CA2568069A1 - Removable nozzle shroud for fluid dispenser - Google Patents

Abstract

A fluid dispenser with a removable nozzle shroud which can readily be removed without requiring any tools and without the need to disassemble the dispenser other than to the extent that may be required to replace a replaceable fluid containing reservoir and remove the pump mechanism.

Description

Title REMOVABLE NOZZLE SHROUD FOR FLUID DISPENSER
Scope of the Invention [0001 J This invention relates to a removable shroud for a fluid dispenser and more particularly a nozzle shroud which can be removed when a removable fluid bottle is removed from the dispenser.

Background of the Invention [00021 Fluid dispensers are known which have covers and nozzle shrouds and whicll suffer a disadvantage that the cover or the nozzle shroud cannot be easily removed without significant disassembly of the dispenser.

Summary of the Invention [0003J To at least partially overcome these disadvantages of previously known devices the present invention provides a fluid dispenser having a removable nozzle shroud which can readily be removed from the fluid dispenser for replacement by another nozzle shroud.
100041 An object of the present invention is to provide a fluid dispenser with a removable nozzle shroud which can readily be removed without requiring any tools and without the need to disassemble the dispenser other than to the extent that may be required to replace a replaceable tluid containing reservoir and remove the pump mechanism.
100051 In one aspect the present invention provides:
a fluid dispenser having a housing an axle meniber carried by the housing, the axle member disposed about a longitudional axis, the axle member being movable relative the housing in a direction normal to the axis between a first rear position and a second forward position, an axle biasing member urging the axle member to assume the first rear position, the axle member being movable from the first rear position to the second forward position against the bias of the biasing member, a cover coupled to the housing for movement between a closed position in which the dispenser is operative for dispensing fluid and an open position in which access is provided to an iriterior of the housing, the cover having a rearwardly extending hook member, the hook member removably engaging the axle member, wherein when the hook member engages the axle member:(a) the cover is in the closed position when the axle member is in the first rear position, (b) the axle biasing member in urging the axle member to the first position urges the cover to the closed position, and (c) movement of the cover from the closed position to the open position moves the axle rnember from the first rear position to the second forward position against the bias of the axle biasing member, the hook member being engagable and disengagable from the axle member for coupling anci uncoupling of the cover relative to the housing when the axle member is in the second front position and the cover member is proximate the closed position .
[00061 In another aspect the present invention provides a fluid dispenser having a housing a cover coupled to the housing for movement between a closed position in which the dispenser is operative for dispensing fluid and an open position in which access is provided to an interior of the housing, the cover and the housing coupled together by a releasable connection inechanism including an axle member disposed about an longitudional axis carried by a first member selected froni the cover and the housing, and a hook member carried by a second member which selected from the cover and the housing but is not the first member, the one of the axle member and hook member which is carried by the housing being movable relative the housing in a direction normal to the axis between a first rear position and a second forward position, a biasing member urging the one of the axle member and hook member which is carried by the housing to assume the first rear position, the one of the axle member and hook member which is carried by the housing being movable from the first rear position to the second forward position against the bias of the biasing member, the hook member removably engaging the axle member, wherein when the hook member engages the one of the axle member and hook member which is carried by the housing:(a) the cover is in the closed position when the one of the axle meinber and hook member which is carried by the housing is in the first rear position, (b) the axle biasing member in urging the one of the axle member and hook member which is carried by the housing to the first position urges the cover to the closed position, and (c) movement of the cover from the closed position to the open position moves the one of the axle member and liook member which is carried by the housing from the first rear position to the second forward position against the bias of the axle biasing member, the hook member being engagable and disengagable from the axle member for cotipling and uncoupling of the cover relative to the housing when the one of the axle member and hook member which is carried by the housing is in the second front position and the cover niember is proximate the closed position.

Brief Description of the Drawings [00101 Further aspects and advantages of the present invention will become apparent from the following description taken together with the company drawings in which:
100111 Figure 1 is a schematic perspective view showing a fluid dispenser in accordance witli the first embodiment of this invention in use by a user to dispense fluids;

100121 Figure 2 is a schematic perspective view showing the dispenser of Figure 1 with a nozzle shroud in an open position showing the removal and application of a pump mechanism;
[0013] Figure 3 is a schematic perspective view of the fluid dispenser of Figure l with the nozzle shroud in a closed position and showing the insertion of a removable reservoir bottle;
100141 Figure 4 is a schematic perspective view of the fluid dispenser of Figure 1 with nozzle shroud in a closed position, the reservoir bottle and pump mechanism removed, and showing a user engaging the dispenser in a manner to permit removal of the nozzle shroud;

100151 Figure 5 is a schematic perspective view of the dispenser of Figure 1 with the reservoir bottle and pump mechanism removed and showing the nozzle shroud held by a user ready ior coupling to the dispenser housing;
100161 Figure 6 is a perspective rear view of the nozzle shroud shown in Figure l;
100171 Figure 7 is a perspective view of a cover plate for use with dispenser of Figure 1;
100181 Figure 8 is a rear perspective view of the housing chassis;
[0019] Figure 9 is a schematic partially cross-sectioned side view of the dispenser of Figure 1 in a condition ready for use in dispensing fluids;
100201 Figure 10 is a schematic side view as shown in Figure 9 but enlarged and showing the nozzle shroud in an unlocked closed position;
100211 Figure 11 is a side view similar to Figure 10 but showing the nozzle shroud in an intermediate position;
[00221 Figure 12 is a side view similar to Figure 10 but showing the nozzle shroud in an open position;
100231 F'igure 13 is a side view similar to Figure 10 but showing the shroud in an unlocked closed position but with the axle member moved forwardly relative to the housing chassis;
[0024) Figure 14 is a schematic side view similar to that in Figure 10 but showing the shroud in a locked, closed position; and [0025] Figure 15 is a perspective view similar to Figure 6 but showing a second embodiment of the invention.

Detailed Description of the Drawings [0026[ Reference is made first to Figures 1 to 5 which illustrates a fluid dispenser 10 having a housing 16 which as best seen in Figure 5 includes a back plate 17, side walls 18 and 19 and a top plate 20 so as to define therein an interior 21. A housing chassis 22 is fixedly mounted to the back plate 17 of the housing 16 .
[0027] The housing chassis 22 is best seen in Figure 8 as including a pair of vertical side plates 43 and 44 connected by a vertical back plate 45 and a horizontally extending support plate 29. Two axles studs 25 are provided, each extending laterally outwardly from the side plates 4.3 and 44.

[00281 A lever mechanism 23 is pivotally mounted onto the housing chassis 22.
The lever mechanism includes a U-shaped lever arm 12 which extends forwardly for manual engagement by a user. On each side, a side arm of the U-shaped lever 12 extends rearwardly and is pivotally connect to one of the stud axles 25 on the chassis for pivoting about a horizontal axis.
As seen in Figure 5 a lever bridge plate 24 extends side to side between the two arms of the lever 12. Two lever springs 26 bias the lever 12 upwardly with an upper end of each spring 26 engaging the lower surface of the lever bridge plate 24 and the lower surface of each spring 26 being supported on an upper surface of the support plate 29. The support plate 29 has a central slot 30 therein open forwardly. The back plate 17 carries a horizontally forwardly extending ledge 39. As seen in Figure 9, a reinovable bottle 35 is adapted to have its bottom surface 38 supported on the support ledge 39 to support the bottle 35 within the interior of the housing 16 with a reduced sized neck of the bottle 35 about an upper open end 36 of the bottle 35 being directed upwardly centrally below the central slot 30.
100291 A removable pump mechanism 28 is best seen in Figure 2 as comprising a piston chamber forming member 42 within which a piston element 41 is coaxially vertically slidable to draw fluid from an inlet end 38 of a dip tube 37, up through the dip tube 37 to inside the piston chamber forming member 42 and into the piston element 41 for dispensing out of a discharge outlet at the forward end of an elongate forwardly extending hollow tubular nozzle 13. The piston chamber forming member 42 carries an upper flange 33 which is adapted to slide rearwardly into the central slot 30 of the support plate 29 and be held fixed in a rear end of the central slot 30 other than for sliding forwardly for removal.
[00301 When the pump mechanism 28 is coupled to the support plate 29 of the housing chassis 22, on manual movement of the lever 12 downwardly, the lever bridge plate 24 engages an upper surface on the piston element 41 to move the piston element 41 downwardly and dispense fluid. An internal spring (not shown) within the piston chamber forming member 42 biases the piston element 41 upwardly to an extended position.

[00311 As shown in Figure 1, a user may use one arm 11 to manually move the lever 12 downwardly so as to dispense fluid 40 form the nozzle 13 onto the user's hand 14.
100321 A nozzle shroud 27 is provided adapted to be removably coupled to the housing chassis 22. When ready for use to dispense fluid the pump mechanism 28 fixedly secured to the chassis 22, a bottle 35 is supported on the housing 16 and the nozzle shroud 27 is in a closed position as shown in Figure 1. In this position, the pump mechanism 28 will extend downvrardly from the housing chassis 22 and without movement of any of the elements shown other than the bottle 35, the bottle 35 may be attached to or removed from the dispenser 10 as sliown in Figure 3 with the dip tube 37 located through the open upper end 36 of the bottle 35.
The bottle 35 is moved upwardly and inwardly until its bottom 38 engages on the support ledge 39. The bottle 35 sits on support ledge 39 against removal.
[0033) Referring to Figure 8, each of the housing chassis sidewalls 43 and 44 have axle slotways 46 and 47, each extending generally horizontally from a forward end 48 to a rear end 49. A rod like cylindrical axle member 50 extends horizontally through each of the axle slotways 46 and 47 and present its two distal ends extending laterally outwardly froni each of the side plates 43 and 44. The axle member 50 is cylindrical about a linear axis 51.
[00341 The housing chassis 22 caries underneath the support plate 29 and on the inside of each of the side plates 43 and 44 two spring housings 54 and 55 each of which includes an interior bore closed at a forward blind end 55 and open at a rear end. Two helical coil axle springs sclienlatically shown as 52 and 53 are received in each of the springs housings 54 and 55. Each axle spring 52 and 53 has a forward end engaging the forward blind end 55 of its respective spring housing 54 and 55 and a rearward end which engages on a forward side surface of the axle member 50. The spring housings 54 and 55 are seen to have their side walls partially cut away in lateral alignment with the axle slotways 46 and 47 such that the axle member 50 is free to slide forwardly and rearwardly within the axle slotways 46 and 47 between the forward end 48 and the rear end 49 against the bias of the axle springs 52 and 53.
[00351 Referring to Figure 3 and 5, the nozzle shroud 27 has a top wall 64, sidewalls 65 and 66, a front wall 67, and a bottom wall 68. As seen in Figure 4, a central slotway 99 extends upwardly centrally through two spaced portions of the bottom wall 68 for receipt of the nozzle 1:3. The central slotway 99 is also seen in the rear view of Figure 6 as bounded by sidewalls 100 and 101 and a top wall 102. The nozzle shroud 27 has two hook arms 69 and 70 which extend rearwardly from a lower portion of the sidewalls 65 and 66. Each of hook arm 69 and 70 present a hook member 71 at a rear end thereof with a rearwardly extending shank portion 72 extending to a bight forming portion 73 which extends to a distal forvvard end 74 defining a blind slotway 75 therein closed at rear blind end 76 and open at an entranceway 77.
A camming ramp 78 on a forward lower side of the blind entranceway 77 extends rearwardly and downwardly.
100361 "I'he nozzle shroud 27 is adapted to be coupled to the housing chassis 22 with the axle member 50 being engaged within the blind end 76 of the hook member 71 on each of the hook arms 69 and 70.
[0037] As seen in Figure 6, on the inside of each of the hook arms 69 and 70, a stop member 103 is provided with a downward directed stop surface which is adapted to engage an upwardly directed stop surface 105 carried on a forward most portion of each of the side plates 43 and 44 as seen in Figure 8. In use for example in an unlocked closed position as shown in Figure 10 with the axle member 50 in a rear most position in the axle slotways 46 and 47, the nozzle shroud 27 is supported, amongst other things, by the stop members 103 engaging on the stop surfaces 105.
[0038] The axle member 50 is biased by the axle springs 52 and 53 to assume a rear position adjacent to rear ends 49 of the axle slotsways 46 and 47. The axle member 50 may be moved against the bias of the axle springs 52 and 53 to a forward position in which the axle member 50 is adjacent to forward end 48 of the axle slotways 46 and 47. In use of the dispenser for dispensing as show in Figure 1 or for replacement of the bottle as shown in Figure 2, the housing chassis 22 is in the closed position shown in Figure 10 with the axle member 50 in its rear position.
[0039] The nozzle shroud 27 may be moved from the unlocked closed position of Figure to the intermediate position of Figure 11 and then to the open position of Figure 12. When the dispenser is in the unlocked open position of Figure 12, which is also the position shown in Figure 2, the pump mechanism 28 may be removed from or coupled to the housing chassis 22.
[0040] As seen in Figure 6, adjacent each stop member 103 but forwardly thereof a forwardly extending catch cavity 80 is provided in each hook arm 69 and 70 adapted to receive forward most portions of catch members 59 and 60 carried on each of the side plates 43 and 44 as seen in Figure 8. As seen, the upwardly directed stop surface 105 form the top surfaces of the catch members 59 and 60. The upwardly directed stop surfaces 105 extend rearwardly into a catch slotway 107 only one of which is shown on the left hand side in Figure 8. The catclz slotway 107 is adapted to receive the stop member 103 on the inside of the hook ann 69 corresponding to the stop member 103 shown on the right hand hook arm 70 in Figure 6.
100411 In the unlocked closed position of Figure 10, the location of the stop members 103 within the catch slotway 107 and the location of the forward ends of the catch members 59 and 60 within the catch cavities 80 prevent pivoting of the nozzle shroud 27 about the axle member 50 witli the axle member 50 in its rear position. Additionally, the upper rear edge 110 of the nozzle shroud is disposed underneath the top wall 20 of the housing 16 further blocking movement of the nozzle shroud 27 upwardly as pivoted on axle member 50.
[0042] From the unlocked closed position of Figure 10, the nozzle sliroud 27 is inoved to the unlocked intermediate position of Figure 11 by a user grasping the nozzle shroud 27 and pulling it forwardly such that the hook arms 69 and 70 draw the axle member 50 to the forward position against the bias of the axle springs 52 and 53. In the intermediate position, the nozzle shroud 27 is moved sufficiently forwardly such that the upper edge 110 of the top wall 64 moves forwardly of the top wall 20; the catch cavities 80 move forwardly out of engagement with the catch members 59 and 60; and the stop members 103 move forwardly out of engagement with the slots 107. From the position of Figure 11, with the axle member 50 maintained in the forward position, the nozzle shroud 27 may be pivoted about 45 upwardly to the open position of Figure 12 with a significant portion of the nozzle shroud 27 disposed above the top wall 20. When the nozzle shroud 27 is released from manual engagenient in the open position of Figure 12, the bias of the axle springs 52 and 53 draws the axle member 50 from the forward position towards the rear position and thus draws the nozzle shroud 27 and notably edge surfaces of its sidewalls 66 into engagement with the top wall 20 holding the nozzle shroud 27 in the open position of Figure 12. In the open position of Figure 12 as shown in Figure 2, the pump mechanism 28 may be inserted and removed.
[0043] Reference is made to Figure 4 showing the dispenser 10 in a condition that the bottle 35 and the pump mechanism 28 have been removed. In the condition in Figure 4 the nozzle shroud 27 may be removed for replacement by another nozzle shroud.
Removal of nozzle shroud 27 is accomplished by a user manually moving the axle member 50 from the rear position to a forward position while keeping the nozzle shroud 27 in a closed, rearward position. Figure 4 shows a user placing one hand inside the interior 21 of the housing 16 rearward of the axle member 50 to manually move the axle member 50 from its rear position to a forward position against the bias of the axle springs 53 and 54. In so doing, the axle member 50 engages the camming ramp 78 in the blind slot way 75 of the hook meniber 71 which tends to slightly rotate the hook arms 69 and 70 downwardly. As indicated in Figure 4 with minor pivoting of the nozzle shroud 27 downwardly, the axle member 50 becomes, as shown in Figure 13, above and clear of the hook members 71 and from the position of Figure 13, the nozzle shroud 27 may be removed from engagement with the housing 16 and its housing chassis 22 merely by sliding forwardly. A replacement nozzle housing 27 inay be coupled to the housing chassis 22 by reversing these steps.
100441 Reference is made to Figure 14 showing the nozzle shroud 27 in the same closed position as in Figure 10 however with a locking cover plate 87 as shown in Figure 7 secured to the dispenser 10 so as to prevent movement of the nozzle shroud 27 from the closed position. The locking cover plate 87 has a front wall 88 with an upper edge 91. The cover plate 87 extends rearwardly as a bottom wall 89 and then downwardly as a vertical rear wall 90. As seen in Figure 2, the housing back plate 17 has an oval opening 112 at its lower rear.
The rear wal.l 90 of the locking cover plate 87 is to carry a locking mechanism 130 with a locking arm 132 which can be rotated 90 degrees about a handle axis 134 between a fii-st position in which the locking arm 132 can extend through the opening 112 and another position in which the locking arm 132 is disposed behind the rear wall 90, a front washer 138 is in front of'the cover plate 87 and the locking cover plate 87 is fixed to the housing 16 against vertical or horizontal movement.
[00451 Referring to Figure 6, at a forward end of each of the hook arms 69 and 70, upwardly extending and downwardly open lock slots 92 are provided into which the top edge 91 of the front wall 88 of the cover plate 87 is to extend. The cover plate 87 by reason of being received within the slots 92 prevent the nozzle shroud 27 from being slid forwardly and here presents movement of the nozzle shroud 27 from the closed position to open position.
The locking cover plate 87 has the advantage of closing the interior 21 of the housing from view, securirig the bottle and pump mechanism against tampering, and as well securing the nozzle shroud 27 against being opened.

100461 Reference is made to Figure 15 which is a schematic perspective view of a second embodiment of a nozzle shroud 27 which differs from the embodiment shown in Figure 6 in that wliereas in Figure 6 the housing chassis 22 carries the axle member 50 to be engaged by the hook members 71 carried on the nozzle shroud 27, in Figure 15 this arrangement is reversed with two stub axles 118 carried on the nozzle shroud 27 to extend laterally inwardly from the arms 69 and 70 on the nozzle shroud 27 as shown in Figure 15 and with hook members provided as hook-like slotways 119 provided on opposite sidewalls 121 and 123 of a carriage member 120, which carriage member 120 is to be slidably mounted to a suitably modified housing chassis (not shown) for slidable forward and rearward movement as shown by arrow 130 relative the housing chassis with the carriage biased rearwardly relative the housing chassis as by a spring (not shown) to a rear portion. With the stub axles 118 received in a forward end 132 of the slotways 119, the carriage member 120 will draw the nozzle shroud 27 rearwardly relative the housing chassis as in the case with the first embodiment of Figures 1 to 14. With the stub axles 118 received in the forward end 132 of the slotways 119 manual drawing the nozzle shroud 27 forwardly will also draw the carriage member 120 forwardly against the bias of its spring. Manually moving the carriage member 120 forwardly separately from the shroud nozzle 27 will permit release of the stub axles 118 from the openings 133 to the slotways 119.
[00471 While the invention has been described with reference to a preferred embodiment many niodifications and variations will occur to a person skilled in the art.
For a definition of the invention references made to the following claims.

Claims (19)

1. A fluid dispenser having a housing an axle member carried by the housing, the axle member disposed about a longitudinal axis, the axle member being movable relative the housing in a direction normal to the axis between a first rear position and a second forward position, an axle biasing member urging the axle member to assume the first rear position, the axle member being movable from the first rear position to the second forward position against the bias of the biasing member, a cover coupled to the housing for movement between a closed position in which the dispenser is operative for dispensing fluid and an open position in which access is provided to an interior of the housing, the cover having a rearwardly extending hook member, the hook member removably engaging the axle member, wherein when the hook member engages the axle member: (a) the cover is in the closed position when the axle member is in the first rear position, (b) the axle biasing member in urging the axle member to the first position urges the cover to the closed position, and (c) movement of the cover from the closed position to the open position moves the axle member from the first rear position to the second forward position against the bias of the axle biasing member, the hook member being engageable and disengageable from the axle member for coupling and uncoupling of the cover relative to the housing when the axle member is in the second front position and the cover member is proximate the closed position.

2. A fluid dispenser as claimed in claim 1 wherein the hook member having a shank portion extending rearwardly to a bight forming portion which curves forwardly to a distal forward end defining a blind slotway closed at a rearmost bight end and open via an entranceway forward of the bight end between the shank portion and the distal forward end.

3. A fluid dispenser as claimed in claim 2 wherein the axle member extends side to side across the housing, the housing has a forward opening providing access to the interior of the housing, the cover covers the forward opening of the housing in the closed position.

4. A fluid dispenser as claimed in claim 3 wherein the axle member extends side to side across the housing, in a horizontal direction.

5. A fluid dispenser as claimed in claim 3 wherein the cover in moving between the closed position and the open position assuming an intermediate position between the closed position and the open position, the cover in moving between the closed potion and the intermediate position moving forwardly relative the housing.
the cover in moving between the intermediate position and the open position pivoting about the axle member relative the housing.

6. A fluid dispenser as claimed in claim 5 including rotation stop surfaces carried on the housing to engage the cover and prevent pivoting of the cover about the axle member when the axle member is received in the bight end of the blind slotway of the hook member and the cover is between the closed position and the intermediate position.

7. A fluid dispenser as claimed in claim 6 wherein the axle member extends side to side across the housing, in a horizontal direction.

8. A fluid dispenser as claimed in claim 7 wherein the cover the cover in moving from the intermediate position to the open position and pivoting about the axle member moves upwardly relative the housing to provide access to the interior below the cover.

9. A fluid dispenser as claimed in claim 8 the axle member extends horizontally through the hook member with the shank portion below the axle member, with the distal hook end above the axle member and with the entranceway to the blind slotway on an upper side of the shank portion and opening outwardly and upwardly from the blind slotway.

10. A fluid dispenser as claimed in claim 5 wherein the cover has a pair of rearwardly extending hook arms spaced side-to-side on the cover and with each hook arm carrying one said hook member at a rear end thereof, each said hook member engaging the axle member at side-to-side spaced locations.

11. A fluid dispenser as claimed in claim 5 including a pump mechanism within the interior of the housing having a dispensing nozzle which extends forwardly beyond the housing for dispensing downwardly the cover comprising a shroud overlying the nozzle and at least partially protecting the with the nozzle from engagement by a user when the cover is in the closed position.

12. A fluid dispenser as claimed in claim 11 wherein the pump mechanism is coupled to the housing for removal when the cover is in the open position, and prevented from removal when the cover is in the closed position.

13. A fluid dispenser as claimed in claim 12 including a fluid reservoir within the interior of the housing from which fluid is to be dispensed, the reservoir coupled to the pump mechanism with the pump mechanism and reservoir being removable as a unit from the interior for replacement when the cover is in the open position.

the cover comprising a shroud overlying the nozzle and at least partially protecting the with the nozzle from engagement by a user when the cover is in the closed position.
the cover extends forwardly

14. A fluid dispenser as claimed in claim 1 including a cover latch member releasably secured to the housing, the cover latch when secured to the housing with the cover in the closed position preventing movement of the cover from the closed position toward the open position.

15. A fluid dispenser as claimed in claim 14 wherein the cover latch member provides a removable cover plate which when secured to the housing prevents access to the interior of the housing.

16. A fluid dispenser as claimed in claim 15 wherein the housing carries in the interior a support plate for supporting a pump mechanism, the cover latch member when secured to the housing engages with stop surface on a forward portion of the support plate which stop surface prevents forward movement of the cover latch member.

17. A fluid dispenser having:
a housing;
a cover coupled to the housing for movement between a closed position in which the dispenser is operative for dispensing fluid and an open position in which access is provided to an interior of the housing, the cover and the housing coupled together by a releasable connection mechanism including an axle member disposed about an longitudinal axis carried by a first member selected from the cover and the housing, and a hook member carried by a second member which selected from the cover and the housing but is not the first member, the one of the axle member and hook member which is carried by the housing being movable relative the housing in a direction normal to the axis between a first rear position and a second forward position, a biasing member urging the one of the axle member and hook member which is carried by the housing to assume the first rear position, the one of the axle member and hook member which is carried by the housing being movable from the first rear position to the second forward position against the bias of the biasing member, the hook member removably engaging the axle member, wherein when the hook member engages the one of the axle member and hook member which is carried by the housing: (a) the cover is in the closed position when the one of the axle member and hook member which is carried by the housing is in the first rear position, (b) the axle biasing member in urging the one of the axle member and hook member which is carried by the housing to the first position urges the cover to the closed position, and (c) movement of the cover from the closed position to the open position moves the one of the axle member and hook member which is carried by the housing from the first rear position to the second forward position against the bias of the axle biasing member, the hook member being engageable and disengageable from the axle member for coupling and uncoupling of the cover relative to the housing when the one of the axle member and hook member which is carried by the housing is in the second front position and the cover member is proximate the closed position.

18. A fluid dispenser as claimed in claim 17 wherein the cover is the first member and the housing is the second member, the hook member having a shank portion extending forwardly to a bight forming portion which curves rearwardly to a distal front end defining a blind slotway closed at a forwardmost bight end and open via an entranceway rearward of the bight.

19. A fluid dispenser as claimed in claim 18, the axle member extends horizontally through the hook member with with the distal hook end below the axle member and with the entranceway to the blind slotway on a lower side of the shank portion and opening outwardly and downwardly from the blind slotway.