Nozzle for delivery of auxiliary or additive fluid for treating exhaust for a diesel motor for autos or truck vehicle or the like

Abstract

An auxiliary or additive fluid for associated use with the primary diesel or related fuel, for application for reduction of exhaust pollution, and for motor or truck vehicle, or the like, includes the nozzle, the nozzle having its spout extending from its forward end, the spout having an outer sleeve, an inner sleeve through which the fluid flows during dispensing, a lower sleeve capable of shifting within the outer sleeve, and integrated with a safety valve sleeve, and biased axially inwardly of the spout when it is inserted into the fluid intake pipe of a vehicle intake for a fluid tank. A primary safety valve extends through the lower spout sleeve, and the integral safety valve sleeve is maintained in a fixed position, and normally is sealed into closure within the lower end of the lower spout sleeve. But, when the lower spout sleeve is forced axially inwardly, it unseats the safety valve from its sealing therewith, to open the spout for the dispensing of the fuel when the nozzle is actuated to allow fluid flow. In addition, a flow path for air that is normally closed by a check valve, is likewise opened, to allow for the passage of air to maintain the inoperativeness of the automatic shut-off, until such time as the fluid flow closes off the lower end said passage, initiating the automatic shut-off of the fluid dispensing nozzle, when the intake of air is blocked.

Claims

1. A fluid dispensing nozzle for dispensing an additive fluid to a fluid tank for treatment of exhaust for pollution reduction and for a diesel engine vehicle, said fluid dispensing nozzle having a spout construction at its forward end, such spout including an outer protective sleeve, a safety valve sleeve provided concentrically and axially arranged within the outer protective sleeve, said safety valve sleeve provided for the flow of the fluid therethrough, when the fluid dispensing nozzle is opened, a lower spout sleeve operatively and integrally associated and concentrically arranged with the safety valve sleeve, such that when the nozzle spout is inserted into a fill pipe of the vehicle, the lower spout sleeve is urged axially inwardly within the spout, due to its encountering an upper edge of the fill pipe of the vehicle, a safety valve extending through the safety valve sleeve and the lower spout sleeve, said safety valve having a valved end, the valved end provided for sealing against a valve seat proximate the outer end of said lower spout sleeve, to curtail the flow of any fluid through the fluid dispensing nozzle, when it is closed, but that said safety valve becomes unseated from the lower spout sleeve when the spout is inserted into the fill pipe of the vehicle, which urges the lower spout sleeve to be encountered and be urged inwardly of the spout within its safety valve sleeve, and a spring biased against the safety valve sleeve and biasing against an upper end of the lower spout sleeve and the forward end of the fluid dispensing nozzle to urge said lower spout sleeve into closure against the safety valve, when the fluid dispensing nozzle is shut off to curtail the flow of fluid into the vehicle.

2. The fluid dispensing nozzle for dispensing additive fluid to a diesel operative vehicle of claim 1, and including said safety valve extends entirely through the lower spout sleeve and the safety valve sleeve, and connects and seats proximate the forward end of the fluid dispensing nozzle.

3. The fluid dispensing nozzle for dispensing additive fluid to a diesel operative vehicle of claim 2, and including a passage extending entirely through the safety valve for the delivery of air to an automatic shutoff of the nozzle, and to initiate automatic shutoff as the dispensed fluid fills the fill pipe to a front end of the said safety valve and blocks the flow of air.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In referring to the drawings,

(2) FIG. 1 shows a side sectional view of the diesel exhaust fluid nozzle of this invention, with its spout safety valve in closure; and

(3) FIG. 2 is a side sectional view of the diesel exhaust fluid nozzle of this invention with its safety valve and vacuum check valve located within its spout in their opened conditions.

DESCRIPTION OF THE PREFERRED EMBODIMENT

(4) In referring to the drawings, and in particular FIG. 1, therein is shown a sectional view of the nozzle 1 of this invention. The nozzle has the usual characteristics including its back inlet 2 to which the fluid line hose connects, or to a swivel, and has a flow path 3, provided therethrough, and further incorporates its handle lever 4 and its lever guard 5, as can be noted. At the forward portion of the handle is the poppet valve 6, which, as well known, is the primary valve that allows for passage of fluid through the nozzle, when it is opened, or provides for its closure, for curtailment of fluid dispensing. The automatic shut-off mechanism is provided at 7, and cooperates with the vacuum generated by its venturi 8, for shut-off of the poppet valve through operations of the said automatic shut-off 7, when a filled capacity for the vehicle fluid tank is detected by the forward end of the nozzle spout 9, during its operations.

(5) The subject matter of the current invention is concerned with the structure, the details, and the operations of the spout 9, that allows for specific dispensing of select fluids or fuels, such as urea solution, through the nozzle, when the spout cooperates with the fill pipe of the vehicle, for such a solution, during refueling of the vehicle with this type of a select additive.

(6) As was previously explained, this type of a nozzle is to be used for dispensing diesel exhaust fluid, such a urea solution, into a separate vehicle fluid tank, of the diesel motor vehicle.

(7) The specific construction of the spout 9, for the hose nozzle valve of this invention, for dispensing the solution into the identified tank of a motor vehicle, does include its main valve 6, generally identified as the poppet valve. The spout is provided according to this invention with a safety valve 10, at the forward end of the spout, that is arranged downstream from the main valve 6, and such safety valve can be moved from a closed position (as shown in FIG. 1), to an opened position (as shown in FIG. 2) by means of an opening movement directed to the structure surrounding the safety valve 10, so that the valve remains downstream, while the other components, to be identified, are shifted upwardly, within the nozzle spout, as it is inserted into the fill pipe of the auxiliary tank for the vehicle being serviced.

(8) Generally, the spout includes an outer sleeve 11, that is affixed to the front of the nozzle, or a spout adaptor, as at 12. Provided within the sleeve 11 is a safety valve sleeve 13, and it is also fixed, by threaded connection, to the front of the nozzle 12, or its adaptor. Provided upon the valve sleeve 13 is a sleeve spring 14, and this spring is maintained on the valve sleeve 13, biases also against the front end of the nozzle, as at its connecting nut or adaptor 15, and at its front end, biases against the upper and inward end 16 of the lower spout portion 17 as noted. Provided upon the surface of lower spout 17 is a shiftable spacer or seal 18 and which includes a primary or outer magnet 19 as can be noted. The spacer 18, and its magnet 19, are secured about the lower spout 17, and can slide longitudally or axially for a short distance with the lower spout 17, as can be noted.

(9) Thus, when the nozzle lower spout 17 is inserted within the fluid fill pipe 20 of the vehicle, the upper edge 21 of the fuel pipe biases against the seal 18, and forces it and its magnet 19 axially upwardly within the spout sleeve 11, against the bias of the sleeve spring 14, and when such occurs, the safety valve 10 remains stationary, but the lower spout sleeve 17 is urged axially inwardly, and thereby disengaging the safety valve 10 from its seat 22 within the lower spout sleeve 17, to open that particular valve, generally as can be noted at 23, in FIG. 2. When such occurs, the specialty fluid, when the nozzle is opened, by manipulation and elevation of its nozzle handle 4, will allow the specialty fluid to flow through the nozzle spout, after the poppet valve 6 for the nozzle has been opened. Thus, the nozzle will only allow the dispensing of the specialty fluid when the nozzle spout 17 is capable of being inserted within a particularly sized fill pipe 20, which must cooperate with the nozzle spout, to urge the spout sleeve 17 axially upwardly within the spout 11, in preparation for the dispensing of the diesel exhaust fluid of the dispensing system.

(10) At the same time, when the lower spout sleeve 17 is in its closed position, with respect to the safety valve 10, the check valve ball 23a is seated against a valve seat 24 of the air return line 25 of the spout. When the lower spout sleeve 17 is urged rearwardly, a further magnet 26 which is pressed against the check valve 23 will be moved inwardly under the influence of the magnetic attraction from the primary magnet 19, as that magnet 19 and its spacer 18 are urged upwardly within the outer sleeve 11, and pull the magnet 26, and its check valve ball 23a, also upwardly, so as to open the air line 25 provided axially through the safety valve sleeve 13, as can be noted. Thus, when the specialty fluid is being dispensed, through opening of the nozzle, and the safety valve 10, the air return line 25 will likewise be placed into an open condition, allows for return of air back through the nozzle, and to shut-off 7, for usage, as known in the art.

(11) Thus, as previously reviewed and explained, all of the various operative components of this invention are centrally applied, within the outer sleeve cover 11, and thereat are rendered operative simply by inserting the spout of the nozzle into the fill pipe 20, as noted, so that the upper edge of the fill pipe 21 biases against the seal 18, and forces it further inwardly within the outer sleeve 11, to prepare the nozzle for dispensing, and at the same time, to allow for staging the automatic shutoff, as explained. The opened condition for the nozzle, has already been explained and shown in FIG. 2, where the safety valve 10 is displaced from its valve seat 22, and at the same time, the check valve ball 23 is lifted from its seat 24 to also allow for the passage of air.

(12) As could be understood, this particular specialty nozzle, in this particular instance for dispensing diesel exhaust fluid into a separate fluid tank of the vehicle, is provided with structure that is completely axially aligned within the spout sleeve, so that there are no lateral forces acting upon these various components, that could lead their early deterioration, and malfunctioning. All the operator needs to do is simply insert the spout of the nozzle into the particularly sized fill pipe of the vehicle, push it slightly further inwardly, and this stages the spout portion of the nozzle in preparation for dispensing of the specialty fluid, when the handle of the nozzle is manipulated into an opened condition, or opening of its main poppet valve 6, as explained.

(13) Variations or modifications to the subject matter of this invention may occur to those skilled in the art upon review of the development as provided herein. Such variations, if within the spirit of this invention, are intended to be encompassed within the scope of any claims to patent protection issuing herein. The summary of the invention, its explanation in the specification, and its depiction of the drawings, are primarily set forth for illustrative purposes only.