Abstract: A wind deflector and bug screen clip apparatus is used in connection with an air current deflector shield which is attached to a vehicle with a supporting channel member attached to the bottom of the shield and has a detachable cover attachable to the front of the vehicle and to the front of the air current deflector shield. A clip member for attaching the attachable cover to the air current deflector shield has a body having a pair of slots formed therein with a predetermined shape for sliding onto the supporting channel member of the air current deflector shield with a snap portion formed on the front thereof for attaching to snap portions on the detachable cover. The clips can be slid onto an existing air current deflector shield supporting member and the detachable cover readily attached to the snap portion formed on each clip.

Abstract: Device for guiding of air flow on vehicles, especially rear spoilers, with an air deflector which, in relation to the vehicle body, can be moved between a retracted position and an extended position in which the air deflector, as a whole, is away from the vehicle body and, in relation to its orientation in retracted position, is inclined. The air deflector is supported by an arcuate adjuster that is rigidly connected to it and which is slidably guided in a correspondingly arcuate guide channel of a guide block that is fixed with reference to the vehicle body.

Abstract: The air spoiler includes a blow molded air spoiler body with a plurality of recesses molded in its lower wall and spaced from one another across the back of the automobile body. The recesses each have rising laterally opposite walls and in each recess a securement device is located which is fixed to the spoiler body by molding of the lower wall of the spoiler body. Each securement device can have a screw-threaded fastener threaded into it for securing the spoiler on the rear of the automobile body.

Abstract: Deflector apparatus for directing a flow of air downwards along the rear window of a car comprises a curved, elongated deflector plate (5) that is positioned substantially parallel to the rear window with the upper edge of the deflector plate being just above the roof-line (2) of the car and being mounted on the car by means of at least one mounting member. In order to avoid having the mounting members interfere with opening of the rear door (1) of the car and to eliminate the need for drilling of holes in the metal parts of the car, the mounting member (6) is fastened to the glass of the rear window itself, preferably by gluing, so that, without touching the painted metal parts of the car, the deflector plate, will extend above the metal parts of the car and above the rear window (4).

Abstract: An automotive roof spoiler having retractable, concealable lamps particularly suitable for trucks and other vehicles used for both on-road and off-road purposes. The automotive roof spoiler includes lamps which are mounted within the roof spoiler about axes which are generally parallel to the longitudinal axis of the spoiler and a motor, preferably located within the roof spoiler, which rotates the lamps from a first position wherein the back surfaces of the lamps are generally parallel with the top upwardly inclined surface of the roof spoiler for on-road use to a second position wherein the front surfaces of the lamps are generally vertical and extend above the spoiler top surface for off-road use. The preferred embodiment includes covers which are hingedly attached to the spoiler adjacent the back surface and which cover the lamp openings in the top wall of the spoiler in coplanar relation when the lamps are rotated to the downward closed position for on-road use.

Abstract: Wind deflector assembly for vehicles with a sliding or sliding-lifting roof with a wind deflector blade which is connected, by way of at least one hinge, with a carrier part of a roof installation unit and which is swivelable around an axis of the hinge. The hinge has a bearing block attached releasably to the carrier part. The carrier part is provided with guides into which guide parts of the bearing block may be slid. At least one stop is provided for at least a temporary fixation of the bearing block, slid into the guides, with reference to the carrier part. An installation unit equipped with the deflector assembly may be pre-assembled and operationally tested prior to attachment of the unit to the vehicle roof, and can be installed in the vehicle without requiring steps necessitating re-assembly or re-alignment of the deflector assembly.

Abstract: An air baffle apparatus for diverting air around a vehicle being towed, the apparatus having a deflector shield of predetermined dimensions and configuration deployed in an operational attitude to divert air moving along the side of a vehicle; the mounting assembly for the air baffle providing a means for releasably adjusting the air baffle in selected attitudes.

Abstract: A drag reducing apparatus is attached to the back of a vehicle and serves to reduce drag by capturing at least two vortices which turn the flow inwardly behind the vehicle body thereby effectively reducing the back area of the vehicle. The first and second vortices are captured in cavities formed by a first and a second vertical panel attached to the back of a vehicle. A third horizontal panel can be attached to the top of the first and second panels to create a cavity for the capture of a third vortex formed by the air stream flowing over the top of the vehicle. The panels are preferably hinged so that they can be folded up flat against the rear of the vehicle when not in use. When in use the panels are locked in position so that they don't vibrate when the vehicle is moving. Top and bottom panels can be employed to define the upper and lower limits of the first and second vortex. Other embodiments employ different panel arrangements to improve the efficiency of the vortex capture.

Abstract: In a military vehicle having small observation windows susceptible to being coated with airborne mud particles when the vehicle is operating off-the-road under adverse climate conditions, it is proposed to provide air pressure mechanisms on the vehicle near the window surfaces. Such air pressure mechanisms are oriented to generate an air curtain in the space between airborne particulates and the window surface, whereby the curtain acts to deflect such particulates away from the window surface.

Abstract: An air flow control device for an automotive vehicle includes an air flow control fin pivotably secured near the rear end of a vehicle. The air flow control fin is pivotable to either of two angular positions with respect to the vehicle body. A manual operator is disposed within a vehicle compartment and is connected to the air flow control fin through a remote control mechanism. The air flow control fin is movable between a first spoiler position in which the fin diverts air flowing along vehicle body surface upwards so as to exert a downward force and enhance the traction of the vehicular wheels, and a second air flow guide position in which the fin guides the air flow toward a rear window surface so as to remove rain water, dust and so forth. The manual operator can be operated by a driver in the vehicle compartment to select either the first spoiler position or the second air flow guide position.

Abstract: An air deflector, suitable for mounting adjacent an opening in the roof of a motor vehicle. The air deflector comprises a body member having a leading edge and a trailing edge, a recess formed in the trailing edge, and a flap accommodated in the recess and pivotably connected to the body member on pivots at opposite ends of the flap. The body member has sockets integrally therewith at opposite ends of the recess and the pivots are received in the sockets.

Abstract: In an air spoiler of wing type made of plastics material to be installed on the rear of a vehicle body, an air spoiler body is molded integrally with a mounting assisting member formed between an upper surface and a lower surface of the air spoiler body and along the longitudinal direction thereof. A mounting member, constructed separately, has one end joined to the rear, i.e. inner, side of the upper surface of the air spoiler body and has its other end locked to the mounting assisting member. The air spoiler is tightened by bolts to the vehicle through the mounting member. Accordingly, sink marks, such as may appear with an integrally-formed mounting member are not produced on the upper surface of the air spoiler body during the molding process and strain such as such as would be evident by causing the appearance of wavy forms on the upper surface at the installation state is reduced.

Abstract: Disclosed is an isolator for preventing fumes from the engine compartment and exhaust of a motor vehicle from entering a curbside blower intake of the vehicle. In a preferred form, the isolator also establishes an air curtain which projects outwardly adjacent the windshield, to deflect forward moving exhaust fumes from entering the blower intake.

Abstract: A wind deflector arrangement for a motor vehicle roof having a roof opening that can be closed by means of a sliding cover. The wind deflector can be pivoted around an axis extending transversely to the longitudinal axis of the vehicle along the front edge of the roof opening. The wind deflector has a body which, when the sliding cover is opened is swung out by spring power, and, when the sliding cover is closed, is swung in by a cam that is displaced as a function of the movement of the cover and which interacts with at least one lever arm that is connected with the wind deflector via a driving arrangement. The body of the wind deflector, at least partly, consists of an as extruded, extruded profiled part, the end edges of which are covered by attachment to the body of a respective end piece that, at the same time, is part of the driving arrangement connecting the lever arm with the wind deflector.

Abstract: A deflector shield for trucks and other vehicles is releasably connected to upper and side edges of the truck's radiator grille. The deflector comprises a shield mounted on a base and the base has a pair of lateral flexible frames for attachment along the grille's upper edge, each frame extending away from the grille's center toward its side edges. An inclined channel is formed at the juncture of the concave front wall and inclined rear wall of the frame for receiving the elongated transparent shield therein and the entire base portion of the deflector shield can be secured to the radiator grille by means of screws or the like.

Abstract: An improved wind deflector including an extruded aluminum support member having a forwardly projecting rounded nose portion to initiate wind deflection, and angularly related generally vertically and horizontally extending walls to receive an acrylic transparent wind deflector member and brackets to secure the extruded member to vehicles. Preferably the extruded support member has vertically extending relatively movable parallel walls to receive and clamp the acrylic wind deflector therebetween in such a manner that it is not necessary to project fasteners through the acrylic member to weaken it or start fractures therein. Also the extruded support member has horizontally extending relatively movable generally parallel walls between which brackets project to secure the extruded member to the vehicle, and wherein clips are employed to secure the brackets to the extruded member.

Abstract: An apparatus for inhibiting foreign material from being deposited on a rear window of a motorcar essentially comprising a first inclined air introduction surface extending in a rearward and downward direction from a rear laterally middle part of an upper surface of a body roof, a second inclined air introduction surface formed on a laterally middle part of a rear window frame of a rear gate or the like fitted to the car body and extending rearwardly from the first inclined air introduction surface in a continuous and flush manner and an air flow control plate fixedly mounted on the second inclined air introduction surface on the rear window frame so as to allow air introduced into both the first and second inclined air introduction surfaces to flow along an upper surface of a rear windshield fitted to the rear window frame, wherein the upper surface of the air flow control plate is located flush with the upper surface of the body roof and an upper surface of the rear window frame.

Abstract: An air deflector for trailers having a forwardly facing front wall. The air deflector includes a body adapted to extend between the side edges of the trailer front wall and from the top edge thereof to a selected location on the front wall remote from the top edge. The body projects forwardly from the front wall with the forwardly facing surface of the body being generally convex. At least one air vent is located at the bottom margin of the body and is adapted to admit air between the body and the front wall of the trailer. In certain embodiments a resilient recoil rib is attached to the body, extending generally parallel and adjacent to the rearwardly facing surface of the body and between the top and bottom margins of the body. The recoil rib is adapted to increase the body's ability to resist deformation from force applied to the forwardly facing surface of the body and, upon release of such force, to aid the body to resume its original shape.

Abstract: A horizontally elongated edge upstanding panel is provided and includes front and rear sides as well as pairs of upper and lower corner portions disposed in the same plane. The panel includes a central area which is laterally offset forwardly of the aforementioned plane and the forward facing side of the panel includes generally planar upper and lower surfaces as well as generally planar opposite side surfaces convergent toward the central area of the panel member. The side surfaces are substantially vertically disposed while the upper surface is forward and downwardly inclined and the lower surface is forwardly and upwardly inclined. The forward displacement of the central area from the plane containing four corner portions of the panel is equal to approximately 1/10 the length of the panel and slightly less than the vertical height of the panel.

Abstract: An aerodynamic rear view mirror includes a mirror glass mounted within a streamlined mirror housing having inboard and outboard side walls and top and bottom walls. The inboard side wall is concavely curved to define a rear portion nearly parallel with the door side window and a forward portion which curves inboard to reach around the pillar. The mirror housing is mounted on the vehicle body in generally parallel spaced relation relative the side window and the pillar to cooperate therewith in defining a curved airflow channel by which relatively clean air from in front of the windshield is ducted through the airflow channel around the pillar and onto the side window to thereby create an airflow barrier against foreign matter impingement on the side window and to streamline airflow from the front of the vehicle body around the side of the vehicle body.

Abstract: In draft deflectors for motor cars with a folding roof which include transversely extending members, such as a roof cross-member. The draft deflectors are formed on safety padding elements, such as frame padding or headrests associated with the interior of the vehicle, or as parts of the padding which, mounted so as to be pivotal about transverse axes of the vehicle, may be opened out from a rest position into an operating position.

Abstract: In a motor car with a flow stepped tail and air-conducting means in the form of a wing-spoiler combination, the flow stepped tail is constructed with an angle of inclination of the tail window which ensures a flow down from the rear edge of the roof and over the tail window free from flow separation and the wing (5) is disposed offset in front of and above the spoiler (6) secured to the tail in such a way that it is located in front of and above the area (18) subject to flow separation. In this connexion the wing (5) has a broad nose rounding (15), is arranged with its convex curvature (16) towards the tail window (3) and is disposed in an optimum position (28) and at an optimum angle of incidence (29). The wing (5) may preferably be connected to the spoiler (6) to form a structural unit by way of arms (7) running upwards and forwards along the frame of the tail window (3).

Abstract: An improved winterfront is disclosed for use on trucks having grills without a center bar spanning the width of the grill. The winterfront is mounted in front of a grill on the truck in order to restrict the quantity of cold ram air that would otherwise flow through the grill and then around and through the engine fan toward the engine and driver's compartment of the truck. The winterfront includes a ram-air-blocking portion and fasteners that removably fasten the ram-air-blocking portion to the truck. The winterfront also includes an opening completely surrounded by the ram-air-blocking portion of the winterfront. The opening in the blocking portion has a center which is aligned with the axis of rotation of the engine fan so that the flow of air through the opening is directed symmetrically about the axis of rotation of the engine fan.

Abstract: An air current deflector shield with an improved shield gripping bracket is disclosed. The shield member comprises a single piece of unbroken transparent material which is received into an elongated rigid bracket having forward walls, a bottom wall and a rearward wall which define a shield receiving channel. Below the bottom wall is a means for adjustably receiving securing straps which allow the straps when not secured, to be moved at will along the longitudinal axis of the bracket, providing for complete adjustability as to where the attaching straps are connected to the forward grill and/or hood portion of an automobile.

Abstract: An airflow improvement device for improving aerodynamic characteristics of a tractor-trailer truck comprises a side panel extending between the side of the tractor and the side of the trailer. A first end of the side panel is fixed to one of the tractor or trailer and the other end of the side panel is slidably restrained in a pocket structure mounted to the other of the tractor or the trailer so that the side panel will bend to form a smooth curved transition surface between the sides of the tractor and the trailer when the truck articulates to make a turn.

Abstract: A support mechanism for moving a roof top pivotally mounted air deflector panel between raised and lowered positions includes a collapsible toggle linkage having a support link and a pivot link. The pivot link is pivotally mounted on the cab rear wall and has a handle by which an operator standing on the tractor at the rear of the cab pivots the pivot link between vertically upright extending and downward extending positions. A support link has an upper end pivotally connected to the deflector panel and a lower end pivotally connected to the pivot link so that rearward pivotal movement of the pivot link swings the lower end of the support link rearwardly and downwardly to withdraw the support link from support of the air deflector panel. The collapsible toggle linkage stores adjacent the cab rear wall for ready handle access by the operator for subsequent raising of the deflector panel.

Abstract: An interchangeable frame mounting system is incorporated into an articulated deflector shield assembly for releasable, rigid connection to the hood or radiator grille of a vehicle. The assembly includes a pair of complementary halves each having an elongated C-shaped channel or flange and a rearwardly directed open slot along the length with mating edge portions at adjacent ends of the halves adapted to abut one another. A splice is releasably inserted in the open slots for interconnecting the halves of the frame together. A plurality of brackets at uniformly spaced intervals along each channel includes a leg portion alignable with the slot of the flange and a second leg extends at an angle to the first leg and conforms to the angle of the return portion together with first and second fasteners for releasably interconnecting the first and second legs to the flange and hood, respectively.

Abstract: An edge for frontal engagement with air flow as occurs when vehicles are moving in an air environment. The edge is elongate and intended to wrap around an existing corner where two substantially planar surfaces intersect, one of the planar surfaces being a front surface and the other planar surface being a rearwardly receding flanking surface such as a top surface or a side surface of a vehicle. The edge rises abruptly from the front plane and moves forwardly and outwardly in a convex arc to a point of abrupt inflection outside of the flanking plane and adjacent the front plane as extended through the flanking plane. The discontinuity or inflection is a change from convexity to concavity formed by alternate concavity and convexity and progressing generally toward faired contact with the flank plane.

Abstract: An automobile body of the type having a flat vertical rear end flared at the top and sides thereof and provided with elongate, angularly, rearwardly and inwardly extending air slots having inlet ends opening through the top and side body panels in front of the flared surfaces and outlet ends opening through said rear end through which air flows to reduce air turbulence behind the vehicle and drag caused by the turbulence and provided further with tail and signal lights in said slots.

Abstract: An air deflector is adapted to be mounted on a vehicle and, by deflecting air, to reduce turbulence and drag associated with another vehicle which is towed by the first vehicle. The air deflector includes a side shield to extend outwardly and rearwardly outside a side wall of the front vehicle along the side wall, and a mounting for the shield, to mount the shield on the front vehicle. The side shield has an inner edge surface which defines an edge surface contour for facing the side wall of the vehicle in close proximity to such side wall. The mounting is adapted to accomplish the facing-close proximity relationship between the inner edge surface of the shield and the side wall of the vehicle. The mounting includes a post to insert in a substantially vertical opening provided on the front vehicle, and a brace. The post has a surface to extend outwardly and rearwardly and to abut the rear surface of the shield.

Abstract: A vehicle having a body with sides presenting a substantially large lateral projection adapted to be engaged by unbalanced air currents when passing substantially large vehicles traveling at relatively high speeds on the highway is disclosed. A flap system is attached to the rear end of the body of the vehicle and adapted to be moved by air currents on the first side of the vehicle body to a position on a second side of the vehicle body for putting a drag on the second side thereby preventing side sway of the vehicle.

Abstract: The device of this invention comprises an air induction passage for directing air upwardly rearwardly and a planar anti-lift member. The device is mounted at the front bumper, near a headlamp, or at rear bumper, or air dam skirts or at the rear of the radiator grille without substantial alterations of the vehicle's general contour lines. An anti-lift thrust is generated by lowering the point at which the front airstream splits up into an upper stream which moves over the upper surface of the vehicle and a lower stream which moves below the bottom of the vehicle, whereby the vehicle's power of adherence to the ground at the front wheels is increased. The vehicle's adherence power at the rear wheels is also increased by directing the airstream flowing below the vehicle bottom surface upwardly rearwardly of the vehicle. The impact absorbing capability of the vehicle is increased by forming the air induction passage with a resilient material to make the air passage act as an impact absorbing member.

Abstract: A deflector shield fixed to the hood of a motor vehicle comprising a mounting bracket and a transparent panel upstanding from the bracket. The panel is recessed in its rear surface to provide visible enhancements. A light source mounted on the bracket emits light into the lower edge of the panel and the recessed surfaces deflect light out of the plane of the panel thereby illuminating the enhancements.

Abstract: An air deflector for motor vehicle windows for directing air into the interior of a motor vehicle, the air deflector including a mechanism for releasably securing the air deflector to an open window and a plate extending from the securing mechanism to the exterior of the motor vehicle to divert and direct air through the open window into the interior of the motor vehicle.

Abstract: A low-drag truck consisting of a tractor-trailer rig (10) characterized by a rounded forebody and a protective fairing (16) for the gap conventionally found to exist between the tractor and the trailer, particularly suited for establishing an attached flow of ambient air along the surfaces thereof, and a forward facing, ram air inlet and duct (24 and 22) and a plurality of submerged inlets (18) and outflow ports (20) communicating with the trailer (14) for continuously flushing heated gasses from the trailer as the rig is propelled at highway speeds.

Abstract: A vent-wing accessory for either front door of a motor vehicle installs at the front lower corner of a ventless window where it is guidably positionable and is held in place: (a) by fit of a fin downward into the door horizontal glass channel, (b) by fit of an upward axle-extension into the typical door front-frame rearwardly-sloping portion of glass-channel, (c) by forward and upward pressure of inclined portion of a glass window when it is rolled up into contact with a slope of the vent wing accessory, and as a safety, by a line extending from the vent wing accessory and engaging the window roll-up handle in a loop; positive angular positioning of the vent wing accessory is provided in the two-part assembly and alternative embodiments are disclosed.

Abstract: An automobile wind deflector assembly comprising a blade mounted on an automobile body by a pair of mounting brackets. The blade has at least one pair of alignment flanges and a pair of attachment flanges. Each mounting bracket has at least one flange cooperable with one of said blade alignment flanges and a mounting flange cooperable with one of said blade mounting flanges. The fasteners securing the brackets to the vehicle and the blade to the brackets are all obscured from view, providing the wind deflector blade with a smooth contoured outer surface uninterrupted by fasteners or the like while also providing a construction wherein the brackets can be mounted on the vehicle and then the blade mounted to the brackets. A pad may also be set between the bracket and the vehicle surface, which may have further alignment flanges to align said blade in cooperation with additional alignment flanges extending from the blade. The blade attachment flanges may comprise one set of the additional alignment flanges.

Abstract: A visor for automotive use including a plurality of air directing channels for reducing the aerodynamic drag of the visor. The visor is formed from a single sheet of material and the channels are formed by flat bottomed depressions beginning near the front edge of the visor and becoming progressively deeper to a point near the back edge of the visor. From this point, the bottom of the depression abruptly rises back to the visor surface. The depressions have a maximum width near the front edge and taper to half this width near the back edge of the visor. The channels direct air from under the visor through openings formed between the visor and the vehicle and exhaust the air with essentially laminar flow.

Abstract: An air deflector for reducing turbulence and drag at the rear area of vehicles consists of an elongated, cellular structure having inner and outer plates spaced apart by a plurality of deflector ribs. The deflector can be shaped to the contour of a specific vehicle configuration or can be provided in detachable form.

Abstract: This invention relates to a universal, towed vehicle wind umbrella for use on a towed vehicle having a projected frontal area of a given size in combination with a towing vehicle having a projected frontal area of a smaller given size than that of said towed vehicle to thereby provide an aerodynamically improved combination of a towing and towed vehicle set. The wind umbrella includes a first section releasably secured to the towed vehicle. A second section is releasably secured to the towing vehicle. The final component of the wind umbrella is an adjustably flexible middle section integrally secured respectively to the first section and the second section to thereby form an aerodynamically efficient vehicle set.

Abstract: A air deflector support structure for a vehicle side door window opening is disclosed, said support structure consisting of a triangle shaped framework applied parallel to the exterior front extremity of the window opening, said support structure having a channel shaped air deflector hinged to the vertical rail of the support structure, a wing nut and bolt applied to a elongated slot in the horizontal rail of the support structure and through a hole in a projection on the lower part of the air deflector regulates the angle of air deflection into the open window of the vehicle door.

Abstract: A device to be mounted on the back of a flat back vehicle for directing the air flow from across the top of the vehicle downwardly over the back of the vehicle thus preventing the formation of the usual vacuum to the rear of the vehicle.

Abstract: A speed responsive wind deflector comprises a flexible cantilever vane that is attached along one edge to a cross bar mounted on the roof of an automotive vehicle.

Abstract: Air dam apparatus for a motor vehicle includes a so-called door for deflecting air from the frontal clearance area at the front of the vehicle and below its structure such as the front bumper. The apparatus includes securement struts adapted for being attached to the vehicle structure for extending below it at the front of the vehicle. Fitments provide pivotal attachment of the door to the struts with the door extending transversely across and below the front of the vehicle and positioned centrally at the front of the vehicle for deflecting air which otherwise would pass between the vehicle wheels and beneath the vehicle itself to produce aerodynamic drag causing reduced fuel efficiency. The pivotal attachment permits rocking of the door about a transverse pivot axis for exposure of the door to aerodynamic forces. The pivot axis is located vertically with respect to the door so that such aerodynamic forces are balanced above and below the pivot axis.

Abstract: A wind deflector having a movable fairing is mounted on the tractor cab of a tractor-trailer combination to allow for the reduction of wind resistance during movement of the vehicle. The deflector which may be mounted directly to the cab or a stationery wind deflector has a fairing which pivots between operative positions which direct the air to reduce wind resistance and the rest position where the fairing has no substantial effect on wind resistance. Alternative methods are provided to move the fairing from its rest position to its operative position, including use of an air bag inflated by wind generated during movement of the vehicle or an air cylinder. The deflector is designed to be deployed during movement of the vehicle and may include the ability to change its operative position during movement of the vehicle.

Abstract: The exterior surfaces of an automobile is formed with a series of immediately adjacent or closely spaced wave-shaped flutes which extend longitudinally at an angle to the direction of travel and form a herringbone pattern. A series of parallel dividing walls extending in the direction of forward vehicular travel are integrally formed with the fluted surface. The dividing walls in one embodiment include trailing tapered projections slightly above the plane of flutes. The base of the flutes may have smaller rearwardly inclined pin-like projections to optimize air action within the flutes. In another embodiment, the curved or fluted member are shaped as feathered members with a plurality of parallel dividing walls for channelling the air.

Abstract: A pivotal hatchback for a streamlined rear of an automobile, said hatchback comprising a glass pane, a frame circumferentially bordering said glass pane, and an aerodynamic drag reducing device provided in a rear area of hatchback, said device comprising an elastic body having a holding part, said body abutting the glass pane and frame with the holding part being fastened to the frame.

Abstract: A frontal assembly for mounting on the front of a vehicle that serves to reduce drag, increase wheel traction and shield the windshield. A deflecting plate with a convex frontal surface extends up and back along a smooth, continuous curve of a selected radius as viewed from the side so as to cause the air to flow upwardly and rearwardly in a rolling action and then back over the roof of the vehicle. The deflecting plate extends laterally of the hood a sufficient length to direct airflow away from the front and along the sides of the vehicle. A fastening arrangement releasably fastens the deflecting plate to the vehicle. A support for the plate resists the forces of the air flowing against the deflecting plate during movement to hold the plate in position during use and is adjustable to enable changing the angular disposition of the upper edge portion of the plate so that the upper edge portion is always directed substantially toward the roof of the vehicle during use.

Abstract: An aerodynamic drag reducer for use on a vehicle having two sidewalls, a roof and a floor is disclosed. The drag reducer forms an enclosure on the rear end of the vehicle whereby aerodynamic drag against the vehicle is substantially reduced. The drag reducer forms an integral part of the rear end of the vehicle and is easily collapsed to facilitate low-speed, inner-city driving. In one embodiment of the invention, spoilers are added to the sides of the vehicle.

Abstract: A structure for protecting front surfaces of moving vehicles from insects and debris and modulating air flow through the vehicle radiator to control cooling efficiency, including an air deflector mounted on the leading edge of the vehicle to deflect air, airborne insects and debris upward and over the windshield, and, a detachable cover depending from the deflector to preclude insects and debris from entering the radiator, the detachable cover being either a non-perforated curtain to limit and control air flow through the vehicle radiator during cold weather operation, or a screen to provide full air flow during warm weather.