a predetermined range and substantially restrict airflow through the housing when the electronic component is in a relatively low operational state.

A smart register is described. For example, one embodiment of the smart register apparatus comprises: a set of dampers which enable or restrict airflow from an heating, ventilation, air conditioning (HVAC) system when opened and closed, respectively; a motor to control the opening and closing of the dampers; a battery to provide power to the motor; and register control logic to determine a threshold temperature based on a desired temperature set by a user and to read a current temperature from a temperature sensor, the control logic to automatically open or close the dampers to enable or restrict airflow from the HVAC system based on differences between the threshold temperature and the current temperature.

A wound treatment system includes a housing. A processor is located in the housing. A pressure monitoring system is coupled to the processor. A power delivery system is located in the housing and coupled to the processor. An oxygen concentrator is located in the housing and coupled to the power delivery system. The oxygen concentrator includes a plurality of oxygen outlets. The processor is configured to receive pressure information from the pressure monitoring system that is indicative of a pressure in a restricted airflow enclosure provided by a dressing and located adjacent a wound site; and use the pressure information to control the power provided from the power delivery system to the oxygen concentrator in order to control an oxygen flow created by the oxygen concentrator and provided through one of the plurality of oxygen outlets to the restricted airflow enclosure.

A seating, including a sling seating, can have adjustable and/or non-adjustable cushions. An occupant of the seating can adjust the thickness and support provided by an adjustable cushion. The adjustable cushion can include an open cell foam in an airtight envelope. The occupant can open a control valve connected to the envelope to let air out of the airtight envelope while the occupant applies external pressure to the open cell foam, which decreases the thickness of the adjustable cushion as the open cell foam compresses. The occupant can close the valve to restrict airflow into and out of the envelope at a desired thickness of the adjustable cushion. The occupant can subsequently open the valve to let air into the envelope while the occupant does not apply external pressure to the open cell foam, which increases the thickness of the adjustable cushion as the open cell foam expands.

A damper assembly includes a housing positionable between refrigerator compartments operable at different temperatures. A damper door is coupled to the housing and is movable between a first position configured to restrict airflow between the refrigerator compartments and a second position configured to allow airflow between the refrigerator compartments. An actuation device is operatively coupled to said damper door. The actuation device is configured to move the damper door between the first position and the second position during an energizing cycle, and the actuation device is configured to be energized intermittently during the energizing cycle.

A control system includes an onboard controller, a location determination system, and a speed sensor. The controller identifies a designated area along a route that includes a downhill section, an airflow restricted area, a banked section, a section to be cleaned, an adverse environmental area, an adverse vehicular condition area, and/or a section where travel is restricted. The designated area is associated with an operating rule that requires the vehicle to travel at least as fast as a lower speed limit. The location determination system monitors actual locations of the vehicle as the vehicle travels along the route. The speed sensor obtains speed data representative of an actual velocity of the vehicle. The controller restricts control of the vehicle such that the actual velocity of the vehicle is at least as fast as the lower speed limit of the designated area when the vehicle is in the designated area.

This application is directed to a fragrance dispenser attachably connected to a fan comprising: a housing having openings defined in the housing; a fragrance reservoir included in the housing for receiving a fragrance medium containing a fragrance; a cover operably associated with the opening for restricting airflow into the fragrance reservoir; and, a cover actuator operably connected to the cover having an open position allowing airflow into and out of the fragrance reservoir for dispensing a fragrance and a closed position for restricting airflow into and out of the fragrance reservoir.

An engine airflow management system includes an inlet portion to receive ambient air and a mass airflow (MAF) sensor to sense mass flow rate of air passed through the inlet portion. The airflow management system includes a throttle body to selectively restrict airflow and a throttle position sensor (TPS) to sense an opening value of the throttle body. The airflow management system includes an intake manifold in fluid connection with the throttle body configured to direct airflow to a number of combustion cylinders. A manifold air pressure (MAP) sensor detects air pressure at the intake manifold. A controller is programmed to monitor signals from each of the MAF sensor, TPS, and the MAP sensor and generate a residual error value based on a difference between a model-based value and a corresponding monitored signal. A response action is based on a trend of at least two residual error values.

An impeller arrangement for location for use with a blower and/or vac device, the impeller being rotatable about an axis of rotation and comprising a base, a shroud and a plurality of blades located therebetween, the shroud comprising an impeller inlet defining a passageway to the plurality of blades, a barrier arrangement located adjacent the impeller inlet to restrict airflow between the impeller and its housing. By providing such an arrangement, inlet losses to the impeller can be reduced when compared to known arrangements. The interaction between these components forms a barrier to bleeding of the airflow away from the inlet, reducing the likelihood of air passing between the impeller and its housing and improving the inlet efficiency of the impeller.

An extendable airflow restriction system is described herein which may be used to treat various disorders by creating expiratory positive airway pressure while providing for patient comfort regardless of the patient's anatomical variances. Such a device may be removably secured within the patient's mouth and may include an extendable member which may project to urge the patient's upper lip towards the nostrils to restrict airflow. Moreover, the restriction device may include one or more sensors to detect the patient's respiration activity such that the device may be actuated to correspond to the patient's exhalation.

An airfoil component having a body having a leading edge and a trailing edge, a ceramic casting insert for making the component and the method for making the component. The component includes an internal cooling passageway and an elongated opening in communication with the internal cooling passageway. The opening is configured with a geometry that provides structural stability during casting and has a cross-section that sufficiently restricts airflow through the opening to provide efficient component operation. The casting insert includes outer edge projections and a web portion corresponding to the geometry of the openings when cast around the insert. The method includes casting the airfoil component around the casting insert and removing the insert to provide the component having the openings.

A device for transmitting engine sound into an interior of a motor vehicle includes a sound transmission line having a first end in acoustic communication with an air intake tract and a second end arranged to direct engine sound towards the motor vehicle interior. A sound transmitting porous media is arranged in-line with said sound transmission line and restricts airflow wherein the porous media such that airflow in the sound transmission line is required to pass through said porous media.

An aircraft design using an air intake structure for reducing drag and assisting aerodynamic control surfaces in controlling the aircraft. The air intake structure comprises an outer skin including a plurality of perforations, a plurality of closing plates for covering corresponding perforations and an actuator operatively connected to the plurality of closing plates. The outer skin creates a chamber between the outer skin and a fuselage of the aircraft and extends to cover engines of the aircraft and adapted to restrict airflow into the engines. The plurality of closing is movable between a closed position covering the corresponding perforations and, an open position, uncovering the corresponding perforations. The actuator is used for positioning the plurality of closing plates between the closed position and the open position. The aircraft design also includes a wing for minimizing an airfoil boundary layer separation and de-icing a leading edge of the wing.

Disclosed is a system and method for decreasing airflow and improving ventilation within a tunnel, such as a railroad tunnel, including a path for movement of a vehicle (e.g., train) therethrough. The system has a plurality of air baffles mounted within the tunnel, each device comprising a body and a mounting device. Each mounting device positions each body inside and along the length of the tunnel between the entrance and the exit. The air baffles are configured to restrict airflow at least in part in a longitudinal direction of the tunnel, thereby increasing a relative difference between a vehicle speed and air speed in a tunnel annulus when the vehicle passes through the tunnel. The restriction (e.g., decrease) of airflow in the tunnel reduces the piston effect resulting from the vehicle or train passing through, thus reducing emissions and heat generated by the locomotives in the tunnel.

A portable aeration device includes a housing having an air chamber in communication with an ambient air source, a supply area, a valve restricting airflow between the air chamber and ambient air source, and a valve restricting airflow between the chamber and supply area. The housing defines an exit in communication with the supply area, the aeration device having a cap selectively covering the housing exit. The aeration device includes a diffuser having a plurality of openings, an output tube extending from the diffuser to a location in communication with the supply area to alternately supply air from the supply area to the diffuser and allow liquid to pass from the diffuser to the supply area. A pump is in communication with the air chamber to force air from the air chamber to the supply area. The aeration device includes a fastener for attaching the housing to a water bottle.

A rotor system of a reactive drive rotary wing maintains rigidity and stiffness and resists slack and backlash by mounting swashplate actuators to a flange rigidly secured to the mast, and may be monolithic therewith. A mast tilt actuator and a mast pivot may secure to the mast flange, with vibration suppressors. A shroud may provide a sealed fluid path for airflow therethrough encircling portions of the rotor hub and restricting airflow between the rotor hub and shroud. A rotor cavity, in fluid communication with blade ducts (hollow portions of the blade spars), and either or both contoured to reduce pressure losses, may assist in temperature control, and may feed into tip jets on the blades.