35results about How to "Airflow limitation" patented technology

The present invention includes an intra-bronchial device, system, and method for providing a therapeutic agent to a patient. A device includes a flow control member for placement in an air passageway communicating with a lung portion, and when deployed in the air passageway inhibits a therapeutic agent distal of the control member from moving proximal of the control member, and includes the therapeutic agent associated with the flow control member. The control member may inhibit movement of the therapeutic agent by limiting airflow, and may include a one-way valve limiting exhalation of air from the lung portion. The control member may include a flexible membrane impervious to air flow, or a separator arranged to inhibit the movement of the therapeutic agent. The control member may include at least one anchor, and the anchor may be releasable from the air passageway for removal of the intra-bronchial device.

A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an outlet of the cyclonic chamber, and establishes a suction airstream that enters said main suction opening, passes through said cyclonic chamber, and passes to an outlet of said suction source. A substantial portion of particulates entrained in the suction airstream are separated therefrom when said suction airstream moves in a cyclonic fashion through the cyclonic chamber. A main filter assembly, preferably including filter medium comprising polytetrafluoroethylene (PTFE), is located in the cyclonic chamber so that a suction airstream moving from the main suction opening to the inlet of said suction source by way of the cyclonic airflow chamber passes through the filter medium thereof after said airstream moves in a cyclonic fashion within the cyclonic airflow chamber to remove residual particulates from the suction airstream before it leaves the cyclonic chamber. A HEPA filter can be provided to filter the suction airstream exhausted through the outlet of the suction source prior to the airstream being discharged from the vacuum.

Livestock insect-removal systems and methods. According to one embodiment, the system may comprise a structure with a defined path for passage of livestock. The system may comprise a container removably attached to the structure and a vacuum device within the container configured to generate a change in pressure within the container. The system may comprise a first duct to expel air from the container and direct air across the path and displace or dislodge insects. The first duct may further comprise a vent to expel bypass air from the first duct. The system may comprise a second duct, positioned along the path to draw air and dislodged insects into the container.

In an embodiment, a connector or connector assembly for attaching a nasal cannula with a gas delivery hose includes a sensor port for a sensor probe positioned near an end of a nasal cannula, which can allow the sensor probe to be placed closer to the patient's nostrils than previous connector parts allowed. In an embodiment, the connector is configured to advantageously allow the nasal cannula to rotate relative to the gas delivery hose, thereby allowing a patient or healthcare provider to untangle or otherwise straighten the hose or the cannula. In an embodiment, the connector assembly is configured to automatically align locking protrusions on a first component with locking recesses on a second component, where insertion of the second component within the first component causes the second component to rotate relative to the first component, thereby aligning the locking protrusions with associated locking recesses.

An air bypass system for a gas turbine inlet filter house having a power augmentation system. The air bypass system may include a duct positioned on the inlet filter house about the power augmentation system and a damper positioned within the duct so as to open and close the duct.

An underwater breathing device, such as a snorkel, may include an exhalation valve. The exhalation valve is configured to produce positive end-expiratory pressure in the airway of a user of the underwater breathing device in order to reduce the overall work of underwater breathing. The exhalation valve includes a plate defining an exhalation port. The exhalation valve also includes a flexible membrane that is sealable against a surface of the plate and is sized and positioned to be capable of sealing the exhalation port. The flexible membrane is configured to have a sealed position in which the flexible membrane seals the exhalation port such that substantially no exhaled air escapes the snorkel. The flexible membrane is also configured to have an unsealed position in which exhaled air escapes the snorkel.

A hair dryer including a blower and a dryer head having a narrow elongated nozzle shaped to generate airflow in the form of a thin blade of air. The hair dryer includes an airflow evening structure functionally coupled to the nozzle that more evenly distribute airflow of the thin blade of air. The airflow evening structure is a sleeve rotatably coupled about the nozzle and includes a plurality of diversely shaped nozzle masks disposed about the sleeve, each shaped to restrict airflow through the nozzle in varying modes.

An underwater breathing device, such as a snorkel, may include an exhalation valve. The exhalation valve is configured to produce positive end-expiratory pressure in the airway of a user of the underwater breathing device in order to reduce the overall work of underwater breathing. The exhalation valve includes a plate defining an exhalation port. The exhalation valve also includes a flexible membrane that is sealable against a surface of the plate and is sized and positioned to be capable of sealing the exhalation port. The flexible membrane is configured to have a sealed position in which the flexible membrane seals the exhalation port such that substantially no exhaled air escapes the snorkel. The flexible membrane is also configured to have an unsealed position in which exhaled air escapes the snorkel.

An axial-flow fan structure is disclosed, having a localized area expansion between the rotor (i.e. front rotating impeller) and stator blades (i.e. rear stationary or fixed blades, sometimes called de-swirl vanes). The area expansion is provided by utilizing an impeller having a (slightly) falling tip contour (FTC).

A treatment device configured to illuminate a surface of a 3D skin surface when positioned adjacent the illuminated surface of the 3D skin surface. The treatment device includes a number of linear light source strips to conformally illuminate the 3D skin surface.

Methods and systems are provided for refurbishing an engine using ionized air. During a service mode, a service technician may stream ionized air from an external ionized air source to an engine cylinder via the engine intake system. Concurrently, the service technician may connect a service tool to a vehicle diagnostics port to relay operator input, the input allowing a vehicle control system to rotate the engine and adjust engine throttle and cams.

The present application is directed to a muting device for muting the sound of musical instruments such as wind instruments, and more particularly, flutes. The muting device is configured to mute the sound of a wind instrument by restricting the airflow through the blowhole of the wind instrument without changing the pitch of the sound produced by the wind instrument. The muting device may restrict the airflow through the blowhole of the wind instrument by means of a woven or knitted mesh fabric placed over the blowhole of the wind instrument.

A paper web drying apparatus is described as comprising a device for controlling an injection of air in a drying pocket of the drying apparatus. The web drying apparatus generally comprises at least three substantially axially parallel rotatable drying cylinders, first and third cylinders being vertically offset from a second cylinder and the web being consecutively trained thereover defining the pocket therebetween. The apparatus may define a traditional pocket, an offset pocket, or other such pocket configurations known in the art. The device comprises an elongated structure longitudinally mounted adjacent and substantially parallel to the first cylinder and between the first and the third cylinders. A first lateral edge of the structure may be positioned proximal to a peripheral surface of the first cylinder thereby defining a gap therewith such that the web trained thereon may travel toward the second cylinder unobstructed by the structure while the structure reduces an inflow of air dragged into the pocket by a motion of the web from the first to the second cylinder.

A tumble dryer is provided with an air closure system. The air closure system may suppress and / or conceal a fire or burning within a tumble dryer. The air closure system may include an air closure assembly including a guide mountable to a portion of the tumble dryer's ventilation system, and a shutter movably coupled to the guide. The air closure system may further include a sensor configured to complete a circuit supplying electricity to an actuator provided at the air closure assembly when the sensor senses a condition indicative of a fire or burning within the tumble dryer. In response, the actuator may release the shutter such that it closes off an opening within the guide and restricts the airflow through the ventilation system, thus suppressing and concealing the fire or burning within the tumble dryer.

This invention relates to foam insulating products, particularly extruded polystyrene foam, containing asphalt as an infrared attuation and process additives for improving the insulating properties and for reducing the manufacturing cost of the foam products.

An air inlet is mounted adjacent to an actuator and an intake manifold. A valve shaft extending from the actuator to the air inlet rotates the inlet valve from an open position to a closed position, or vice versa. The actuator senses revolutions per minute of an engine to control the inlet valve position. When the inlet valve is in the closed position the amount of oxygen reaching the engine is reduced. The restricted airflow through the air inlet helps to reduce engine noise.

A ventilation valve, comprising a cylindrical valve body (1), a gear box (2), a plurality of fan-shaped vanes (3) and a drive device (4), the gear box (2) being arranged in the center of the valve body (1), and a geared mechanism being provided inside the gear box (2). The drive device (4), by means of a geared drive mechanism, cause the vanes (3) to rotate in a same direction, each around its own central shaft; the vanes (3) are arranged within the valve body (1) in a uniform distribution; the geared mechanism comprises a first central gear (23) and a second central gear (24) fitted on a same supporting shaft (25); between the first central gear (23) and the second central gear (24) are provided a plurality of gears, one each of which is arranged at the end of one of said central shafts which extends to within the gear box (2), each of said gears engaging with both said first central gear (23) and said second central gear (24). Also arranged within the valve body (1) is one or a plurality of airflow meters (6), the distance between the central axis of each of said one or plurality of airflow meters (6) and the central axis of the valve body (1) is different. The present ventilation valve precisely controls airflow and is safe and reliable, while featuring improved geared mechanism security and reduced wear and tear, thus prolongs the service life of the ventilation valve.

An autonomous device for image recognition comprising a housing in which a camera block (1) with an image sensor (11) and a process block (2) with at least one process unit (12) are stored, where both of these blocks (1,2) are separated from each other by means of a thermal insulation partition (3), wherein the camera block (1) and the process block (2) are signal-connected by a connecting element (20) and electrically powered, where the camera block (1) has a camera block (1) housing (6) formed by a base (61) provided with ribbing (24) and a cover (8) with an aperture (10) provided with a lens (17) of a camera module (16) with an image sensor (11) which is covered by a lens cover (46) with a lens slit (47), where the lens cover (46) is attached to the camera block base (61) by means of lens cover fastening screws (48), and the process block (2) has a process block (2) housing (7) formed by a base (71) provided with ribbing (24) and a cover (9) and a mounting cap (27), wherein between the housing (6) of the camera block (1) and the housing (7) of the process block (2), a thermal insulation partition (3) provided with an aperture (4) and a pair of thermal insulation inserts (50) is arranged, forming a channel (4b) through which a connecting element (20), that is formed by a cable (37), passes and which connects the printed circuit board (5) to the first heat pump (321) through the printed circuit board connector (39) and to the camera module (16) through the camera module connector (23), wherein a process unit (12) is disposed on the printed circuit board (5) located in the process block (2), and the printed circuit board (5) is further connected using a flexible portion (21) with a fixed expansion portion (22) of the printed circuit board on which a high speed connector (49) is arranged, wherein the printed circuit board (5) is further connected through a first stacking connector (331) and a second stacking connector (332) to the I / O plate (34) which is connected through an I / O connector (35) using the flexible portion (21) of the printed circuit board to the I / O connector plate (36) to which a GPIO connector (18) is connected, where the I / O plate (34) is connected to the supply printed circuit board (31) through a second stacking connector (332) and a third stacking connector (333), which supply printed circuit board is further connected by the cable (37) through a supply connector (38) to a power connector (19), and where a second heat pump (322) is arranged between the process block (2) housing (7) and the printed circuit board (5), and a third heat pump (323) is arranged between the process block (2) housing (7) and the supply printed circuit board (31).