fig1 shows an application device 10 that comprises a container in the form of an open top flexible squeeze bottle 12 , and a plastics dip cup 14 . the dip cup 14 has a generally cylindrical base portion 14 a which threadably engages with the open end of the bottle 12 and an upper , generally frustoconical body portion 14 b which is inclined at a small angle with respect to the base portion 14 a . the dip cup 14 also has an open first end 16 capable of receiving an animal teat , and a hook 17 which may be used when the device is in use to hang the application device up to allow the operator to have both hands free to perform another task . the alternative application device 18 shown in fig2 includes a manually operable wand - like handle 20 , one end of which is supplied with a source 22 of liquid via a flexible hose 24 . the flexible hose 24 is connected to the handle 20 using a hose connector 28 . the other end of the handle 20 is connected to a dip cup 26 , which is similar to the dip cup 14 shown in fig1 . the dip cup 26 comprises an inner cup portion 30 , which has an outer casing 32 . the inner cup portion 30 has an open first end 30 a that extends along a body 30 b to a closed second end 30 c . a full circumferential extension of the body 30 b forms a full annular extension 30 d of the inner cup portion 30 adjacent the open first end 30 a . the open first end 30 a is capable of receiving an animal teat . a fluid flow path 34 is formed within the wand - like handle 20 and extends from the connection 28 with the flexible hose 24 along internal channels 34 a , 34 b and 34 c within handle 20 to an aperture 37 in the base of the outer casing 32 . the handle 20 also has a manually operable lever 36 that is capable of being pressed down to open a valve 38 . a hook 39 is provided on the handle to enable the application device to be hung up . the inner cup portion 30 as shown in fig2 has an over flow chamber 40 formed by an elongate channel 42 that extends part way along the body 30 b of the inner cup portion 30 from its open first end 30 a towards its closed second end 30 c . the base 44 of the elongate channel 42 is inclined at a slight angle to the plane of the open first end 30 a . fig2 a shows the dip cup 26 of fig2 in closer detail by showing the outer casing 32 cut away . fig2 a reveals that a tube 35 , fits within the aperture 37 in the base of the outer casing 32 to form a flow path that connects the outlet nozzle 31 to the fluid flow path 34 . in use , the treatment liquid under pressure ( either using a pump or compressed air ) is introduced to the cup portion 30 by manually pressing down the lever 36 to open valve 38 and thereby to allow the treatment liquid to flow from the source 22 along the flexible hose 24 , along the internal channels 34 a , 34 b and 34 c within the handle 20 , through the tube 35 , through outlet nozzle 31 and into the inner cup portion 30 . when sufficient treatment liquid is in the cup portion , the operator depresses the lever 36 to cause the valve 38 to close and thereby shut off the supply of liquid . the operator may then choose to hang up the filled application device , thereby causing the cup portion 30 to be oriented on its side . the presence of the overflow chamber 40 in the cup portion 30 to contain the liquid within the cup portion 30 allows this to be achieved without the liquid within the cup portion 30 from spilling out . fig3 shows a cut away perspective view of the inner cup portion 30 of fig2 . two outlet nozzles 46 , 48 are located on either side of the elongate channel 42 . fig4 shows a cross - sectional view of the inner cup portion 30 of fig2 with liquid 50 being present at a level 50 a within the inner cup portion 30 that is suitable for dipping an animal teat . the level 50 a is just below the base 44 of the elongate channel 42 . fig5 shows a cross - sectional view of the inner cup portion 30 of fig2 with an animal teat 52 being dipped into the liquid 50 . a portion of the liquid 50 is shown as being displaced into the elongate channel 42 to level 50 b . fig6 shows a cross - sectional view of the inner cup portion 30 of fig3 oriented on its side . such an orientation will occur when the application device 10 , 18 is hung up . a portion of liquid 50 , greater than that shown in fig5 is shown as being displaced into the elongate channel 42 to level 50 c . referring to fig7 and 8 , an inner cup portion 52 having two elongate channels 54 , 56 is shown . as with the elongate channel 42 shown in fig2 , the elongate channels 54 , 56 extend part way along the body 52 b of the inner cup portion 52 from its open first end 52 a towards its closed second end 52 c . also as with the elongate channel 42 , channels 54 , 56 each have a base 58 , 60 respectively , that is inclined at a slight angle to the plane of the open first end 52 a . the purpose of having two elongate channels 54 and 56 is to allow the same dip cup to be used in the device such as that shown in fig2 , no matter whether it is hung up by a hook 39 , or allowed to dangle down from hose 24 . it will be appreciated that the overflow channel will need to be on opposite sides of the dip cup depending upon the chosen hanging orientation . fig9 shows an inner cup portion 62 that has a reservoir chamber in the form of an elongate channel 64 that inwardly tapers to a point 66 as it extends along the body 62 b of the inner cup portion 62 . fig1 shows an inner cup portion 68 that has a reservoir chamber in the form of a generally horizontally extending indentation 70 on the inside of the cup portion 68 .
the present invention relates to an application device for treating the teats of milk producing animals with a liquid . the device comprises a dip cup with one or more reservoir chambers formed by a limited circumferential extension of the body of a cup portion of the dip cup to form one or more indentations on the inside of the cup portion .