Handheld spray device

Abstract

A handheld spray device has a flexible bellow coupled to a base to thereby retain liquid therein. The bellow has a bulbous section adjacent the base, narrows away from the base to terminal section opposite the base and has a side notch formed at one side of the bellow between the bulbous section and the terminal section. The base also has a nozzle therethrough such that when the bellow is squeezed in use, the liquid is forced via the nozzle.

Claims

1. A handheld spray device comprising a flexible bellow coupled to a base to thereby retain liquid therein, the bellow comprising a bulbous section adjacent the base, the bellow narrowing away from the base to terminal section opposite the base and having a side notch formed at one side of the bellow between the bulbous section and the terminal section, wherein the base comprises a nozzle therethrough such that when the bellow is squeezed in use, the liquid is forced via the nozzle, and wherein the device comprises an interior liquid inlet adjacent the base and an interior air inlet away from the base, the interior liquid inlet leading to an exterior liquid outlet and the interior air inlet leading to an exterior air outlet and wherein the exterior air outlet directs air towards liquid emanating from the exterior liquid outlet in use.

2. A device as claimed in claim 1, wherein the base comprises an outer section cooperating with an inner section to clamp a rim of the bellow therebetween.

3. A device as claimed in claim 2, wherein the outer section is disengageable from the inner section in use for refilling of the bellow.

4. A device as claimed in claim 1, wherein the bellow comprises silicon.

5. A device as claimed in claim 1, wherein the base is rigid.

6. A device as claimed in claim 5, wherein the base comprises ABS.

7. A device as claimed in claim 1, wherein the device comprises a delivery tube extending perpendicularly from the base defining the interior air inlet at a distal end thereof opposite the base.

8. A device as claimed in claim 7, wherein the delivery tube extends past the notch.

9. A device comprising a flexible bellow coupled to a base to thereby retain liquid therein, the bellow comprising a bulbous section adjacent the base, the bellow narrowing away from the base to terminal section opposite the base and having a side notch formed at one side of the bellow between the bulbous section and the terminal section, wherein the base comprises a nozzle therethrough such that when the bellow is squeezed in use, the liquid is forced via the nozzle and, wherein the device comprises a delivery tube extending perpendicularly from the base defining a liquid air inlet at a proximal end thereof adjacent the base.

10. A device comprising a flexible bellow coupled to a base to thereby retain liquid therein, the bellow comprising a bulbous section adjacent the base, the bellow narrowing away from the base to terminal section opposite the base and having a side notch formed at one side of the bellow between the bulbous section and the terminal section, wherein the base comprises a nozzle therethrough such that when the bellow is squeezed in use, the liquid is forced via the nozzle, and wherein the device further comprises a pump comprising an internal lever acting on an internal fulcrum to depress a plunger within a chamber to force liquid via the outlet.

11. A device as claimed in claim 10, further comprising a brace pressing against an interior surface of the bellow in opposition to the internal lever.

12. A device as claimed in claim 10, wherein the internal lever locates adjacent and interior surface of the bellow at the notch.

13. A device as claimed in claim 9, wherein the delivery tube comprises a duckbill valve orientated in towards the delivery tube at the base.

14. A device as claimed in claim 9, wherein the delivery tube comprises a duckbill valve orientated in towards the delivery tube away from the base.

15. A device as claimed in claim 9, wherein the delivery tube comprises a duckbill valve orientated out from the delivery tube away from the base.

16. A device as claimed in claim 2, further comprising a lid rotatably engaging the outer section and wherein the lid defines an aperture which selectively collocates adjacent the nozzle.

17. A device as claimed in claim 16, wherein the aperture selectively collocates away from the nozzle.

18. A device as claimed in claim 16, wherein the outer section comprises an undersurface protrusion comprising the nozzle therethrough and wherein the lid defines a stopper which selectively locates adjacent the nozzle.

19. A device as claimed in claim 18, wherein the undersurface protrusion comprises a planar face and wherein the stopper defines a planar face which abuts against the planar face of the undersurface protrusion in a flush manner and wherein the stopper comprises a lead up ramp to the inner face thereof.

20. A device as claimed in claim 9, wherein the device comprises an interior liquid inlet adjacent the base and an interior air inlet away from the base, the interior liquid inlet leading to an exterior liquid outlet and the interior air inlet leading to an exterior air outlet and wherein the exterior air outlet directs air towards liquid emanating from the exterior liquid outlet in use.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the disclosure will now be described, by way of example only, with reference to the accompanying drawings in which:

(2) FIG. 1 shows a top perspective view of a handheld spray device in accordance with an embodiment;

(3) FIG. 2 shows a side elevation cross-sectional view of the device in accordance with an embodiment;

(4) FIG. 3 shows a side elevation cross-sectional view of the device in accordance with an embodiment;

(5) FIG. 4 shows a side elevation cross-sectional view of the device in accordance with an embodiment;

(6) FIG. 5 shows a side elevation cross-sectional view of the device in accordance with an embodiment;

(7) FIG. 6 shows a side elevation cross-sectional view of the device in accordance with an embodiment;

(8) FIG. 7 shows perspective views of an outer section and covering lid of the base in accordance with an embodiment;

(9) FIG. 8 shows cross-sectional views of the outer section and the covering lid; and

(10) FIG. 9 illustrates the engagement between the outer section and the covering lid.

DESCRIPTION OF EMBODIMENTS

(11) FIG. 1 shows a handheld spray device comprising a flexible bellow 101 coupled to a base 103 so as to retain liquid such as water therein. The base 103 preferably has a circular cross-section and may comprise a planar undersurface for standing upright on a surface.

(12) The bellow 101 may be made from a flexibly watertight material such as silicon or other soft plastics or urethane-based resins. The base 103 is preferably rigid such is made of ABS or other suitable hard plastic.

(13) With reference to FIG. 2, the bellow 101 may comprise a bulbous section 104 adjacent the base 103 narrowing away from the base 103 to a terminal section 109 opposite the base 103. The bellow 101 may define a side notch 106 at one side of the bellow 101 between the bulbous section 104 and the terminal section 109.

(14) The base 103 may comprise an outer section 113 which engages an inner section 131 to clamp a rim 115 of the bellow 101 therebetween. The outer section 113 may be unscrewed from the inner section 113 to refill the bellow 101.

(15) The base 103 may further comprise a lid 114 which may rotatably coaxially engage the outer section 113 in the manner described in further detail below.

(16) In embodiments shown in FIG. 2, the base 103 may have a liquid inlet 112 adjacent the base 103 and an air inlet 108 away from the base. The air inlet 108 may be formed at a distal end of a delivery tube 107. As such, when held in the orientation shown in FIG. 2, the liquid contents therein submerges the liquid inlet 112 while leaving the air inlet 108 exposed to air therein.

(17) The liquid inlet 112 leads to a nozzle 111. As such, when the bellow 101 is squeezed and the contents therein pressurised, liquid is forced via liquid inlet 112 out from the nozzle 111 at high velocity.

(18) Simultaneously, air is forced via the air inlet 108, down the delivery tube 108 and via an exterior air outlet 110. As can be seen in FIG. 10, the exterior air outlet 110 may be directed to intersect the path of the nozzle 111 so as to disrupt the laminar flow of liquid therefrom thereby creating a disrupted flow or misting effect.

(19) FIG. 3 shows a variation of the embodiment of FIG. 2 wherein the device 100 comprises a further delivery tube 116 interfacing the liquid inlet 112. The further delivery tube 116 may comprise a liquid inlet 117 towards the base 103 which is similarly submerged within liquid contents when the device 100 is held in the orientation of FIG. 3.

(20) FIG. 4 shows an alternative embodiment wherein the device 100 comprises a pump 118 comprising a lever 119 acting against a fulcrum 120 to force a plunger 121 into a chamber to pressurise liquid contents therein which in turn flows via the nozzle 111.

(21) In embodiments shown, the lever 119 locates adjacent the notch 106 such that depressing the bellow 101 at the notch thereby depresses the lever 119. The lever 119 may comprise a return mechanism such as a coil spring, compression spring or the like returning the lever 119 against the notch 106.

(22) The pump 118 may comprise a liquid inlet tube 122.

(23) The pump 118 may comprise a counter brace 123 acting in opposition to the lever 119 against an interior surface of the bellow 101. As such, for example, for pumping the pump 118, a thumb 106 may be engaged within the notch in opposition against forefingers holding an opposite side of the bellow 101.

(24) FIG. 5 shows an embodiment of the device 100 devoid of the exterior air outlet 110. In this embodiment, squeezing of the bellow 101 forces pressurised water via the nozzle 111. In this embodiment, the device 100 may comprise the delivery tube 116 which may comprise the liquid inlet 117 towards the base 103 which is thereby submerged within liquid contents allowing liquid to flow into the delivery tube 116 for expulsion via the nozzle 111.

(25) FIG. 6 shows a variation of the embodiment of FIG. 5 wherein the delivery tube 116 comprises a plurality of duckbill valves.

(26) In accordance with this embodiment, the delivery tube 116 comprises a liquid inlet duckbill valve 126 towards the base 106 to allow liquid contents to enter the delivery tube 116 but not escape therefrom.

(27) The delivery tube 116 may comprise an air inlet duckbill valve 125 allowing air entrapped at an upper region of the bellow 101 to into the delivery tube 116.

(28) Furthermore, the delivery tube 116 may comprise an air outlet duckbill valve 124, allowing air to escape into the bellow 101.

(29) FIGS. 7-9 illustrates embodiments wherein the lid 114 rotates with respect to the outer section 113 so as to alternatively bring an aperture 108 or stopper 130 in alignment with the nozzle 111.

(30) As is shown in FIG. 7, the undersurface of the outer section 113 may comprise a protrusion 127 defining the nozzle 111 concentrically therethrough.

(31) The lid 114 may comprise a rim 113 engaging the outer section 113 in a rotatable manner. The lid 114 may comprise a rail 132 to control the extent of rotation between the lid 114 and the outer section 113.

(32) As such, at one extent of rotation, the aperture 128 collocates with the protrusion 127, thereby allowing liquid to escape via the nozzle 111.

(33) However, at an opposite extent of rotation, the stopper 113 collocates against the protrusion 127. In the embodiment shown, both the protrusion 127 and the stopper 130 may comprise planar faces for face-to-face sealing as is illustrated in FIG. 9.

(34) The stopper 130 may comprise a lead up a ramp 129 to guide the protrusion 127 to the planar face of the stopper 130.

(35) The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that specific details are not required in order to practise the invention. Thus, the foregoing descriptions of specific embodiments of the invention are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed as obviously many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the following claims and their equivalents define the scope of the invention.