WO1987003680A1

WO1987003680A1 - Improvements made in gasoline marker

Info

Publication number: WO1987003680A1
Application number: PCT/BR1986/000023
Authority: WO
Inventors: Gaspar Dos Santos Torres; Joaquim Da Silva Elias
Original assignee: Gaspar Dos Santos Torres; Joaquim Da Silva Elias
Priority date: 1985-12-03
Filing date: 1986-12-02
Publication date: 1987-06-18
Also published as: EP0248850A1; BR8506220A

Abstract

A gasoline marker of the type which comprises a plurality of contactor devices (10) on the inside of a fuel tank and electrically connected to light-emitting sources on the vehicle's dashboard, composed basically of a hermetically sealed box (20) incorporating in one of its side walls (21) a grounded copper plate (22) and at a certain distance from same a sheet (23) supporting a plurality of contactor devices (25) electrically connected to a digital system input (Fe), these contactor devices (25) being propelled against the copper plate (22) by means of an elastic medium (26) and a magnet (32) incorporated on a level float (31) on the inside of a tube (30) positioned parallel to the box (20).

Description

"IMPROVEMENTS MADE IN GASOLINE MARKER"

This report refers to improvements made in a gasoline marker of the type described and claimed in patent application no, PI 8502958, of 20 June 1985, deposited by the game applicant.

Patent Application PI 8502958 refers basically to a gasoline marker comprising a plurality of contactor devices on the inside of a fuel tank, each positioned on a corresponding pair of positive arid negative electric wires, connected to corresponding light-emitting sources on the vehicle's dashboard, each light-emitting source being positioned under a corresponding number, and the respective light source is energized whenever the devices make contact with the corresponding electric wires, whereupon the fuel level inside the tank is shown.

The improvements in question consist basically of a system for detecting the fuel level, allied to a digital system, which respectively replace the contactor devices and the numerical display panel which shows the fuel level.

This invention's purpose is to provide a means for detecting the fuel level which is basically composed of a floating element incorporating a method whereby it undergoes a process of attraction created by a plurality of devices electrically connected to said digital system, these devices being positioned at certain levels of the fuel tank without being immersed therein.

In order to afford a better understanding of the improvements hereby claimed, they will now be described in relation to the attached diagrams, in which:

Figure 1 is a schematic view in longitudinal section of a fuel tank incorporating the improvements in this invention;

Figure 2 illustrates the digital system circuit allied to the level detection system shown in figure 1; and

Figure 3 is a schematic view of the gasoline marking system described in the previous application.

In accordance with the illustrations listed above, the improvements in question are basically made in a gasoline marking system of the type which comprises a plurality of contactor devices.10 incorporating underneath them a contacting plate 10a, inside the vehicle's fuel tank "T", each positioned on a corresponding pair of positive and negative electric wires respectively 11 and 12, connected to light-emitting sources positioned under a corresponding-display panel on the vehicle's dashboard.

The improvements in question consist basically of the positioning on the inside of the vehicle's fuel tank "T" a hermetically sealed box 20 incorporating on one of its side walls 21 a grounded copper plate 22 and at a certain distance from same a sheet 23 provided with a plurality of perforations lined with metal rims 24, and inside each perforation a steel bolt 25 slides horizontally, one of the ends of which is subjected toa retaining spring 26. Each metal rim is electrically connected to the input "Fe" of a decimal decoder (figure 2) while the copper plate 22 is connected to the input "Cu" of said decoder.

A tube 30 is fixed to the bottom of a fuel tank "T", positioned parallel to the box 20 referred to, this tube 30 incorporating in its inside a float 31 which supports a magnet 32 above it. This float 31 is positioned under the level of the fuel, as illustrated in the attached diagram.

The fuel's fluctuating movement causes the float

31 to become aligned to a corresponding steel bolt 25 inside the box 20. When this happens, the magnet

32 attracts the steel bolt 25 to the copper plate 22, positioned on the side of the box 20.

This impact grounds the encoder's logic input by closing the contact, in view of the magnetic effect, and the steel bolt 25 is then electricllly connected to the decoder's input, since it is in contact with the metal rim 24.

The digital system is basically constituted by a seven-segment decoder circuit and a decimal decoder whose functioning principle is based, on the fact that, when an input is grounded by magnetism, it passes to the "low" level as each door's output is operated as an inverter in the seven-segment decoder's input. Upon reaching the system, the decade activates the "ENABLE", which in turn activates the sample at decade level, since the system is expandible.

Hence, the improvements inquestion envisage essentially the provision of a gasolin marker by a digital system mechanically driven by a fuel level detection system on the inside of the vehicle's tank "T".

Claims

C L A I M S

1. "IMPROVEMENTS IN A GASOLINE MARKER", of the type which comprises a plurality of contactor devices (10) on the inside of a fuel tank, electrically connected to light-emitting sources on the vehicle's dashboard, characterized by the fact that they consist basically of a hermetically-sealed box (2) incorporating in one of its side walls (21) a grounded copper plate (22) and at a certain distance from same a sheet (23) supporting a plurality of contactor devices (25) electrically connected to the input (Fe) of a digital system, these contactor devices (25) being propelled against a copper plate (220 by means of an elastic medium (26) and a magnet (32) incorporated on a level float (31) on the inside parallel to the box (20).

2. "IMPROVEMENTS IN A GASOLINE MAKER", in accordance with claim 1, characterized by the fact that the contactor devices (25) are composed of steel bolts placed across the inside of perforatings lined with metal rims (24) provided in the sheet referred to (23), each metal rim (24) being electrically connected to the digital system's input (Fe).

3. "IMPROVEMENTS IN A GASOLINE MARKER", in accordance with claim 2, characterized by the fact that the elastic medium (26) consists of a spring incorporated at one end of the steel bolt (25).

4. "IMPROVEMENTS IN A GASOLINE MARKER, in accordance with claim 3, characterized by the fact that the digital system is constituted basically by a seven-segment decoder circuit and a decimal decoder.