EP0072746B1 - Handspritzlanze zum Zerstäuben von Pflanzenbehandlungsflüssigkeiten - Google Patents

Handspritzlanze zum Zerstäuben von Pflanzenbehandlungsflüssigkeiten Download PDF

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Publication number
EP0072746B1
EP0072746B1 EP82401507A EP82401507A EP0072746B1 EP 0072746 B1 EP0072746 B1 EP 0072746B1 EP 82401507 A EP82401507 A EP 82401507A EP 82401507 A EP82401507 A EP 82401507A EP 0072746 B1 EP0072746 B1 EP 0072746B1
Authority
EP
European Patent Office
Prior art keywords
filter
hand
trigger
handle
spray gun
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82401507A
Other languages
English (en)
French (fr)
Other versions
EP0072746A2 (de
EP0072746A3 (en
Inventor
Patrick Jean-Marie Ballu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tecnoma SA
Original Assignee
Tecnoma SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tecnoma SA filed Critical Tecnoma SA
Publication of EP0072746A2 publication Critical patent/EP0072746A2/de
Publication of EP0072746A3 publication Critical patent/EP0072746A3/fr
Application granted granted Critical
Publication of EP0072746B1 publication Critical patent/EP0072746B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • B05B12/0024—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices

Definitions

  • the present invention relates to a hand lance for spraying a plant treatment liquid.
  • hand lances are already known, each comprising, at the end of a flexible liquid supply pipe, a rigid handle, which is provided with an inlet valve and a trigger for control of this valve, and which is extended by rigid tube, carrying at its end a spray head.
  • a filter should generally be provided upstream of the spray head of such hand lances; experience has shown that this filter clogs fairly quickly; however, in hand lances of this type, which have been carried out so far, cleaning the filter is a long and difficult operation, since it requires the disassembly of several elements; this is the case in particular when the filter is disposed, in a known manner, at the connection between the reservoir of pressurized liquid on the one hand, and the corresponding end of the flexible hose supplying the lance, on the other hand go.
  • Document US-A-3 515 355 describes a hand lance provided with a tubular filter which is housed in the front part of the tubular handle of the lance, and is held there by a cap nut which also serves to maintain the projection nozzle, these two parts being clamped one on the other with the interposition of a safety ring.
  • the intake valve is placed in the handle upstream of the filter, so that the latter does not protect the valve against dirt deposits.
  • the cleaning of the valve moreover, requires the complete dismantling of the handle, and it is undoubtedly for this reason that it was necessary to place another filter located near the connection of entry of the liquid in the handle, which resulted in a complicated structure.
  • the object of the present invention is to provide a device of the type indicated above, in which the cleaning of the valve is not more difficult than that of the filter, and which is of simpler structure.
  • the invention therefore provides a hand lance for spraying a liquid, in particular a plant treatment liquid, comprising, at the end of a flexible liquid supply pipe, a rigid handle, which is provided with an inlet valve and a trigger for controlling this valve, and in the extension of which is mounted a spray head, said hand lance being further provided with a prismatic or cylindrical filter of which one base is open and the other is closed by an overhanging part, this filter being immobilized in the front part of the tubular handle located on the side of the spray head by a cap nut screwed onto said front part and serving to maintain the spray head (known from document US-A-3 515 355) characterized in that the projecting part which closes one of the bases of the filter is crossed in leaktight manner by the movable body of the intake valve, while the cap nut which immobilizes the filter compor a tubing, one end of which penetrates through the open base of the filter and carries the seat of the intake valve, the other end of this tubing serving for connection with the spray head,
  • the various parts housed in the tubular handle are dimensioned so that the cylindrical or prismatic filter is normally engaged over only a fraction of its length in the front part of said handle.
  • This arrangement further facilitates the extraction of the filter from the tubular handle, by the manipulations previously indicated, but, moreover, it allows access to the filter after the cap nut has been removed only, since said filter then protrudes, over a greater or lesser fraction of its length, beyond the open end of the front part of the tubular handle; in this position of the filter, still partially engaged in the tubular handle, it is indeed possible to carry out rapid cleaning of said filter, which may be sufficient in particular when it is not very dirty.
  • control trigger articulated on the part of the movable body of the intake valve, which is external to the filter, can project out of the tubular handle through a longitudinal slot, having a sufficient length to allow said trigger to be optionally engaged over its entire length inside the handle.
  • This arrangement makes it possible to prevent the trigger, articulated on the movable body of the intake valve, from obstructing the movement towards the outside of the assembly formed by the filter, its base, the movable body of the intake valve, the trigger, the flexible supply pipe and the rigid end piece which extends it, and does not even prevent the at least partial exit of this assembly, outside the tubular handle.
  • the control trigger may have, before it is articulated on the body of the valve, an extension cooperating with a fixed ramp arranged so that, when traction is applied manually to said trigger, said ramp guides its extension so that its articulation exerts on said valve body an overdrive traction which is sufficient to overcome the force of an automatic reclosing spring of said valve, and to produce the opening of the latter.
  • the ramp comprises a latching element, ensuring the temporary blocking of the trigger in a position corresponding to the opening of said valve.
  • the trigger for controlling the hand lance according to the present invention therefore allows, in addition to temporary openings, of controlled durations, of the intake valve, its permanent opening, obtained by bringing the trigger in a determined position.
  • FIGs 1 and 2 1 denotes a tubular handle, for example of molded plastic, which is open at both ends; on the front end of the handle 1, that is to say its end located to the left of Figure 1, on the side of the spray head - not shown in this figure - of the hand lance, is arranged a thread 1a, onto which a cap nut 2 can be screwed, for example a standard nut under the designation "34 gas".
  • This cap nut 2 is provided, in its central part, with a tube, one end of which, 2a, forms a projection in the direction of the spray head; in this tubing element 2a is engaged the corresponding end of a rigid tube 3, for example aluminum, on the other end of which is mounted the spray head, which will be described later.
  • a cap nut 4 is threaded onto the corresponding end of the rigid tube 3 and screwed onto a thread 2e, provided externally on the tubing element 2a, so as to immobilize said end of the rigid tube 3 inside said tubing 2a.
  • a filter 5 is immobilized, with a prismatic or cylindrical surface, including a base, disposed on the side of the cap nut 2, is open, while its other base, located inside the front part of the tubular handle 1, is closed by a piece 5a, of metal or plastic, which is sealed through by the movable body, in the form of a piston, 6a, of an intake valve.
  • the whole of the filtering wall and the base 5a of the filter 5 can be constituted for example by a single piece of molded plastic.
  • the base 5a of the filter protrudes on either side of its lateral filtering surface, in the form of a kind of annular flange 5b.
  • the cap nut 2 is provided on the one hand with an internal skirt-shaped element, 2c, which tightens the annular flange 5b of the base 5a of the filter 5 against an appropriate internal shoulder.
  • a single annular seal 8 provides sealing, with respect to the outside, of the annular chamber 7 previously defined.
  • the handle tubular 1 inside said tubular handle 1, the end of the flexible pipe 9 is mounted, so as to ensure sealing, on a rigid end piece 10, which is itself integral with the base 5a of the filter 5, in particular at level of its projecting part 5b; as seen in Figure 1, the inner channel of the nozzle 10 opens through an orifice 10a in the annular chamber 7 previously defined, that is to say in the interval between the skirt-shaped element 2c , of the cap nut 2, on the one hand, and the filtering side wall of the filter 5, on the other hand.
  • the cap nut 2 also comprises, in the extension of its external tubing element 2a, previously mentioned, an internal tubing element, 2b, the end of which penetrates through the open base of the filter 5 and carries the seat 6b of the valve. of admission.
  • the latter is kept normally closed, for example by an automatic reclosing spring, 11, which is engaged around the movable body 6a, in the form of a piston, and which bears, by one end, on the inner face of the base 5a of the filter. 5, and, by its other end, on a bearing arranged at the rear of the part of the movable body 6a intended to cooperate with the seat 6b.
  • the tubular handle 1 is further provided with a trigger for controlling the intake valve; this trigger 12 is articulated at 13 on the part of the movable body, 6a, of the intake valve, which is external to the filter 5; it can protrude out of the tubular handle 1 through a longitudinal slot, 1 c, having a length sufficient to allow said trigger 12 to be optionally engaged over its entire length inside the tubular handle 1, as indicated in solid lines in FIG. 2, where this fully retracted position of the trigger is designated by 12C.
  • the trigger, 12 has, in front of its articula tion 13 on the valve body, 6a, an extension 12a ( Figures 2 to 4), which cooperates with a ramp 14, integral with the projecting base, 5a, of the filter 5.
  • an extension 12a Figures 2 to 4
  • the trigger then in its almost vertical position, 12, corresponding to the closure automatic of the inlet valve by the spring 11, said trigger pivots about its articulation 13 in the direction of the arrow f (FIG.
  • the hand lance according to the present invention equipped with the handle described above, operates as follows:
  • the opening of the intake valve authorizes the passage of the treatment liquid in the tubing 2b of the cap nut 2, then into the rigid tube 3, with a flow rate which depends on the spacing between the movable body 6a of the intake valve and its seat 6b, therefore on the pivoting of the trigger from its closed position 12.
  • the spring 11 closes the inlet valve, which interrupts the spraying of treatment liquid, and, at the same time, the force resulting from the relaxation of the spring 11 is transmitted by the articulation 13 to the trigger of comm ande, so as to return it to its closed position 12.
  • the trigger is brought to its extreme position 12B, it is locked in this latter position by the cooperation of its extension 12a with the latching element, 14a, of the ramp 14 (FIG. 4), so that said trigger opposes the force exerted by the automatic reclosing spring 11; the inlet valve therefore remains in its open position, corresponding to the position 12B of the trigger, until the user exerts on the latter a thrust in the opposite direction to the arrow.f, said trigger being then returned to its closed position 12 by the action of the spring 11 as soon as the extension 12a of said trigger has ceased to cooperate with the latching element 14a.
  • the filter requires further cleaning, it is easy to remove it completely from the tubular handle 1 by pushing the flexible supply hose 9 to the left of FIGS. 1 and 2; this last figure shows in particular the filter 5 completely removed from the tubular handle 1; this filter outlet was made possible by the fact that the tubular handle 1 is provided internally with at least one projection 15 (FIG. 2), in particular in the form of a ramp, which is arranged so as to cooperate with at least one projection the trigger 12, in particular in the shape of a pin 16, so that, when the filter 5 is pushed into the front part of the tubular handle 1, towards the front, that is to say towards the left of FIG.
  • at least one projection 15 FIG. 2
  • the tubular handle 1 is provided internally with at least one projection 15 (FIG. 2), in particular in the form of a ramp, which is arranged so as to cooperate with at least one projection the trigger 12, in particular in the shape of a pin 16, so that, when the filter 5 is pushed into the front part of the tubular handle 1, towards the front, that is to say towards the
  • the trigger 12 pivots so as to completely enter the tubular handle 1, through the longitudinal slot 1c; Having reached its position 12C, the trigger obviously no longer opposes the extraction of the filter 5 from the handle 1.
  • the filter 5, completely removed from the handle 1 can then be thoroughly cleaned, by one of the previously indicated methods, and / or by brushing, then be re-engaged inside the tubular handle 1 by exerting on the flexible supply pipe, 9, a pull to the right of FIG. 2; during the movement of the assembly 5-5a-16a-9-10-12 to the right, the cooperation between the stud 16 of the control trigger and the ramp 15, causes the pivoting of said trigger from its position 12C up to 'at its position 12B. It then suffices to screw the cap nut 2 back onto the thread 1a of the tubular handle 1, then to manually return the trigger from its temporary blocking position 12B to its closed position 12.
  • the fraction, 1, of the length, L, of the filter which, according to FIG. 1, is engaged in the front part of the tubular handle 1, is optional material; the ratio 1 / L can in particular have any value, ranging between a minimum value, just sufficient to allow the overflowing base, 5a, of the filter 5 to be engaged in the tubular handle, and a maximum value, practically equal to 1.
  • the internal element 2c of the cap nut 2 (FIG. 1), instead of being in the form of a skirt, could consist of one or more internal projections, of substantially axial direction, and of appropriate length. Instead of being provided, beyond its articulation 13 on the body 6a of the valve, with an extension 12a cooperating with a fixed ramp 14, the control trigger 12 (FIGS.

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  • Nozzles (AREA)
  • Catching Or Destruction (AREA)

Claims (9)

1. Handspritzlanze zum Zerstäuben einer Flüssigkeit, insbesondere einer Pflanzenbehandlungsflüssigkeit, die am Ende eines biegsamen Flüssigkeitszuführungsrohres einen starren Handgriff aufweist, der mit einem Einlaßventil und mit einem Betätigungsteil für dieses Ventil versehen ist und in dessen Verlängerung ein Zerstäubungskopf angeordnet ist, wobei die Handspritzlanze ferner mit einem prismatischen oder zylindrischen Filter (5) versehen ist, dessen eine Grundseite offen und dessen andere Grundseite von einem Endkörper (5a) verschlossen ist, wobei dieses Filter in dem angrenzend am Zerstäubungskopf angeordneten vorderen Abschnitt des rohrförmigen Handgriffs (1) durch eine Überwurfmutter (2) festgelegt ist, die auf diesen vorderen Abschnitt aufgeschraubt ist und zur Halterung des Zerstäubungskopfes dient, dadurch gekennzeichnet, daß der Endkörper (5a), der eine der Grundseiten des Filters (5) verschließt, abgedichtet von dem beweglichen Teil des Einlaßventils durchdrungen ist, während die Überwurfmutter (2), die das Filter (5) festlegt, einen Rohrkörper aufweist, dessen eines Ende (2b) durch die offene Grundseite des Filters (5) verläuft und den Sitz (6b) des Einlaßventils trägt, während das andere Ende (2a) dieses Rohrkörpers zum Anschluß an dem Zerstäubungskopf dient, und daß ein starres Anschlußteil (10), das das biegsame Einlaßrohr (9) im Inneren des rohrförmigen Handgriffes (1) verlängert, mit dem Endkörper (5a) des Filters (5) fest verbunden ist, derart, daß es in eine Ringkammer (7) mündet, die einerseits zwischen der Wand des Filters (5) und andererseits den Innenwänden des rohrförmigen Handgriffes (1) und gegebenenfalls der Überwurfmutter (2) gebildet ist.
2. Handspritzlanze nach Anspruch 1, dadurch gekennzeichnet, daß die verschiedenen im rohrförmigen Handgriff (1) untergebrachten Teile so dimensioniert sind, daß das prismatische bzw. zylindrische Filter normalerweise nur über einen Bruchteil (1) seiner Länge (L) im vorderen Abschnitt des Handgriffes (1) sitzt.
3. Handspritzlanze nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Endkörper (5b) des Filters (5) gegen einen inneren ringförmigen Anschlag (1 b) des rohrförmigen Handgriffs (1) durch mindestens ein Innenteil (2c) der Überwurfmutter (2) angedrückt wird, wobei dieses Innenteil (2c) beispielsweise die Form einer Schürze hat.
4. Handspritzlanze nach Anspruch 3, dadurch gekennzeichnet, daß dem Endkörper (5b) des Filters (5) eine einzige Dichtung (8) zugeordnet ist.
5. Handspritzlanze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Betätigungsteil (12), das auf dem außerhalb des Filters (5) liegenden Abschnitt des beweglichen Teils (6a) des Einlaßventils gelenkig gelagert ist, aus dem rohrförmigen Handgriff (1) durch einen Längsschlitz (1 c) vorstehen kann, welcher lang genug ist, damit das Betätigungsteil (12c) gegebenenfalls über seiner gesamten Länge im Inneren des Handgriffs (1) untergebracht werden kann.
6. Handspritzlanze nach Anspruch 5, dadurch gekennzeichnet, daß der rohrförmige Handgriff (1) innen mit mindestens einem Vorsprung (15), beispielsweise in Form einer Rampe versehen ist, welcher so angeordnet ist, daß er mit mindestens einem Vorsprung (16) des Betätigungsteils (12), beispielsweise in Form einer Abrundung so zusammenwirkt, daß das Betätigungsteil (12), wenn das Filter (5) in den vorderen Abschnitt des Handgriffes (1) in Vorwärtsrichtung oder auch in Rückwärtsrichtung bezüglich desselben gestoßen wird, so verschwenkt, daß es vollständig in den rohrförmigen Handgriff (1) eingezogen wird oder teilweise durch den entsprechenden Schlitz (1c) vorsteht.
7. Handspritzlanze nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Betätigungsteil (12), das mit dem Körper (6a) des Ventils durch ein Gelenk (13) verbunden ist, vor diesem Gelenk eine Verlängerung (12a) aufweist, die mit einer ortsfesten Rampe (14) zusammenwirkt, die so ausgebildet ist, daß die Rampe (14), wenn auf das Betätigungsteil (12) manuell eine Zugkraft ausgeübt wird, dessen Verlängerung (12a) so führt, daß sein Gelenk (13) auf den Ventilkörper (6a) eine verstärkte Kraft ausübt, die ausreicht, um die Kraft einer Feder (11) zum selbsttätigen Schließen des Ventils zu überwinden und dasselbe zu öffnen.
8. Handspritzlanze nach Anspruch 7, dadurch gekennzeichnet, daß die Rampe (14) ein Sperrteil (14a) aufweist, das die zeitweise Sperrung des Betätigungsteils in einer Stellung (12B) entsprechend der Öffnungsstellung des Ventils (6a-6b) sicherstellt.
9. Handspritzlanze nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die ortsfeste Rampe (14) von dem Endkörper (5a) des Filters getragen wird.
EP82401507A 1981-08-13 1982-08-09 Handspritzlanze zum Zerstäuben von Pflanzenbehandlungsflüssigkeiten Expired EP0072746B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115674 1981-08-13
FR8115674A FR2511269A1 (fr) 1981-08-13 1981-08-13 Lance a main pour la pulverisation d'un liquide de traitement des plantes

Publications (3)

Publication Number Publication Date
EP0072746A2 EP0072746A2 (de) 1983-02-23
EP0072746A3 EP0072746A3 (en) 1984-07-18
EP0072746B1 true EP0072746B1 (de) 1987-07-29

Family

ID=9261450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401507A Expired EP0072746B1 (de) 1981-08-13 1982-08-09 Handspritzlanze zum Zerstäuben von Pflanzenbehandlungsflüssigkeiten

Country Status (6)

Country Link
US (1) US4518122A (de)
EP (1) EP0072746B1 (de)
BR (1) BR8204712A (de)
DE (1) DE3276855D1 (de)
FR (1) FR2511269A1 (de)
NZ (1) NZ201540A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2476042A1 (en) * 2004-07-29 2006-01-29 Douglas Burnworth Multi-pattern spray nozzle assembly with movable water conduit
US7677476B2 (en) * 2005-05-02 2010-03-16 Campbell Hausfeld/Scott Fetzer Company Extension pole apparatus
TWM291840U (en) * 2006-01-05 2006-06-11 Wang Jin Yuan Rotary/ swing type water gun structure
US7789327B2 (en) * 2007-05-31 2010-09-07 Illinois Tool Works Inc. Modular spray gun with replaceable components
US8313047B2 (en) * 2007-12-10 2012-11-20 Micheli Paul R Spray gun having adjustable handle
EP3476421B1 (de) * 2017-10-24 2021-04-07 Thomas Kemper Applikator mit vereinfachter reinigung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE95802C (de) *
FR429659A (fr) * 1910-05-14 1911-09-28 Robinson Bros Ltd Lance d'arrosage pour jardins
US2705663A (en) * 1952-08-08 1955-04-05 Robert I Gilbreath Spray gun
US3224793A (en) * 1961-07-13 1965-12-21 Wrightway Engineering Co Swivel mounting for aerating device or the like
US3419246A (en) * 1967-04-03 1968-12-31 Lif O Gen Inc Toggle valve
US3515355A (en) * 1968-04-12 1970-06-02 Josef Wagner Airless spray gun
BE790705A (fr) * 1971-10-29 1973-02-15 Walker Crosweller & Cy Ltd Installations destinees a la toilette
BE795888A (fr) * 1972-03-29 1973-06-18 Grohe Kg Hans Pomme de douche
FR2206683A5 (de) * 1972-11-15 1974-06-07 Paule Charles
DE2558796C3 (de) * 1975-12-24 1979-09-20 Schlaefer Gmbh & Co, 7263 Bad Liebenzell Handbrause mit Mehrfachfunktionsbrausekopf
US4247048A (en) * 1979-03-29 1981-01-27 Ethyl Corporation Dispensing nozzle

Also Published As

Publication number Publication date
FR2511269A1 (fr) 1983-02-18
EP0072746A2 (de) 1983-02-23
BR8204712A (pt) 1983-08-02
NZ201540A (en) 1986-03-14
EP0072746A3 (en) 1984-07-18
FR2511269B1 (de) 1983-12-09
US4518122A (en) 1985-05-21
DE3276855D1 (en) 1987-09-03

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