DISPOSITION APPLIED IN A PORTABLE INTERMEDIATE IN-LINE DEVICE FOR DIRECT FUELING OF VEHICLE TANK

Description

1 / 5 DISPOSITION APPLIED IN A PORTABLE INTERMEDIATE IN-LINE DEVICE FOR DIRECT FUELING OF VEHICLE TANK INTRODUCTION

[001] This Utility Model refers to an arrangement applied to a portable device used during the refueling of motor vehicles, intended to be installed between the fuel nozzle and the neck of the vehicle's tank, allowing volumetric verification of the fuel transferred to the tank by means of an in-line intermediate assembly.

[002] The proposed arrangement is aimed at use in real-world refueling conditions, where hose traction, vibration and continuous handling occur, requiring stable nozzle retention, tightness at mountable interfaces and maintenance of automatic nozzle shut-off by vacuum when the tank reaches the cut-off level. STATE OF THE ART

[003] Portable meters and intermediate sets are known for monitoring the volume dispensed, including solutions that position a meter between the nozzle and the tank, with different reading arrangements and fluid flow.

[004] Document CN2634439Y entitled “OIL FILLING METER FOR MOTOR VEHICLE” describes a portable meter applied to refueling with a measuring and reading structure associated with fuel flow. However, it does not clearly and comprehensively present an inlet with positive retention of the nozzle by means of a vehicle neck-type ring, nor a radial sealing arrangement by a ring housed in a channel positioned after threading in mountable interfaces, nor a configuration aimed at preserving automatic vacuum shutoff.

[005] Document CN2825607Y entitled “PORTABLE FUEL FILLING MEASURER” describes a portable meter with an opening and elastic joint, associated with a structure designed to reduce splashing and allow for reading. However, it does not describe the assembly as an in-line intermediary directly between the nozzle and neck with positive nozzle retention, post-thread sealing on mountable interfaces, and vent passage / clearance to ensure automatic nozzle shutoff. Petition 870260034621, dated 04 / 14 / 2026, p. 5 / 21 2 / 5

[006] Document CN2464587Y entitled “PORTABLE FUEL ADDING MEASURER FOR CAR” describes a portable meter associated with a nozzle and tubing to allow reading of the volume dispensed. However, it does not describe, in a single compact intermediate assembly, (i) nozzle retention by a neck-type ring, (ii) sealing by a post-threaded channel ring to prevent leakage along the thread, and (iii) ventilation / clearance configuration at the inlet to preserve vacuum shutoff.

[007] In practice, in mountable intermediate assemblies, occurrences of nozzle detachment due to traction / vibration, leakage in threaded connections and interference in the automatic nozzle shut-off persist when the inlet seals or blocks the pneumatic communication necessary for the nozzle mechanism. OBJECTIVE OF THE UTILITY MODEL

[008] The applied arrangement aims to provide a portable in-line intermediate assembly, installable between the nozzle and neck, with stable nozzle retention, tightness in threaded mountable interfaces and preservation of automatic nozzle shut-off by vacuum during tank filling. SUMMARY OF THE UTILITY MODEL

[009] The applied arrangement comprises an inlet connection with a receiving neck provided internally with a vehicle neck type retaining ring; mountable interfaces made by threaded unions; sealing rings housed in annular channels positioned axially after the threads, for radial compression sealing and blocking leakage by the thread; and a ventilation and / or annular clearance configuration at the inlet, maintaining pneumatic communication in the nozzle region to preserve automatic vacuum shutoff.

[010] A metering module is arranged in-line in the internal fuel passage path, preferably a digital meter with indicator and zeroing control, without such preference limiting the arrangement applied to the indication and power supply methods. DESCRIPTION OF THE DRAWINGS Petition 870260034621, dated 04 / 14 / 2026, page 6 / 21 3 / 5

[011] The model will now be described in detail, and for better understanding, reference will be made to the attached drawings, in which the following figures are represented: Figure 1: Perspective view of the arrangement applied to an intermediate in-line portable device for direct refueling of a vehicle tank; Figure 2: Exploded perspective view of the arrangement applied in an intermediate in-line portable device for direct vehicle tank refueling, highlighting the threaded connections and sealing rings; Figure 3: Side view in section, with enlarged detail of the sealing ring housed in an annular channel, of the arrangement applied in an intermediate in-line portable device for direct refueling of a vehicle tank, illustrating the threaded interfaces, seals and retaining ring; Figure 4: Partial perspective view, in section, with enlarged detail of the retaining ring housed in a recess, of the arrangement applied in an intermediate in-line portable device for direct refueling of a vehicle tank, showing its use; Figure 5: Perspective view of the arrangement applied to an intermediate in-line portable device for direct vehicle tank refueling, showing its use. DETAILED MODEL DESCRIPTION

[012] The arrangement applied in an intermediate portable in-line device for direct vehicle tank filling, the subject of this utility model patent application, is temporarily installed between the nozzle outlet tube (4) and the neck, comprising a receiving neck with an internal retaining ring (5) for retaining the nozzle, threaded unions (8, 9) with sealing rings (10) housed in channels positioned after the threads to prevent leakage along the thread, and a ventilation passage (13) and / or annular clearance at the inlet to preserve the automatic nozzle shut-off by vacuum, keeping the metering module (2) in-line, preferably digital with indication and zeroing, and in the illustrated embodiment, the outlet connection (3) comprises a flexible section provided with a helical protection element (12). Petition 870260034621, dated 04 / 14 / 2026, page 7 / 21 4 / 5

[013] More specifically, the claimed solution relates to an ARRANGEMENT APPLIED IN AN INTERMEDIATE PORTABLE IN-LINE DEVICE FOR DIRECT FUELING OF A VEHICLE TANK, consisting of an inlet connection (1), a metering module (2) and an outlet connection (3), mounted in such a way as to define a single internal path for fuel, so that the indicated volume corresponds to the volume that passes through the assembly during refueling. The inlet connection (1) of the portable device (D) defines a receiving neck configured to receive the outlet tube (4) of the refueling nozzle, guiding it and maintaining the coupling during use.Inside the receiving neck, a retaining ring (5) is housed in a recess (6), configured to cooperate with the external geometry of the nozzle outlet tube (4) and mechanically retain the tube when inserted, reducing the possibility of detachment during handling, traction, and vibration. The said retaining ring (5) is preferably resilient and elastically deformable during tube (4) insertion, returning to its condition of mechanical cooperation with the external surface of the tube (4) for axial retention during use. The metering module (2) is arranged in-line in the internal path and is configured to record the total volume that passes through the assembly during refueling. In a preferred embodiment, the metering module (2) is digital, with an indicator (7) and a zeroing command for successive measurements. The outlet connection (3) conducts the fuel to the tank neck, and the flexible section may be provided with a helical protection element (12).The connections between the inlet connection (1), the measuring module (2), and the outlet connection (3) are made by threaded unions (8, 9), allowing assembly and disassembly of the assembly. In each mountable interface, at least one sealing ring (10) is provided, housed in an annular channel (11) defined in one of the parts, the annular channel (11) being positioned axially after the threaded region, so that, during threading, the sealing ring (10) is radially compressed between cooperating surfaces, sealing the interface and preventing leakage along the thread, the said sealing ring (10) being preferably elastomeric and radially compressed between cooperating cylindrical surfaces. The preservation of the automatic vacuum nozzle shut-off is achieved by configuring the inlet connection (1) to maintain pneumatic communication. Petition 870260034621, dated 04 / 14 / 2026, page 8 / 21 5 / 5 in the nozzle tube insertion region, avoiding undue hermetic sealing at the inlet.

[014] For this purpose, the receiving neck includes at least one ventilation passage (13) and / or controlled annular clearance that maintains the pneumatic communication necessary for the nozzle mechanism, allowing automatic disarming when the tank reaches the cut-off level, the ventilation passage (13) and / or annular clearance being arranged so as to maintain pneumatic communication with the external environment. The ventilation passage (13) can be implemented by an internal longitudinal channel, lateral opening or controlled annular clearance in a selected region of the receiving neck, alone or in combination.

[015] In use, the nozzle outlet tube (4) is inserted into the receiving neck until the retaining ring (5) retains the nozzle, the outlet connection (3) is positioned on the tank neck, the reading of the metering module (2) is zeroed when applicable, and refueling is carried out by passing the fuel through the internal path, maintaining the tightness of the interfaces and the automatic shut-off of the nozzle by vacuum when the tank cut-off level is reached. Petition 870260034621, dated 04 / 14 / 2026, page 9 / 21

Claims

1 / 1 CLAIM 1) ARRANGEMENT APPLIED IN PORTABLE INTERMEDIATE IN-LINE DEVICE FOR DIRECT SUPPLY OF VEHICLE TANK, of the type temporarily installable between the outlet tube (4) of the fuel nozzle and the tank neck and comprising a body with an internal single-passage fuel path and a metering module (2) arranged in-line, characterized by comprising an inlet connection (1) defining a receiving neck provided internally with a retaining ring (5) housed in a recess (6) for mechanical retention of the outlet tube (4) of the nozzle;the said retaining ring (5) being preferably resilient and configured to deform elastically during the insertion of the tube (4) and cooperate mechanically with the outer surface of said tube, promoting axial retention during use, interfaces between the inlet connection (1), the measuring module (2) and an outlet connection (3) made by threaded unions (8, 9), provided with at least one sealing ring (10) housed in an annular channel (11) positioned axially after the threaded region of each union for radial compression;the sealing ring (10) preferably elastomeric and radially compressed between cooperating cylindrical surfaces, so as to seal the interface and prevent leakage along the thread, and the inlet connection (1) configured with at least one ventilation passage (13) and / or annular clearance for maintaining the pneumatic communication of the nozzle, disposed in the region of insertion of the tube (4) and in communication with the external environment, so as to preserve the operation of the automatic vacuum shut-off system of the nozzle during refueling, the outlet connection (3) may comprise a rigid nozzle and / or flexible section, the flexible section may be provided with a helical protection element (12), and the ventilation passage (13) may consist of an internal longitudinal channel, lateral opening or controlled annular clearance, individually or in combination. Petition 870260034621, dated 04 / 14 / 2026, page 10 / 21

Images