PURGING TOOL WITH INTEGRATED PNEUMATIC VALVE

Abstract

A purging tool is disclosed that is operable to enable a user to utilize a pumping device to create an influx of air/pressure within a fuel tank to purge blockages with a fuel tank and associated fuel lines, herein after referred to as the fuel system. The purging tool comprises an integrated pneumatic valve operable to interface with a pumping device. The purging tool may further comprise a shape operable to be easily adapted to standardized fuel inlets.

Claims

1. A fuel cap device operable to interface with and seal a fuel inlet of a fuel system, the device comprising: a screw cap having a top surface having an integrated pneumatic valve that is operable to connect to a pumping device to a fuel system of a gasoline engine, wherein said pumping device is operable to provide an influx of pressurized air into said fuel inlet through said valve to purge any blockages in a fuel line of said gasoline engine fuel system.

2. The device of claim 1, wherein said blockages comprises solid debris from fuel oxidation within said fuel system.

3. The device of claim 1, wherein said blockages comprises air bubbles trapped within said fuel system.

4. The device of claim 1, wherein said pneumatic valve is a Schrader valve, Presta valve, check valve, or poppet valve allowing said pumping device to be attached to said fuel system with a fluid tight seal.

5. The device of claim 4, wherein said pumping device is a manual pump or an air compressor.

6. The device of claim 1, wherein said fuel system comprises a fuel tank and at least one fuel line in communication with said fuel tank.

7. The device of claim 1, wherein said gasoline engine is a two-stroke engine and said screw cap comprises an interior structure and threading that is complimentary to said fuel inlet.

8. The device of claim 1, wherein said gasoline engine is a four-stroke engine and said screw cap comprises threading that is complimentary to said fuel inlet.

9. The device of claim 1, wherein said fuel inlet is for a gasoline powered lawn mower, chain saw, leaf blower, or trimmer and said screw cap comprises an interior structure with a shape that is complimentary to said fuel inlet.

10. The device of claim 1, wherein said screw cap further comprises an integrated pressure gauge operable to monitor a pressure in said fuel tank.

11. A method of purging blockages within a fuel system comprising the following steps: a. providing a fuel cap operable to seal a fuel inlet of a fuel tank and comprising an integrated pneumatic valve operable to interface with a pumping device, b. attaching said fuel cap to said fuel inlet of a gasoline engine fuel system such that it creates an air-tight seal, c. attaching a pumping device to said pneumatic valve, and d. utilizing said pumping device to provide an influx of pressurized air into said fuel inlet to purge said blockages from said gasoline engine fuel system.

12. The method of claim 11, wherein said blockages comprises solid products from fuel oxidation within said gasoline engine fuel system.

13. The method of claim 11, wherein said blockages comprises air bubbles trapped within said fuel system.

14. The method of claim 11, wherein said pneumatic valve is a Schrader valve, Presta valve, check valve, or poppet valve allowing said pumping device to be attached to said fuel system with a fluid tight seal.

15. The method of claim 14, wherein said pumping device is a manual pump or an air compressor.

16. The method of claim 11, wherein said gasoline engine fuel system comprises said fuel tank and at least one fuel line.

17. The method of claim 11, further comprising the steps of: a. switching the fuel cap from a normal operation mode, wherein the fuel cap acts as a standard vented fuel cap, to a pumping mode before connecting said pumping device, and b. switching the fuel cap from said pumping mode to said normal operation mode once the blockages have been purged.

18. The method of claim 11, wherein said gasoline engine fuel system fuel inlet is for a device powered by a two-stroke engine and said fuel cap comprises and threading that is complimentary to said fuel inlet.

19. The method of claim 11, wherein said gasoline engine fuel system fuel inlet is for a device powered by a four-stroke engine and said fuel cap comprises an interior structure with a shape that is complimentary to said fuel inlet.

20. The method of claim 11, wherein said gasoline engine fuel system fuel inlet is for a gasoline powered lawn mower, chain saw, leaf blower, or trimmer and said fuel cap comprises and threading that is complimentary to said fuel inlet.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 shows a perspective view of an improved purging tool, according to an embodiment of the present invention.

[0019] FIG. 2 shows an environmental view of an improved purging tool being used on a power tool, according to an embodiment of the present invention.

[0020] FIG. 3 shows a front view of an improved purging tool, according to an embodiment of the present invention.

[0021] FIG. 4 shows a rear view of an improved purging tool, according to an embodiment of the present invention.

[0022] FIG. 5 shows a right side view of an improved purging tool, according to an embodiment of the present invention.

[0023] FIG. 6 shows a left side view of an improved purging tool, according to an embodiment of the present invention.

[0024] FIG. 7 shows a top view of an improved purging tool, according to an embodiment of the present invention.

[0025] FIG. 8 shows a bottom view of an improved purging tool, according to an embodiment of the present invention.

[0026] FIG. 9 shows a perspective view of an improved purging tool with the pneumatic valve cap removed, according to an embodiment of the present invention.

[0027] FIG. 10 shows a top view of an improved purging tool with the pneumatic valve cap removed, according to an embodiment of the present invention.

[0028] FIG. 11 shows an environmental view of an improved purging tool on a power tool, according to an embodiment of the present invention.

[0029] FIG. 12 shows the process of blockages within a fuel system being purged by an influx of air generated by the improved purging tool.

DETAILED DESCRIPTION

[0030] Reference will now be made in detail to certain embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in reference to these embodiments, it will be understood that they are not intended to limit the invention. To the contrary, the invention is intended to cover alternatives, modifications, and equivalents that are included within the spirit and scope of the invention as defined by the claims. In the following disclosure, specific details are given to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without these specific details.

[0031] As shown in FIG. 1 and FIG. 2, embodiments of the present invention provide an improved purging tool operable 100 to enable a user 201 to utilize a pumping device 202 to create an influx of air/pressure within a fuel system 203. The purging tool comprises an integrated pneumatic valve 101 operable to interface with a pumping device 202. The purging tool further comprises a shape operable to be easily adapted to the most commonly utilized fuel inlets 200.

[0032] As shown in FIG. 2 and FIG. 12, The present invention enables a user to connect pumping device 202 to the fuel inlet 200 and generate an influx of air 110 of sufficient pressure to purge blockages 205. In some embodiments, the purging tool may be operable to clear blockages caused by products of fuel oxidation such as gum and other viscous material. In some embodiments, the purging tool may be operable to clear blockages due to air bubbles 205, including air bubbles comprised of products of fuel oxidation. For example, the pressure generated by a pumping device 202 may burst air bubbles or push out gum that's clogging the fuel system. In some embodiments, the purging tool may be operable to clear blockages of debris created by corrosion and internal damage.

[0033] As shown in FIG. 9, the present invention comprises an integrated pneumatic 101 valve, with the pumping interface 104 located on the superior surface 102 of the purging tool. As shown on FIG. 8, orifice of the valve 105 is located on the inferior surface 103 of the purging tool. The valve 101 may be any pneumatic valve operable to utilize a pumping device to generate an influx of air of sufficient pressure to clear blockages, such as Schrader valve, Presta valve, check valve, poppet valve, or other appropriate valve design. In some embodiments, the pumping device may be a manual pump or compressor. In some embodiments powered/automatic pump or compressor. For example, as shown in FIG. 1 and FIG. 2, the pneumatic valve 101 may comprise a Schrader valve, wherein the pumping device 202 is a manual bike pump.

[0034] As shown in FIG. 8, the purging tool has an interior structure 106 that compliments that of the fuel inlet such that it creates an air-tight seal wherein only pneumatic valve 101 can adjust the pressure of the fuel system 203. In some embodiments, the interior structure 106 of the purging tool comprises a structure complimentary to that of a standardized fuel inlet 200, such as threading 107 or a pattern. A standardized fuel inlet may comprise the fuel inlet for a particular type of power tool 204, toolset, power tool manufacturer, type of engine (i.e, two-strokes and four-strokes), automobile, or automobile manufacturer. For example, the purging tool may have an interior structure similar to that of a standard fuel cap, wherein the inferior surface comprises a hallow cylinder with a threading on the exterior that is complimentary to the fuel inlet structure of a plethora of older vehicles. As another example, the interior structure 106 may comprise a pattern complimentary to the fuel inlet 200 structure of a two-stroke engine device, such as a chain saw 204. In such embodiments, the dimensions of the purging tool 100 and pneumatic valve 101 may also be proportional to those of a standardized fuel inlet 200. For example, for fuel inlets with a diameter of about 2.125 inches, the standard diameter of lawn mower fuel inlets, the purging tool 100 may have a diameter between about 2.22 inches to about 2.4 inches while the valve 101 may have a diameter of about 0.4 inches to about 0.8 inches.

[0035] In some embodiments, the pneumatic valve 101 may be operable to switch between a pumping mode and a standard operation mode. While the pneumatic valve 101 is in the pumping mode, the fuel system 203 has an airtight seal and may utilize a pumping device to purge blockages. While the pneumatic valve 101 is in standard operation mode, the valve behaves as a one-way release valve, relieving pressure once the pressure within the fuel tank, the fuel pressure, surpasses a pressure window. In standard operation mode, the fuel cap essentially behaves like a vented fuel cap, preventing the formation of a vacuum within the fuel tank as the fuel is utilized. This enables the purging tool to remain affixed to the fuel inlet 200 indefinitely, eliminating the need to swap the device's original fuel cap with the present invention every time there's a blockage.

[0036] In some embodiments, the purging tool 100 further comprises a pressure gauge to enable a user to easily monitor and adjust the fuel pressure of the fuel system until the pressure is within an operational pressure threshold. For example, if the fuel pressure of the fuel system of a device is at 4 PSI but has an operational window between 8-15 PSI, the user may simply attach the pump and monitor the pressure of the fuel tank as the pressure is increased via a pumping device.

[0037] As shown in FIG. 9, the exterior structure of the purging tool 100 may comprise grip 108 to enable a user to easily rotate or place the purging tool on the fuel inlet as required. The grip may be comprised of rough material such as nitrile, leather, silicone, Polyvinyl Chloride (PVC), and/or other material having a sufficient coefficient of friction to allow the user to grasp and achieve purchase on the surface and may further comprise a pattern that increases the amount of friction on the grip. For example, as shown in FIG. 1, the grip may be made of PVC and comprise a pattern of indents 109 that may accommodate at least one finger, enabling the user to firmly grip the purging tool.

[0038] As shown in FIG. 2 and FIG. 12, the present invention comprises a method for purging blockages 205 within a fuel system 203 and may include the steps of: exposing the fuel inlet by removing the original fuel cap of a fuel system, providing the purging tool 100, securing the purging tool 100 to the fuel inlet 200 such that it creates an air tight seal, attaching a pumping device 202 or compressor to the pumping interface, utilizing the pumping device to create an influx of air/pressure 110 within a fuel tank to purge blockages within the fuel system 203, removing the device and placing the original fuel cap of the fuel system back on the fuel inlet.

[0039] The method may alternatively comprise switching the device from a standard operation mode, wherein the purging tool 100 functions as a standard vented valve, switching the device to a pumping mode before attaching a pumping device, switching the device back to standard operation mode after the blockages have been purged, eliminating the need to place the original fuel cap back on the fuel system.

[0040] The present invention may also comprise a method of adjusting the fuel pressure for a fuel system 203 to enable proper operation and may include the following steps: exposing the fuel inlet by removing the original fuel cap of a fuel system, providing the purging tool with a pressure gauge as disclosed in the present invention, securing the purging tool to the fuel inlet such that it creates an air tight seal, attaching a pumping device or compressor to the pumping interface, monitoring the fuel pressure of the fuel system via the pressure gauge and adjusting it via the pumping device until the fuel pressure is within an operational window.

[0041] It should be understood that the foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, and to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated.