Abstract: An air outlet nozzle of a heating and/or air-conditioning system of a vehicle is provided. It has a displacer which is connected to a nozzle mouth element mounted displaceably in the nozzle housing. In order, with as little structural space as possible and as little flow losses as possible, to be able to control the diffusivity of the air jet emerging from the air outlet nozzle, the flow resistance and the axial position of the displacer can be adjusted.

Abstract: Apparatus for providing airflow within a vehicle. A first housing portion is mounted over a vehicle vent which defines an internal plenum dimensioned to receive the manually adjustable vent handle. A second adjacent plenum is defined by a second housing portion which extends to a fan port at which are mounted one or more battery powered electric motor driven fans. These fans are mounted pivotally as is the mount upon which they are supported. The apparatus may employ Pelfier devices for interior air temperature enhancements. One heatsink of these thermal devices is located within that plenum communicating with ambient or outside air, while the oppositely disposed interior air treatment heatsink is located within an adjacent forwardly positioned plenum. A low battery detector and annunciator assures maintenance of the vehicle battery power supply.

Abstract: An improved HVAC control method immediately closes an air inlet valve to provide full cabin air recirculation when an outside air quality sensor detects polluted air, and thereafter progressively re-opens the air inlet valve at a determined rate when the air quality sensor detects unpolluted air. Preferably, the air quality sensor quantifies the pollution level of the outside air, and the opening rate of the air inlet valve is determined based on the detected pollution level. Following a high level of detected air pollution, the valve is re-opened at a relatively slow rate, and following a low level of detected air pollution, the valve is re-opened at a relatively fast rate.

Abstract: The invention described herein is a passive air ventilation system for automobile interior heat. The passenger compartment interfaces with short air ducts which open when the interior reaches a certain threshold temperature. The other end of the ducts interfaces with the exterior in places which are not susceptible to rainwater seepage.

Abstract: A solar powered fresh air vehicle ventilation system is disclosed. This invention relates to reducing the temperature of the interior of a vehicle parked in the sun. The embodiment of the invention includes a heating ventilation air conditioning blower/vacuum including a centrifugal fan driven by an electric motor. The electric motor is powered by photovoltaic cells. A temperature sensor and controller may activate the system An exhauster/intake vent allows the egress and ingress of fresh air into the vehicle's interior.

Abstract: In an inside/outside air switching device, a rotary door includes a rotation shaft, a periphery wall rotating about the rotation shaft, and side plates connecting between the ends of the periphery wall and the rotation shaft. The rotary door is supported in a case for opening and closing an inside air introduction port and an outside air introduction port of the case. When the door partially opens the inside air introduction port and mainly opens the outside air introduction port in an air mixing mode, the periphery wall projects toward the outside air introduction port by a predetermined distance. The projected portion of the periphery wall is covered with a cover member disposed on a cowl.

Abstract: The air conditioning case (11) includes: a right and a left case body (112, 111) made of resin; and a partitioning plate (113) made of metal, and the partitioning plate (113) is a partitioning portion for partitioning the face blowout opening portion (15) and the defroster blowout opening portion (16) which are formed into one opening portion by the right and the left case body (112, 111). Accordingly, compared with the partitioning portion formed integrally with the right and the left case body, no dividing face is formed at the center, and rigidity can be enhanced. Due to the above structure, it is difficult for the partitioning portion to be deformed, and the partitioning portion seldom interferes with the blowout mode door (22).

Abstract: A vehicle air conditioning apparatus for a vehicle comprises an air conditioning unit for conditioning air in a passenger compartment of a vehicle. The air conditioning unit has an air conditioning case forming an air passage with at least one sidewall. The sidewall of the air conditioning case is divided into a plurality of partial sidewalls, the thicknesses of which are different, so as to restrain vibration of the air conditioning case. The air conditioning apparatus further characterized in that the air conditioning case is installed at one of a front part and a rear part of the passenger compartment of the vehicle. The thicknesses of adjoining two of the partial sidewalls are different correspondingly to vibration restriction performance of the sidewall of the air conditioning case.

Abstract: A vehicle interior structure includes an air vent wall. The air vent wall has a nonpermeable layer, a nonpermeable surface layer and a permeable layer. The permeable layer has a three-dimensional net construction and is disposed between the nonpermeable layer and the nonpermeable surface layer. The permeable layer has two welded nonpermeable portions, which are extended linearly. An air passage is formed between the welded nonpermeable portions. The vehicle interior structure is applied to a vehicle temperature control system including an air conditioning unit and an air blower unit. The interior of the vehicle is ventilated through the air passage of the air vent wall.

Abstract: In an initial stage of a cool down operation of a vehicle air conditioner, a rapid cooling operation is performed while cool air is directly blown to a passenger from direct air outlets. In a later stage of the cool down operation of the vehicle air conditioner, a temperature of an inner wall portion of a passenger compartment is reduced while cool air is indirectly supplied to the passenger of the passenger compartment from the indirect air outlet. Accordingly, cool air can be locally blown to the passenger in the initial stage, and cool air can be supplied to the entire passenger compartment while restricting an adverse effect due to heat radiation of the inner wall portion in the later stage. Thus, operation performance of the air conditioner can be improved while comfortable air conditioning feeling can be given to the passenger in the passenger compartment.

Abstract: The invention described herein is a passive air ventillation system for automobile interior heat. The passenger compartment interfaces with short air ducts which open when the interior reaches a certain threshold temperature. The other end of the ducts interfaces with the exterior in places which are not susceptible to rainwater seepage.

Abstract: Apparatus for providing airflow within a vehicle. A first housing portion is mounted over a vehicle vent which defines an internal plenum dimensioned to receive the manually adjustable vent handle. A second adjacent plenum is defined by a second housing portion which extends to a fan port at which are mounted one or more battery powered electric motor driven fans. These fans are mounted pivotally as is the mount upon which they are supported. The apparatus may employ Pelfier devices for interior air temperature enhancements. One heatsink of these thermal devices is located within that plenum communicating with ambient or outside air, while the oppositely disposed interior air treatment heatsink is located within an adjacent forwardly positioned plenum. A low battery detector and annunciator assures maintenance of the vehicle battery power supply.

Abstract: A vehicle air conditioning apparatus has discharging openings, each of which is disposed near a corresponding one of passenger seats. Accordingly, air discharged from air outlets does not flow so as to concentrate on one discharging opening and instead flows toward the respective discharging openings. Therefore, the air blown from the air outlets is prevented from being mixed, thereby being capable of separately controlling the temperatures of the compartments on the respective passenger seats.

Abstract: Air vent assemblies for vehicles that facilitate interchangeability of air vents and other components include an air duct manifold, a trim plate, and a plurality of interchangeable air vents. An air duct manifold includes a plurality of air ducts, with each air duct terminating at a respective outlet. A trim plate includes opposite front and rear walls, with a plurality of nozzles extending from the rear wall in spaced-apart relationship. Each nozzle detachably engages a respective air duct outlet and is configured to receive air from the air duct and allow the air to pass therethrough and out of a respective opening in the trim plate front wall. Each air vent is detachably secured within a respective opening in the trim plate front wall and may be easily detached for repair or replacement.

Abstract: Air duct outlets having joystick controls are provided. A housing has an inlet, an outlet and a frame secured within the housing between the inlet and outlet. A louver assembly is operably coupled to the frame and includes a first set of louvers and a second set of louvers positioned upstream from the first set of louvers. The first set of louvers are operably connected together such that pivotal movement of any one of the louvers in the first set causes pivotal movement of the remaining louvers in the first set. The second set of louvers are operably connected together such that pivotal movement of any one of the louvers in the second set causes pivotal movement of the remaining louvers in the second set. A joystick is configured to pivot the first and second sets of louvers about respective axes.

Abstract: In an air conditioning unit that cools a motor of a fan by partially introducing an air blown by the fan into the motor, a case has a wall for defining an air introduction chamber adjacent to an air passage. The air introduction chamber has an air inlet and an air outlet so that the blown air is partially introduced into the motor from the air passage through the air introduction chamber. The wall of the air introduction chamber slopes downwardly toward the air inlet and defines a lowest portion within the air introduction chamber. The air inlet is positioned adjacent to the lowest portion of the air introduction chamber.

Abstract: An air-conditioning duct structure is included in a vehicular dash beam member. Material for the duct is made of a heat insulating and sound absorbing material and is adhered onto the surface of a sheet material for the beam member which is then bent into a semi-tubular shape so that the material for the duct is positioned inside thereby forming beam member bodies. Beam member bodies are combined by joining their joining surfaces that face each other to thereby form a tubular closed sectional shape. Achieving vibration attenuation, noise absorption and the heat insulating functions with an inner surface sheet member of an air conditioning duct is achievable. An air conditioning duct extending across a vehicle's width is formed by joining a metal reinforcing member and a resin cover. The sheet member is put between the reinforcing member and the cover.

Abstract: An air conditioning system includes an air conditioner for blowing conditioned air toward a compartment of a vehicle, and a dashboard having a design surface exposed to the compartment. An inner air passage extending nearly parallel to the design surface is formed in the dashboard, and a plurality of diffusion blowing openings are formed in the design surface. Thus, the condensed air is blown from the diffusion blowing openings into the compartment of the vehicle, while passing through the inner air passage. For example, cool air is blown from the diffusion blowing openings, so that the cool air can cool the dashboard while cooling the compartment of the vehicle. Moreover, because the cool air passes through the inner air passage extending nearly parallel to the design surface, the dashboard can be effectively cooled.

Abstract: An air conditioning unit of a vehicle air conditioner is disposed inside a dashboard approximately at a center portion in a vehicle right-left direction. Center face air outlets are provided in the dashboard opposite to right and left end sides of the air conditioning unit, and center face openings are provided in the air conditioning unit at right and left end sides in a vehicle right-left direction. Therefore, the center face outlets on the dashboard and the center face openings of the air conditioning unit can be connected by center face ducts each of which extends substantially straightly. Accordingly, pressure loss of air in the center face ducts can be reduced, and an air amount blown from the center face air outlet into the passenger compartment can be effectively increased.

Abstract: An inside/outside air switching device for a vehicle is constructed of an integrated case and a rotary door. The case has an inside port and an outside port, and a plate rib protrudes inside the case from a portion between the inside port and the outside port. The rotary door has seal members protruding toward outside from a body plate of the rotary door. A clearance is provided between a wall surface of the case and a protrusion top end of the plate rib, so that the seal members of the rotary door can be displaced from a side of the inside port to a side of the outside port through the clearance when the rotary door is assembled from the inside port into the integrated case.

Abstract: An air duct, in particular for a motor vehicle heating, ventilating and/or air conditioning system, which is acoustically optimized by virtue of the fact that at least one cross-sectional discontinuity is constructed by making use of a phenomena which occur as acoustic scattering processes at the cross-sectional discontinuity. The cross-sectional discontinuity should extend substantially perpendicular to the flow direction in the air duct.

Abstract: The mixing device, for distributing in variable proportions a main air stream (8) flowing through an apparatus for heating and/or air-conditioning the cabin of a motor vehicle between a hot air duct (14) and a cold air duct (18), comprises a perforated panel (40) arranged in the hot duct (14) and a shut-off plate (44) that can move between an open position in which it is spaced away from the perforations (42) in the panel (40) and a shut-off position in which it shuts off the panel, a shutter (50) for adjusting the passage cross section of the cold air duct (18) that can move between an open position and a shut-off position, a control mechanism (54) for controlling, in synchronism, the movement of the shut-off plate (44) and the movement of the shutter (50).

Abstract: A fairing vent comprising a louver rotatably attached to a body, and a louver handle attached to the louver, and a method of installing the fairing vent on a vehicle fairing. The body contains a duct having a duct intake and a duct outlet. The louver is sized to block airflow through the duct when the fairing vent is in the closed position. The fairing vent is closed by rotating the louver using the louver handle until the louver blocks airflow through the duct. A lip is disposed around the duct intake. At least one resilient tab is disposed on the body, each resilient tab being biased away from the body at an angle of approximately 10 degrees. Each resilient tab is disposed a sufficient distance from the lip so as to sandwich the thickness of a vehicle fairing between the lip and the resilient tab(s). The fairing vent is installed on the fairing by cutting a fairing cutout into the fairing. The fairing cutout is sized to admit the body but not the lip.

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 vehicle steering wheel, which comprises: (a) a main connection hose originated from a pre-existing air conditioning unit; (b) a coupling device connected to the main connection hose; (c) a left connection hose extension extending from the coupling device; (d) a right connection hose extension extending from the coupling device; (e) a plurality of left air vents connected to the left connection hose extension and mounted on a left hand-gripping portion; and (f) a plurality of right air vents connected to the right connection hose extension and mounted on a right hand-gripping portion.

Abstract: In an air conditioning unit that cools a motor of a fan by partially introducing an air blown by the fan into the motor, a case has a wall for defining an air introduction chamber adjacent to an air passage. The air introduction chamber has an air inlet and an air outlet so that the blown air is partially introduced into the motor from the air passage through the air introduction chamber. The wall of the air introduction chamber slopes downwardly toward the air inlet and defines a lowest portion within the air introduction chamber. The air inlet is positioned adjacent to the lowest portion of the air introduction chamber.

Abstract: A method includes molding a set of deflector plates in a first mold with a first material, removing the deflector plates from the mold, and placing the deflector plates in a second mold, molding a duct to the deflector plates in the second mold using a second material. The molding includes forming an engaging rim in the duct for connecting the duct to another duct, and removing the deflector plates and the duct from the second mold. The deflector plates pivot with respect to the duct when the molding of the duct is finished.

Abstract: There is provided an air guide duct for a vehicle, the air guide duct connected for communication with an air conditioner unit provided in a passengers' room in a vehicle, the air guide duct adapted to pass and guide temperature regulated air supplied from the air conditioner unit, the air guide duct comprising a first base body constituting one duct half, the first base body including a mounting part for allowing a wire element of an electrical component system to be contained along the air guide duct, and a second base body constituting the other duct half, the second base body covered over the first base body to define an air flowing space therebetween, the second base body including a cover piece which laterally extends from the duct, wherein the mounting part containing the wire element is so constructed as to be covered with the cover piece.

Abstract: In a ventilation box (2) of a motor vehicle, the ventilation box being composed of a plurality of housing parts (5-7), housing parts (6, 7) arranged in the region of a steering column (3) are formed to be fastened selectively on the left or the right side of the motor vehicle. As a result, the ventilation box (2) can be converted for the respective motor vehicle, irrespective of the position of the steering column (3).

Abstract: A central console for a vehicle having a ventilated storage compartment which is connected via at least one air inlet to at least one air duct in order to ventilate the vehicle rear, and having a control device for opening and closing the one air inlet. For the purpose of ventilating the storage compartment without adversely affecting the cross section of the air duct which continues in order to ventilate the rear, at least one air duct runs laterally past the storage compartment, and the air inlet is arranged in the front end wall of the storage compartment and the air duct is widened in that duct section which is mounted upstream of the air inlet.

Abstract: An air duct for air conditioning of the rear area of a motor vehicle, extending from a front door through a B-column into a rear area of the motor vehicle. The duct transition between the front door and the B-column is formed by a duct part which is deformable at least in its longitudinal range and which, when the door is closed, bridges a gap existing between the front door and the B-column and, during the opening of the front door, is moved back by means of a prestressing force into a covered position to thereby provide for unimpaired entering and exiting of the door.

Abstract: An air conditioning system for an automotive vehicle having a sunroof, a sunshade comprising a number of louvers and installed in a ceiling opening located below the sunroof, and a roof air path formed between the sunroof and sunshade so as to be in communication with an air path of the air conditioning system blows cold air into a passenger compartment through the sunshade via the roof air path during cooling operation controlling angles of the louvers of the sunshade, and draws recirculated air from an upper part of the passenger compartment by a sub-blower and direct the recirculated air to a main blower during heating operation.

Abstract: A cross car structural support beam assembly is mounted between a pair of vehicle door pillars of a structural body of an automobile having an integrally formed male connecting snorkel projection for interfacing with air feeder tubes extending from ducts in the instrument panel assembly. The cross car beam assembly includes first and second plastic panels having at least one flow passage defined therebetween and at least one opening in the panels in fluid communication with the air flow passage. A third panel is mounted to the second panel to complete the cross car beam assembly and includes at least one tubular male connecting projection integrally formed into the outer surface of the third panel in fluid communication with the at least one air flow passage. The tubular male connecting projection interconnects with a tubular female connecting portion of an air feeder tube to supply air to a passenger compartment through ducts in an instrument panel assembly.

Abstract: The invention concerns an air conduit for motor vehicle instrument panel made in the form of an open conduit with a longitudinal slot defined by two fusion faces, the open conduit being produced in one single piece with the instrument panel by moulding a ductile material enabling the stripping by widening the longitudinal slot, means for joint being provided by joining the fusion faces of the longitudinal slop after stripping.

Abstract: A ventilation system for the interior of a vehicle includes a housing comprising an air inlet; a first air outlet; and a second air outlet, which is arranged directly in front of the first air outlet; and a swivel flap arranged in the area of the air outlets. The second air outlet is arranged in a plane that is oriented at a right angle with respect to the plane of the first air outlet. For achieving an air deflection with a simultaneous air distribution within a narrow space, the housing has a third air outlet which is situated in a plane orthogonal to the planes of the other air outlets.

Abstract: The invention relates to a tongue connection, in particular for fixing an air vent on a wall in a passenger compartment, on a basic body which is to be arranged in a releasable manner on a border of a wall opening by way of at least two tongues which project from the basic body, the tongues engaging, along the opening border, in the opening and restricting movement of the body in the direction of the opening plane. There is provided on at least one tongue a (radial) protrusion which projects outward in the direction of the opening border, cuts into the opening border when the basic body is installed on the wall, and prevents movement of the basic body in the opening plane by producing a form fit in relation to the opening border.

Abstract: A ventilation system for a long life vehicle (LLV). A rear vent currently existing on most LLV's is secured by an adapter to provide air to a squirrel cage fan or other air pump. The cooler air is ducted to the forward passenger compartment where its glass enclosure serves to heat the confines to high temperatures during sunny days. A resistor in the ductwork serves as a generally electrically-identical configuration to an auxiliary fan currently present in most LLV's. The ductwork transmits the air pumped from the rear vent to a vent assembly having a plenum and louvers with grills. The plenum provides a small and temporary reservoir for the air flow so that it may be redirected sideways to the louvers. The louvers provide course adjustment for the airflow with finer adjustment achieved through the grills. Overall advantages include greater driver and passenger well being leading to safer operation of the vehicle as well as less thermal stress for the instruments and operating controls.

Abstract: A remotely controlled powered hingeless ventilator has a cover configured on a frame on a side thereof opposite from a tension rod. The cover is variably positionable between a closed position and a fully open position relative to the frame. An actuating member connected to an underside of the cover extends through a slot in a plate member across the ventilation opening and includes an arcuate guide slot defined therein. The tension rod is disposed through this guide slot. A motor is mounted on the frame and is connectable to a power source. The motor includes a rotatable drive arm connected to the actuating member. The drive arm has a generally arcuate shape and is connected to the actuating member so that an opening and closing force is exerted by the drive arm to the actuating member along a line of force corresponding generally to an extension of the arcuate guide slot.

Abstract: A panel body of an instrument panel in an automobile is formed of a synthetic resin foam. A duct element made of a synthetic resin foam having a compatibility with the panel body is welded to a back of the panel body to define air-conditioning air passages between the panel body and the duct element. Thus, the instrument panel also serves as a single duct element. Therefore, it is possible to provide an inexpensive air conditioning duct device in an automobile, which can be produced from a decreased number of parts and at a decreased number of assembling steps.

Abstract: A mixing device for mixing two air flows has plural first flexible curtains disposed between first edge regions of alternate pairs of air guides, and a plurality of second flexible curtains disposed between second edge regions of alternate pairs of air guides. Moveable air guides in each pair may be moved to control the flow of air.

Abstract: In constituting an air conditioner case by bonding a first case member having a cooling air intake chamber and a second case member that is not provided with a cooling air intake chamber, the cooling air intake chamber is formed in a direction that is perpendicular to an air intake port and a blower mounting hole, opening via an opening portion. A mounting plate provided with a regulator is mounted at the opening portion. Thus, since a partitioning wall and barrier walls defining the periphery of the cooling air intake chamber can be formed at the same time as the formation of the case main body of the first case member, it is not necessary to further divide the first case member.

Abstract: A ventilating device (1) for a motor vehicle, having a ventilation opening (5) arranged in the central region of an instrument panel (2) and/or a ventilation opening (5) arranged in a center, console which can be connected optionally to a suction side or a pressure side of a fan having an air filter. Ventilation openings arranged in a lateral region of the instrument panel (2) can be connected to the pressure side of the fan. This makes it possible for air which has been used, for example, by a smoker in the front region of the motor vehicle to be cleaned particularly quickly.

Abstract: A motor vehicle dashboard including a body made of injection-molded plastic form, and at least one air duct integrally molded with the dashboard body. The air duct is produced by means of an at least partially absorbable removable insert, particularly an inflatable balloon.

Abstract: A ventilation system for a vehicle to pressurize the cargo area of the vehicle including a duct mounted adjacent the top wall of the vehicle cab with a first end in flow communication with an opening in the front wall of the vehicle, and a second end in flow communication with the cargo area of the vehicle. An adjustable damper is disposed within the duct adjacent the first end. The damper is adjustable between a closed position and an opened position to adjust the amount of air flow through the duct. The center portion of the duct includes a plurality of apertures to direct a portion of the air flowing through the duct into the cab. The lower wall of the center portion includes a plurality of diagonal channels to collect water and direct it to a drain adjacent the first end of the duct. A fan is mounted within the duct to provide air flow into the cargo area when the vehicle is not moving. A filter is also mounted within the duct to prevent dust and particulate matter from entering the cargo area.

Abstract: In constituting an air conditioner case by bonding a first case member having a cooling air intake chamber and a second case member that is not provided with a cooling air intake chamber, the cooling air intake chamber is formed in a direction that is perpendicular to an air intake port and a blower mounting hole, opening via an opening portion. A mounting plate provided with a regulator is mounted at the opening portion. Thus, since a partitioning wall and barrier walls defining the periphery of the cooling air intake chamber can be formed at the same time as the formation of the case main body of the first case member, it is not necessary to further divide the first case member.

Abstract: A retrofittable kick panel to be installed over the insulation of the inner walls under the dashboard of an automobile to form a suitable acoustic chamber for audio speakers. It includes a plate like base member having a raised portion with a central opening therethrough which opening is surrounded by a mounting rim for mounting of a audio speaker. Adjacent to the raised portion are a plurality of louvers to providing fresh air access to the passenger seats and the floor location of the automobile. In use, the base member is installed over the side wall insulation and fresh air duct under the dashboard of an automobile, forming an acoustic chamber which will receive the audio speaker. Wiring is routed to the chamber from one audio channel of the radio or other audio equipment and to an audio speaker which is then mounted on the annular rim after the removal of any felt installation material that would interfere with the speaker's magnet.

Abstract: A motor vehicle dashboard has a support face. Air ducts are carried by the dashboard for taking air into the cabin of the vehicle. Each duct has a longitudinal slot which is bounded by two adjacent edges, so that the duct has a transverse cross section in the form of an open annulus. The duct has two external engagement faces on either side of the longitudinal slot, and is fixed to the support face of the dashboard by means of these engagement faces. The duct is made by moulding in a suitable deformable material such that it can be stripped from the mould by opening out the slot, after which the slot is closed up again.

Abstract: An air distribution system for conditioning air and selectably forcing the air into a passenger compartment or a trunk compartment of a vehicle is provided. The air may be pre-cooled or pre-heated before being forced by a ventilator to particular vents. This is particularly useful on a warm day when the top is down on a convertible. By cooling the trunk, specifically, groceries or perishables can be kept relatively cool.

Abstract: A vent cover assembly for a side vent of a recreational vehicle which includes a frame to be mounted at the vent opening and a vent cover removably retained within the frame. The frame has a planar main wall which forms a rectangular-shaped central opening and rectangularly-shaped and vertically spaced apart air inlets at each lateral side of the central opening. The vent cover is removably retained within the central opening of the frame such that a front surface of the vent cover is co-planar with a front surface of the frame. The vent cover has a planar main wall which forms a plurality of rectangularly-shaped and vertically spaced apart air inlets. The air inlets of the frame effectively form extensions of the air inlets of the vent cover.

Abstract: A low signature, low restriction, ballistically protective air intake assly for an exteriorly armored structure. The assembly is provided is comprised of one or more ducts having an entry end, an exit end and a spiralled duct portion between the ends. The entry ends communicate with an intake bell of armor material. The intake bell curves both away from the duct and out from duct openings at the entry ends. At the exit ends of the ducts are armor members faced toward the duct openings at the entry end. The armor members are positioned such that the spiralled duct portions lie between the armor members and the intake bell. Projectiles such as bullets travelling toward the entry end duct openings are either deflected away by the bell or caught by the armor member, whereby ballistic protection exists for elements in the armored structure interior to the assembly.