U.S. patent number 3,675,360 [Application Number 05/052,174] was granted by the patent office on 1972-07-11 for fog generator for insecticides and the like.
Invention is credited to Ruth B. Pierce.
United States Patent |
3,675,360 |
Pierce |
July 11, 1972 |
FOG GENERATOR FOR INSECTICIDES AND THE LIKE
Abstract
A gaseous fog generator connectably receiving aerosol containers
charged with material to be liberated as a mist and subsequently
treating said mist with a processing means applying heat thereto
and which ensures thorough expansion of said material into the
gaseous state. The aerosol container is attached to a shell for
support and which accommodates the processing means that channels
and which exposes mist nozzled therein to heat, while isolating the
shell from said heat. A tubular control and delivery stem
characterizes the invention, wherein this one member is both
operable to depress the aerosol valve member for discharge of
material and operable to transport said discharged material for
liberation as a mist and subsequent processing before final
delivery.
Inventors: |
Pierce; Ruth B. (San Gabriel,
CA) |
Family
ID: |
21975932 |
Appl.
No.: |
05/052,174 |
Filed: |
July 6, 1970 |
Current U.S.
Class: |
43/129; 392/342;
392/404; 422/199; 392/399; 422/306 |
Current CPC
Class: |
A01M
1/2077 (20130101) |
Current International
Class: |
A01M
1/20 (20060101); A01m 019/00 () |
Field of
Search: |
;43/129 ;252/359A
;261/15 ;21/119 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Medbery; Aldrich F.
Claims
Having described my invention, I claim:
1. A fog generator for connectably receiving and liberating
pressurized liquid material from an aerosol container having a
valve fitting with a coupling member and with an opening
therethrough exposing a depressible valve element therein operable
to liberate said liquid material, including; a supportable shell
with a chamber therein and having a coupling complementary to and
releasably engageable with the first mentioned coupling member,
material processing means within said chamber and having a
discharge tube opening from within the chamber to outside
atmosphere, and a control-delivery means comprising a tubular
operating stem in communication at its opposite ends with the valve
fitting opening and discharge tube respectively and shiftably
carried and operable to engage and to depress the said valve
element of the valve fitting of the aerosol container when it is
connected with said coupling and thereby liberate liquid material
into said valve fitting opening and into and through the operating
stem for release and exposure within the discharge tube for
processing and subsequent discharge to outside atmosphere.
2. The fog generator as set forth in claim 1 and wherein the shell
and coupling thereof are of coaxial form establishing a "wand"-like
extension of the aerosol container connected thereto.
3. The fog generator as set forth in claim 1 and for an aerosol
with a coupling member that is threaded, and wherein the coupling
of the generator is threaded and is threadedly engageable with said
threaded coupling member for connection of the aerosol container to
the generator.
4. The fog generator as set forth in claim 1, and for an aerosol
container that has a reinforced encirclement surrounding the
coupling member that is threaded, and wherein the coupling of the
generator is threaded and is threadedly engageable with said
threaded coupling member, and wherein the coupling of the generator
has an end face normal to its threaded axis to seat on the said
reinforced encirclement when the generator coupling is threadedly
engaged with the first mentioned aerosol coupling member thereby
stabilizing the aerosol container relative to the generator.
5. The fog generator as set forth in claim 1 and for an aerosol
with an access opening into the valve fitting, and wherein the stem
of the control-delivery means is sealed in a gland carried by the
coupling of the generator and projects therefrom into said opening
in the valve fitting to engageably depress the element therein and
liberate material therethrough.
6. The fog generator as set forth in claim 1 and for an aerosol
with an access opening into the valve fitting, and wherein the stem
of the control-delivery means is sealed in a gland carried by the
coupling of the generator to have sealed engagement with the valve
fitting, the stem projecting through the gland and into the sealed
opening of the valve fitting to engageably depress the element and
to transport liquid liberated therein.
7. The fog generator as set forth in claim 1 and for an aerosol
with an access opening into the valve fitting, and wherein the stem
of the control-delivery means is sealed in a gland carried by the
coupling of the generator to have sealed engagement with the valve
fitting and open laterally at its valve element engaging end, the
stem projecting through the gland and into the opening of the valve
fitting to engageably depress the element therein and to receive
liquid liberated laterally thereinto.
8. The fog generator as set forth in claim 1 and wherein the stem
of the control-delivery means has a shoulder engageable by a
transversely disposed lever anchored to a fulcrum on the shell and
projecting through a window in the shell for shifting and to engage
with the shoulder to operate the stem to depress the valve
element.
9. The fog generator as set forth in claim 1 and wherein the stem
of the control-delivery means has a shoulder engageable by a
transversely disposed lever anchored to a fulcrum on the shell and
a spring seated in the coupling of the generator and holding the
lever opposed to said shoulder, and said lever projecting through a
window in the shell for shifting and to engage with the shoulder to
operate the stem to depress the valve element.
10. The fog generator as set forth in claim 1 wherein the stem of
the control-delivery means has a nozzle at its liberating end and
is sealed in a gland carried by the coupling of the generator and
opens laterally at its valve element engaging end, the tubular
coupling of the generator having sealed engagement with the valve
fitting, the stem projecting therefrom into the opening of the
valve fitting to engageably depress the element therein and to
receive liquid liberated laterally thereinto, and wherein the stem
of the control-delivery means has a shoulder engageable by a
transversely disposed lever anchored to a fulcrum on the shell and
a spring seated in the coupling of the generator and holding the
lever opposed to said shoulder, and said lever projecting through a
window in the shell for shifting and to engage with the shoulder to
operate the stem to depress the valve element.
11. A fog generator for connectably receiving and liberating
pressurized liquid material from an aerosol container and
processing it for subsequent gaseous discharge, said aerosol
container having a valve fitting with a coupling member and with an
opening therethrough exposing a depressible valve element therein
operable to liberate said liquid material as a mist, including; a
supportable shell with a chamber therein and having a coupling
complementary to and releasably engageable with the first mentioned
coupling member, mist processing means within said chamber and
having a discharge tube opening from within the chamber to outside
atmosphere and having heating means radiating heat into said
discharge tube, and a control-delivery means comprising a tubular
operating stem in communication at its opposite ends with the valve
fitting opening and discharge tube respectively and shiftably
carried and operable to engage and to depress the said valve
element of the valve fitting of the aerosol container when it is
connected with said coupling and thereby liberate liquid material
into said valve fitting opening and into and through the operating
stem for release and exposure within the discharge tube for
subsequent absorption of radiated heat and gaseous discharge to
outside atmosphere.
12. The gaseous fog generator as set forth in claim 11 and wherein
the shell and coupling thereof are of coaxial form establishing a
"wand"-like extension of the aerosol container connected
thereto.
13. The gaseous fog generator as set forth in claim 11 and for an
aerosol with a coupling member that is threaded, and wherein the
coupling of the generator is threaded and is threadedly engageable
with said threaded coupling member for connection of the aerosol
container to the generator.
14. The gaseous fog generator as set forth in claim 11 and for an
aerosol container that has a reinforced encirclement surrounding
the coupling member that is threaded, and wherein the coupling of
the generator is threaded and is threadedly engageable with said
threaded coupling member, and wherein the coupling generator has an
end face normal to its threaded axis to seat on the said reinforced
encirclement when the generator coupling is threadedly engaged with
the first mentioned aerosol coupling member thereby stabilizing the
aerosol container relative to the generator.
15. The gaseous fog generator as set forth in claim 11 and for an
aerosol with an access opening into the valve fitting, and wherein
the stem of the control-delivery means is sealed in a gland carried
by the coupling of the generator and projects therefrom into said
opening in the valve fitting to engageably depress the element
therein and liberate material therethrough.
16. The gaseous fog generator as set forth in claim 11 and for an
aerosol with an access opening into the valve fitting, and wherein
the stem of the control-delivery means is sealed in a gland carried
by the coupling of the generator to have sealed engagement with the
valve fitting, the stem projecting through the gland and into the
sealed opening of the valve fitting to engageably depress the
element and to transport liquid liberated therein.
17. The gaseous fog generator as set forth in claim 11 and for an
aerosol with an access opening into the valve fitting, and wherein
the stem of the control-delivery means is sealed in a gland carried
by the coupling of the generator to have sealed engagement with the
valve fitting and open laterally at its valve element engaging end,
the stem projecting through the gland and into the opening of the
valve fitting to engageably depress the element therein and to
receive liquid liberated laterally thereinto.
18. The gaseous fog generator as set forth in claim 11 and wherein
the stem of the control-delivery means has a shoulder engageable by
a transversely disposed lever anchored to a fulcrum on the shell
and projecting through a window in the shell for shifting and to
engage with the shoulder to operate the stem to depress the valve
element.
19. The gaseous fog generator as set forth in claim 11 and wherein
the stem of the control-delivery means has a shoulder engageable by
a transversely disposed lever anchored to a fulcrum on the shell
and a spring seated in the coupling of the generator and holding
the lever opposed to said shoulder, and said lever projecting
through a window in the shell for shifting and to engage with the
shoulder to operate the stem to depress the valve element.
20. The gaseous fog generator as set forth in claim 11 wherein the
stem of the control-delivery means has a nozzle at its liberating
end and is sealed in a gland carried by the coupling of the
generator and opens laterally at its valve element engaging end,
the tubular coupling of the generator having sealed engagement with
the valve fitting, the stem projecting therefrom into the opening
of the valve fitting to engageably depress the element therein and
to receive liquid liberated laterally thereinto, and wherein the
stem of the control-delivery means has a shoulder engageably by a
transversely disposed lever anchored to a fulcrum on the shell and
a spring seated in the coupling of the generator and holding the
lever opposed to said shoulder, and said lever projecting through a
window in the shell for shifting and to engage with the shoulder to
operate the stem to depress the valve element.
21. A fog generator for connectably receiving and liberating
pressurized liquid material from an aerosol container and
processing it with isolated heat for subsequent gaseous discharge,
said aerosol container having a controllable material discharging
valve fitting with a coupling member, including; a supportable
shell with a chamber therein and a coupling projecting from the
shell and with a remote end complementary to and releasably
engageable with the first mentioned coupling member, material
processing means within said chamber and having a discharge tube
opening from within the chamber to outside atmosphere and having
heating means radiating heat into said discharge tube, and a
control-delivery tube shiftable to operate said valve fitting to
deliver material from the said valve fitting into the discharge
tube, said coupling being comprised of heat insulating members
disposed between the shell and the valve fitting connected
thereto.
22. The gaseous fog generator for processing discharged aerosol
material with isolated heat as set forth in claim 21, and wherein
an insulating member extends between and joins the shell and said
projecting coupling.
23. The gaseous fog generator for processing discharged aerosol
material with isolated heat as set forth in claim 21, and wherein
an insulating member extends between the remote end of and said
coupling per se.
24. The gaseous fog generator for processing discharged aerosol
material with isolated heat as set forth in claim 21, wherein an
insulating member extends between the shell and said projecting
coupling, and wherein an insulating member extends between the
remote end of and said coupling per se.
25. Apparatus for forming a fog from the mist emerging from an
aerosol container and comprising in combination;
a discharge tube,
means for controllably heating the discharge tube,
a control-delivery tube having first and second ends,
a coupling adapted to have an aerosol container attached
thereto,
means shiftably mounting said control-delivery tube so that said
first end is proximate with one end of said discharge tube and said
second end is inserted in said coupling, and
means for moving said control-delivery tube along its axis whereby
it can be shifted to control the flow of mist passing through it
from said aerosol container when said container is attached to said
coupling.
26. Apparatus as set forth in claim 25 wherein said heating means
and said discharge tube have more thermal inertia than that
involved in merely heating the discharge tube, whereby said
apparatus is operative to produce fog for a continued time.
27. Apparatus as set forth in claim 25 wherein there is
provided;
a shell surrounds said discharge tube and said heating means,
a first wall of heat insulating material mounting said shell in
fixed relation with respect to said discharge tube and in spaced
relation to said heating means, and
means mounting said coupling to said wall.
28. Apparatus for generating fog from the mist emitted from an
aerosol container and comprising in combination;
a discharge tube,
a thermal storage unit surrounding said discharge tube,
an electrical heating unit mounted in heat transfer relationship
with said thermal storage means and said discharge tube,
a coupling to which an aerosol container may be attached,
means mounting said coupling to said discharge tube, said means
being comprised in part of thermal insulating material of tubular
shape and substantial diameter to reduce the flow of heat from said
heating unit to said coupling,
a control-delivery tube,
means shiftably mounting said control-delivery tube with one end in
said coupling and the other in communication with an end of said
discharge tube, and
means moving said control-delivery tube along its length so that it
can be shifted to actuate the valve mechanism of an aerosol
container attached to said coupling and conduct the effluent from
said container to said discharge tube.
29. Apparatus for generating fog from the mist emitted from an
aerosol container and comprising in combination;
a discharge tube,
an electrical heating unit mounted in heat transfer relationship
with said discharge tube,
a coupling to which an aerosol container may be attached,
means mounting said coupling to said discharge tube, said means
being comprised in part of thermal insulating material of tubular
shape and substantial diameter to reduce the flow of heat from said
heating unit to said coupling,
a control-delivery tube,
means shiftably mounting said control-delivery tube with one end in
said coupling and the other in communication with an end of said
discharge tube, and
means moving said control-delivery tube along its length so that it
can be shifted to actuate the valve mechanism of an aerosol
container attached to said coupling and conduct the effluent from
said container to said discharge tube.
30. The fog generator as set forth in claim 1 and wherein the
coupling of the supportable shell is of angular form with the
tubular operating stem of the control-delivery means extending
coaxially therethrough.
31. The fog generator as set forth in claim 11 and wherein the
coupling of the supportable shell is of angular form with the
tubular operating stem of the control-delivery means extending
coaxially therethrough.
32. The fog generator as set forth in claim 21, wherein the
coupling of the supportable shell is of angular form supporting the
discharge tube of the material processing means to project
laterally from the axis of the aerosol container, and wherein the
control-delivery tube extends coaxially through said coupling and
into the discharge tube.
33. The fog generating apparatus as set forth in claim 29, wherein
the coupling is of angular form supporting the discharge tube and
electrical heating unit to project laterally from the axis of the
aerosol container, and wherein the control-delivery tube is of
correspondingly angular form extending coaxially through said
coupling and moved by the last mentioned means on the axis of the
aerosol container to actuate the valve mechanism thereof.
Description
This invention relates to dispensing gaseous fogs of insecticide
and like chemicals. The primary purpose of such fogging guns or
generators is to obtain maximum effectiveness from the material
being dispensed and to convert mist or wet spray into an efficient
gaseous fog. The gaseous state of the material being dispensed is
obtained through the application of heat to the initially wet mist
that is liberated from an aerosol container. Since heat application
can be dangerous when charged aerosol containers are concerned, the
prior art guns and/or generators have had complicated protective
heat isolation means operating to separate the aerosol container
from the heat applicating means while subjecting only the
liberating mist to heat. To these ends the prior art devices
include intervening shields and intermediate heat transfer means,
and all of which are associated with supporting structure,
including handles, and which connect and relate the various
elements. For example, independent shields have been employed to
protectively embrace the aerosol container and heat generator and
they are independently operative and remotely positioned for safety
purposes; and independently operative heat absorption means have
been interposed between aerosol containers and misting nozzles
which are exposed to the heat applicator.
It is a general object of this invention to eliminate the
complexity of said prior art shields and intermediate heat transfer
means, all without impairing the safety of the device and to the
end that heat isolation with respect to the aerosol container is
maintained while subjecting the liberated mist to intense heat that
is efficiently localized so as to ensure the discharge of gaseous
fog, as distinct from otherwise wet mist.
An object of this invention is to provide a fogging generator of
the type hereinabove referred to and wherein spray processing means
in the form of a heat applicator is efficiently isolated from the
supply of gas under pressure. With the present invention there is
virtually no transfer of heat toward the aerosol container, yet
there is a close association thereof insofar as distance is
concerned.
It is an object of this invention to provide a heat isolating
association of elements wherein the structural supports prevent the
transfer of heat, being poor conductors of heat so as to limit
structural absorption; and wherein the structural supports so
dispose the elements of the device that natural convections
dissipate heat away from the aerosol container.
It is still another object of this invention to provide a fogging
generator having the features thus far referred to and wherein
reliable coupling to the aerosol container and its mist liberating
valve is effected by a depressible stem which is adapted to
transport fluid material to a remote point for its initial nozzling
into the surrounding atmosphere. Said initial nozzling is within
the confines of spray processing means wherein intense heat is
absorbed into the wet spray or mist and whereby expansion into a
rarefied gaseous state is effected, for subsequent dispersion and
intimate mixing into the surrounding atmosphere.
The various objects and features of this invention will be fully
understood from the following detailed description of the typical
preferred form and application thereof, throughout which
description reference is made to the accompanying drawings, in
which:
FIG. 1 is a partially sectioned elevation of the fogging generator
as it is combined with and involves an aerosol container.
FIG. 2 is an enlarged sectional view of the processing means
provided and of the control means which liberates material from the
aerosol container and transports the same directly into said
processing means.
FIG. 3 is an enlarged fragmentary sectional view illustrating the
chambered and sealed coupled engagement to the aerosol
container.
FIG. 4 illustrates angular adaptation of the fogging generator as
it is combined with an aerosol container.
The improved fogging generator herein disclosed is particularly
suited for the application of insecticide materials supplied from
an aerosol container A as a liquid under pressure. The container A
can vary in configuration and it comprises generally a vessel 10
closed by a valve means 11. A syphon tube 12 extends to the bottom
of the vessel 10 in order to provide for an erect discharge
positioning of the vessel, and the valve means 11 has a shallow
opening 13 in a cylindrical valve fitting 14 and wherein there is a
depressible element 15 adapted to be displaced for release of
liquid through the syphon tube 12 and from the vessel 10 for
liberation through the said opening 13. A typical arrangement of
such a valve means is shown and wherein liquid ejects from the
opening 13 at the top of the vessel 10 surrounded by the fitting
14. As shown, the valve fitting 14 is externally threaded for any
required coupling engagement and in this instance for mounting of
the aerosol container to the combined elements of the fogging
generator, all as hereinafter described.
The fogging generator is illustrated in its upright and normal
spraying position, as a "wand" and involves, generally, a frame B
for mounted engagement to the aerosol container A, a material
transporting and liberating control-delivery means C to displace
the valve means 11 and to remotely nozzle the material being
dispensed, and a spray processing means D to subject the nozzled
material to intense heat.
The frame B comprises the outer shell of the generator elements
that attach to the aerosol container A and is intended for direct
and convenient manual support for manipulation as circumstances may
require. The frame B connectably receives the aerosol container A
and supportably accommodates the other associated elements of the
device, namely the control-delivery means C and spray processing
means D. The frame B is vertically disposed with a threaded
coupling at its lower end for reception on and threaded attachment
to the valve fitting 14 of the container A. The valve fitting 14 is
usually of limited diameter as shown and is surrounded by larger
diameter portions of the container end. For example, such a
container is often filled through a larger diameter opening than
that of the valve fitting 14, in which case the said fitting is
carried by a closure 20 that is permanently crimped into the
container end and thereby establishing a reinforced encirclement 19
disposed in a plane normal to the axis of the container. The frame
B is cylindrical in form and of a diameter comparable to that of
the container A, of the frame B is characterized by upper and lower
walls 21 and 22 made of heat insulating material. The two walls 21
and 22 establishing a chamber within a tubular shell 23 that
extends therebetween, there being a coupling 24 extending from wall
22 to threadedly engage with the valve fitting 14 and to bear
against the reinforced encirclement 19. The cross sectional
configuration of the shell 23 and coupling 24 can vary as
circumstances require, conventional cylindrical cross sections
being shown.
In accordance with the preferred form of the invention the frame B
and its elements 21--24 are coaxially disposed with the axis of the
aerosol container A and its valve fitting 14, and characterized by
a "wand" configuration. That is, the completely assembled fogging
generator is normally disposed vertically in an erect position,
while it is manipulatable into any other desired position for
limited lengths of time as circumstances require. As shown, the
coupling 24 has a lower end face 25 that is normal to the axis and
upon which seats the reinforced encirclement 19 of the container A;
and the coupling 24 in internally threaded so as to draw the
aerosol container into seated engagement with the coupling. A
feature is the seal S that is provided between the frame B and
container A and which involves a gasket or compressible gland 26
that is carried within the threaded opening of the coupling 24 and
which is pressed between a seat 27 and the opposing end face of the
valve fitting 14. Both the seat 27 and gland 26 have a central
opening therethrough to slideably pass the operating stem of the
control-delivery means C, as later described.
The coupling 24 is an elongated tubular element having an inner
diameter wall 30 that opens into the chamber within the tubular
shell 23. Various forms of couplings can be provided and it is
preferred that the threaded portion of the coupling be made of
substantially hard metal establishing a durable nut, while the
remainder can be made of softer material. As shown, the lower wall
22 is made of plastic material with a central tubular and threaded
insert 31 that reinforces the wall 30 of the coupling.
The spray processing means D is a heat means adapted to radiate
intense heat into a confined predetermined area. Specifically, the
means D is characterized by a discharge tube 35 into which mist or
wet spray is liberated, and the area into which said intense heat
is radiated is the interior of the discharge tube 35. Accordingly,
the means D is a tubular radiator adapted to transfer heat into the
liquid globules passing therethrough. Various means can be used for
applying heat to radiate into the tube 35, preferably an electrical
means. To this end, the tube 35 is encased in a substantial body 36
of heavy cross-section whereby heat is retained therein, and the
body 36 is surrounded by an efficient heat insulating sleeve 37.
Thus, the escape of radiant heat is from the exposed inner diameter
wall 38 of the tube 35 that extends through the means D and which
opens at the forward and upper end thereof. One or more electrical
heat generating rods 39 are embedded in the body 36, and in an
electrical circuit 40 under control of a temperature sensitive
thermostat 41. By providing a heat radiating means of substantial
body, residual heat can be stored and subsequently radiated over
lengthy time periods. Thus, the fogging device is portable and is
operable after it has been disconnected from the initially
necessary power source. In practice, the discharge tube 35 is made
of copper or the like for its superior heat conductive properties,
while the body 36 is made of iron or the like having superior heat
retentive properties.
The spray processing means D hereinabove described is a cylindrical
element that slides into the shell 23 and thereby accommodated
between the upper and lower walls 21 and 22. The upper wall 21 has
a central bore 45 therethrough that passes the open discharge end
portion of the tube 35, which correspondingly projects from the
body 36. A feature of the invention is the reservation of a chamber
area within the shell 23, below the means D and above the lower
wall 22. This reserved area is established by a spacer 46 or the
like and is for the accommodation of the accessory elements of
device, including a power receptacle, a heat indicator light 47 and
the operable elements of the control means C. The thermostat 41 is
placed in contact with the body 36 and comprises a temperature
responsive switch that opens when the required heat range is
reached. The indicator light 47 is parallel in the electrical
circuit through the thermostat switch, said circuit being in series
through the heat generating rods 39.
The control-delivery means C is the feature of this invention which
correlates the functions of the elements that are combined, it
being unique that the lowermost receiving end of the discharge tube
35 is spaced and opened a substantial distance from the coupling 24
and connected valve fitting 14 of the aerosol container A from
which the material to be dispensed is liberated. Accordingly, a
small diameter tubular operating stem 50 is provided and which
enters the valve fitting 14 and proximately enters the discharge
tube 35, said stem being shiftably carried through the gland 26
where it is sealed. The control-delivery means C includes manually
operable means to shift the the operating stem 50 and for the
function of shifting the stem into engagement with the depressible
element 15 of the aerosol container. In the form illustrated, the
tubular operating stem 50 has an upwardly faced shoulder 51 and is
surrounded by a return spring 52, and there is a transversely
disposed lever 53 anchored to a fulcrum 54 on the wall 22 and which
extends through a window 55 to be manually engageable at the
exterior of the shell 23. The lever 53 is manually depressible and
has an opening therethrough to pass and so that it engages the
shoulder 51, compressing the spring 52 seated in the boss of the
wall 22. The lower end of the operating stem 50 is truncated or
suitably perforated for the lateral entry therein of the material
liberated into the confines of the valve fitting 14. The upper
terminal end of the operating stem 50 is restricted so as to form a
nozzle 56 from which the said liberated material is initially
discharged to atmospheric pressure within the tubular discharge
tube 35. Thus, the liberated material is permitted to expand within
the confines of the intensely heated discharge tube 35, said
expansion working hand in hand with the absorption of heat, and to
the end that the initially wet spray and/or mist is converted to a
gaseous mixture that expands upwardly while drawing air mixture
through the lower end of the tube 35 and from the vented chamber
within the shell 23.
From the foregoing, this improved fogging generator will be seen to
operate most efficiently in safely converting to gas liquid that is
liberated from an aerosol container as a spray or wet mist. The
conversion is to render the liquid thoroughly gaseous, and which is
most useful in the application of insecticides and like chemical
materials. It is significant that the liberated materials,
liberated into the confines of valve fitting 14, are transported
through a small diameter tubular stem 50 and subsequently expanded
at the nozzle 56 remote from the aerosol container A. Also, it is
at the said remote point of discharge into an atmospheric pressure
environment that intense heat is applied, there being no structural
heat conductive elements of any magnitude that would carry heat
toward the aerosol container. In actual practice, the movement of
heat is inherently upward by virtue of the normal upright
disposition of the "wand" -like device, there being a syphon effect
caused by the jet action of the mist nozzled upwardly into and
through the open ended tube 35, and all of which is enhanced by the
natural upward expansion of gases as they are exhausted into the
atmosphere. Further, there are no heat conductive contacts of the
heated body 36 with any part connected to the aerosol container A,
and as a result the said aerosol container remains unaffected by
the heat applicating means D which materially enhances the
effectiveness of the material that is liberated as a mist and
subsequently converted into a gaseous state through the application
of intense heat.
In FIG. 4 a modified combination of fogging generator and aerosol
container is shown, wherein the said generator is angularly
disposed to the axis of said container A. In this form the
operative elements of the control-delivery means C remain coaxial
with the axis of the aerosol container A, while the frame B
carrying the spray processing means D is angularly disposed to said
axis. The coupling 24' is an elongated tubular element of angular
configuration that opens into the chamber within the tubular shell
23. The operating stem 50' is correspondingly of angular
configuration and projects laterally into the discharge tube 35. In
place of the lever 53 within the shell 23 there is a guide 53'
fixedly secured to the fulcrum point 54, said guide 53' loosely
guiding the stem 50' so that its nozzle discharges centrally within
the tube 35. In this form, the above described lever 53 is replaced
by a slide 60 exposed at the side of the coupling 24', there being
a shoulder 51' on the stem 50', engaged by the slide to depress the
stem; and all of which is held away from the aerosol valve by means
of a return spring 52' and operable as hereinabove described. The
degree of angular arrangement can be selected as may be required,
the small amount of depression required to operate the aerosol
valve being inconsequential insofar as alignment of the stem 50'
and tube 35 is concerned.
Having described only the typical preferred forms and applications
of my invention, I do not wish to be limited or restricted to the
specific details herein set forth, but wish to reserve to myself
any modifications or variations that may appear to those skilled in
the art
* * * * *