Abstract:
An improved, secure, anti-siphoning method and apparatus that can be fitted into any size fuel tank. The present invention includes a re-configured fuel cap that includes an electronic display, a touchpad for numerically inputting a security code for allowing a user to unscrew the fuel cap. In addition, a biometric reader is implemented to read a user&#39;s thumb print, and subsequently allowing the user to access the fuel tank.

Description:
FIELD OF INVENTION 
     This invention generally relates to preventing of fuel theft, and particularly to a method and apparatus for preventing siphoning of gasoline from a fuel tank of automobile, boats, motorcycles, trucks, and any other fuel tanks for internal combustion engines. 
     BACKGROUND OF THE INVENTION 
     Fuel tanks on vehicles and other motorized equipments, such as, motorcycles, farm equipments, tractor-trailers, boats, and personal aircrafts, generally has a fuel tank cover that can be easily opened, and a removable gas cap when filling the fuel tank. In certain instances, the fuel tank cover may be locked by closing it with a latch, or with a key. To access the fuel tank, it can be opened by pushing the cover in, using a key to unlock the cover, or by simply pulling the cover out. In later model vehicles, the fuel cover may be opened by raising a lever or pushing a button inside the vehicle, or in certain instances, the vehicle must first be unlocked, then the operator pushes on the cover to open it. For example, fuel thieves merely open the cover by simply pushing it in, and if the vehicle or the mechanized equipments is a late model that requires the gas cover to be opened from inside, thieves pry open the cover forcefully, and then siphoning the fuel. 
     With the increase in the prices of gasoline and other fuels, theft through siphoning has become a common problem for automobiles and other motorized equipments. Unattended vehicles and other mechanized equipments are vulnerable to fuel theft, where thieves simply push on the cover of the fuel tank, remove the fuel cap, and use a hose to siphon valuable and expensive fuel. 
     There are a myriad of attempts in circumventing fuel siphoning. U.S. Patent Application Publication Number 2012/0181275 (Bisaillon et al.) teaches an anti-siphoning device for fuel tanks, including an irremovable tubular body with an annular flange which is slidable into the neck of fuel tank for preventing insertion of a hose into the fuel tank. U.S. Patent Application Publication Number 2008/0156800 (Mougenot) teaches an antitheft and anti-overflow device for a fuel tank, including a plunger formed of a cylindrical retractable filling tube. U.S. Pat. No. 8,281,947 (Walkowski et al.) teaches an anti-siphon device, including among other pieces incorporated into the fuel tank, a check valve that allows fluid flow into the tank, and capable of blocking fluid flow out of the tank. The characteristics that all of the above-mentioned inventions share in common is that the fuel tanks have to be re-engineered and re-constructed, thus, increasing the cost of acquiring such a system 
     Accordingly, there is a need for an ingenious, less-complicated and less-costly way of circumventing today&#39;s fuel theft problems. 
     SUMMARY OF THE INVENTION 
     The present invention provides an improved, secure, anti-siphoning method and apparatus that can be fitted into any size fuel tank. The present invention includes a re-configured fuel cap that includes an electronic display, a touchpad for numerically inputting a code for allowing the operator to unscrew the fuel cap. 
     Another objective of the present invention allows the operator to program the fuel cap with a biometric fingerprint reader for allowing only the owner of the finger print to access the fuel tank. 
     Another objective of the present invention includes an electronic control system which when the operator inputs the correct numerical code into the touch pad, or scans in the correct finger print, unlatches a metal latch which is designed to keep the fuel cap from being un-corked. 
     While the novel features of the invention are set forth with, particularly in the appended claims, the invention, both as to its utility and ease of use, will be better understood and appreciated, along with other objects and features thereof, from the following detailed description and accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will be become more fully understood from the detailed description and accompanying drawings, wherein: 
         FIG. 1  is a prior art fuel tank cap normally found in vehicles and other mechanized equipments. 
         FIG. 2  is an improved fuel tank cap according to an embodiment of the present invention. 
         FIG. 3  is a fuel tank cap including a touchpad screen and a biometric finger print reader according to an embodiment of the present invention. 
         FIG. 4  is a schematic diagram of an electronic module for controlling access to the fuel tank cap, according to an embodiment of the present invention. 
         FIG. 5  is flow chart illustrating method steps for accessing the fuel tank cap by inputting a numerical code, according to an embodiment of the present invention. 
         FIG. 6  is a flow chart illustrating method steps for accessing the fuel tank cap by a biometric reader, according to an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The following description is intended to convey an understanding of the invention by providing a number of specific embodiments and details involving various applications of the invention. It is understood, however, that the invention is not limited to these embodiments and details, which are only exemplary. It is further understood that one possessing ordinary skill in the art, in light of known apparatuses and methods, would appreciate the use of the invention for its intended purposes and benefits in any number of alternative embodiments, depending upon specific design and other needs. 
     Referring to  FIG. 1 , there is shown a front view of a prior art fuel tank cap  110  (which may be inter-changeably referred to as a gas cap). As can be seen from the figure, the front part includes a raised middle section  115  that aids in getting a leverage to open or close the gas cap. 
     In one embodiment of the present invention, and referring to  FIG. 2 , there is shown an improved gas cap  210 . The improved gas cap  210  comprises curved sides  220  for facilitating leverage in opening or closing a fuel tank; the improved gas cap  210  with the curved sides design  220 , allows the area covered by the face of the gas cap  210  which is made of plastic to be utilized for other purposes, including incorporation of access control (explained in the ensuing paragraphs) that grants access to a fuel tank to only those users that are allowed access. 
     In another embodiment and in reference to  FIG. 3 , the improved gas cap  310 , allows incorporation of an electronic display  315  for displaying inputted four-digit code by a user and including a touch-screen keypad  325 , a “Set” button  350  for pressing to set the initially inputted four-digit code of the user, a green LED  330 , for indicating to the user that the inputted four-digit code is the correct code, and a red LED  335 , for indicating to the user that the inputted four-digit code is an incorrect code. The display  315  also includes an enter “E” button  345 , for pressing when the user inputs a code, and a reset “R” button  340 , for resetting the display  315  to accept a newly entered four-digit code. Furthermore, the improved gas cap  310 , includes a biometric reader  360 , for initially reading a thumb print of the user, and subsequently reading the thumb print of the user for verifying whether the thumb print is that of the user or not, and display  325  for displaying information that the thumb print is the correct thumb print, and at the same time lighting up a green LED  330 , to indicate that the thumb print is the correct one, and lighting a red LED  335 , to indicate that the thumb print is an incorrect thumb print. In order to allow access to more than one individual of a family, or employees of a company that may use any motorized equipment that incorporates the gas cap of the present invention, each individual may initially record their thumb print, and/or create a four-digit access code. Additionally, and in the event the motorized equipment that has the improved gas cap of the present invention, is transferred to another owner through a sale, or gifted to another, the saved four-digit, and the recorded thumb print may be erased by holding the reset “R” button  340  of  FIG. 3  for 10 seconds, and then they may input a four-digit code given by a controlling entity such as, for example, a manufacturer of the motorized equipment, or a security company that may control access. Afterwards, the new owners of the motorized equipment may set their own four-digit code, and/or record their thumb print. 
     Referring to  FIG. 4 , the present invention includes a controller  400 , for controlling access to the fuel tank. Controller  400 , includes a power source  401 , such power source is from the electrical harness of a motorized equipment (such as cars, trucks, motorcycles, boats, personal airplanes, etc.), via connection  405 . An electronic access module  410 , controls access of users to the fuel tank by receiving a four-digit code from keypad  415 , or a thumb print from finger print reader  440 , transmit the received data (four-digit code or thumb print) to a memory module  420 , where the original four-digit code and the original thumb print of the user are stored. If the correct four-digit code and the original thumb print returned from the memory module  420 , a green LED comes on at indicator light  435 , indicating that the inputted data is correct. If the four-digit code and the original thumb print returned from the memory module  420  is incorrect, a red LED comes on at indicator light  435 , indicating that the inputted data is incorrect. Once the green LED comes on and the inputted data is verified to be authentic, the electronic control module  410  transmits a signal to a solenoid  425 , which in turn activates a latch  430 . The latch  430  locks onto a threaded portion (not shown) of the gas cap when activated and in a lock mode. Once the correct four-digit code and the original thumb print is verified, and a deactivated signal is transmitted to the solenoid  425 , the solenoid  425  transmits a deactivate signal to the latch  430  to remove it from the threaded portion of the gas cap. 
     Referring now to  FIG. 5 , the user begins the process at step  501 , moves on to step  502 , by registering a four-digit security code. Then when the user subsequently intends to access the gas tank, the user enters a four-digit security code in step  503 , when the controller of  FIG. 4  ascertains that the inputted four-digit security code is the correct one in step  505 , the user is allowed access to the gas cap in step  506 , and may open the gas cap in step  507 . When the controller of  FIG. 4  ascertains that the inputted four-digit security code is an incorrect one in step  505 , the system is reset to allow the user to once again attempt to input the correct four-digit security code. If the user inputs the correct four-digit security code in step  503 , during an ensuing attempt, the user is allowed access to the gas cap in step  506 , and may open the gas cap in step  507 . The system gives user four successive tries to input the correct four-digit security code, and if the user fails to supply the correct four-digit security code, the system locks the user out. 
     Referring to  FIG. 6 , the user begins the process at step  601 , moves on to step  602 , by registering a biometric thumb scan. Then when the user subsequently intends to access the gas tank, the user lays an original thumb print  603  on a biometric reader, when the controller of  FIG. 4  ascertains that the biometrically read thumb print is the correct one in step  605 , the user is allowed access to the gas cap in step  606 , and may open the gas cap in step  607 . When the controller of  FIG. 4  ascertains that the biometrically read thumb print is an incorrect one in step  605 , the system is reset to allow the user to once again attempt to input the correct biometrically read thumb print. If the user inputs the correct biometrically read thumb print in step  603 , during an ensuing attempt, the user is allowed access to the gas cap in step  606 , and may open the gas cap in step  607 . The system gives user four successive tries to input the correct biometrically read thumb print, and if the user fails to supply the correct biometrically read thumb print, the system locks the user out. 
     While the invention has been described by reference to certain preferred embodiments, it should be understood that numerous changes could be made within the spirit and scope of the inventive concept described. Also, the present invention is not to be limited in scope by the specific embodiments described herein. It is fully contemplated that other various embodiments of and modifications to the present invention, in addition to those described herein, will become apparent to those of ordinary skill in the art from the foregoing description and accompanying drawings. Thus, such other embodiments and modifications are intended to fall within the scope of the following appended claims. Further, although the present invention has been described herein in the context of particular embodiments and implementations and applications and in particular environments, those of ordinary skill in the art will appreciate that its usefulness is not limited thereto and that the present invention can be beneficially applied in any number of ways and environments for any number of purposes. Accordingly, the claims set forth below should be construed in view of the full breadth and spirit of the present invention as disclosed herein.