EP1675685A2 - Pistolets d'arrosage - Google Patents

Pistolets d'arrosage

Info

Publication number
EP1675685A2
EP1675685A2 EP04768171A EP04768171A EP1675685A2 EP 1675685 A2 EP1675685 A2 EP 1675685A2 EP 04768171 A EP04768171 A EP 04768171A EP 04768171 A EP04768171 A EP 04768171A EP 1675685 A2 EP1675685 A2 EP 1675685A2
Authority
EP
European Patent Office
Prior art keywords
stem
trigger
gun according
hose
valve
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.)
Granted
Application number
EP04768171A
Other languages
German (de)
English (en)
Other versions
EP1675685B1 (fr
Inventor
Nicolino Laciofano
Robert Dudley Boughton
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.)
Hozelock Ltd
Original Assignee
Hozelock Ltd
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 Hozelock Ltd filed Critical Hozelock Ltd
Publication of EP1675685A2 publication Critical patent/EP1675685A2/fr
Application granted granted Critical
Publication of EP1675685B1 publication Critical patent/EP1675685B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve
    • 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

  • This invention relates to hose guns.
  • Hose guns are often used to control the flow of water at the end of a garden hosepipe when, for example, watering plants.
  • hose guns include a multi function head in which different modes of operation, for example, different spray patterns can be selected by appropriately adjusting a control provided on the head. It is an aim of at least some of the embodiments of the present invention to provide a convenient means for selecting different functions in a multi function hose gun.
  • US-A-3709259 discloses a two-stage valve arrangement that is operable by an operator to cause fluid to flow therethrough.
  • the valve arrangement of US-A-3709259 is not directed towards providing a finitely adjustable flow rate and is instead directed towards providing a valve assembly that "snaps" open with a minimal operating force.
  • this known valve arrangement uses the pressure of fluid supplied thereto to close the valve arrangement. If the supply pressure is low or cut off, the valve assembly may therefore not close properly and the arrangement may leak.
  • GB-A-2909 discloses a self-closing tap.
  • the tap includes a two-stage valve that includes a radially inner and a radially outer part, the two parts combining to close an orifice of the tap.
  • a user-operable button is connected to the inner part and can be pressed to open that inner part, thereby partly uncovering the orifice and allowing flow therethrough. Continued depression of the button results in the outer part being engaged and the orifice being further uncovered. Again, the pressure of the fluid supplied to the valve arrangement of GB-A- 2909 is used to close the inner part when the button is released. This arrangement therefore also suffers from a tendency to drip.
  • a hose gun as defined in claim 1 of the appended claims.
  • a hose gun according to this aspect minimizes the problem of dripping or leaking when the pressure of fluid supplied thereto is low or cut off. This is achieved by the combination of the claimed stem and body being arranged such that the stem can act on the body so as to close both the flow paths, and also by providing spring means that biases the body to act in this way.
  • a hose gun comprising a flow control valve arrangement for controlling flow through a fluid flow bore in the gun and a user control for controlling the control valve arrangement, wherein the flow control valve arrangement is arranged to open in a plurality of stages.
  • the flow control valve arrangement may be arranged to provide a plurality of fluid flow paths. In a first stage of opening, a first of the fluid flow paths may be opened for fluid flow. In a second stage of opening, a second of the fluid flow paths may be opened for fluid flow. In the second stage of opening, both the first and second fluid flow paths may be opened for fluid flow.
  • the fluid flow paths may be provided in parallel.
  • the expression “in parallel” is used in the electrical sense of the expression in contradistinction to "in series”.
  • valve arrangement is arranged to open in two stages and to provide two fluid flow paths.
  • a first of the flow paths is open to flow in the first stage and both of the flow paths are open to flow in the second stage.
  • the valve arrangement may be arranged so that the flow rate allowed through the bore is variable within some or all of the stages.
  • the valve arrangement may be operable progressively between a minimum state in which no flow is allowed through a respective fluid flow path and a maximum state in which the respective fluid flow path is fully open.
  • the minimum state in a particular stage may correspond to the valve arrangement being fully closed and no flow being allowed.
  • the minimum state in a stage may correspond to the respective fluid flow path being closed but another fluid flow path being open, possibly fully open.
  • the flow control valve arrangement may comprise a stem and a body which are moveable relative to one another between a position in which a fluid flow path through the valve arrangement is fully open and a position in which the fluid flow path is closed.
  • a valve seat may be provided in the body against which a shoulder portion of the stem abuts in the closed state.
  • the stem and body may be considered to comprise a first valve of the arrangement.
  • the body may be arranged to be received in the bore of the gun for movement between a position in which a second fluid flow path through the valve arrangement is fully open and a position, in which the second fluid flow path is closed.
  • a valve seat may be provided in the bore against which a shoulder portion of the body abuts in the closed state.
  • the body and bore may be considered to comprise a second valve of the arrangement.
  • At least one of the fluid flow paths may run at least partially through the body.
  • the stem may be arranged for axial movement within the body.
  • One extreme of the axial movement may correspond to the first valve being closed.
  • an abutment portion of the stem may abut against a corresponding abutment portion of the body.
  • the gun may be arranged so that operation of the user control causes axial movement of the stem and/or body within the gun.
  • Preferably movement of the user control over one range causes the first valve to open, so that the valve is in the first state and movement of the user control over another range causes the second valve to open, so that the valve is in the second state.
  • the valve arrangement may be such that the first valve is always open when the second valve is open.
  • the user control and valve may be arranged so that the user control acts on one of the stem and the body and movement of the control causes movement of the stem and body in two phases, in one of the phases the stem and body move together to open one valve and in the other of the phases the stem and body move relative to one another to open another valve.
  • the user control may act on the stem with drive transferred to the body or on the body with drive transferred to the stem.
  • the user control may be arranged to act on the stem so that movement of the user control causes movement of the stem to open the first valve.
  • the valve arrangement and user control may be further arranged so that continued movement of the user control causes the abutment portion of the stem to abut with the abutment portion of the body and the body to be moved by virtue of this abutment so opening the second valve.
  • the user control may comprise an actuator portion for transferring user applied movement to the body and/or stem.
  • the actuator portion may have a bearing surface towards one end for bearing on a corresponding control surface of the stem or body.
  • the control surface may be inclined relative to the axis of the stem and body so that movement of the actuator in at least one direction transverse to the axis of the stem and body whilst the bearing surface is in contact with the control surface causes axial movement of the stem and/or body relative to the actuator.
  • the user control may comprise a trigger portion.
  • the actuator portion may be arranged to transfer movement between the trigger and the body and/or stem.
  • squeezing the trigger can cause the body and/or stem to move to allow fluid to flow through the gun.
  • squeezing the trigger will first move the stem relative to the body to open the first valve and further squeezing of the trigger will move the body and stem together relative to the bore to open the second valve.
  • the body may be in the form of a cage in which a head of the stem is captured.
  • the body may comprise an aperture through which the head of the stem may be introduced for capture.
  • the head of the stem may comprise resilient barbs to help prevent accidental removal of the stem after capture.
  • the head of the stem and the aperture of the body may be dimensioned and arranged so that the head will fit through the aperture only when in predetermined relative orientations.
  • the stem may be rotated relative to the body after capture. This can aid in retention of the head in the cage. Further the relative rotation of these two components can allow the abutment portions of the stem and body to be aligned so as to correctly abut in use.
  • the end of the actuator carrying the bearing surface may pass through a side wall of the cage and into a slot in the stem. This arrangement can help to prevent rotation of the stem relative to the remainder of the gun and/or relative rotation of the stem and body during normal use and can therefore help to keep the stem and body in the desired relative orientations.
  • a tail of the stem may comprise at least one guide projection which is retained in a channel inside the bore of the gun after assembly. The interaction of the guide projection and channel can resist rotation of the stem in normal use.
  • a hose gun comprising a flow control valve arrangement for controlling flow through a fluid flow bore in the gun, and a user control trigger for controlling the control valve arrangement, wherein the control trigger is lockable in two predetermined positions, each of which corresponds to a respective setting of the control valve arrangement.
  • the flow control valve arrangement may be arranged to open in a plurality of stages, and the positions in which the control valve is lockable may correspond to the valve being in different, respective, stages of opening.
  • the gun may comprise a stop member and the trigger may comprise at least one abutment portion for abutting against the stop member.
  • the trigger may comprise a pair of abutment portions, a first of which abuts against the stop member when the trigger is in a first of the two predeteimined positions and a second of which abuts against the stop member when the trigger is in the second of the two predetermined positions.
  • the trigger may be pivotally mounted, and biased, in use, in one direction around the pivotal mounting.
  • the trigger may be arranged so that the respective abutment portion is urged against the stop member by the biasing force when the trigger is in the respective position.
  • the locking of the trigger in position may comprise or consist of the biasing force holding the respective abutment portion against the stop portion. This can mean that if the biasing force is overcome, the trigger may be moved in the direction against the biasing force.
  • the stop member may be moveable relative to the trigger between a first position for abutment between the stop member and the first abutment portion and a second position for abutment between the stop member and the second abutment portion.
  • the stop member may be biased towards an end position.
  • the stop member may comprise a detent against which one or both of the abutment portions of the trigger can operate to hold the stop member against movement under action of the biasing force.
  • the gun may be arranged so that when the stop member is the first position, the first abutment portion abuts with the stop member to hold the trigger in the first position and operates against the detent to hold the stop member in the first position. Further, the gun may be arranged so that when the stop member is the second position, the second abutment portion abuts with the stop member to hold the trigger in the second position and operates against the detent to hold the stop member in the second position.
  • the stop member may comprise a ridge on one surface which provides the detent.
  • the stop member may be a slidable button.
  • the stop member may have a release position in which it does not interfere with movement of the trigger.
  • the trigger may have a rest position. This rest position may correspond to the flow control valve arrangement being closed against fluid flow through the bore of the gun.
  • the stop member and trigger may be arranged so that when the trigger is in the rest position, and the stop member is in the release position, a portion of the stop member abuts against a portion of the trigger so as to hold the stop member against movement from the release position towards the first and second positions.
  • the ridge of the stop member may abut against one of the abutment portions of the trigger in this condition.
  • a hose gun comprising a gun body on which is mounted a multifunction rotatable outlet head portion wherein respective fluid outlet functions are selectable by rotating the head portion relative to the gun body, each fluid outlet function has a respective function outlet, the head portion comprises a directing portion providing fluid flow channels to the respective function outlets and at least one of the fluid flow channels has a path such that there is angular separation, about the axis of rotation of the head portion, between an inlet end of the respective channel and the respective function outlet.
  • the outlet head portion may have an outlet face.
  • the outlet face may comprise a rose plate which acts as the function outlet for one of the functions.
  • a function outlet may be provided centrally within the outlet face.
  • the outlet head portion may have a plurality of predetermined rotational positions each of which corresponds to the selection of one of the fluid outlet functions. The head portion may click into each of these positions. There may be equal angular spacing between each position and a respective adjacent position. The positions may be equispaced around the whole of the head portion.
  • the directing portion may comprise a pair of plates each defining a respective set of apertures and there may be directing fluid flow channels between the plates. At least some of the function outlets may comprise respective ones of the apertures in one of the plates. The inlet ends of the fluid flow channels may comprise respective apertures in the other of the plates.
  • the directing portion may comprise a base plate comprising a plurality of projecting walls providing edges of the fluid flow channels, with the body of the base plate providing a base to the channels.
  • the directing portion may also comprise a cover plate covering the open channels formed in the base plate.
  • the base plate may comprise a plurality of apertures, each aperture corresponding to an outlet end of a respective fluid flow channel.
  • At least some of the function outlets comprise a respective aperture in the base plate.
  • the cover plate may comprise a plurality of apertures, each aperture corresponding to an inlet end of a respective fluid flow channel.
  • the base plate may comprise some or all of the function outlets.
  • the outlet end of the flow channel comprises the respective function outlet.
  • the outlet end of the respective flow channel opens into a space behind the corresponding function outlet.
  • a hose gun comprising a gun body on which is mounted a multifunction outlet head portion wherein respective fluid outlet functions are selectable by rotating the head portion relative to the gun body, there being predetermined respective positions for each outlet function and the arrangement being such that there is equal angular separation between each position corresponding to, a respective selected function and a respective adjacent position corresponding to another selected function.
  • a hose gun comprising a gun body on which is mounted a multifunction outlet head portion wherein respective fluid outlet functions are selectable by rotating the head portion relative to the gun body and the arrangement is such that a predetermined and equal degree of rotation moves the head portion from a position corresponding to each selected function to a position corresponding to a respective adjacent function.
  • a hose gun comprising a perlator receiving recess.
  • a hose gun comprising a perlator receiving recess and a perlator unit received in the recess.
  • the perlator may be a "drop in” component.
  • Figure 1 is a side view of a hose gun
  • Figure 2 is a plan view of the hose gun shown in Figure 1;
  • Figure 3 is a front view of the hose gun shown in Figures 1 and 2;
  • Figure 4 shows a section, on line TV - TV, through the hose gun shown in Figure 3;
  • Figure 5 shows a section, on line V - V, through the hose gun shown in Figure 2;
  • Figure 6 is a front view of a hose gun including a first alternative head
  • Figure 7 is a front view of a hose gun including a second alternative head
  • Figure 8 is a section through a hose gun similar to that shown in Figure 5 but including the second alternative head of Figure 7 and showing a trigger of the hose gun locked in a first position;
  • Figure 9 shows the same section as that in Figure 8 except for the fact the trigger is locked in a second position
  • Figure 10 is a perspective view of the trigger portion of the gun shown in Figure 8 with the trigger locked in the first position;
  • Figure 11 is a perspective view of the trigger portion of the gun shown in Figure 9 with the trigger locked in the second position;
  • Figures 12A and 12B show a base plate of a directing portion of the head of the hose gun shown in Figures 1 to 5;
  • Figure 12C shows a cover plate of the directing portion of the head of the hose gun shown in Figures 1 to 5;
  • Figure 13 shows a cover plate of a directing portion of the head of the hose gun shown in Figure 6.
  • Figures 1 to 5 show a hose gun comprising a main body 1 having at one end a fluid inlet 2 and at the other end an outlet head 3.
  • the head 3 is mounted on the gun body 1 in a conventional way and comprises a static portion 31 which in effect forms part of the body of the gun, and a rotatable portion 32.
  • the head 3 is a multifunction head providing 7 different outlet functions. Each of these functions is selected by rotating the head 32 relative to the body 1 to the appropriate position.
  • the gun comprises a trigger 4 which is operable by the user to control a fluid flow control valve arrangement 5 provided within a fluid flow bore 6 of the gun body 1.
  • head may be used on the gun and two further examples are shown in
  • FIG. 6 The head of the gun shown in Figure 6 is a six function head and the head shown in Figure 7 is a single function head.
  • Figures 8 to 11 show more detail of the gun shown in Figure 7 which is the same as that shown in Figures 1 to 5 except for the fact that the gun includes the second alternative head as mentioned above.
  • Figures 8 to 11 show the workings of the body of the gun in more detail than Figures 1 to 5.
  • Figures 8 to 11 show the workings of the body of the gun in more detail than Figures 1 to 5.
  • the trigger 4 is pivotally mounted to the body 1 and biassed towards an extended, "off", position in which the end of the trigger nearest the fluid inlet 2 projects as far as possible from the gun body 1.
  • An actuating member 7 is provided within a guide 71 in the gun body 1 and has a head portion 72 which acts on the internal surface of the trigger 4 and a tail portion 73 for actuating the valve arrangement 5 as will be described in more detail below.
  • a spring 74 is provided around the guide 71 and serves to force the head 72 of the actuating member 7 away from the guide 71 and into contact with the internal surface of the trigger 4. This action provides the biassing force mentioned above that acts on the trigger 4 to tend to cause it to move to its extended position.
  • the valve arrangement 5 comprises a stem portion 51 and a body portion 52.
  • the stem portion has a head 53 which is captured in a cage formed by the body portion 52 and further has a tail 54.
  • the tail 54 is seated on a spring 55 and includes a guide finger 56 located in a groove 61 in the bore 6 to help prevent rotation of the stem 51 relative to the bore 6.
  • the head 53 of the stem comprises an inclined control surface 57 on which a bearing surface of the tail 73 of the actuating member 7 bears during operation of the trigger 4.
  • the control surface 57 is provided by virtue of there being a slot through the head 53 of the stem. One of the side walls of the slot is visible in Figures 5, 8 and 9 behind the tail 73 of the actuating member 7.
  • Axial movement of the stem 51 relative to the body 52 is allowed to some degree but the head 53 and body 52 comprise respective abutment portions 58 (see Figure 8) which abut against one another once a certain degree of axial movement of the stem 51 towards the water inlet 2 has occurred.
  • the head 53 of the stem 51 is dimensioned and arranged so that it may be inserted through an aperture at the base of the body portion 52 during assembly so as to achieve its captured position as shown in Figures 5, 8 and 9.
  • the aperture in the body portion 52 and the head 53 are arranged so that in one relative orientation the head 53 will pass through the aperture whereas after rotation of the stem relative to the body, the head is captured within the cage like body portion 52 and the abutment portions 58 can act against one another as required.
  • a pair of barbs are provided; one on each of the side walls of the slot formed in the head 53. These barbs help to prevent accidental removal of the head 53 from the body 52.
  • the valve arrangement 5 provides two stage valve opening. This is achieved by providing two separate fluid flow paths through the valve arrangement 5 (see Figures 8 and 9).
  • a first valve is provided by the extreme end of the head 53 having a shoulder 59 carrying an O- ring seal which can act against a seat 510 provided by the body 52.
  • the second valve is provided by the extreme end of the body 52 having a shoulder 511 carrying an O-ring seal which can act against a seat 512 provided in the bore 6 of the gun body 1.
  • FIGS 5, 8 and 9 show the trigger 4 and valve arrangement 5 in various stages of operation.
  • the trigger 4 is shown in the extended "off” position and the valve arrangement 5 is fully closed with the seal on the shoulder 59 formed at the extremity of the head 53 firmly in abutment with the seat 510 provided by the body portion 52 and similarly, the seal on the shoulder 511 at the extremity of the body portion firmly seated against the seat 512 provided in the bore 6 of the gun body 1. It will also be seen in Figure 5 that, in this state, the abutment portions 58 of the stem 51 and body 52 are not in contact with one another.
  • the trigger 4 is partially depressed and the valve arrangement 5 is partially open.
  • the first valve provided between the stem 51 and body 52 is open by virtue of the seal on the respective shoulder 59 having moved away from the seat provided by the body portion 510.
  • the stem 51 has moved axially towards the fluid inlet 2. This movement has been caused by the tail 73 of the actuating member bearing on the control surface 57 of the stem 51 under squeezing action of the trigger 4.
  • valve arrangement 5 in the present embodiment can open in two distinct stages. However, within each stage there are still different degrees by which the valves may be open.
  • a small depression of the trigger will crack open the first valve provided between the head shoulder 59 and the body seat 510 and continued depression of the trigger 4 will increase the spacing between these two components increasing the fluid flow path.
  • the abutment portions 58 will abut against one another and continued movement of the trigger 4 will cause the second valve to crack open. From this point, further movement of the trigger 4 increases the fluid flow path between the body shoulder 511 and the associated seat 512.
  • the guns shown in Figures 1 to 11 also include an arrangement for locking the trigger in two "on" positions.
  • Figures 8 and 10 show the gun body in one of the locked trigger positions and
  • Figures 9 and 11 show the gun in the other of the locked trigger positions.
  • the locking arrangement comprises a stop member 8, in the form of a slidable button, which is biassed by a spring 81 towards an extended, release, position as shown in Figure 5.
  • the stop member 8 includes a ridge 82 which acts as a detent and further has an abutment surface 83.
  • the trigger 4 comprises a pair of abutment projections 41, 42, in the region of the stop member 8. These abutment projections are perhaps most clearly shown in Figures 10 and 11.
  • a first of the trigger abutment projections 41 abuts with the abutment surface 83 of the stop member 8 and furthermore, is urged into contact with the stop member 8 by virtue of the biassing force provided by the spring 74 and actuating member 7 as described above.
  • the second trigger abutment projection 42 is behind (i.e. further into the gun body 1) the abutment surface 83 and thus does not affect the position of the trigger 4.
  • the first projection 41 of the trigger also acts on the ridge 82 and serves to prevent the stop member 8 moving back to its release position (as shown in Figure 5) under the action of spring 81.
  • the stop member 8 also has two locked positions each corresponding to a respective trigger 4 position.
  • stop member 8 When the trigger 4 is in the extended, off, position and the stop member 8 is in the release position as shown in Figure 5, the portion of the stop member 8 including the ridge 82 abuts with a ledge 43 on the trigger 4 and the first projection portion 41 such that movement of the stop member 8 towards a retracted position (eg as shown in Figure 8 or 9) is prevented by interaction between the stop member 8 and the trigger 4.
  • the stop member 8 may only be actuated once the trigger 4 itself has been actuated by a predetermined amount.
  • the two abutment projections 41, 42 are behind the abutment surface 83 and so do not affect the position of the trigger 4.
  • different gun heads may be provided on the gun as illustrated in Figures 3, 6 and 7.
  • the head shown in Figure 3 there are seven fluid outlet functions as mentioned above. These seven functions include five different spray patterns provided by five different spray outlets 91.
  • the spray outlets 91 are dimensioned and arranged to give a respective spray shape and are angularly equispaced around the face of the head.
  • the head comprises a rose plate 92 which allows the fluid to leave the gun as through a conventional watering rose and further comprises a perlator 93 provided at the centre of the rose plate 92.
  • the perlator 93 is a proprietary "drop in” component. That is to say the gun head is moulded in such a way as to provide a receiving location for the perlator 93 and to provide fluid flow to the input of the perlator but the perlator itself is a self contained and off the shelf component.
  • Such perlators are more normally used in bathroom shower heads and may easily be obtained commercially.
  • These heads therefore comprise a directing portion 10, more specifically the rotatable portion of the head 32 comprises the directing portion 10.
  • a directing portion 10 of the seven function head may be seen in Figures 4 and 5 but more detail is shown in Figures 12 A, 12B and 12C.
  • the static portion 31 of the head acts as a link between the rotatable portion of the head 32 and the remainder of the body of the gun 1.
  • the static portion 31 comprises a fluid communication channel 33 which provides a fluid flow path to a supply outlet 34 from which inlets 101 of the directing portion 10 may be supplied with fluid.
  • the directing portion comprises a plurality of inlets 101 which may be selectively presented to the supply outlet 34.
  • the supply outlet 34 is offset from the rotational axis of the rotatable portion 32 of the head 3. Therefore as the directing portion 10 is rotated as part of the rotatable portion of the head 32 the different directing portion inlets 101 are presented to the supply outlet 34.
  • the function of the directing portion is to direct water from the supply outlet 34 to the correct functional outlet, be that a spray outlet 91, the rose plate 92, or the perlator 93.
  • the directing portion comprises a base plate 110 and a cover plate 120.
  • the two sides of the base plate 110 of the directing portion 10 can be seen in Figures 12A and 12B.
  • a first side of the plate, which is shown in Figure 12A comprises the spray outlets 91. In the assembled head these project through the rose plate 92 which otherwise covers this side of the base plate shown in Figure 12A.
  • this first side of the base plate 110 comprises a rose outlet 111 for feeding fluid to the rose plate 92 and a perlator receiving recess 112 and associated outlet aperture 113 for feeding fluid to the perlator 93.
  • the second side of the base plate 110 which is shown in Figure 12B, comprises a plurality of directing channels 114.
  • the cover plate 120 comprises the plurality of apertures 101 which act as the inputs to the directing portion 10. Each of these apertures 101 corresponds to a different one of the fluid outlet functions of the gun.
  • the cover plate 120 covers the second side of the base plate 110 and is welded thereto.
  • the directing channels 114 and cover plate 120 together define appropriate fluid flow paths from each inlet aperture 101 provided in the cover plate 120 to the appropriate outlet 91, 111, 113 on the other side of the base plate 110.
  • the channel portions 114 provide an angular offset between some of the outlets 91, 111 and the respective inlet 101, or to put this another way, they provide a path which includes a tangential or circumferential component rather than just radial and/or axial components. Not all of the channels provide such a tangential or circumferential path component.
  • the channel provided for supply to the perlator 93 has a path with just radial and axial components and that two of the functional spray outlets have entirely axial supply channels with no radial or tangential component.
  • three of the supply channels 114a, 114b and 114c provide a path having a substantial tangential component and a fourth 114d provides a path having a minor tangential component.
  • the cover plate 120 also comprises a plurality of depressions 121.
  • the depressions 121 are equally spaced around the whole of the circumference of the cover plate 120.
  • the static part 31 of the head comprises a spring loaded plunger 130.
  • This plunger is biassed towards the cover plate 120 and has a nose portion which is arranged to click into the depressions 121 in the cover plate 120.
  • the plunger 130 and depressions 121 act together to provide an indexing function for the rotation of the rotatable part 32 of the head. That is to say as the rotatable portion 32 is rotated relative to the static portion 31, the spring loaded plunger 31 clicks into and out of the depressions 21.
  • the depressions 121 are equally spaced around the cover plate 120 and moreover the inlet apertures 101 are also equally spaced around the cover plate. This of course corresponds to a situation where rotational movement of the rotatable part 32 through a predetermined number of degrees causes the gun to be moved from one function to the next. In the present case, as there are seven functions, an angular movement of just under 51.5° is required to move from one function to the next.
  • Rotating the rotatable part 32 of the head by a fixed amount between functions gives a very pleasing mode of operation for the user, and similarly, the symmetric arrangement of spray outlets 91 around the face of the head gives a pleasing appearance.
  • the directing portion overcomes this problem by directing the fluid flows appropriately, including the provision of angular shifting, by virtue of having the structure explained above.
  • cover plate 120 for the six function head six inlet apertures 101 are provided and there is a blanking portion 102 in place of the seventh aperture.
  • the cover plate 120 is welded onto the base plate 110 such that the blanking portion lines up with the channel which is used to supply fluid to the perlator in the seven function head.
  • the perlator output is sealed and serves no function. At the same time however, the remainder of the direction portion 10 can function as in the seven function head.
  • the cover plate shown in Figure 13 for the six function head includes six indexing depressions 21 which correspond to the six apertures provided. In this way there will only be a positive click into position when the head is rotated to a functioning position. It will also be noted that there is equal angular separation between the apertures 101 and the indexing depressions 121 around the majority of the plate but there is a gap in this array corresponding to the blanked off aperture. Thus, in use moving the head by a fixed number of degrees, again just under 51.5°, will move between one function and the next apart from where there is this gap. Of course, however, the head may be moved in either direction so there is still at least one adjacent function which can be reached by the standard angular movement.
  • the directing portion 10 could be arranged so that the indexed positions, i.e. operating positions, were equispaced around the whole of the head.

Landscapes

  • Nozzles (AREA)

Abstract

L'invention a trait à un pistolet d'arrosage, qui comprend un corps principal (1) dans lequel est placé un agencement de vanne (5). L'agencement de vanne (5) est situé dans un alésage du pistolet qui sert de conduit de fluide entre l'orifice d'admission de fluide (2) du pistolet et un orifice de sortie de fluide du pistolet. L'agencement de vanne (5) comprend une partie tige (51) et une partie corps (52), la partie tige (51) possédant une tête (53) qui est capturée dans un logement formé par la partie corps (52). La partie tige (51) et la partie corps (52) peuvent se déplacer l'une par rapport à l'autre pour former une première vanne ; et la partie corps (52) peut se déplacer par rapport à une structure adjacente du pistolet qui définit au moins une partie de l'alésage pour former une seconde vanne. Une gâchette (4) pouvant être actionnée par un utilisateur peut déplacer la partie tige (51) pour que cette dernière ouvre la première vanne, puis continuer à déplacer la partie tige (51) pour que cette dernière bute contre la partie corps (52) et ouvre ainsi la seconde vanne. Le pistolet selon l'invention comprend également un ressort (55) qui agit sur la partie corps (52) de sorte que, lorsque la gâchette (4) est libérée, la partie tige (51) soit poussée contre la partie corps de façon à fermer à la fois la première vanne et la seconde vanne.
EP04768171.3A 2003-08-21 2004-08-23 Pistolets d'arrosage Active EP1675685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0319698.7A GB0319698D0 (en) 2003-08-21 2003-08-21 Hose guns
PCT/GB2004/003615 WO2005018814A2 (fr) 2003-08-21 2004-08-23 Pistolets d'arrosage

Publications (2)

Publication Number Publication Date
EP1675685A2 true EP1675685A2 (fr) 2006-07-05
EP1675685B1 EP1675685B1 (fr) 2013-11-27

Family

ID=28460089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04768171.3A Active EP1675685B1 (fr) 2003-08-21 2004-08-23 Pistolets d'arrosage

Country Status (3)

Country Link
EP (1) EP1675685B1 (fr)
GB (1) GB0319698D0 (fr)
WO (1) WO2005018814A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11267003B2 (en) 2005-05-13 2022-03-08 Delta Faucet Company Power sprayer
WO2006124721A2 (fr) 2005-05-13 2006-11-23 Masco Corporation Of Indiana Pulverisateur puissant
US7240858B2 (en) * 2005-05-31 2007-07-10 King-Yuan Wang Trigger mechanism for watering nozzles
CN103406224B (zh) * 2013-08-01 2015-10-21 宁波大叶园林科技有限公司 一种防冻的远端止水的水枪
GB2518692B (en) 2013-09-30 2019-12-18 Exel Industries Sa Hose guns
EP3116658B1 (fr) * 2014-03-10 2020-07-15 Husqvarna AB Dispositif de distribution d'eau avec régulation ergonomique du volume
US11856942B2 (en) 2016-02-12 2024-01-02 Kenneth D. Crenshaw Dual nozzle sprayer
US9814227B2 (en) 2016-02-12 2017-11-14 Kenneth D. Crenshaw Dual nozzle spray gun

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191202909A (en) * 1912-02-05 1912-10-10 Frederick Charles Lynde Improvements in and relating to Hose Pipes and Taps therefor.
US3709259A (en) * 1971-04-26 1973-01-09 V Hechler Hand operated low pressure valve
DE29716243U1 (de) * 1997-09-10 1999-01-14 Nonnenmacher Walter Blaspistole
DE20103141U1 (de) * 2001-02-22 2001-05-10 Kaercher Gmbh & Co Alfred Handspritzpistole für ein Hochdruckreinigungsgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005018814A2 *

Also Published As

Publication number Publication date
WO2005018814A3 (fr) 2006-06-29
GB0319698D0 (en) 2003-09-24
EP1675685B1 (fr) 2013-11-27
WO2005018814A2 (fr) 2005-03-03

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