Abstract:
An apparatus for propelling an object by pneumatic air flow along one or more individual track sections utilizing a unique air controller providing a conduit for entrance of the object thereinto and an exit as well as a switching means for moving the object from one track to another and for maintaining uniform flow such that the object continuously moves through the tracks and the tunnel defined in the air controller therefore. The design includes a unique directional flow tapered air inlet for receiving air under pressure from an air pressure chamber for the main powering pneumatically of an object through the propulsion track. Also included is a uniquely configured object which may include a decorative body externally thereon for aesthetics. An air recycling chamber is included for minimizing the effects of back pressure and maximizing efficiency of operation of the object. This device could be used for amusement purposes or commercial purposes. It also includes a variable air input control for the main blower for customizing the action thereof based upon the parameters of the pneumatic track and object being utilized.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention pertains generally to the field of track mounted devices. Such devices historically have primarily comprised trains mounted on tracks. Such designs can be utilized for advertising, monitoring or amusement or as play things for young and old alike. They can be used commercially for advertising and attention gathering. They can be used for side-by-side racing when more than one individual tracks are provided adjacent one another. They can be formed in planer 2-dimensional arrangements similar to train track designs or can be configured with track segments in three dimensions similar to a roller coaster. The same blower can be utilized to provide pressurized air to both tracks to save on expenses and to equalize such competition. More particularly the present invention deals with a pneumatic track powered by pressurized air flow therethrough for moving of an object therealong as desired through one or more track sections. The present invention provides a unique system for controlling the movement of the object and maintaining fully effective and efficient operation thereof. 
     2. Description of the Prior Art 
     Numerous prior art devices have been patented for various track related and particularly pneumatically powered track related device which are distinguishable from the present invention such as U.S. Pat. No. 2,128,690 patented Aug. 30, 1938 to M. L. Burke et al on a “Pneumatically Operated Educational Game”; and U.S. Pat. No. 2,571,081 patented Oct. 9, 1951 to J. C. Wilson on a “Pneumatic Racing Game Apparatus”; and U.S. Pat. No. 2,630,320 patented Mar. 3, 1953 to R. N. Francis on a “Racing Game Device”; and U.S. Pat. No. 3,224,771 patented Dec. 21, 1965 to F. A. Altieri and assigned one-half to Charles Trivinia on a “Fluid Pressure Drive Racing Game Apparatus”; and U.S. Pat. No. 3,466,043 patented Sep. 9, 1969 to L. H. McRoskey et al and assigned to Republic Tool &amp; Manufacturing Corp. on “Combined Passing Race Track And Self-Propelled Vehicles”; and U.S. Pat. No. 3,630,524 patented Dec. 28, 1971 to J. Cooper et al on a “Racing Game With Selectively Actuated Lane Switching Members”; and U.S. Pat. No. 3,643,953 patented Feb. 22, 1972 to J. S. Fixler and assigned to Industrial Patent Development Corp. on a “Fluid Pressure Operated Game”; and U.S. Pat. No. 3,697,071 patented Oct. 10, 1972 to J. E. Anderson on a “Fluid Actuated Track System With Constant Flow Valve”; and U.S. Pat. No. 4,070,024 patented Jan. 24, 1978 to N. Hamano and assigned to Tomy Kogyo Co., Inc. on a “Continuous Racetrack Having Vehicle Accelerating Device”; and U.S. Pat. No. 4,091,562 patented May 30, 1978 to C. Kimura and assigned to Okuma Seisakusho Co. Ltd. on a “Toy Railway System”; and U.S. Pat. No. 4,209,935 patented Jul. 1, 1980 to H. Parker on an “Apparatus For Rocket Sled Game”; and U.S. Pat. No. 4,229,005 patented Oct. 21, 1980 to G. A. Barlow et al and assigned to Gordon Barlow Design on a “Track Racing Game”; and U.S. Pat. No. 4,283,053 patented Aug. 11, 1981 to H. Parker et al on an “Air Powered Rocket Sled Game”; and U.S. Pat. No. 4,458,602 patented Jul. 10, 1984 to W. Vandersteel on a “Pneumatic Pipeline Transport System”; and U.S. Pat. No. 4,725,256 patented Feb. 16, 1988 to J. J. Sassak on a “Pneumatic Construction Game”; and U.S. Pat. No. 4,925,188 patented May 15, 1990 to R. S. McKay et al on a “Toy Race Track And Lap Counter”; and U.S. Pat. No. 4,963,116 patented Oct. 16, 1990 to J. J. Huber on a “Race Water Track Toy”; and U.S. Pat. No. 5,326,301 patented Jul. 5, 1994 to J. C. Woodside on an “Air Propelled Toy Dragster Car”; and U.S. Pat. No. 5,441,434 patented Aug. 15, 1995 to K. B. Caulkins on a “Magnetic Conveyance System”; and U.S. Pat. No. 5,538,453 patented Jul. 23, 1996 to L. G. Johnson on an “Air Pressure Toy Rocket Launcher”; and U.S. Pat. No. 5,584,614 patented Dec. 17, 1996 to S. H. Aidlin et al on an “Air Handling System For A Pneumatic Conveyor”; and U.S. Pat. No. 5,651,736 patented Jul. 29, 1997 to J. D. Myers on a “Racer Toy Utilizing Water-Driven Boats”; and U.S. Pat. No. 5,658,198 patented Aug. 19, 1997 to Y. Nagasaka et al and assigned to Imagic, Inc. and Tomy Co., Ltd. on a “Pneumatic Running Toy”; and U.S. Pat. No. 6,062,773 patented to J. F. Oullette on May 16, 2000 and assigned to Oullette Machinery Systems, Inc. on an “Infeed Assembly For Use With An Air Conveyor System”; and U.S. Pat. No. 6,089,951 patented Jul. 18, 2000 to E. Ostendorff and assigned to Mattel, Inc. on a “Toy Vehicle And Trackset Having Lap-Counting Feature”. 
     SUMMARY OF THE INVENTION 
     The present invention provides a propulsion track apparatus including an object designed for movement therealong. This construction of this object preferably includes a first frame and a second frame maintained spatially disposed therefrom and flexibly resiliently movable with respect thereto by an interconnecting frame suspension such as a spring or other flexibly resilient member. This spring will maintain the first and second frames flexible with respect to one another and also slightly spatially disposed from one another to aid in such flexibility. Each of the frame means includes a wheel means rotatably mounted thereon to facilitate guiding of movement thereof through the pneumatic track and through the air tunnel. Preferably the first frame will include four such individual wheels and the second frame will include four additional such wheels to aid in this movement. 
     The pneumatic track of this apparatus extends generally longitudinally between a starting end and a terminating end in such a manner as to provide a path for movement of the object therealong. The pneumatic track includes an enclosed pneumatic conduit as the preferred construction thereof. The pneumatic track also includes a track air relief device which is positioned therein which is designed to allow excess air flow pressure within the track to be expelled. The track air relief means preferably will include a plurality of longitudinal slots defined therein extending longitudinally approximately parallel to the pneumatic track at a position adjacent to the starting end thereof. Preferably seven or some other odd number of longitudinal slots will be included in order to prevent interaction or engagement thereof with respect to the even number of wheels in the object to prevent interaction between the object and the longitudinal slots themselves. 
     The pneumatic track itself will preferably also include two individual track sections connected in parallel with respect to one another defined preferably as a primary track and a secondary track. At least one wide section will be positioned immediately upstream of the terminating end of the pneumatic track to urge movement of the object means to the track inlet irrespective of whether the object is moving within the primary section or the secondary section thereof. 
     A uniquely configured air control device is also preferably included in the present invention which is designed to be connected to the pneumatic track for the purpose of providing a continuous supply of pressurized air thereto in a controlled manner in order to continuously and effectively urge movement of the object therealong. 
     The air control device preferably includes an air control housing which defines a track inlet defined therein which is connected with respect to the terminating end of the pneumatic track to be in fluid flow communication therewith. In a similar manner a track outlet is defined by the air control housing spatially disposed from the track inlet and connected with respect to the starting end of the pneumatic track to be in fluid flow communication therewith. This air control device can be connected to more than one set of pneumatic tracks for the purpose of driving more than one object therethrough for providing the capability of side-by-side competitive racing using a single air control system. The system could include separate speed controls to aid in providing a competitive racing device. 
     An air tunnel is defined within the air control device which extends from the track inlet to the track outlet for maintaining fluid flow communication therebetween within the air control housing. In this manner the housing through the air tunnel will allow the object to move from the track inlet to the track outlet and then throughout the pneumatic track itself. 
     The air tunnel can preferably include an air recycling orifice therein to facilitate movement of the air into an air recycling chamber if necessary. The air tunnel preferably will include an inwardly tapered surface area immediately upstream from the air recycling orifice to urge an object passing therethrough to move toward the center of the air tunnel as it passes by the air recycling orifice in order to minimize contact and interaction therebetween. 
     The air control housing preferably further defines an entrance opening therein which facilitates the introduction of the object into the pneumatic track by movement thereof into the air tunnel. An entrance conduit is also included extending from the entrance opening to the air tunnel to facilitate movement of the object into the air tunnel and then into the pneumatic track. 
     A blower chamber is also defined within the air control means which defines a blower inlet and a blower outlet therein. A blower means is included to be positioned within the blower chamber which is adapted to draw air into the blower chamber through the blower inlet and to expel air flow under pressure therefrom outwardly through the blower outlets. One such blower outlet can supply air to a first set of pneumatic tracks and a second pneumatic track set can be attached to the other blower outlet to receive pressurized air therefrom for competitive racing side-by-side. The use of a single blower will aid in equalizing such a competitive usage. 
     An air pressure chamber is in fluid flow communication with respect to these blower outlets in order to facilitate the receiving of air flow under pressure therefrom. The air pressure chamber is positioned extending around the air tunnel means to provide pressurized air in the area immediately surrounding the air tunnel to aid in the flow of pressurized air thereinto. The flow of pressurized air into the air tunnel is achieved by the positioning of a directional flow tapered air inlet in the air tunnel within the air pressure chamber. 
     The directional flow tapered air inlet will be inclined from the track inlet toward the track outlet to facilitate introducing of pressurized air therethrough into the air tunnel to aid in propelling of objects therethrough in the direction from the track inlet toward the track outlet and urging movement of the object along the pneumatic track from the starting end thereof to the terminating end. 
     The directional flow tapered air inlet preferably includes a first angled tapered edge which is circular in shape and is defined in the air tunnel. It also preferably includes a second angular tapered edge which is circular in shape and is defined in the air tunnel spatially disposed from the first angular tapered section in order to define an annulus means therebetween which is inclined in the direction of movement of the object therethrough from the track inlet toward the track outlet. In this manner propulsion thereof will be facilitated along the air tunnel. The second angular tapered edge is movable relative to the first angular tapered edge in such a manner adjustably in order to vary the size of the annulus defined therebetween to vary the magnitude of air flow under pressure therethrough. Furthermore the annulus can be adjustably positioned to be completely closed under some circumstances for example in order to facilitate the supply or more air for a certain temporary period of time to be supplied through another flower outlet for powering of a different section of the pneumatic track or for powering a separate pneumatic track. 
     An outer sleeve may preferably be included which is movably mounted with respect to the air tunnel with the second angular tapered edge defined thereon such that the size of the annulus is variable responsive to relative movement of the outer sleeve with respect to the air tunnel to control the magnitude of air flow therethrough. This outer sleeve can be movable with respect to the air tunnel by being threadably engaged in the air control housing or by being tightly fitted to the outside diameter of the air tunnel and movable under force at various positions therealong. 
     A pressure release valve may be included extending from the air pressure chamber to the external ambient environment in order to facilitate the exhausting of air under pressure beyond the predetermined value to prevent excessive air pressure build up within the air pressure chamber. The pressure release valve also may include a one-way valve responsive to allow air only to exit from the air pressure chamber. Additionally, the pressure release valve can be adjustable to vary the level of air pressure that it is able to exhaust in order to in this manner provide a means for reducing or increasing the air under pressure within the track. In this manner the pressure release valve will operate similar to a throttle and can truly be used as a throttle by the individual making use of the pneumatic track apparatus of the present invention. Thus adjustment of the throttling of the pressure release valve can control the actual speed of movement of the object through the track. 
     An air recycling device may be included having an air recycling chamber defined within the air control body in fluid flow communication with respect to the air recycling orifice in the air tunnel to receive air flow pressure therefrom. The air recycling device may also include an air recycling conduit extending from the air recycling chamber to the blower inlet to allow air flow under pressure from the air recycling orifice flowing into the air recycling chamber to move on through the air recycling conduit to the blower inlet for recycling. 
     An adjustable suction cap may also be included positioned extending over the blower inlet to control the amount of air flow thereinto to further control the amount of air under pressure entering the air pressure chamber responsive to various different configuration of the pneumatic track. The adjustable suction cap is variable in order to increase or decrease the amount of atmospheric air drawn into the blower. The suction cap is operable when moved to a more closed position to create an input vacuum adjacent the input into the blower. Since the air recycling conduit flows into a location between the blower and the suction cap this vacuum will be experienced therein. This vacuum will tend to draw or suck air toward the blower from the air recycling chamber which is drawn from the air tunnel extending therethrough by being drawn therefrom through the air recycling orifice means. The movement of air in this manner exiting the air tunnel is very effective in eliminate deadspots. These dead spots are areas within the air tunnel or in the air track adjacent the air tunnel where the object can hesitate or stop due to inadequate air flow therethrough. Thus by careful adjustment in positioning of the suction cap these dead zones can be eliminated or at least minimized. 
     One or more removable caps may be included positioned detachably extending across the entrance opening for selectively sealing thereof to prevent the flow of air inwardly therethrough after the introduction of an object therethrough into the air tunnel. The removable cap may be responsive to excess air flow pressure within the air pressure chamber to allow air flow leakage outwardly there passed from the air pressure chamber and to relieve excessive back pressure. 
     A switching device may also be usable with the present invention which is attached with respect to the track outlet of the air control body and is attached with respect to the starting end of the pneumatic track. This switching means is movable between at least one or more recirculating positioned to allow the object to recirculate through the pneumatic track through a primary or secondary section thereof or through a second pneumatic track and an exit position which allows the object to exit for removal thereof from all pneumatic tracks. The switching device may include two or more such recirculating positions as needed based upon the configuration of the particular track. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which is easy to maintain. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which has a minimum amount of moving parts to minimize maintenance requirements. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which is capable of projecting an object through very sharply curved portions of the track due to the flexibly resilient frame construction and multiple wheels included in the object. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which does not include any small parts and, as such, can be easily and safely operated by young persons. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which can be utilized as an advertising or promotion vehicle for commercial purposes. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which can be formed with transparent track members to facilitate viewing of the object as it travels through the path. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which eliminates all problems associated with back pressure and in this manner provides a steady force to the object to maintain its continuous rapid movement through the pneumatic track and the air tunnel. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which can be configured to include two separate and distinct pneumatic tracks both of which can be supplied with air from one blower means having a divider which separates the outgoing air into two streams passing through two separate track outlets to facilitate competitive side-by-side racing as a utility of the present invention. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus wherein the pressure release valve can include a throttle means to provide instantaneous control of the purposeful release of pressurized air therethrough in order to function as a throttle for competitive racing modes of operation and other modes where use of such a throttle adds to the level or enjoyment or utility of the present invention. 
     It is an object of the present invention to provide a pneumatic propulsion track apparatus which can be utilized for advertising or promotional purposes or other commercial purposes as an attention grabber or for more utilitarian purposes such as use as a means of conveyance. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     While the invention is particularly pointed out and distinctly claimed in the concluding portions herein, a preferred embodiment is set forth in the following detailed description which may be best understood when read in connection with accompanying drawings, in which: 
     FIG. 1 is a schematic illustration of the pneumatic track of the pneumatic propulsion track apparatus of the present invention; 
     FIG. 2 is a perspective illustration of the air control means and switch means of an embodiment of the present invention; 
     FIG. 3 a side view of an embodiment of the air control body of the present invention showing in broken view the air recycling chamber and the air pressure chamber; 
     FIG. 4 is a showing of FIG. 3 along lines  4 — 4  to show the air recycling chamber and conduit more clearly; 
     FIG. 5 is a side plan view of an embodiment of the air pressure chamber; 
     FIG. 6 is an end plan view of FIG. 5; 
     FIG. 7 is a side cross-sectional view of a portion of the air control housing of the present invention illustrating in detail the configuration of the air recycling orifice and the inwardly tapered surface area within the air recycling chamber; 
     FIG. 8 is a perspective illustration of the air control means clearly showing the adjustable suction cap means; 
     FIG. 9 is a side cross-sectional view of a portion of the air control means showing the pressure release valve and the divider wall separating the air recycling chamber from the air pressure chamber; 
     FIG. 10 is a side plan view of the track air relief device of the present invention showing the longitudinal slots therein; 
     FIG. 11 a cross-sectional view of FIG. 10 along lines  11 — 11 ; 
     FIG. 12 is a perspective schematic illustration of an embodiment of the air control means of the present invention; 
     FIG. 13 a top cross-sectional view of an embodiment of the switching device of the present invention; 
     FIG. 14 is a side view of FIG. 13 along lines  14 — 14 ; 
     FIG. 15 is a front plan view of an embodiment of an object of the present invention showing the dual frame construction spaced apart and flexibly movable with respect to one another by a flexibly resilient interconnecting frame suspension; 
     FIG. 16 is a top view of the object device shown in FIG. 15; and 
     FIG. 17 is a perspective illustration of a embodiment of a decorative body usable on a object. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The present invention provides a pneumatic track  10  designed to receive an object means  34  for traveling therethrough and recirculating therewithin. The pneumatic track  10  preferably includes a starting end  12  and a terminating end  14  wherein the object  34  moves from starting end  12  toward terminating end  14 . 
     The configuration of the pneumatic track  10  preferably is as an enclosed pneumatic conduit  16  which preferably is made of clear material to facilitate viewing of the object as it travels therealong. The pneumatic track  10  preferably will include a track air relief means  18  somewhat close to the starting end  12  thereof to facilitate the release of excessive air flow pressure within the track. This air relief  18  is provided preferably through a plurality of longitudinal slots  20  defined in the tubular track air relief member  18 . Preferably such longitudinal slots  20  are seven in number but can be any number as desired. 
     The pneumatic track  10  preferably includes a primary track section  22  and a secondary track section  24 . A switching means  28  is positioned immediately adjacent to the starting end  12  of the pneumatic track  10  and is movable between one or more individual recirculating positions to urge movement of the object after it passes through the switch  28  to move to one or more of the individual sections of pneumatic track  10 . Additionally the switch  28  will preferably include an exit position  32  to which it can be moved in order to allow removal of the object  34  from the pneumatic track  10  entirely. 
     A y-section  26  can be included adjacent to the terminating end  14  of the pneumatic track  10  for the purpose of gathering an object traveling in either section of the pneumatic track  10  to move to the terminating end  14  and on into the air control means  58 . One y-section is needed for a pneumatic track  10  which includes two individual sections and an additional y-section is needed for each additional section included thereafter. 
     The object  34  preferably is of a specific construction in order to facilitate movement thereof in a continuous manner subject to air pressure thereagainst through the pneumatic track  10 . The object  34  preferably includes a first frame  36  and a second frame  38 . A frame suspension means  40  is included preferably being flexibly resilient and most preferably being a flexibly resilient spring which will maintain the first frame and the second frame  36  and  38  somewhat spaced apart and flexibly resiliently movable with respect to one another. The first frame  36  will include a first frame wheel means  42  adapted to engage the interior of the enclosed pneumatic conduit  16 . Similarly the second frame  38  will include second frame wheels  44  also adapted to engage the interior of the enclosed pneumatic conduit  16  of the pneumatic track  10 . First frame wheels  42  will preferably include four individual first frame wheels  46 . In a similar manner second frame wheel means  44  will include four individual second frame wheels  48 . The number of wheels can vary however the preferred configuration is to have eight total wheels for the object  34 . The first frame wheels  46  are mounted upon first axle means  50  on the first frame  36 . The second frame wheels  48  are mounted on the second axle means  52  of the second frame  38 . 
     In operation the movement of the object  34  throughout the track is enhanced due to the flexibly resiliently mounted relationship between the first frame wheels  46  and the second frame wheels  48 . This flexibility will allow the object to distort slightly as it travels through curved portions of the enclosed pneumatic conduit  16  in order to prevent binding and more freely and easily move therealong. The air control means  58  of the present invention includes an air control housing  60 . Housing  60  will define a track inlet  62  for receiving the terminating end  14  of pneumatic track  10 . Track outlet  64  will define a point of attachment for the switching means  28  or the track air relief device  18 . However it will be attached indirectly or directly with respect to the starting end  12  of pneumatic track  10 . An air tunnel  66  extends from track inlet  62  to track outlet  64  for maintaining fluid flow communication and providing a path therebetween for movement of the object  34  therethrough. 
     An entrance opening  72  is defined in the air control housing  60  which is adapted to receive the object  34  placed therein for movement toward the air tunnel  66  and on into the pneumatic track  10 . An entrance conduit  74  extends from the entrance opening  72  to the air tunnel  66  to allow object  34  to move thereinto. 
     A blower chamber  76  is defined within the air control housing  60  and defines a blower inlet  78  for receiving air therethrough and a blower outlet  80  for expelling air outwardly therefrom. A blower or other motor device  82  is positioned within the blower chamber  76  and is adapted to draw air inwardly through the blower inlet  78  and expel air outwardly through the blower outlet  80 . 
     Blower outlet  80  is connected to an air pressure chamber  84  defined within the air control housing  60 . Air pressure chamber  84  is defined to receive air flow under pressure from the blower outlet by operation of the blower  82  such that the air within the air pressure chamber  84  will flow therein and be pressurized therewithin. 
     The air pressure chamber preferably will be positioned extending adjacent to or, preferably in this configuration, surrounding the air tunnel  66  at the point where the air tunnel defines a directional flow tapered air inlet  86 . This directional flow air inlet  86  will be adapted to receive pressurized air flow therethrough from the air pressure chamber  84  for supplying of pressured air into the air tunnel  66  for urging movement of the object  34  through the air tunnel  66  and thereafter through the pneumatic track  10 . 
     The directional flow tapered air inlet means  86  is defined as the annulus  92  positioned between the first angular tapered edge  88  and the second angular tapered edge  90 . This design is most clearly shown in FIGS. 5 and 9. It is also preferable that the size of this annulus  92  be variable in order to vary the amount of air introduced into the air tunnel  66  for powering of various different configurations and sizes of the pneumatic track  10 . The size of the annulus  92  can be changed to zero wherein no air flow therethrough is possible. This adjustable position would usually be for the purpose of supplying greater quantities of air to another pneumatic track section or to another pneumatic track being used currently. 
     For this purpose the size of the annulus  92  can be adjustable by various means. One such means would be the movement of the second angular tapered edge  90  relative to the first angular tapered edge  88  thereby increasing or decreasing as necessary the size of the annulus  92  and therefore the air flow under pressure therethrough. This preferred configuration is shown in FIG. 5 by the inclusion of an outer sleeve member  94  which is movable longitudinally with respect to the air tunnel  66 . Since the outer sleeve  94  defines the second angular tapered edge  90  thereon, movement of this outer sleeve means  94  relative to the air tunnel  66  will cause a change in the total cross-sectional air flow area of the annulus  92 . This outer sleeve means  94  can be movable relative to the air tunnel  66  by being threadably engaged to the external surface of the air tunnel or can be merely a tight fit on the outside diameter of the air tunnel  66  in such a manner as to be forcibly slidable therealong. 
     The present invention also includes a pressure release valve  96  which is defined to release any excess pressure created within the pneumatic track  10  and within the air tunnel  66  as necessary. This is a one-way valve allowing flow only outwardly from the interior portion of the pneumatic track  10  and air tunnel  66  to the external ambient environment. 
     An air recycling means  98  may also be included and has an air recycling chamber  100  defined adjacent the air tunnel  66  at a point within the air control housing  60  upstream from the air pressure chamber  84 . This air recycling chamber  100  will be positioned adjacent to the air tunnel  66  at a position where the air recycling orifice means  68  is defined in the air tunnel  66 . This orifice is adapted to allow excessive air pressure within the air tunnel  66  immediately adjacent the air recycling chamber  100  to be expelled therethrough and thereafter move through the air recycling conduit  102  to be supplied through the blower inlet  78  for recycling of the air to the blower  82 . This air movement will help eliminate dead zones caused by back pressure and will facilitate continuous movement of the object as it passes through the air tunnel at the position therein where the directional flow tapered air inlet  86  is located. Furthermore this amount of vacuum created within the air recycling conduit  102  can be varied by selective positioning of the adjustable suction cap  104 . Positioning cap  104  such that increased suction or vacuum is created adjacent the input of blower  82  will cause suction to extend through air recycling conduit  102  thus drawing air under pressure through air recycling orifice  68  from within air tunnel  66  thereby further reducing the possibility of experiencing any deadzones as object  34  moves therethrough. 
     As the object  34  passes by the air recycling orifice  68  it is important that interaction between the object and particularly the wheels of the object and the air recycling orifice  68  be minimized. To achieve this inwardly tapered surface areas  70  are positioned within the air tunnel  66  immediately upstream from the air recycling orifice  68  to move the object  34  to the centralmost portion of the air tunnel  66  as it passes by the air recycling orifice  68 . The male end of the air tunnel  66  also has tapered areas  71  as shown in FIG. 7, which are spatially disposed from the inwardly tapered surface areas  70  to define an narrow open area in the air tunnel  66 . In this manner contact or engagement between the air recycling orifice  68  and the object  34  will be minimized and most likely eliminated. 
     The present invention may include an adjustable suction cap  104  means positioned extending over the blower inlet  78  of blower chamber  76 . This adjustable suction cap  104  is operative to move or rotate in some manner as to control the total volume of air made available through the blower inlet  78  to the blower  82  for movement thereof into the air pressure chamber  84 . This adjustable suction cap  104  will preferably have various positions pre-set as necessary for different track configurations and/or sizes and/or shapes. These setting will each provide a different vacuum or suction applied through the air recycling conduit  102  which will draw different volumes and flows of air therefrom from the air tunnel  66  through air recycling orifice  68 . Thus the positioning of the suction cap means  104  can be prechosen for various configurations of possible shapes of the track  10  of the present invention such that deadzones are minimized under each of the many different possible track configurations. 
     Removable cap members  106  may be included in the present invention positioned over the entrance opening  72  to eliminate movement of air therethrough into the air tunnel  66  except during those times when an object  34  is being introduced therethrough. Preferably the removable caps  106  will also be responsive to pressurized air flow through the entrance conduit  74  to slightly dislodge to from the entrance opening  72  and release pressure externally therefrom. This will be an important supplemental source of pressured relief. 
     The objects  34  used with the present invention may preferably include decorative bodies such as  108  on the exterior surface thereof to facilitate aesthetic enjoyment of the pneumatic propulsion track apparatus of the present invention. Also, the switching device  28  of the present invention preferably will include an exit hole  110  to allow the objects  34  to be expelled from the pneumatic propulsion track apparatus. 
     In a preferred configuration as shown best in FIGS. 3,  7  and  9  the air recycling chamber means  100  will extend around the air tunnel means  66  and the air pressure chamber area  84  will also extend around the air tunnel  66 . Preferably, as shown in these drawings, the air pressure chamber  84  will be immediately downstream from the air recycling chamber  100 . These chambers can be similar in shape and are preferably separated by a divider wall  112 . 
     While particular embodiments of this invention have been shown in the drawings and described above, it will be apparent, that many changes may be made in the form, arrangement and positioning of the various elements of the combination. In consideration thereof it should be understood that preferred embodiments of this invention disclosed herein are intended to be illustrative only and not intended to limit the scope of the invention.