NZ726592A - An applicator - Google Patents
An applicator Download PDFInfo
- Publication number
- NZ726592A NZ726592A NZ726592A NZ72659215A NZ726592A NZ 726592 A NZ726592 A NZ 726592A NZ 726592 A NZ726592 A NZ 726592A NZ 72659215 A NZ72659215 A NZ 72659215A NZ 726592 A NZ726592 A NZ 726592A
- Authority
- NZ
- New Zealand
- Prior art keywords
- piston
- barrel
- fluid
- applicator
- dosage
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 153
- 230000009471 action Effects 0.000 claims abstract description 7
- 230000037452 priming Effects 0.000 claims abstract description 5
- XUKUURHRXDUEBC-KAYWLYCHSA-N Atorvastatin Chemical compound C=1C=CC=CC=1C1=C(C=2C=CC(F)=CC=2)N(CC[C@@H](O)C[C@@H](O)CC(O)=O)C(C(C)C)=C1C(=O)NC1=CC=CC=C1 XUKUURHRXDUEBC-KAYWLYCHSA-N 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000004540 pour-on Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 241000282898 Sus scrofa Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Disclosed is an applicator. The applicator has at least one barrel; a piston moveable within the at least one barrel between a variable first position and a second position. In use, movement of the piston towards the first position can draw a first fluid into the barrel, and movement of the piston towards the second position can force the first fluid out of the barrel. There is at least one fluid inlet valve to allow the fluid to flow into the at least one barrel at least under action of the piston, and at least one fluid outlet valve to allow the first fluid to flow out of the at least one barrel at least under action of the piston. There is also biasing means to bias the piston toward the first position and a dosage control part to abut an abutment portion which in turn defines the first position of the piston and therefore the dosage of the first fluid. There is also a piston actuating means operable to move the piston towards the second position to dispense the first fluid from the applicator. Such that in use a user may set the dosage of the applicator via the dosage control part, and deliver a dosage of the first fluid by the piston actuating means. The invention targets problems with priming and/or undue length of applicator and/or inadequate dosage control. A dosage control part which slides linearly is provided to lock in at any one of a plurality of notches to correspond to a respective dosage mark.
Description
AN APPLICATOR
The present invention relates to applicators for fluids, and in particular, but not exclusively, to
applicators for use in applying remedies to s.
Background
Animal remedies for sheep, cattle, swine and the like are applied by a number of methods
including topical or “pour-on” application, oral application, injection and nasal infusion. Each of
these is typically dispensed from a l grip” style applicator.
Typically such applicators have a piston or plunger which can be reciprocated within a barrel by
squeezing and releasing a first handle relative to a second handle. The liquid to be dispensed
is drawn into the barrel through an inlet via a one way inlet valve when the plunger is withdrawn
inside the barrel, and is dispensed through a nozzle (or a needle) via an outlet valve when the
plunger is extended towards the outlet valve. Such an applicator is described in the applicant’s
New Zealand patent No. 521084.
In some cases the treatment given to the animal comprises two different liquids. The liquids
may be mixed together within the applicator, or may be applied separately but at the same time.
It may be desirable to control the dose of each liquid independently of the dose of the other.
Some applicators of the prior art comprise two parallel fluid flow systems which are operated by
a single handle or trigger. In order to “prime” the applicator, the handle or trigger is ed
repeatedly until each of the el systems is filled with a respective liquid. However, if one of
the two systems fills sooner than the other (for example if the length of the ts feeding the
barrels are of different lengths, or if the parallel systems are set to express different , then
wastage of at least one of the liquids can occur, as the priming action must be repeated until the
last system to fill is ready for use. In many cases the liquids in on may be expensive, and
so this waste may incur a significant expense for the user.
Many applicators of the prior art are provided with mechanisms for controlling the dose
sed by the ator. NZ521084 describes a mechanism comprising a cylindrical
dosage l part which is provided with a plurality of stopping ribs, each of a different length.
Rotation of the dosage control part allows ion of which of the stopping ribs is engaged by
a rib provided on the plunger, and therefor allows adjustment of the m stroke of the
plunger.
Notably, the dosage control part encircles the plunger, and so the r must be of adequate
length to allow the plunger to e its full stroke (dependent on the g of the dosage
control part) before the mechanism which actuates the plunger comes into contact with the
dosage control part.
Often a user will need to treat a large number of animals. Accordingly, it is important that the
applicator be as compact as possible so as to be easy to use and to avoid user fatigue.
Applicators may also require periodic servicing of various inlet and outlet valves in order to stay
in good g condition. It is desirable for this servicing to be achievable as quickly and
simply as possible. However, many applicators of the prior art have inlet and outlet valves
located at a ity of locations, requiring significant disassembly of the applicator for the
valves to be serviced.
The reference to any prior art in the specification is not, and should not be taken as, an
acknowledgement or any form of suggestion that the prior art forms part of the common general
dge in any country.
Object of the Invention
It is an object of a preferred embodiment of the ion to provide an applicator which will
overcome or ameliorate at least one problem with such applicators at present, or which will at
least provide a useful choice.
Brief Summary of the Invention
In a first aspect the present invention consists in an applicator sing:
at least one barrel;
a piston moveable within the at least one barrel between a variable first position and a
second position, wherein, in use, movement of the piston towards the first position can draw a
first fluid into the barrel, and movement of the piston towards the second on can force the
first fluid out of the barrel;
at least one fluid inlet valve to allow the fluid to flow into the at least one barrel at least
under action of the piston, and at least one fluid outlet valve to allow the first fluid to flow out of
the at least one barrel at least under action of the piston;
biasing means to bias the piston toward the first position;
a dosage control part that slides linearly on a longitudinal axis of the at least one barrel,
and can lock in any one of a plurality of notches that each correspond to a dosage mark to abut
an abutment portion which in turn defines the first position of the piston and therefore the
dosage of the first fluid; and
piston actuating means operable to move the piston towards the second position to
dispense the first fluid from the applicator,
Wherein a user may set the dosage of the applicator via the dosage control part, and r
a dosage of the first fluid by the piston actuating means.
Preferably the abutment portion is on, or connected to, the piston.
Preferably the piston comprises a piston head and a piston rod connected to or integral with
the piston head, wherein the piston rod comprises the abutment portion of the piston.
Preferably the dosage control part is slideable ve to the at least one barrel.
Preferably the dosage control part is ble along an axis which is ntially parallel to
a longitudinal axis of the barrel.
Preferably the dosage control part is ally accessible and slidable by a user.
Preferably the dosage control part is lockable in a selected position.
Preferably the piston comprises a lever portion which is accessible from an exterior of the
ator.
Preferably the lever portion allows a user to move the piston independently of the piston
actuating means.
Preferably the first fluid enters the at least one barrel at or adjacent a first end of the at least
one barrel, and the first fluid exits the at least one barrel at or adjacent the first end.
Preferably the at least one fluid inlet valve is adjacent one end of the at least one barrel, and
the at least one fluid outlet valve is adjacent the same end of the at least one barrel.
Preferably the at least one fluid inlet valve and the at least one fluid outlet valve are nt
the first end.
Preferably there is an outlet, wherein the outlet is at a second end of the at least one barrel,
opposite to the first end.
Preferably the applicator comprises,
a second barrel,
a second piston moveable between a first position and a second position within the
second , wherein, in use, movement of the second piston towards the first position can
draw a second fluid into the second barrel, and movement of the piston towards the second
position can forces the second fluid out of the second barrel,
at least one second fluid inlet to allow the second fluid to flow into the second barrel, and
second biasing means to bias the second piston toward the first position,
wherein the piston actuating means is operable to move both the first and second pistons
towards the second position to dispense the first fluid and the second fluid from the
applicator.
Preferably there is at least one second outlet valve to allow the second fluid to flow out of
the second .
Preferably the at least one fluid outlet valve may be in fluid communication with the second
barrel also.
Preferably there is a second dosage l part to abut a second abutment portion which in
turn defines the first on of the second piston.
Preferably the second piston comprises a second piston head and a second piston rod
connected to or integral with the second piston head, wherein the second piston rod
comprises the second abutment portion of the second piston.
Preferably the second dosage control part is slideable along an axis which is substantially
parallel to a longitudinal axis of the first and second s.
Preferably there is a second lever portion which allows a user to move the second piston
independently of the piston actuating means, and independently of the first piston.
ably the first fluid and the second fluid may be the same or different, and may be
delivered in the same or different dosages.
In a second aspect the present invention consists in an applicator comprising:
a first barrel and a second barrel;
the first barrel having a first piston and the second barrel have a second piston, the
first piston being moveable between a variable first position and a second on
within the first barrel, and the second piston being moveable between a variable first
position and a second position within the second barrel,
wherein, in use, movement of the pistons towards their respective first
positions can draw respective fluids into each of the barrels, and movement
of the pistons s their tive second positions can force their
respective fluids out of each of the barrels,
for each barrel, at least one fluid inlet valve to allow the respective fluid to flow into
the respective barrel when the respective piston moves towards the respective first
position;
at least one fluid outlet valve operable to allow the fluids to flow out of the barrels
when the respective pistons move towards their tive second positions;
biasing means to bias the first piston and second piston toward their respective first
positions;
a first dosage control part for the first barrel to abut a first abutment portion of the
first piston to thereby define the first position of the first piston, a second dosage
control part for the second barrel to abut a second nt portion of the second
piston to thereby define the first on of the second piston;
piston actuating means le to move the first piston and the second piston
towards their respective second positions to dispense the respective fluids from the
applicator,
Wherein a user may set the dosage of each of the first barrel and the
second barrel via the respective first dosage control part and second
dosage control part, and deliver a dosage of the first fluid and the second
fluid by the piston actuating means.
Preferably there is a biasing means for each of the first piston and the second piston.
Preferably at least one fluid outlet valve is provided for each of the first barrel and the
second barrel.
ably the at least one fluid outlet valve may operate as a common outlet valve for both
the first barrel and the second barrel.
Preferably each dosage control part is slideable relative to the barrel.
Preferably the first dosage control part, and the second dosage control part are slideable
along an axis which is substantially parallel to a longitudinal axis of the first barrel and the
second barrel.
Preferably each of the first and second dosage control parts are le in their selected
position.
Preferably the first piston comprises a first piston rod and a first piston head, wherein a first
portion of the first piston rod is accessible from an exterior of the applicator, and second
piston comprises a second piston rod and a second piston head, wherein a second portion
of the second piston rod is also accessible from an or of the ator.
Preferably each piston rod comprises a lever portion which allows a user to move the
respective piston independently of the piston actuating means and independently of the
other piston.
Preferably the first barrel and the second barrel each have a substantially ‘D’ shaped crosssection.
Preferably the first barrel and second barrel are back to back on the tive ht walls
of their substantially “D” shaped cross section.
In a third aspect the present invention consists in an applicator comprising
a barrel;
a piston moveable between a first position and a second position within the ,
wherein, in use, movement of the piston towards the first position draws a fluid into
the barrel, and movement of the piston towards the second position forces fluid out
of the barrel;
at least one fluid inlet valve and at least one fluid outlet valve to allow fluid to flow
into and out of the barrel;
biasing means to bias the piston toward the first position; and
piston actuating means operable to move the piston towards the second position to
dispense a fluid from the applicator; wherein
the at least one fluid inlet valve and at least one fluid outlet valve are
located substantially adjacent each other.
Preferably the at least one fluid inlet valve and at least one fluid outlet valve are provided at
a first end of the applicator, and the applicator has an outlet provided at an opposite second
end of the applicator.
Preferably the applicator comprises a manifold n in fluid ication with one end
of the barrel, wherein the manifold n is in fluid communication with the at least one
fluid inlet valve and at least one fluid outlet valve.
In a fourth aspect the present invention consists in a method of using an applicator,
comprising or including the steps of,
Fluidly connecting supply of a first fluid to a manifold of the applicator,
Adjusting a dosage of a first piston with a first barrel of the applicator using a first
dosage l part, where the first dosage control part is slidingly le along a
major axis of the first , the first dosage control part abutting a first abutment
portion on the first piston which in turn varies a first on of the first piston and
therefore the dosage of the first fluid,
Priming the first barrel using a first lever portion,
Forcing a first fluid from the first barrel by moving the first piston from the first
position to a second position within the barrel, by use of a piston actuating means
which, the first fluid moving from the first barrel via at least one fluid outlet valve,
Drawing the first fluid from the supply into the first barrel by the first piston moving
from the second position back to the first position, the first fluid moving in via a first
fluid inlet valve, the movement from the first position to the second position being
biased,
n a user may set the dosage of the applicator via the first dosage control part,
and deliver a dosage of the first fluid by the piston actuating means.
In another aspect the present invention consists in an ator substantially as herein
described, with reference to any one of more the accompanying drawings.
In another aspect the present invention consists in an method of using an applicator
substantially as herein described with reference to any one or more of the accompanying
drawings.
Further aspects of the invention, which should be considered in all its novel aspects, will
become apparent from the following description given by way of example of possible
embodiments of the invention.
Brief Description of the Drawings
Figure 1 is a perspective view of an applicator according to one embodiment of the
present invention,
Figure 2 is a side view of the applicator of Figure 1,
Figure 3 is a perspective view of the ator of Figure 1, with the housing and first
handle removed,
Figure 4 is a top view of the applicator of Figure 1, with the housing and first handle
removed,
Figure 5 is a top view of the relative layout of the pistons and dosage l parts of the
applicator of Figure 1,
Figure 6 is a perspective view of the second handle, pistons and dosage control parts of
the applicator of Figure 1, with the second dosage control part shown in lly
exploded form,
Figure 7 shows the relative layout of the second , conduits and valves of the
applicator of Figure 1,
Figure 8 is a partially exploded perspective view of the first dosage control part,
Figure 9 shows a side view of a further embodiment of the present invention, where the
manifold is located at the top rear of the body,
Figure 10 shows the rear view of the embodiment of Figure 9,
Figure 11 shows the plan view of the embodiment of Figure 9,
Figure 12 shows a rear isometric view of the embodiment in Figure 9,
Figure 13 shows an exploded view of the embodiment of Figure 9,
Figure 14 shows the rear end of the exploded view of Figure 13,
Figure 15 shows the middle portion of the exploded view of Figure 13, and
Figure 16 shows the front end of the exploded view of Figure 13.
Brief Description of Preferred Embodiments
Referring first to Figures 1-4, an applicator according to one embodiment of the present
invention is generally nced by arrow 100.
The applicator bed and in the embodiments has two barrels and associated components
to deliver two fluids, or a greater volume of a single fluid from the two barrels. It is to be
understood that a single barrel applicator, though not shown, is also an embodiment of the
present invention. Such a single barrel applicator may be buildable from the dual barrel
applicator shown, for example by disassembly and replacing the barrel, manifold and associated
components with a single barrel. In this way it may be made with the same body, and second
handle, outlet but have a single barrel and piston and adjusters so that where possible common
parts may be used.
Alternatively all, or a majority of, the components may be specific to the single barrel ator.
Also an applicator with more than 2 barrels is an embodiment of the present invention, though
not shown. A person skilled in the art would understand how such an applicator could have
three or more barrels ed equally about the longitudinal centre line, each with its own
piston, valving, adjustment and priming levers.
The applicator 100 comprises a housing 1 which is connected to or integral with a first handle 2,
and has a first end 41 and second end 42. A second handle 3 is pivotally connected at a lower
end to the first handle 2. In use, movement of the second handle 3 relative to the first handle 2,
and thus the body or housing 1 activates the applicator 100, as is described further below, to
deliver fluid(s) from an outlet 40 at the second end 42. The second handle 3 drives a ,
one per barrel 4, to draw fluid into the , and expel it out again. The dosage of the barrel
can be ed using dosage control parts 20, and in the case of two barrels second dosage
l part 21. To prime the barrel, or barrels there is a lever portion 38, and 39 when two
barrels, to fill the barrel(s) with fluid. This is so there is l wastage when there are two or
more barrels.
ing next to Figures 3 and 4 in particular, the applicator 100 has two barrels 4, 5 which are
mounted to or integral with the housing 1 (not shown here). The barrels 4, 5 are preferably
adjacent to and el with each other. In the embodiment shown the barrels 4, 5 have the
same diameter. r, in many embodiments the first barrel 4 will have a different diameter
to the second barrel 5. The barrels 4, 5 shown in Figures 3 and 4 are substantially circular in
section. However, in some embodiments (not shown) the barrels may be substantially “D”
shaped in cross-section, in order to reduce the overall width of the applicator.
As shown in Figures 4 to 6, each barrel 4, 5 is provided with a respective piston 6, 7, the pistons
6, 7 each comprising a head 8, 9 which is connected to or integral with a respective piston rod
, 11. The piston heads 8, 9 are provided with suitable seals 12 (the seal from the first piston
6 is omitted in Figure 5) to seal against an inner wall of the respective barrel 4, 5 to thereby form
a chamber 13, 14. As will be familiar to those skilled in the art, the volume of the chambers 13,
14 varies as the pistons 6, 7 are moved within the barrels 4, 5 between a variable first position
and a second position, the volume being greater when the pistons 6, 7 are in the first position.
This is shown for example in Figure 4, where first piston 6 is ed (explained below) so that
its first position, which is variable, is further into its travel when compared to the second piston 7
which is adjusted (explained below) so that its first position, which is also variable, is less r
into its travel.
Referring next to Figures 4 and 7, le inlet valves 14, 15 and outlet valves 16, 17 are
provided for each barrel 4, 5. The inlet and outlet valves are one-way valves. In the
embodiment shown the inlet and outlet valves are provided at one end of the respective barrels
4, 5, but in other embodiments (not shown) the inlet and outlet valves may be provided in
conduits which are in fluid communication with the barrels 4, 5. In another embodiment (not
shown) the barrels 4, 5 may share a common outlet valve or a plurality of common outlet valves.
Movement of the s 6, 7 towards their respective first positions (to the left when seen from
above in Figures 4 through 7) draws fluid into the respective barrels through the respective inlet
valves 14, 15, and movement of the pistons 6,7 towards the second on (to the right when
seen from above in Figures 4 through 7) forces fluid from the barrels through the outlet valves
16, 17.
Referring back to Figures 4 to 6, each piston 5, 6 is provided with a biasing means, typically a
spring 18, 19 (only one spring shown in Figure 5), to bias the piston 4, 5 s the first
The travel of the piston 4, 5 under the influence of the g means 18, 19 (and therefor the
maximum volume of each chamber) is limited by respective dosage control parts 20, 21. The
dosage control parts 20, 21 thereby define the first position for the s. In the embodiment
shown each dosage control part 20, 21 is an assembly and is provided as an adjustable stop
which is slideably engaged with a respective slotted component 22, 23 which is attached to or
integral with the body 1.
Referring next to Figures 4 to 6, each piston rod 10, 11 has an abutment n 24, 25 which
abuts the respective dosage l part 20, 21. Note that in Figure 5, dosage l part 21 is
shown spaced apart from abutment portion 25 for clarity.
ing next to Figures 6 and 8, in the embodiment shown the dosage control parts 20, 21
se in the embodiment shown an assembly of a dosage control part body 26, 27, each
provided with at least one, and more preferably a pair of moveable locking tabs 28 which
engage mentary notches 29 provided in the sides of the slot of the d component
22, 23 (best seen in Figure 8). The tabs 28 are outwardly biased, using a tab spring 50. This
tab spring (or springs if needed) can act on a suitable part of the dosage control part body, or for
example where there are two locking tabs as shown in Figure 8, may engage on each other to
bias the tabs outwardly (vertically in the case of Figure 8)
The locking tabs 28 can be moved inwardly (described below) to disengage the s 29. The
slotted ent is shown in Figure 8 as having eight notches 29. However, in other preferred
forms as needed the notches 29 may be anywhere along the length of the slotted component
28. This will provide varying levels of adjustment and therefore differing first positions to e
varying dosages as needed. In other form, where there are two locking tabs 28 present, the
notches 29 may be red on either side to provide additional tion to the adjustable
first position to in turn provide a greater variety of doses. In this embodiment each locking tab
may alternatively engage a notch on one side, and then the other locking tab will engage
another notch further along on the other side. Suitable markings may be provided on the
dosage control part and the body, for example an indicator mark on the dosage control part, for
example the button 31, and dosage volume markings (for example in millilitres) on the body, or
vice versa.
The slotted components 22, 23 and locking tabs 28 are in the preferred embodiment made from
a tough resilient material to withstand repeated adjustments and repeated stops and starts of
the respective piston movements. In one form they may be made of metal, preferably noferrous
, such as stainless steel.
Shown in Figure 6 each dosage control part 20, 21 is provided with an exterior button 30, 31
which has a recess 32 on an inward face 33 which is provided with angled sides or ramps 34.
The ramps as shown in Figure 6, taper inwardly from the interior toward the button 30, 31
exterior. This is such that the angled sides 34 of the recess 32 move the tabs 28 inwardly and
therefore out of engagement with the respective notches 29 when the button 30, 31 is moved
ys that is, inward, relative to the body. In an alternative embodiment (not shown) the slot
may not be provided with notches. In this embodiment each dosage control part may be held in
a required position by alternative means, such as friction.
The button is further biased outwardly from the body 1. Present on the interior side of the
dosage control part, and in this embodiment shown the or side of the button 30 and 31, are
ramped ions 51 (shown in Figure 6). These taper inward from the interior side of the
button, towards it exterior. Residing n them is a button spring 52 (seen in Figure 8),
which bears on the ramped extensions 51 to bias the button outwardly.
Referring next to Figures 1, 5, 6 and 7, in use, fluid is expressed from the applicator 100 by
squeezing the first and second s 2, 3 towards each other. This will move the second
handle 3 along the body 1 to actuate the s 6 and 7. As is best seen in Figures 5 and 6,
movement of the second handle 3 causes an engagement portion 35 of the handle (typically
provided at an opposite end of the handle 3 to the pivotal connection with the first handle 2) to
move into engagement with a second abutment portion 36, 37 of each piston 6, 7. Shown in
Figure 5 the abutment portions 36, 37 are at differing location due to the dosage they are
adjusted to.
Depending on the relative settings of the dosage control parts 20, 21, the engagement of the
engagement portion 35 with the second abutment portions 36, 37 therefore may not occur
simultaneously. For example, in the embodiment shown in Figure 5 and 6 the engagement of
the engagement portion 35 with second abutment portion 37 of piston 7 will occur first, and fluid
will begin to be expressed from the barrel 5 associated with piston 7 before any fluid is
expressed from the barrel 4 ated with piston 6. In some ments it may be possible
to adjust the dosage control parts 26, 27 such that substantially no fluid is expressed from the
respective barrel. In this way a dual barrel applicator may be used to express only one fluid, if
As can be seen from Figures 4 and 6, in contrast with the dosage l mechanisms of the
prior art, the engagement portion 35 is able to move past the dosage l parts 20, 21 during
actuation of the pistons 6, 7. This allows the length of the piston rods 10, 11 (and therefore the
entire applicator) to be reduced, as otherwise the piston rods 10, 11 would need to be longer in
order to allow each piston to move over its full stroke.
As best seen in Figure 5, one or both of the piston rods 10, 11 are provided with a lever portion
38, 39 which extends though the slot and is accessible from the exterior of the applicator 100.
This lever portion 38, 39 can be used to actuate the tive piston 6, 7 independently from
the handle 3 or the other piston. This is useful where the applicator 100 must be primed before
use. To prime the applicator 100 the handle 3 may be operated until one of the barrels 4, 5 is
full. The barrels 4, 5 may be arent or translucent to allow the user to see when this has
occurred. When the first barrel to fill has filled, the operator may use the lever portion 38, 39 of
the piston associated with the other barrel to e that piston until the second barrel is full.
This allows the device to be primed with minimum waste.
Referring next to Figures 1, 3 and 7, in preferred embodiments the inlet valves 14, 15 and outlet
valves 16, 17 for each barrel 4, 5 are provided at a first end 41 of the applicator, and an outlet
40 is provided at an opposite second end 42 of the applicator. In preferred embodiments each
barrel 4, 5 has an expanded portion or a manifold portion at one end to allow the inlet and outlet
valves to be provided at the same end of the . Grouping of the inlet and outlet valves
together in this way allows easy access to all of the valves by removing a single cover 43, rather
than requiring more ntial disassembly of the applicator. In preferred embodiments the
outlet valves 16, 17 feed a manifold (not shown) which combines the fluids from the barrels 4, 5
before a single outlet conduit 44 feeds the ed fluid to the outlet 40. If required the
manifold and/or outlet conduit 44 may be provided with suitable vanes or other formations (not
shown) to ensure that the fluids from the barrels 4, 5 are properly mixed together prior to being
expressed through the outlet. In other ments (not shown) the outlet fluids may be
prevented from mixing until reaching the front or first end 42 of the applicator 100 by providing
te outlet ts (a duplication of conduit 42) from each barrel to the outlet 44 – the dual
conduits joining using a “Y” join (not shown) at or near the outlet. This embodiment reduces the
mixed volume of the two products prior to application. Minimal mixed product may be the
preferred practice, depending on the specific products to be combined.
The inlet valves 14, 15 are connected to respective inlet connections 45, 46 by inlet conduits 47,
48. In the embodiment shown the inlet connections are 45, 46 are provided at the base of the
first handle 2. In another embodiment (not shown) the inlet connections 45, 46 may be provided
at the second end 42 of the applicator.
In another embodiment, shown in s 9 through 16 the inlet connections 45, 46 may be an
integral part of a manifold provided nt the barrels at the first end 41. Reference ls
in these Figures, where they are the same, are for the same features.
Again, the applicator 100 comprises a housing 1 which is connected to or integral with a first
handle 2, and has a first end 41 and second end 42. A second handle 3. Shown in the first
position here, is pivotally connected at a lower end to the first handle 2. A manifold 54 contains
the connections 45, 46 to the fluid supply (not shown), and the inlet and outlet valves (not
shown) for the barrel 4, 5. In use, movement of the second handle 3 relative to the first handle
2, and thus the body or housing 1 activates the applicator 100, as is described above, to deliver
fluid(s) from an outlet 40 at the second end 42. The second handle 3 drives a piston, one per
barrel 4, to draw fluid into the barrel, and expel it out again. The dosage of the barrels can be
adjusted using dosage control parts 20, 21. To prime the barrels there is a lever portion 38, and
39, to fill the (s) with fluid. This is so there is l wastage when there are two or more
barrels.
The ld 54 is better shown in Figures 10 h 14. The manifold 54 can be attached in
any re-connectable way, and in the preferred form uses a pair of fasteners 53 as shown in
Figures 10, 13 and 14. Removing the fasteners allows the manifold to be removed from the first
end 41 of the applicator 100, as shown in Figure 14. Removing the ld 54 allows access
to the inlet valves 14, 15 (in this embodiment they are contained as part of the barrel 4,5
assembly), outlet valves 16, 17 and their respective seals 54. The mixing manifold 57 in this
case is shown immediately downstream of the outlet valves 16, 17 and connects to the outlet
conduit 44. Once the manifold 54 is removed, the barrel assembly 4, 5 can be extracted from
the first end.
Likewise a g front 55, shown in Figures 13 and 16 can be removed (again here with
fasteners) from the body 1. This, in turn, allows for extraction of the piston rods 10, 11 and their
pistons, seals, springs and abutment portions. Likewise the dosage l parts, and second
handle 3 can be d. In this way the entire applicator 100 can easily be assembled with
minimal separate parts, to allow cleaning, removing of blockages and repair or replacement.
The applicator shown in the Figures and described above is configured as an injector.
However, it will be appreciated that other embodiments may be adapted for many other uses,
including “pour-on” ators, oral applicators, or nasal on applicators.
In some embodiments (not shown) the applicator may be configured as a “bottle mount” style
injector, with a bottle mount fitting provided at the first end of the applicator. In this embodiment
the (or each) inlet valve is provided adjacent the first end of the barrel. As is typical with bottle
mount injectors, a short conduit portion may connect the inlet valve with an aperture in a side
wall of the barrel.
While the invention has been particularly described with reference to a dual barrel applicator, in
other embodiments the invention may be configured as a single barrel applicator, or as an
applicator with more than two barrels (for example three barrels).
Throughout the claims, the words “comprise”, “comprising”, and the like, are to be construed in
an inclusive sense as opposed to an ive or exhaustive sense, that is to say, in the sense
of “including, but not limited to”.
Where in the foregoing description, reference has been made to specific components or
integers of the invention having known equivalents, then such equivalents are herein
incorporated as if individually set forth.
gh this invention has been described by way of example and with reference to possible
embodiments f, it is to be understood that modifications or improvements may be made
thereto without departing from the spirit or scope of the invention.
Claims (33)
1. An applicator comprising: 5 - at least one barrel; - a piston moveable within the at least one barrel between a variable first position and a second on, n, in use, movement of the piston towards the first position can draw a first fluid into the barrel, and movement of the piston towards the second position can force the first fluid out of the barrel; 10 - at least one fluid inlet valve to allow the fluid to flow into the at least one barrel at least under action of the piston, and at least one fluid outlet valve to allow the first fluid to flow out of the at least one barrel at least under action of the piston; - g means to bias the piston toward the first position; - a dosage control part that slides linearly on a longitudinal axis of the at least one barrel, 15 and can lock in any one of a plurality of notches that each correspond to a dosage mark to abut an abutment portion which in turn defines the variable first position of the piston and therefore a dosage of the first fluid; and - piston actuating means operable to move the piston towards the second position to dispense the first fluid from the applicator, 20 Wherein a user may set the dosage of the applicator via the dosage control part, and deliver a dosage of the first fluid by the piston actuating means.
2. The applicator of claim 1 wherein the abutment portion is on, or connected to, the piston. 25
3. The applicator of either claim 1 or 2 wherein the piston comprises a piston head and a piston rod ted to or integral with the piston head, wherein the piston rod comprises the abutment portion of the piston. 30
4. The applicator of any one of claims 1 or 3 wherein the dosage control part is externally accessible and slidable by a user.
5. The applicator of any one of claims 1 to 4 wherein the piston comprises a lever portion 35 which is accessible from an or of the applicator.
6. The applicator of claim 5 wherein the lever n allows a user to move the piston independently of the piston actuating means.
7. The applicator of any one of claims 1 to 6 wherein the first fluid enters the at least one barrel at or nt a first end of the at least one barrel, and the first fluid exits the at least one barrel at or nt the first end.
8. The applicator of claim 7 wherein the at least one fluid inlet valve is adjacent one end of the at least one barrel, and the at least one fluid outlet valve is adjacent the same end of the at least one barrel. 10
9. The ator of either claim 10 or claim 11 wherein the at least one fluid inlet valve and the at least one fluid outlet valve are adjacent the first end.
10. The applicator of any one of claims 7 to 8 comprising an outlet, n the outlet is at a second end of the at least one barrel, opposite to the first end.
11. The applicator of any one of claims 1 to 10 comprising, - a second barrel, - a second piston moveable between a first position and a second position within the second barrel, wherein, in use, movement of the second piston towards the first 20 on can draw a second fluid into the second barrel, and movement of the piston towards the second position can forces the second fluid out of the second barrel, - at least one second fluid inlet to allow the second fluid to flow into the second barrel, - second biasing means to bias the second piston toward the first position, 25 wherein the piston actuating means is operable to move both the first and second pistons towards the second position to dispense the first fluid and the second fluid from the applicator.
12. The applicator of claim 11 comprising at least one second outlet valve to allow the 30 second fluid to flow out of the second barrel.
13. The applicator of claim 11 wherein the at least one fluid outlet valve may be in fluid communication with the second barrel also. 35
14. The applicator of any one of claims 1 to 13 comprising a second dosage control part to abut a second abutment portion which in turn defines the first position of the second piston.
15. The applicator of claim 14 wherein the second piston comprises a second piston head and a second piston rod connected to or integral with the second piston head, wherein the second piston rod comprises the second abutment portion of the second piston. 5
16. The applicator of claims 14 or 15 wherein the second dosage control part is slideable along an axis which is substantially parallel to a longitudinal axis of the first and second barrels.
17. The ator of any one of claims 11 to 16 comprising a second lever portion which 10 allows a user to move the second piston independently of the piston actuating means, and independently of the first piston.
18. The applicator of claim 11 to 18 wherein the first fluid and the second fluid may be the same or different, and may be delivered in the same or different s.
19. An applicator comprising: - a first barrel and a second barrel; - the first barrel having a first piston and the second barrel have a second , the first piston being moveable between a variable first position and a second position
20 within the first , and the second piston being moveable between a variable first position and a second position within the second barrel, wherein, in use, movement of the pistons towards their respective first positions can draw tive fluids into each of the barrels, and movement of the pistons s their respective second positions can force their respective fluids out of each of the 25 s, - for each barrel, at least one fluid inlet valve to allow the respective fluid to flow into the tive barrel when the respective piston moves towards the respective first position; - at least one fluid outlet valve operable to allow the fluids to flow out of the barrels 30 when the respective pistons move towards their tive second positions; - biasing means to bias the first piston and second piston toward their respective first positions; - a first dosage control part for the first barrel that slides linearly on a longitudinal axis of the at least one barrel, and can lock in any one of a plurality of notches that each 35 correspond to a first dosage mark to abut a first abutment portion of the first piston to thereby define the variable first position of the first piston, a second dosage control part for the second barrel that slides linearly on the longitudinal axis of the at least one barrel, and can lock in any one of a plurality of notches that each correspond to a second dosage mark to abut a second abutment portion of the second piston to y define the first variable position of the second piston; - piston actuating means operable to move the first piston and the second piston towards their respective second positions to dispense the respective fluids from the 5 applicator, Wherein a user may set the dosage of each of the first barrel and the second barrel via the respective first dosage control part and second dosage control part, and deliver a dosage of the first fluid and the second fluid by the piston actuating means. 10 20. The ator of claim 19 wherein there is a biasing means for each of the first piston and the second piston.
21. The applicator of claim 19 or 20 wherein at least one fluid outlet valve is provided for each of the first barrel and the second barrel.
22. The applicator of claim 19 or 20 wherein the at least one fluid outlet valve may operate as a common outlet valve for both the first barrel and the second barrel.
23. The applicator of any one of claims 19 to 22 wherein each of the first and second dosage control parts are lockable in their selected position.
24. The ator of any one of claims 19 to 23 wherein the first piston comprises a first
25 piston rod and a first piston head, wherein a first portion of the first piston rod is accessible from an exterior of the applicator, and second piston comprises a second piston rod and a second piston head, n a second portion of the second piston rod is also accessible from an exterior of the applicator. 30 25. The applicator of claim 24 wherein each piston rod comprises a lever portion which allows a user to move the respective piston ndently of the piston ing means and independently of the other piston.
26. The applicator of any one of claims 19 to 25 wherein the first barrel and the second 35 barrel each have a substantially ‘D’ shaped cross-section.
27. The applicator of claim 26 wherein the first barrel and second barrel are back to back on the respective straight walls of their substantially “D” shaped cross section.
28. An applicator comprising - a barrel; - a piston moveable between a first position and a second position within the 5 barrel, wherein, in use, movement of the piston towards the first position draws a fluid into the barrel, and nt of the piston towards the second position forces fluid out of the barrel; - at least one fluid inlet valve and at least one fluid outlet valve to allow fluid to flow into and out of the barrel; 10 - biasing means to bias the piston toward the first position; - a dosage control part that slides linearly on a longitudinal axis of the at least one barrel, and can lock in any one of a ity of notices notches that each correspond to a dosage mark to abut an nt portion which in turn defines the variable first position of the piston and therefore a dosage of the first fluid; and 15 - piston actuating means le to move the piston towards the second position to dispense a fluid from the applicator; wherein the at least one fluid inlet valve and at least one fluid outlet valve are located substantially nt each other. 20
29. The applicator of claim 28 n the at least one fluid inlet valve and at least one fluid outlet valve are provided at a first end of the applicator, and the ator has an outlet provided at an opposite second end of the applicator.
30. The applicator of claim 28 or 29 wherein the applicator comprises a manifold portion in 25 fluid communication with one end of the barrel, wherein the manifold portion is in fluid communication with the at least one fluid inlet valve and at least one fluid outlet valve.
31. A method of using an applicator, comprising or including the steps of, 30 a. Fluidly connecting a supply of a first fluid to a manifold of the applicator, b. Adjusting a dosage of a first piston e within a first barrel of the applicator using a first dosage control part, where the first dosage control part is slidingly lockable along a major axis of the first barrel in any one of a plurality of notches that correspond to a dosage mark, the first dosage control part abutting a first 35 abutment portion on the first piston which in turn varies a first position of the first piston and therefore the dosage of the first fluid, c. Priming the first barrel using a first lever portion, d. Forcing a first fluid from the first barrel by moving the first piston from the first position to a second position within the , by use of a piston actuating means, the first fluid moving from the first barrel via at least one fluid outlet valve, e. Drawing the first fluid from the supply into the first barrel by the first piston 5 moving from the second position back to the first position, the first fluid moving in via a first fluid inlet valve, the movement from the first position to the second position being biased, Wherein a user may set the dosage of the applicator via the first dosage control part, and deliver a dosage of the first fluid by the piston actuating means.
32. An applicator substantially as herein described, with reference to any one of more the accompanying drawings.
33. A method of using an applicator substantially as herein described with nce to 15 any one or more of the accompanying drawings. l I —-143 9‘ he Lisa !/1-! 1\ El Hag-3H (Oi) 3-3;“— 597-22 =3 3 “\ (,me \l/Ib gone. "LL/(e
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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NZ726592A NZ726592A (en) | 2015-11-19 | 2015-11-19 | An applicator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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NZ726592A NZ726592A (en) | 2015-11-19 | 2015-11-19 | An applicator |
Publications (1)
Publication Number | Publication Date |
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NZ726592A true NZ726592A (en) | 2021-02-26 |
Family
ID=77199092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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NZ726592A NZ726592A (en) | 2015-11-19 | 2015-11-19 | An applicator |
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NZ (1) | NZ726592A (en) |
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2015
- 2015-11-19 NZ NZ726592A patent/NZ726592A/en unknown
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