U.S. patent number 3,927,806 [Application Number 05/426,478] was granted by the patent office on 1975-12-23 for applicator for attachment to a spray mist dispenser.
Invention is credited to Philip Meshberg.
United States Patent |
3,927,806 |
Meshberg |
December 23, 1975 |
**Please see images for:
( Certificate of Correction ) ** |
Applicator for attachment to a spray mist dispenser
Abstract
An applicator for attachment to a container for aerosol spray
under pressure wherein the container is of the type having a
dispensing valve provided with a projecting stem which releases a
jet of spray upon depression relative to the container. The
applicator includes a housing adapted to partially enclose the
container and provided with a tubular sidewall surrounding the
stem. A spray assembly within the sidewall grips the stem and
directs the spray released thereby through a radial port in the
sidewall. A sleeve is telescopically mounted on the sidewall for
axial motion between a retracted position overlying the radial port
and an extended position positioned beyond the sidewall. The sleeve
is connected to the sidewall by two ears depending from the sleeve,
which are provided at their free ends with two bosses which pass
through two aligned axial slots in the sidewall. In the extended
position, the bosses enable pivoting motion of the sleeve into
concentric alignment with the radial port. Each boss is provided
with an enlarged head positioned internally of the sidewall to
prevent motion of the boss out of the slot. In the preferred
embodiment, the shaping of the ears which depend from the sleeve is
such that pivoting of the sleeve when in the extended position is
possible only in a direction which will cause concentric alignment
with the radial port and furthermore so that when aligned, the
sleeve will point slightly upward to aid in dispensing the spray
mist.
Inventors: |
Meshberg; Philip (Fairfield,
CT) |
Family
ID: |
26964137 |
Appl.
No.: |
05/426,478 |
Filed: |
December 20, 1973 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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286916 |
Sep 7, 1972 |
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Current U.S.
Class: |
222/402.12 |
Current CPC
Class: |
A61M
15/009 (20130101) |
Current International
Class: |
A61M
15/00 (20060101); B65D 083/14 () |
Field of
Search: |
;222/156,183,182,402.13,402.14,402.12,179.5,522,524,528,545,402.11
;128/208 ;220/30.5,38 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Knowles; Allen N.
Assistant Examiner: Skaggs; H. Grant
Attorney, Agent or Firm: Kenyon & Kenyon Reilly Carr
& Chapin
Parent Case Text
RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No.
286,916 filed Sept. 7, 1972, and now abandoned.
Claims
What is claimed is:
1. An applicator for attachment to a container for dispensing spray
mist, the container being of the type having a dispensing valve
provided with a projecting stem which releases a jet of spray upon
limited axial motion of the stem in a direction relatively inward
of the container, the applicator comprising,
a housing adapted to at least partially enclose the container, said
housing further including,
a tubular sidewall adapted to surround the stem of the dispensing
valve, said sidewall having an axial outer end spaced remotely from
the container and an axial inner end,
a radial port extending through said sidewall,
means mounted within said sidewall adapted to grip the stem of the
dispensing valve and to direct the jet of spray released thereby
through said radial port,
two aligned, axially extending, closed slots through said sidewall
at opposite extremities of a diameter thereof which is disposed
perpendicularly to the axis of sid radial port, each having an
enlarged opening at its inner axial end,
a sleeve telescopically mounted on said sidewall for axial sliding
motion between a retracted position overlying said radial port, and
an extended position in which at least a major portion of said
sleeve is positioned beyond the outer end of said sidewall, with
cooperable abutting portions of said sleeve and said sidewall at a
position directly above said radial port when said sleeve is in an
extended position thereby insuring that pivoting of the sleeve is
only possible in a direction which will align it with said radial
port, and the end of said sleeve, when said sleeve is in said
retracted position, terminating such that it does not extend above
the top of said tubular side wall thereby preventing dust or dirt
collection on the inside of said sleeve,
two ears extending from an axially inner end of said sleeve in
partially overlapping relation to said slots,
two bosses projecting from said ears slidingly received in said
slots, said bosses abutting against the closed outer ends of said
slots in the extended position of said sleeve and enabling pivoting
motion thereof into generally concentric alignment with said radial
port, each said boss having,
an enlarged head, of a size permitting said enlarged head to freely
pass through the enlarged opening in said slots, positioned
internally of said sidewall, said head overlapping the adjacent
edges of said slot to prevent motion of said boss out of said slot
except when in a fully retracted position, and
a raised surface at the lower end of said sidewall below said
radial port, said surface acting as a stop to prevent said sleeve
from sliding in said slots when pivoted to a dispensing
position.
2. An applicator as defined in claim 1 wherein said cooperable
abutting portions comprise,
a projecting portion connected with said sidewall, said portion
being directly above said radial port.
3. The improvement in claim 1 wherein the outer end of said
sidewall is essentially flat and wherein said cooperable abuting
portions comprise a downwardly extending portion of said sleeve
abuting said sidewall directly above said radial port.
4. The improvement of claim 1 in which the end of said sleeve, when
said sleeve is in said closed position, is coterminous with said
top, so as to form with it a smooth surface that catches no dirt or
dust.
Description
BACKGROUND OF THE INVENTION
This invention relates to applicators for attachment to aerosol
spray containers, of the type utilized by a sufferer from bronchial
ailments to direct a medicated spray into his mouth. In particular,
the invention relates to an improvement on an applicator of the
type disclosed in applicant's earlier U.S. Pat. No. 3,184,115
issued May 18, 1965.
The applicator disclosed in applicant's aforementioned U.S. Pat.
No. 3,184,115 includes a housing adapted to enclose an aerosol
spray container. In one embodiment that housing includes an upper
tubular sidewall on which is mounted a sliding sleeve. Mounted
within the sidewall is a spray assembly having an axial passage
adapted to frictionally grip a projecting stem on the upper end of
the container through which a jet of spray is released upon
selective, relative movement of the stem into the container.
Passages in the spray assembly direct the jet of spray in a radial
direction through a nozzle. The sleeve is connected to the sidewall
by two plain projecting bosses which ride in two depressed axial
slots in the sidewall and which act as axles when the sleeve is
moved to an upper extended position for pivoting motion of the
sleeve into concentric alignment with the nozzle to assist in
guiding the flow of spray into the user's mouth. To prevent ingress
of dust and other foreign matter into the nozzle area when the
sleeve is in the retracted position, a removable cap is provided in
the upper end of the sleeve.
Although such prior device has proved satisfactory for its intended
purposes, certain problems could be encountered from time to time.
For example, the use of a plain boss riding in a slot to secure the
sleeve to the sidewall could permit the sleeve to become
disconnected in its extended position due to the boss moving
laterally out of the slot. Disconnection, which is facilitated by
the natural resilience of the plastics customarily used, might
occur when the applicator became worn and when the sleeve is
subjected to careless handling in its movement from one position to
another relative to the sidewall. Another problem could occur if
the user forgot to replace the cap on the sleeve after it had been
returned to its retracted position, thus, permitting entry of
foreign material to the nozzle area in which event the foreign
materials would be blown into the user's mouth upon the next use of
the device.
It would therefore be desirable to provide an applicator of the
type generally described in which the possibility that the sleeve
could accidentally become detached from the remainder of the
applicator is minimized. It would also be desirable if the hygienic
nature of the applicator could be enhanced by obviating the
necessity for a replaceable cap which can become lost. In addition,
it is desirable that such an applicator should be designed so that
the sleeve when extended can only be pivoted in a direction which
would cause it to become aligned with the axial passage in the
spray assembly. Such should be obtained through a simple process
which does not require complicated shapes in the dispenser.
SUMMARY OF THE INVENTION
The present invention provides an applicator for attachment to an
aerosol spray container, which obviates or minimizes problems of
the type previously described.
More particularly, the invention comprises an applicator for
attachment to a container for aerosol spray under pressure, wherein
the container is of the type having a dispensing valve provided
with a projecting stem which releases a jet of spray upon limited
axial motion of the stem in a direction relatively inward of the
container. The applicator includes a housing adapted to at least
partially enclose the container and is provided with a tubular
sidewall has an axial outer end spaced remotely from the container
and a radial port extending through the sidewall. A spray assembly
mounted within the sidewall is adapted to grip the stem of the
dispensing valve and direct the jet of spray relased thereby
through the radial port. The sidewall includes two aligned, axially
extending, closed slots positioned at opposite extremities of a
diameter of the sidewall, which diameter is disposed
perpendicularly to the axis of the radial port. A sleeve is
telescopically mounted on the sidewall for axial sliding motion
between a retracted position overlying the radial port and an
extended position in which the sleeve is positioned beyond the
outer end of the sidewall. Two ears extend from an axially inner
end of the sleeve in partially overlapping relation to the slots.
Each ear is provided with a boss which is slidingly received in an
adjacent one of the slots. The bosses abut against the closed outer
ends of the slots in the extended position of the sleeve and they
function as axles for pivoting motion of the sleeve into generally
concentric alighnment with the radial port. Each boss is provided
with an enlarged head positioned on an opposite side of the
sidewall from the associated ear, and the head overlaps the
adjacent edges of the slot to prevent motion of the boss out of the
slot.
The formation of the ears which depend from the remainder of the
sleeve is done so that rotation only in one direction is possible
when the sleeve is extended. This is accomplished by a cut-out such
that the sleeve extends downwardly on the side of the radial port
to the extent that it prevents backward motion of the sleeve when
in the extended position. The rear side contains a cut-out
sufficient to allow the sleeve to pivot to a position where the
sleeve is aligned with the radial port. Furthermore, this design
results in a slight angular elevation of the axis of the sleeve
when positioned in alignment with the axial port to ease the use of
the dispenser. (In each case throughout the specification, the
dispenser is shown and described in an upright position. It should
be noted that in many cases dispensers of this nature are inverted
during use. Thus, the elevated or upwardly pointing sleeve, when in
use may be in fact, depressed or downwardly pointing.)
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of an applicator for attachment to an
aerosol spray, constructed in accordance with the preferred
embodiment of the invention;
FIG. 2 is a perspective view of the applicator shown in FIG. 1 with
a sleeve forming a part of the invention being moved from a
retracted to an extended position;
FIG. 3 is a perspective view of the applicator shown in FIG. 2 with
the sleeve rotated through 90 degress to a position for use in
directing aerosol spray into a user's mouth;
FIG. 4 is a cross-sectional, side view of the applicator shown in
FIG. 2 taken along the lines 5--5 therein.
FIG. 5 is a cross-sectional, side view of the applicator shown in
FIG. 2 taken along the lines 5--5 therein.
FIG. 6 is a cross-sectional, side view of the applicator shown in
FIG. 3 taken along the lines 6--6 therein.
FIG. 7 is a cross-sectional, side view of the applicator shown in
FIG. 6 but with the applicator depressed relative to the container
to release a jet of spray.
FIG. 8 is an exploded perspective view of the applicator shown in
FIG. 1 in an initial stage prior to assembly of the sleeve to the
applicator.
FIG. 9 is a perspective view of the applicator shown in FIG. 8 in
an initial step of assembly of the sleeve to the applicator;
FIG. 10 is a cross-sectional plan view of the applicator shown in
FIG. 9 taken along the lines 10--10 therein.
FIG. 11 is a perspective view of the applicator shown in FIG. 9 in
a further step of assembling the sleeve to the applicator.
FIG. 12 is a cross-sectional plan view of the applicator shown in
FIG. 11 taken along the lines 12--12 therein;
FIG. 13 is a perspective view of the applicator shown in FIG. 11 in
a final step of assembly of the sleeve to the applicator;
FIG. 14 is a cross-sectional plan view of the applicator shown in
FIG. 13 taken along the lines 14--14 therein;
FIG. 15 is a perspective view, partially in cross section, of an
enlarged scale showing portions of structure for connecting the
sleeve to the applicator; and
FIG. 16 is a cross-sectional end view of a portion of the structure
for connecting the sleeve to the applicator shown in FIG. 16.
FIG. 17 is a view identical to that of FIG. 5 but for the preferred
applicator embodiment having a horizontal top.
FIG. 18 is a view of the embodiment of FIG. 17 with the sleeve
aligned and the applicator depressed and spraying on an angle.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1 of the drawings, an applicator for a container
of aerosol spray under pressure, constructed in accordance with a
preferred embodiment of the invention, is there shown.
The applicator includes a generally tubular body 2 comprising a
lower, skirt portion 4 shaped to loosely enclose a cylindrical,
container 6 of aerosol spray under pressure. The container 6 is of
a conventional type including an internal dispensing valve (not
shown) having a resiliently mounted upwardly projecting stem 8
(FIG. 4) which, upon being depressed a limited distance inwardly
into the container 6, releases a measured amount of spray upwardly.
Typically, the aerosol spray would be a medication for sufferers
from bronchial and asthmatic complaints although the invention can
also be employed with sprays for other purposes.
Extending above the skirt portion 4 and connected thereto by an
intervening shoulder is an upper, concentric, sidewall 10
surrounding and extending upwardly above the stem 8 of the
container. Integral with the sidewall at its upper end there is a
spray assembly which includes a solid end wall 12 having a central,
depending portion 13 is provided with a central axial passage 14
having an enlarged lower portion which forms a frictional fit with
the upper end of the stem 8 of the container.
The housing 2 is assembled onto the container 6 by slipping it over
the container and then pressing it downwardly so that the passage
14 is forced on to and grips the upper end of the stem 8.
Thereafter to release spray (FIGS. 6 and 7), the user presses on
the upper end of the housing 2 and on the base of the container 6
in the region of two finger openings 18 cut in the skirt 4 at its
lower end, thus causing relative closing motion between the stem 8
and the container so that a jet of spray is released upwardly. At
its upper end, which is closed, the axial passage 14 communicates
with a radial nozzle 20 through which the jet of spray is directed
radially outwardly. The nozzle 20 is aligned with an enlarged
sidewall 10 and is defined by an inwardly extending, horizontal
tubular wall 23 (FIGS. 10 and 12) secured at its inner end to the
depending portion 13.
When the applicator is not is use, the radial port 22 is closed off
by a sleeve 24 slidably mounted on the sidewall 10 having its
upper, or axially outer, end on a level with the upper end of the
sidewall 10 when the sleeve is in the lower, or retracted, position
shown in FIG. 4. The peripheral edge of the end wall 12, which is
flush with the surface of the sidewall 10, forms a close sliding
fit with the bore of the sleeve 24 so that the sleeve and the end
wall 12 prevent passage of dust and other foreign matter into the
radial port 22 when the sleeve is in its retracted position,
thereby obviating the need for a replacement cap on the sleeve
24.
Integral with the sleeve 24 extending downwardly from its lower end
on opposite sides of the sidewall 10 are two, coextensive ears 28
(FIG. 8) in partially overlapping relation to two vertical,
aligned, closed slots 30 extending through the sidewall 10. The
slots 30 are aligned at opposite ends of a diameter of the
sidewall, which is disposed perpendicularly to the axis of the
previously mentioned radial port 22. Each of the ears 28 (FIGS. 15
and 16) at its lower extremity is provided with a radially
projecting boss 32 which passes inwardly through the adjacent one
of the slots 30 for vertical sliding motion.
The sleeve 24 may be slid upwardly (FIG. 2) to an extended position
in which the bosses 32 abut the closed upper ends of the slot 30.
At this point the bosses function as axles permitting rotation of
the sleeve into a position generally of concentric radial alignment
with the radial port 22 (FIGS. 7 and 18). It will be appreciated
that this is achieved by positioning the upper ends of the slots 30
generally on a level with the axis of the radial port 22. It then
functions to assist in guiding the spray into the users mouth. Once
the sleeve 24 has been moved to its extended position, there is a
possibility of pivoting it either in the direction necessary to
align radial port 22 or in the reverse direction in which it would
be facing in an opposite direction from the radial port. If the
latter should occur then the user placing the sleeve adjacent his
mouth would receive no spray, while the jet is sprayed with the
directed outwardly away from the user. The preferred construction
for preventing rotation in the wrong direction is illustrated by
FIGS. 17 and 18. As shown thereon, the sleeve 24 is shaped so that
its portion 25 which is directly above the radial port 22 extends
downwardly a sufficient distance to contact the end wall 12 to
prevent rotation of the sleeve backward away from the radial port.
Thus, rotation forward to the position shown in FIG. 18 is the only
type of rotation or pivoting possible. As illustrated on FIG. 18,
this shaping also results in a sleeve being rotated through a
smaller angle to obtain an upwardly inclined mist path. Thus, by
this simple shaping two ends are served: rotation only in a proper
direction to align the sleeve with the radial port is insured while
at the same time an upwardly inclined mist path is obtained.
Furthermore, the construction of the dispenser is simplified in
that the top of the dispenser can be made essentially flat.
A second manner of avoiding undesirable rotation is through the use
of a verticle projecting lip 40 (FIGS. 2 and 5). This lip is formed
so that it projects above the end wall 12 at the upper end of the
side wall 10 on the side thereof adjacent the radial port 22. The
lip 40 is configured to at least partially overlap the interior of
the sleeve adjacent the leading edge 34 at its lower end so that
the latter cannot pivot reversely over the lip 40 and pivoting of
the sleeve into a position out of alignment with the radial port
22, is prevented.
A raised surface 43 is provided at the lower end of the sidewall 10
and has a curved upper edge configured to matingly engage the edge
34 of the sleeve when it is in its retracted position.
The previously mentioned ears 28 are formed by omitting or removing
portions of the sleeve to form a curved leading edge 34 shown on
FIGS. 2, 7, 17 and 18. The leading edge 34 abuts the side wall 10
on the lower side of the sleeve in its position aligned with the
nozzle to limit further rotational movement of the sleeve beyond
that position. In the embodiment of FIG. 7, this limitation occurs
after a rotation of approximately 90.degree.. In the embodiment
illustrated by FIG. 16, a smaller amount of rotation is obtained.
An opposite trailing edge 36 of the sleeve is shaped to permit it
to clear the upper end of the side wall 10 without interference
during pivoting motion afterr the sleeve has been raised to its
extended position, in both the embodiments of FIG. 7 and of FIG. 17
and 18.
Although the second means of preventing rotation on the wrong
direction works well, it requires a more complex shape of the
structure in that the lip 40 must be formed therein and in addition
does not offer the advantage of having an upwardly directed mist.
Thus, the former method of shaping the cut out in the sleeve is
preferred.
To prevent the bosses 32 from riding out of their associated slots
30, as could inadvertently occur in previous devices due to rough
handling, wear and the resilience of the plastic material from
which the applicator components are made, each boss is provided
with an enlarged head 44 (FIGS. 15 and 16) which overlaps the
interior of the sidewall 10 along the edges of the slot 30. In this
way accidental separation of the sleeve when it is in its extended
position from the remainder of the applicator, is prevented. Each
slot 30 is provided with a countersunk enlarged region 46 on the
interior side of the sidewall to receive the enlarged head 44 of
each boss so that the head does not project into the interior
volume of the sidewall.
To enable the sleeve 24 to be assembled on the sidewall 10, each of
the slots 30 is provided with an enlarged opening 48 at its lower
end. The opening 48 is of sufficient size to permit the head 44 on
each boss to pass through from outside the sidewall 10 to the
interior.
The method by which the sleeve 24 is assembled to the housing,
forming a part of the present invention, is shown in FIGS. 8
through 14. In an initial step the ears 28 at the lower end of the
sleeve are forced over the housing and the resilient plastic
material of which the sleeve is formed permits the ears to deflect
outwardly so that the enlarged heads 44 on the two bosses ride on
the exterior surfaces of the sidewall 10 (FIG. 10). The assembler
then rotates the sleeve manually relative to the housing until at
least one of the bosses catches on an edge of one of the slots 30
(FIGS. 11 and 12). The sleeve is then slid manually down while the
enlarged heads 44 are still catching on the edges of, but riding
outside, the slots 30 until the enlarged portions 48 at the lower
ends of the slots 30 are reached. At that point the natural
resilience of the material causes the heads 44 to snap through the
openings 48 (FIGS. 13 and 14) so that on the next subsequent
elevation of the sleeve it will be positively secured to the
housing against accidental detachment in the extended position.
Alternatively, the ears 28 may be forced over the housing so that
at least one of the bosses catches on an edge of one of the slots
30. Thereupon, the movement of that boss over the surface 10 is
stopped, but the other continues until it too is coupled. The
sleeve is then slid manually down as in the assembly method first
described.
Through this arrangement it is insured that when the sleeve is
being moved from the retracted position and pivoted into the
operating position there is no danger of it becoming detached.
Still, assembly is facilitated by placing the openings 48 at the
inner ends of the axial slots. In that position coaction between
the sleeve and the sidewall prevents the sleeve from becoming
dislodged and thus, the protection afforded at other sleeve
positions is not needed. This combination of the boss with the
enlarged head and an enlarged opening at the bottom of the slot
insures ease of assembly while still avoiding any danger of the
sleeve becoming dislodged.
FIG. 18 also illustrates the manner in which skirt 4 can be made to
terminate at the bottom of container 6 when in an unoperated
position. This prevents accidental discharge when the container is
set down, i.e., container 6 must be pushed inside skirt 4 to obtain
a discharge. Also shown on that figure is the manner in which the
top 50 of surface 43 acts as a stop to prevent the sleeve 24 from
sliding down in slots 30 when in an operating position.
* * * * *