Active carbon filter for benzine fumes and harmful substances emited by motor vehicle tanks during fuel supplying

Abstract

 Active carbon filter for benzine fumes and harmful substances given out from vehicles tanks fuel supplying.
Filter composed by rubber bellows (4) to be inserted on the distribuiting pipe (3) of fuel gun pumps (1) at last to convoy the air saturated of benzine and other fumes coming from the tank (2) into an appropriated room (6) predisposed with active carbon filters (8) opportunely dosed for the filtering of harmful to give back the people a better sorrounding living ambient.

Description

[0001] The application takes place directly on the fuel gun distributing pipe for motor vehicles.
The invention is applied through a rubber bellows that convoys the harmful gasoline fumes into an exchangeable active carbon filter that holds them.
During fuel supplying,from the motor vehicle tank comes out an even quantity of very concentrated gases given to the pression velocity of charge ( half a liter each second ).
The volume of polluted air by gasoline and other harmful gases expandes polluting the surrounding ambient and it's breathen in a big percentage by whom uses the fuel supplying pump.
In this last years there have been verified professional diseases and an increasing number of lungtumors cases for the gas stations operators.
The actually tendence,to eliminate long hours turns,is the self service fuel supplying effectuated directly by the consumer.
The polluting cause is anyways remains not only the risk of diseases but is fractionated to all motorists.
At the present time in the United States the problem is resolved with the substitution of the system,is provide with a double pipe gun; one for the fuel and the other to retake the fumes that are convoited inside the tank and afterwards naturally in the ambient.
This system by the american technology,besides of the elevated costs takes a long time for the application.
There also exist in the status of technique excellent results by the active carbon filters wich have the characteristics of holding big quantities of flying substances and they are also used for the construction of harmful substances protection masks.
No application is been done for the filtering of automobiles gasoline fumes.
The present invention to be applied to the fuel gun,intends convoyng the satured air of gasoline from the automobile tanks throat to the exchangebles active carbon filters.In this maner is obtained a product at a low cost that resolvs a big ambiental pollution problem.
The advantages that a similar patented invention brings besides cleaning the air during fuel supplying and avoiding the substitution of the system are:

• the rapid application to all distributors with 80 % elimination of the present benzene.
• the low costs for the exercizing and installation.
• at last the definite capture of the polluting gas that will be removed and gotten rid of specials discharges.

[0002] The found can also be applied to all those occasiones in wich are transfered fuels,diluents and highly toxic flying substances,from a container to another.

[0003] The invention is described here followed by graphic example of application and precisely:

Figure 1 is a view in section of the invention applied to the fuel pump gun during supplying.

Figure 2 rappresents the view in a plan of the same application for a better identification of the form of the active carbon filter.

Figure 1 points out the graft of the filter on the distribuiting tube 3 and the utillzzation of the gun 1 in a supplying fase on the tanks throat.
The benzene gas coming from tank 2 for effect of the double function rubber bellows 4 wich plugs the throat 2,it canalizes in the space between the bellows 4 and the distributing pipe 3 it's forced to pass in between one or more slits 5 in the space of lodging 6 of active carbon filter 8.
Filter 8 it's been opportunely dosed in the density and thicknesses to hold the maximum quantity of benzine gas and other flying parts present in gasoline.
The carbon active filter is exchangeable every 10.000 liters of fuel and is grafted in the support 6 a pression with a click into special canal wich contains the screwplug 7 glued to the filter or independent,in material autoextinguishent and containing small holes for the passage of filtered air.

Claims

1. Active carbon filter to be inserted on the fuel distributor gun (1) and precisely on the distributing pipe(3) to convoy,between a rubber bellows (4) benzine gases into a special room (6) containing active carbon filters (8) appropriately dimensionated.

2. This filter of easy application to any distribuiting pipe (3) when it's saturated of benzine is rapidly substituted and the used catridge is sealed into small tin bags for the toxic waste procedure.

Drawing