Abstract:
The remote-controlled air, land or water borne toy vehicle comprises: a body; a printed circuit board mounted in or to the body; a receiver connected to the printed circuit board for receiving commands; hardware on the printed circuit board including control circuitry for manipulating the toy vehicle in response to commands received by the receiver; and a motor drive mechanism mounted on or to the toy vehicle for moving or propelling the toy vehicle in response to control signals from the control circuitry. Preferably at least one of several infrared emitting simulated weapons are mounted on the toy vehicle and are selected from the group including a machine gun, a cannon and a missile.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates to a radio controlled toy blimp and to a method for constructing a remote-controlled toy blimp for amusement purposes having circuitry capable of firing and detecting infrared light beams bearing specific codes. Two or more such toy blimps can then be used to stage a simulated battle for entertainment purposes. Several weapons are available to each toy pilot. A “light artillery” simulates a machine gun which inflicts minor damage to a toy blimp, requiring a high number of hits to disable the opponent&#39;s toy. A “heavy artillery” simulates a large caliber cannon which inflicts heavier damage than light artillery, requiring less hits to disable the opponent&#39;s toy blimp. An “explosive missile” is the most damaging weapon requiring only a single hit to disable the opponent&#39;s toy. A red lamp in the opponent&#39;s toy will flash when a successful “hit” is made.  
           [0003]    When the required number of hits to disable the opponent&#39;s toy is reached, the opponent&#39;s toy will automatically engage in an “out of control” maneuver, such as erratic motion to simulate a disabled vehicle. Also, the red lamp will flash continuously for a pre-set time to indicate that the toy has been mortally wounded. In another aspect of this invention, an infrared wall target is provided for shooting practice.  
           [0004]    Each toy&#39;s gun can be set to transmit a different ID code so that the strikes of each player can be identified.  
           [0005]    An additional aspect of the present invention relating to a toy blimp, employs a single printed wired board to serve, in an unconventional manner, as the structural beams supporting all three flight motors while at the same time providing the conventional interconnections between all the electrical circuitry, significantly reducing the time and cost required to assemble a blimp.  
           [0006]    Also, relating to a toy blimp, a further aspect of the present invention provides for a “docking station” used for rearming and refueling the blimp. This docking station can be rendered out of order by the opponent&#39;s infrared weapons. Therefore, each pilot in addition to defending his/her blimp, must also defend his/her docking station to ensure rearming and refueling capabilities.  
           [0007]    A final aspect of the present invention provides for a mechanism for reducing the angle of the transmitted infrared beam in order to increase the level of difficulty required for hitting the target.  
           [0008]    2. Description of the Prior Art  
           [0009]    A number of new, state-of-the-art toy blimps have been developed for amusement purposes. These lighter-than-air blimps are filled with lighter-than-air gases, such as helium. Typically, a gondola is attached to the bottom, with reversible motor driven propellers whose thrust can be directed down for climbing or up for descending. By engaging one motor forward and the other in reverse, the blimp can rotate 360° or turn left or right.  
           [0010]    A search of the prior art brought to light the following US patents which disclose devices in the same general field of the present invention but without the unique and novel advantages of the present invention:  
           [0011]    U.S. Pat. No. 4,931,028: TOY BLIMP. This document discloses a toy blimp having at least one engine, and preferably two, mounted on the top side of an inflatable helium balloon-blimp like member, and an infrared control circuit and power supply mounted on the bottom side. A remote control transmitter with push buttons transmits an infrared control signal to a receiver in the balloon for horizontal and vertical flight control exclusively. This prior art device doesn&#39;t offer any capability for remotely controlled infrared weapons.  
           [0012]    U.S. Pat. No. 5,882,240: TOY BLIMP. This document discloses a toy blimp, including a gas filled body, a plurality of fins, a wind-up propulsion system consisting of a rubber band or a spring loaded motor, and small weight clips for buoyancy control. This prior art device doesn&#39;t offer any capability for remotely controlled infrared weapons.  
           [0013]    U.S. Pat. No. 4,891,029: REMOTE CONTROL LIGHTER-THAN-AIR TOY. This document describes a remotely controlled lighter-than-air toy having an inflatable container shaped as dirigible for holding lighter-than-air gas. A removable gondola is attached to the underside of the dirigible. This gondola has a first electric motor coupled, by means of gears, to a shaft passing through the gondola. A second and third reversible motors are mounted on each end of this shaft, on either side of the gondola. These second and third reversible motors drive propellers used provide forward and reverse thrust, thus providing horizontal flight control. The first reversible motor is used adjust the position of the shaft relative to the horizontal plane, thus providing vertical flight control. All three motors are remotely controlled by a conventional radio transmitter known to the art. This prior art device does not offer any capability for remotely controlled infrared weapons.  
         SUMMARY OF THE INVENTION  
         [0014]    The present invention relates to a remote-controlled air, land and/or water borne toy vehicles. For illustrations purposes only, a lighter-than-air toy blimp is used as an example to describe the teachings of this invention. The blimp includes conventional radio frequency remote control means known to the art for controlling vertical and horizontal flight patterns. A gondola is attached to the underside of the toy blimp which secures three reversible electric motors each having a propeller attached to its output shaft. Two of these motors are placed at each side of the gondola on a horizontal plane and are used to provide forward and reverse thrust. Also, steering is provided by placing one motor in reverse and the other in forward, or alternatively, turning off one motor while the other motor continues to run. The third motor is placed in the vertical plane under the gondola so that downward thrust of the motor pushes the blimp up or upward thrust pulls the blimp down.  
           [0015]    One unique aspect of this invention is the addition of innovative remote control means for firing infrared weapons to enhance the amusement capability of prior-art toy blimps beyond a simple remote controlled flight or free flight. These infrared digital signals contain a series of ones and zeros representing a specific binary code defining (a) the type of weapon fired, such as a machine gun, high caliber cannon or an explosive missile and (b) the ID of the blimp firing the weapon. Each blimp has at least one infrared transmitter and at least one infrared receiver. The transmitter is used by the attacking blimp to shoot infrared signals and the receiver is used by the blimp under attack to detect and decode those infrared signals striking the blimp. The attacking pilot must first arm the weapon of choice by selecting between machine gun, cannon or explosive missile in the remote control unit. Then when the attacking blimp is properly aimed at opponent&#39;s blimp or wall target, the user presses the trigger button in the remote control unit to shot the armed weapon. These different weapons operate as follows.  
           [0016]    Machine gun: Inflicts minor damage to the opponent&#39;s blimp. A high number of hits are required to shot down an opponent. A high quantity of ammunition is provided during arming prior to a “dog fight.” However, since this is a rapid firing weapon, the trigger must be used judiciously to avoid prematurely running out of ammunition.  
           [0017]    Cannon: Inflicts heavy damage to the stricken blimp. A lower number of hits are required to shot down the opponent&#39;s blimp. A low quantity of cannon rounds are available, therefore good aim is important.  
           [0018]    Explosive Missiles: A single hit causes the immediate shot down of the opponent&#39;s blimp. Each blimp is loaded with only three missiles. As a defensive measure, the pilot of the blimp under attack may temporarily activate a “radar shield” in order to become invisible to the incoming missile. However, the “radar shield” is only active for a short time after which a “wait time” must be observed prior to reactivation. This may allow the attacking missile to slip through and hit the opponent&#39;s blimp if the missile is fired within the inactive window of the “radar shield”. On the other hand, if a missile is fired when the “radar shield” is active, the attacking missile will miss the target and the attacker would have wasted one out of the three missiles available. The “radar shield” does not offer protection against machine gun or cannon shots.  
           [0019]    Reloading: After all ammunition are fired, full reloading of all weapons systems may be accomplished by landing the blimp at the “docking station.” Proper landing is confirmed by alignment between the electrical contacts at the bottom of the gondola and the corresponding contacts at the docking station. Once proper landing is confirmed, rearming commences and a preset waiting time must be observed for full reaming to take place. This may allow your opponent to shoot your blimp while it is rearming and/or refueling. If the full rearming time is not observed, partial rearming will occur and the next dog fight will be happen with a shortage of ammunition. When a blimp is finally shot down, the stricken blimp is forced into a “simulated crash maneuver” such as a fast descent. Additionally, a red lamp at the blimp will flash continuously to indicate a shot down situation.  
           [0020]    In another aspect of this invention, one or more blimps can be used to simultaneously attack a wall target. The wall target decodes the binary code identifying the attacking blimp and the weapon type reaching the wall target, then it updates the score displayed for the appropriate blimp. One point is scored for each machine gun hit, five points for each cannon hit and twenty points for each missile hit.  
           [0021]    In an additional aspect of this invention, each blimp is initially provided with a limited amount of time (fuel) used to power the blimp&#39;s motors. The blimp&#39;s microprocessor keeps track of the amount of time each motor is used. When the total allocated time is consumed, a yellow lamp under the gondola begins to flash continuously, indicating to its pilot that the blimp only has one more minute of motor power before it runs out of fuel. Then the blimp&#39;s pilot must land the blimp his/her “docking station” to refuel and rearm the blimp before it runs out of fuel. However, the opponent can destroy your docking station by shooting infrared weapons to it. Upon the number of hits reaching a preset number, a solenoid in the docking station is energized, causing the landing platform to collapse, thus preventing it&#39;s used for refueling or rearming.  
           [0022]    In a final aspect of this invention, the angle of the infrared beam transmitted used to simulate a weapon firing, can be adjusted by means of a tube having a reflective inner surface which is attached in front of the infrared transmitting diode. Tubes of different lengths can used to obtain different beam angles. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0023]    [0023]FIG. 1 is a perspective view of the remotely-controlled toy blimp  1  showing the blimp&#39;s gas filled body  2 , the gondola  3 , and the printed wired circuit board/chassis  4  integrating all three flight control motors  5 ,  6  and  7 . Also shown are the “low fuel” lamp  9 , the “hit lamp”  10  used to indicate a successful strike by the opponent, the infrared transmitter  11  used to shoot infrared weapons at (a) the opponent&#39;s blimp, (b) a wall target or (c) the opponent&#39;s docking station. Infrared detectors  12  and  13  which are employed to detect a direct hit by the opponent&#39;s infrared weapon are shown. Electrical contacts  14  and  15  which are used to confirm an on-target landing at the docking station and initiates rearming and refueling are shown. Also shown is the propeller  17  which is rotatably attached to the shaft of the motor  5 , the propeller  18  which is rotatably attached the shaft of motor  6  and the propeller  19  which is rotatably attached to the shaft of the motor  7  with the three reversible electric motors being used to control the direction and altitude of the blimp&#39;s flight.  
         [0024]    [0024]FIG. 2 is an exploded perspective view of the circuit board and gondola illustrating the assembly of the printed circuit board/chassis  4  and the gondola  3 . FIG. 2A is a block view of the Flight And Weapons Remote Control RF Transmitter, and FIG. 2B is a plan view of the Joy Stick Decoder, the Radio Frequency Transmitter and the Weapon Control Module.  
         [0025]    [0025]FIG. 3 is the electrical block diagram for the printed circuit board  4  of FIG. 2. Also shown is the remote control RF transmitter  25  which the pilot employs to transmit flight and weapons commands to blimp  1 . Further shown are the interconnections of all the electrical components, which additionally and unconventionally also serves as a structural beam to support all three flight motors, greatly reducing (a) the number of parts required, (b) the assembly time and (c) the cost of the toy blimp.  
         [0026]    [0026]FIG. 4A illustrates a wall mounted target  52  used for target practicing by one or two toy blimps.  
         [0027]    [0027]FIG. 4B illustrates the electrical block diagram employed in the wall mounted target  52 .  
         [0028]    [0028]FIG. 5A is a perspective view of the docking station  71  used for rearming and refueling the toy blimp.  
         [0029]    [0029]FIG. 5B illustrates the electrical block diagram employed in the docking station  71 .  
         [0030]    [0030]FIG. 6 illustrates the infrared beam angle reducer tube  95  employed to concentrate the infrared light emitted by infrared transmitter  11  into a narrow angle beam in order to increase the level of difficulty for hitting the target. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0031]    Referring now to the drawings in greater detail, a toy blimp  1  filled with lighter-than-air gas is illustrated in FIG. 1, having an inflatable body  2  that is shaped like a blimp and a gondola  3  attached under the body  2 . This gondola  3  accommodates the printed wired circuit board/chassis  4  which integrates all the circuitry required to decode and execute the flight and weapon commands (transmitted by RF transmitter  25  of FIG. 3), but also provides the structural support for the three flight motors  5 ,  6  and  7 . The horizontal flight motors  5  and  6  are located at the end of supporting beams which are sideways extensions of the printed wired board/chassis  4 . The vertical flight motor  7  is located at the bottom rearward extension of the printed wired circuit board/chassis  4 .  
         [0032]    When motors  5  and  6  are driven to provide rearward air flow, the blimp  1  is displaced forward. When motors  5  and  6  are driven to provide forward air flow, the blimp  1  is displaced backward. When the motor  5  is driven to provide rearward air flow and motor  6  is driven to provide forward air flow, the blimp  1  will turn to the right. When the motor  5  is driven to provide forward air flow and motor  6  is driven to provide backward air flow, the blimp  1  will turn to the left. When motor  7  is driven to provide downward air flow, the blimp  1  will ascend. When motor  7  is driven to provide upward air flow, the blimp  1  will descend. The printer wired circuit board/chassis  4  incorporates infrared detectors  12  and  13  which are used to detect a hit from the opponent&#39;s infrared weapon. Also, the printed wired circuit board/chassis  4  incorporates the infrared transmitter diode  11  which is used as a weapon to fire infrared light beams at the opponent&#39;s blimp. Additionally, the printed wired circuit board/chassis  4  incorporates a pair of electrical contacts  14  and  15  pointing downward which are used to confirm on-target landings at the “docking” station for rearming and refueling purposes. Lastly, the printed wired circuit board/chassis  4  incorporates lamp  9  to indicate a “low fuel” condition and lamp  10  to indicate a “hit” by the opponent&#39;s infrared weapon.  
         [0033]    Referring to FIG. 2, this is an exploded view illustrating the assembly of the printed wired circuit board/chassis  4  into gondola  3 . The gondola  3  is attached under the body  1  of the toy blimp by means of hook and loop strips  24  sold under the trademark VELCRO.  
         [0034]    An additional aspect of this invention, is that the printed wired circuit board/chassis  4  integrates two normally unrelated functions: (a) it is used to interconnect all the electrical components, such as battery  20 , resistors  22 , capacitors  23 , integrated circuits  21 , etc., and (b) also serves as the structural beam to mechanically support all three flight motors  5 ,  6  and  7 . This innovative application of a printed circuit board in a toy blimp significantly reduces the number of parts required to assemble a toy blimp, substantially reduces the assembly time and costs by eliminating many independent wires or harnesses and structural members while at the same time improving reliability and functionality.  
         [0035]    Referring to FIG. 3, it illustrates the electrical block circuit diagram for the printed wired circuit board/chassis  4  of FIG. 2. Briefly directing ones attention to the remote control RF transmitter  25 , this unit is used by the pilot to transmit flight and weapons commands to the blimp  1  of FIG. 1. The pilot uses joy stick  26  to change the direction and/or elevation of the blimp  1 . Also, the pilot presses push button  27  to select the weapon to be fired. A machine gun is selected when lamp  28  is lit. A cannon is selected when lamp  29  is lit. An explosive missile is selected when lamp  30  is lit. The pilot presses the trigger button  31  to fire the selected weapon. If the pilot suspects that the opponent is about to shoot a missile at his/her blimp, the pilot may activate a temporary “radar shield” on his blimp by pressing the shield button  33 . This “radar shield” makes his/her blimp invisible to the opponent&#39;s missile, causing it to miss his/her blimp. The “radar shield” is accomplished by temporarily suspending decoding of incoming missiles at the weapons control module  41 . The flight and weapons commands are transmitted from antenna  32  to antenna  34  where they are transformed into a series of binary ones and zeros by RF Receiver  35  and supplied via wire  36  to RF decoder  37  where they are assembled into distinctive binary codes representing flight and weapons commands. The flight commands are supplied via buss  38  to the flight control module  39  which interprets which motors,  5 ,  6  and /or  7  are to be energized and in what direction. Weapon commands are supplied via buss  40  to the infrared weapons control module  41  which interprets what infrared weapon is to be fired. Then weapons control module  41  supplies, via wire  45 , a burst of current pulses representing the weapon fired. These current pulses are supplied to infrared transmitter  11 , producing a series of infrared light flashes. The interval between flashes is modulated to denote a one or a zero. A unique code identifies the weapon type and is followed by a series of pulses each representing a single machine gun bullet, cannon shell or a missile. If the weapon is the machine gun, bullets continuously will be fired for as long as the pilot keeps the trigger button  31  depressed. If the weapon is a cannon, a single shell will be fired each time the trigger button  31  is pressed, but the trigger  31  must be first released and then depressed again to fire another shell. If the weapon is an explosive missile, one missile will be fired each time the trigger  31  is depressed.  
         [0036]    Now directing ones attention to the opponent&#39;s blimp, the infrared flashes fired by the attacking blimp are converted back into current pulses by infrared detector  8 . These current pulses are decoded by infrared amplifier  43  into a series of binary ones and zeros. These binary signals are then supplied via wire  44  to the weapons control module  41  for weapon identification and to count the number of successful hits. If the weapon fired by the attacking blimp was a machine gun burst, module  41  will count and record how many hits (flashes) it detected. If the existing count reaches or exceeds one hundred hits, the infrared weapons control module  41  will force the blimp into a “shot down maneuver” which is a steep and rapid descent.  
         [0037]    If the weapon fired by the attacking blimp was a cannon burst, the weapons control module  41  will count and record how many hits (flashes) it detected. If the current count reaches or exceeds fifteen hits, the infrared weapons control module  41  will force the blimp into a “shot down maneuver”. If the weapon fired by the attacking blimp was a missile, the infrared weapons control module  41  will immediately force the blimp into a “shot down maneuver”. Each time a hit is sensed by the infrared detector amplifier  43 , the weapons control module  41  will cause, via wire  45 , lamp  10  to light for a short duration to indicate a successful hit. During a “shot down maneuver” infrared weapons control module  41  will cause, via wire  46 , lamp  10  to flash continuously for a preset time to indicate that a lethal shot down has occurred.  
         [0038]    Referring to FIG. 4A, a wall mounted practice target  52  is shown. The unit is contained in an enclosure  53 . The unit may be hung from a nail in the wall by means of hook  54 . Wall target  52  incorporates an infrared detector  55  which detects a direct hit by an infrared weapon. One or more blimps can shoot infrared weapons at the target. Each infrared hit is decoded to identify the attacking blimp and the weapon fired. Then the score is updated at the corresponding display  56  or  57  in the wall target  52 . Each missile hit will add one hundred points to the corresponding score. Each cannon hit will add twenty five points to the corresponding score. Each machine gun hit will add five points to the corresponding score. Additionally, speakers  57  or  59  will emit a distinctive tone identifying the scoring blimp.  
         [0039]    Referring to FIG. 4B, it illustrates the electrical block diagram employed by the wall target  52 . When a direct hit by an infrared weapon strikes infrared detector  55 , the received infrared flashes are amplified and transformed by infrared amplifier  64  into a series of current pulses representing binary codes identifying both, the attaching blimp and the type of weapon fired. This information is passed, via wire  65 , to the score keeper μP  66  which decodes the information, updates the corresponding display  56  or  58  and sounds the appropriate speaker to identify the scoring blimp.  
         [0040]    Referring to FIG. 5A, this is a perspective view of the docking station  71  used for rearming and refueling the toy blimp  1 . The docking station  71  incorporates an infrared detector  81  which senses a direct infrared hit by the opponent&#39;s infrared weapon. The docking station  71  incorporates a solenoid  76  which is mechanically attached between pins  79  and  80 . Pin  79  is attached to the release lever  75  and pin  80  is attached to the base  72 . Platform  73  pivots at shaft  74  at one end while the other end normally rest on top of the release lever  75 . The bottom of release lever  75  is free to pivot at shaft  83  which connects the release lever  75  to the base  72 . Battery  82  provides the electrical power to energize solenoid  76 . Additionally, the docking station  71  incorporates the score keeper μP  86  which keeps a running score of the successful infrared hits made by the opponent&#39;s weapon and, as a secondary function, also confirms a proper landing by a blimp when electrical contacts  84  and  85  of docking station  71  mate with the electrical contacts  14  and  15  of blimp  1  in FIG. 1. A secondary function of mating contacts  84  and  14  is to send a partial or full rearming signal to the blimp  1 . Similarly, a secondary function of mating contacts  85  and  15  is to send a partial or full refuel to the blimp  1 . The low fuel lamp  9  will turn off only upon reaching a full fuel condition. Upon the running score reaching the “destruction threshold”, score keeper μP  81  will briefly energize solenoid  76 , pulling solenoid plunger  77  into its&#39; cylinder and compressing spring  78 . As the solenoid plunger  77  is drawn inside solenoid  76 , it will pull shaft  79  and release lever  75  towards the solenoid  76 . When the top of release lever  75  clears the end of the landing platform  73 , this end of the landing platform  73  will collapse under its&#39; own weight and jam in the down position between pin  79  and the upper bar of the release lever  75 . In this manner, the docking station  71  is rendered out of order for future rearming or refueling until the platform  73  is manually reposition on top of the release lever  75 . This requires that each pilot to not only protects his/her blimp but also his/her docking station as well.  
         [0041]    Referring to FIG. 5B, it illustrates the schematic block diagram used in the printed circuit board  87  for the docking station  71  of FIG. 5A. When the opponent&#39;s infrared light beam (weapon) hits infrared detector  81 , these signals supplied, via wire  89  to infrared amplifier  89  where they are amplified and shaped into current pulses representing a series of binary ones and zeros and supplied, via wire  91  to score keeper μP  86  which decodes and identifies the type of weapon fired and the number of successful hits made. Upon the running score reaching the “destruction threshold”, solenoid  76  is briefly energized which pulls, now in FIG. 5A, the release lever  75  away from under the landing platform  73  . This allows the landing platform  73  to collapse under its&#39; own weight, thus temporarily rendering the docking station out of order for future rearming or refueling until manually reset.  
         [0042]    It is understood that the same principles explained here can be applied to other types of remotely controlled toys, including model airplanes, boats and land vehicles.  
         [0043]    Referring to FIG. 6, this is a perspective view of the infrared beam angle reducer tube  95  used to concentrate the infrared light into a narrow beam in order to increase the level of difficulty required for hitting the target. The angle reducer tube  95  has a reflective inner surface  96 , such as a Millar, so that all of the infrared light emitted by infrared transmitter  11  is focused into a narrow beam. The actual diameter of the beam can be adjusted by changing the length of the tube  95 . A longer tube will produce a narrower beam and a shorter tube will produce a wider beam.  
         [0044]    From the foregoing description, it will be apparent that the toy blimp of the present invention includes the above described method of construction and use, circuitry, software, hardware, and mechanical mechanisms for providing: (a) a defensive shield, (b) infrared weapons of different types, (c) distinctive operation for each type of weapon, (d) adjusting the beam angle of the infrared transmitter weapon for varying the level of difficulty required for hitting the target, (e) structural supports for the flight motors incorporated into the printed circuit board, (f) a practice target with different audible tones to identify the hits made by each blimp and two displays to show the score for each attacking blimp, (g) software induced “shot down” maneuver upon reaching a specific number of hits, (h) a lamp to indicated a “shot” down condition, (i) a lamp to indicate a “low fuel” situation, and (j) a docking station for refueling and rearming. Also, it will be apparent that the present invention has a number of advantages, some of which are described above and others which are inherent in the invention. Further, it will be understood that modifications can be made to the invention without departing from the teachings of the invention, and that the teachings of the present invention can also be applied to other toy vehicles, such as land vehicles, toy boats and fast model airplanes.  
         [0045]    Accordingly, the scope of the present invention is only to be limited as necessitated by the accompanying claims.