U.S. patent number 3,769,640 [Application Number 05/125,478] was granted by the patent office on 1973-11-06 for dispenser.
This patent grant is currently assigned to Castronovo & Edwards, d.b.a. Glo-Bowl Products Co.. Invention is credited to Robert F. Castronovo.
United States Patent |
3,769,640 |
Castronovo |
November 6, 1973 |
**Please see images for:
( Certificate of Correction ) ** |
DISPENSER
Abstract
An automatic device of the form of a dispenser adapted to be
placed in the water tank of a toilet is provided. The dispenser
includes an extensible hanger strap which is conveniently stored in
folded condition in a chamber contained within the dispenser and
which may be extended for use and conformed over the top edge of a
toilet tank in order to suspend the dispenser in an operative
position within the water contained in the tank. The dispenser
includes a dispenser top which is snap-fitted to a dispenser bottom
in the form of a cup-shaped member adapted to contain therein a
cake of disinfecting and deodorizing cleaner. The normal flushing
action of the toilet automatically dispenses a metered amount of
dissolved cleaner into the water tank whereupon it mixes with the
tank water and is ejected therewith into the toilet bowl to perform
its disinfecting, deodoring, and cleaning function.
Inventors: |
Castronovo; Robert F. (Belmont,
CA) |
Assignee: |
Castronovo & Edwards, d.b.a.
Glo-Bowl Products Co. (San Francisco, CA)
|
Family
ID: |
22419898 |
Appl.
No.: |
05/125,478 |
Filed: |
March 18, 1971 |
Current U.S.
Class: |
4/227.6; 248/685;
4/222 |
Current CPC
Class: |
E03D
9/038 (20130101) |
Current International
Class: |
E03D
9/02 (20060101); E03D 9/03 (20060101); E03d
009/02 () |
Field of
Search: |
;4/227,228,231
;248/359,360,329,330,308 ;211/1.3 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
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|
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1,167 |
|
Mar 1900 |
|
GB |
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2,938 |
|
Dec 1889 |
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GB |
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26,051 |
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Mar 1906 |
|
GB |
|
6,502,895 |
|
Sep 1966 |
|
NL |
|
Primary Examiner: Hornsby; Harvey C.
Assistant Examiner: Massenberg; Donald B.
Claims
What is claimed is:
1. An automatic dispenser for metering a finite amount of dissolved
soluble substance into a tank of fluid containing said dispenser,
said dispenser comprising a body having an upper, top portion and a
lower, bottom portion, said lower portion having an open lower
chamber therein for containing said soluble substance, said upper
portion mounted on said lower portion so as to close said lower
chamber, said upper portion having a chamber means therein,
fluid-level responsive means for automatically metering said finite
amount of dissolved soluble substance defined by the volume of said
chamber means from said chamber means to the exterior of said body
in response to a change in fluid level of the fluid medium within
which the dispenser is used, and hanger means comprising an
elongated hanger strap of thin, flexible material which retains a
shape to which it may be deformed, thereby enabling said hanger
strap to be conformed over a support structure, on said tank to
support said body, a storage chamber carried by the upper portion
of said body, said hanger strap chamber, stored substantially
within said storage chamber said storage chamber comprising a means
for fastening one end of said hanger strap to said body, the other
end of which hanger strap is extendible from said storage chamber
to support said body in its operative position within said fluid
medium.
2. The invention of claim 1 wherein the hanger strap is folded
back-and-forth upon itself in serpentine fashion so as to be
contained substantially within said storage chamber.
3. The invention of claim 1 wherein said hanger strap comprises an
elongated strip of plastic material having at least one deformable
metal wire covered with plastic material and secured thereto in its
elongated direction.
4. The invention of claim 1 wherein said storage chamber means
comprises a bottom wall and wherein said means for fastening said
hanger means comprises a plurality of slots through said bottom
wall.
5. The invention of claim 1 wherein said storage chamber further
comprises an aperture means through which said one end of said
hanger strap may be extended and further including a removable
cover means for obturating said aperture means.
6. The invention of claim 5 wherein said aperture means comprises a
generally rectangular slot defining a pair of lateral side edges
and wherein said cover means comprises a generally rectangular
cover defining a pair of lateral side edges, and wherein the
lateral side edges of said slot and said cover are dovetailed so as
to enable said cover to be slid away from its position obturating
said aperture and allow said hanger strap to be extended from said
storage chamber.
7. The invention of claim 6 further including indicia on said cover
to indicate the direction in which said cover is to be slid to
expose said hanger strap and flange means on said cover to
facilitate movement thereof.
8. An automatic dispenser for metering a finite amount of a
dissolved soluble substance into a tank of fluid containing said
dispenser, said dispenser comprising a body having an open chamber
means therein for containing said dissolved soluble substance,
fluid-level responsive means for automatically metering said finite
amount of dissolved soluble substance defined by the volume of said
chamber means from said chamber means to the exterior of said body
in response to a change in fluid level of the medium within which
the dispenser is used, and wherein said fluid-level responsive
means comprises at least one top aperture and at least one bottom
aperture which are vertically spaced from each other and which
apertures fluidly communicate a chamber defined by said chamber
means with the exterior of said body, a storage chamber carried by
the upper portion of said body, and hanger means being stored
substantially within said storage chamber which hanger means having
one end thereof affixed to said body and the other end thereof
extendible from said storage chamber to support said body in its
operative position within said fluid medium.
9. The invention of claim 8 wherein said body comprises a generally
cylindrical dispenser top having a closed end in the form of a top
wall and an open end, said dispenser top defining said chamber,
said top aperture being located in said top wall, said open end of
said dispenser having a radial flange, said bottom aperture being
located in said radial flange, a dispenser bottom of generally
cylindrical configuration having a closed end and an open end so as
to define a chamber for receiving a cake of soluble substance
therein, and means sealingly engaging said top and bottom of said
dispenser at their open ends whereby said chamber and said cake
receiving chamber are in fluid communication.
Description
BACKGROUND OF THE INVENTION
This invention relates to an automatic device for dispensing a
metered amount of disinfecting and deodorizing cleaner into a
toilet bowl. More particularly, this invention is directed to a
dispenser which dispenses a metered amount of cleaner as a direct
result of the normal flushing of a toilet in which the dispenser is
operatively installed.
The problem of toilet bowl sanitation has been a problem since the
invention of the flush toilet. Early attempts at sanitation relied
upon manual methods of cleaning. In addition to being a most odious
chore, it required the expenditure of a considerable amount of
human time and labor. This gave rise to the later advent of the
automatic toilet-bowl cleaning device.
Currently, there are many such automatic toilet-bowl cleaning
devices on the market. However, these devices have proved to be
lacking in many respects.
One such device consists of a container of liquid cleaner having a
float valve which is operatively placed in the water tank of a
conventional toilet. The float valve which is actuated by the
normal flushing of the toilet consists of a rather complicated
structure which is relatively costly to produce.
More recently, devices have appeared which utilize water-soluble
cakes of cleaner. These devices are placed either in or at some
level within the water tank. Typically, the cake of cleaner is
contained within a container having one or more apertures therein.
The basic problem with these devices is that the cake of cleaner
material will dissolve to the limit of solubility of the entire
amount of water in the tank. Since this is typically a volumetric
quantity in the order of several gallons in the conventional
toilet, too great an amount of cleaner is discharged during the
normal flushing of the toilet. This is both costly and
wasteful.
If the container apertures are made smaller to inhibit the
dissolving process, too little cleaner will be discharged since
there is no positive means for discharging the solution from the
container.
In addition, the hanging straps provided on these devices tend to
be too complicated and, therefore, costly to construct as well as
lacking the necessary adjustability to accommodate different water
levels commonly encountered with different toilets. This latter
disability is especially severe in view of the fact that proper
operation of the devices requires proper positioning in the water
tank.
OBJECTS OF THE INVENTION
It is, therefore, an object of this invention to provide a
dispenser for automatically metering a dissolved substance.
It is also an object of this invention to provide a dispenser for
automatically metering a dissolved substance into a body of fluid
in response to the change in the level of the body of fluid.
It is a further object of this invention to provide an automatic
dispenser for metering the finite and reproducible amount of
dissolved soluble substance into a tank of fluid containing the
dispenser, which dispenser has no moving parts.
It is a further object of this invention to provide an automatic
toilet-bowl dispenser which meters a reproducible volume of
disinfecting and deodorizing cleaner into the water tank of a
toilet in response to the normal flushing action of the toilet.
It is a further object of this invention to provide a toilet bowl
dispenser having an improved hanger means.
It is a still further object of this invention to provide a
toilet-bowl dispenser having an improved hanger means which may be
conveniently stored within the dispenser and thereafter extended
for use.
It is a still further object of this invention to provide a
toilet-bowl dispenser having a hanger strap which is fully
adjustable to suspend the dispenser at any level in the water tank
of the toilet.
Other objects and advantages of the present invention will become
apparent from the following description and claims and as
illustrated in the accompanying drawing, which, by way of
illustration only, shows a preferred embodiment of the present
invention and the principles of operation thereof. It is to be
understood that the scope of the invention is not to be limited
thereto, but is to be defined by the scope of the appended
claims.
It should be further understood that while this discussion speaks
in terms of a toilet-bowl dispenser, the dispenser of this
invention could be used for dispensing any soluble substance into a
fluid medium.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a top-quarter, overall, isometric view of the dispenser
of this invention;
FIG. 2 is an elevation view of the dispenser in its operative,
water tank environment;
FIG. 3 is a top plan view of the dispenser of this invention with
the hanger strap removed and the sliding cover partially cut away,
for the purpose of clarity;
FIG. 4 is a partial side elevational view in partial cross section
of the dispenser of this invention rotated 90.degree. from the
direction of viewing of FIG. 2;
FIG. 5 is a cross-sectional view of the hanger strap of FIG. 2
taken in direction 5--5.
DETAILED DESCRIPTION OF THE DRAWING
Referring to FIGS. 1 and 2, there is shown generally at 10 an
automatic dispenser embodying the subject invention. The dispenser
comprises a dispenser top 12 which is snap-fitted to a dispenser
bottom 14. The dispenser may be conveniently made of any flexible
material such as polyethylene plastic. Adapted to be contained with
dispenser bottom 14 is a cake of soluble substance 16. This soluble
substance may be a cake of cleaner comprising chemicals which
effect cleaning, disinfecting, deodorizing, and even coloring of
the toilet-bowl water. These cakes of cleaner are commercially
available and are typically colored blue so as to produce a
pleasing blue tint to the toilet-bowl water. The blue tint also
serves the useful purpose of indicating when refilling of the
dispenser is required by the absence of such tint in the
toilet-bowl water.
In the alternative, cake 16 might be replaced with a cake of
soluble cleaner substance which may be cast into a disposable cup,
which cup may be itself inserted into dispenser 14 or made of such
size as to replace dispenser bottom 14. In this case, dispenser
bottom 14 would not be used.
Dispenser bottom 14 is a cup-shaped container having an open and a
closed end. Dispenser bottom 14 is conveniently shown to be of
generally cylindrical, frustoconical configuration having a larger
diameter end 18 and a smaller diameter end 20. In this form, the
dispenser bottom defines a longitudinal central axis.
Circumferentially located around the larger diameter end is a
radial flange 22 which is radially outwardly directed to define
outer diameter.
Dispenser top 12 is also in the form of a generally cylindrical
body having an open and a closed end. The dispenser top has a
cylinder portion 24 which also defines a longitudinal axis. A
circumferential radial flange 26 extends radially outwardly from
the bottom end of the dispenser top. Depending from the
peripherally outer-most portion of the radial flange 26 is a
generally axially-directed flange 28. At the axially-depending
extremity of flange 28 is a radially-inwardly directed peripheral
flange 30, which flange defines an inner diameter. The inner
diameter of flange 30 is slightly less than the outer diameter of
flange 22 such that deformation of flange 28 and/or flanges 22 and
30 is required to snap-fit the dispenser bottom 14 into operative
sealing engagement with dispenser top 12 in the circumferential
groove 32 defined by flanges 28 and 30.
In this position, the open end of dispenser top 12 is in
communication with the open end of dispenser bottom 14. As best
seen in FIG. 4, the top end dispenser top 12 is closed by top wall
34 so as to define a measured volume 36 by said top wall and
cylinder portion 24. Centrally disposed in top wall 34 is an
opening or aperture means in the form of an elongated slot 38
having a sliding cover 40 with a raised flange 42 at one end for
movement thereof. Sliding cover 40 is of generally rectangular
shape having the general configuration of elongated slot 38. That
is to say, cover ends 44 are semicircular in shape and the lateral
side edges 46 are dovetailed to correspond with the lateral side
edges 48 of slot 38.
Axially depending into chamber 36 are a pair of spaced, transverse
side walls 50 which span the internal distance of cylinder 24 in
chord-like fashion and which side walls are bridged by a bottom
wall 52 which similarly spans the cylinder distance. Walls 50 and
52 combine with cover 40 to define a storage chamber 54.
As best seen in FIG. 3, three transverse slots 56, in the form of
openings through the bottom wall 52, are provided for a purpose to
be hereinafter described. Turning now to FIG. 2, a hanger strap 58
is threaded through one of the two radially outer-most slots 56 and
the end thereof brought up through the central-most slot 56 and is
crimped over as shown in parallel relation abutting the bottom wall
52. Hanger strap 58' denotes how the hanger strap may be folded
back upon itself in serpentine fashion for complete storage in
chamber 54.
The hanger strap may be made of any flexible material which will
hold its shape upon being bent to conform to an object. FIG. 5
shows in cross section a strap especially suitable for the purpose.
This strap is made from a pair of metal wires 60 which are
longitudinally fixed to a thin strip of flexible material such as
plastic by placing such wires adjacent the surface of the strip and
dipping the combination into liquid plastic and allowing the liquid
plastic to then harden. An integral structure is thus produced
which effectively coats the wires and thereby prevents contact with
water which might otherwise produce corrosion, etc.
The wire may be of any flexible, deformable metal such as steel, or
copper wherein the yield point may be easily exceeded by
manipulation such that the wire conforms to and retains the
deformed shape.
The operation of the device is as follows, referring to FIG. 1.
Sliding cover 40 is slid in the direction of raised indicia 64 by
means of flange 42 to give access to the hanger strap contained
within the dispenser. The end of the hanger strap is gripped and
pulled from its folded to an elongated condition as shown in
phantom.
Referring now to FIG. 2, the sliding cover 40 is slid back until it
contacts hanger strap 58. The dispenser 10 is then placed within
tank 66 such that the entire unit is submerged in fluid which, in
the case of a toilet, would be water. The maximum water level in
the tank 68 is separated from the minimum water level after
flushing 70 by distance D, as best seen in FIG. 4. While the top
wall 34 of the dispenser may be placed even with the maximum water
level 68, it may also be placed beneath that water level and still
result in operation of the device. Hanger strap 58 is then bent to
conform to the toilet tank top edge 72, upon immersion of the
dispenser 10.
As best seen in FIG. 4, a plurality of apertures are located in the
dispenser top for entry of water. A pair of top apertures 74 are
located in top wall 34 while a pair of bottom apertures 76 are
located in radial flange 26. As seen in FIG. 3, these apertures may
be conveniently located in radial alignment on opposite sides of
the central axis of the dispenser.
Upon immersion, water flows into chambers 36, 54 and 78, the latter
being the chamber defined by dispenser bottom 14. The soluble
substance 16 in the form of a cake of cleaner thereupon begins to
dissolve into the water which surrounds and contacts it. The
soluble cleaner substance will continue to dissolve until the limit
of solubility of the water within the dispenser 10 is reached. Upon
reaching this saturation limit, further dissolving of the soluble
substance will be arrested.
It may be noted that while chambers 36, 54 and 78 do remain open to
the surrounding water in the tank by means of apertures 74 and 76,
their small size precludes any appreciable amount of cleaner
solution being transferred to the tank water. In addition, the
relatively small size of slots 56 as well as their almost complete
obturation by the hanger strap passing therethrough, effectively
preclude any appreciable amount of cleaner solution being
transferred into chamber 54 and thence to the tank water. In fact,
sliding cover 40 may be discarded prior to operative installation
of the dispenser and not inhibit the operation thereof.
When the toilet is flushed, the water level in the tank
conventionally recedes from its maximum at 68 to its minimum at 70.
During this process, air enters apertures 74 and a fluid volume of
cleaner in water solution will flow out of the dispenser through
apertures 76 and into the water tank where it is mixed with the
tank water and ejected into the toilet bowl during the flushing
process. The location of apertures 76 on the radial flange 26
produces a flow path somewhat as shown by the arrows. The same
amount of soluble substance or cleaner in solution will be metered
each time due to the fact that only a volume of fluid defined by
chamber 36 including that in chamber 54 through slots 56 will be
expelled by wellknown hydraulic principles. This volume is defined
by the vertical separation of apertures 74 and 76 by means of
distance d. Upon completion of the cycle, a new cycle begins as the
water level rises from a minimum to the maximum through the
distance D and the dispenser is again filled through the
apertures.
Upon exhaustion of the cake of cleaner, the dispenser may be
removed from its operative position in the tank and a new cake
inserted. In the alternative, if disposable dispenser bottoms are
used, empty dispenser bottoms would be replaced by one containing a
new cake of cleaner.
It is to be understood that the foregoing description is merely
illustrative of a preferred embodiment of the Applicant's
invention, and that the scope of the invention is not to be limited
thereto, but is to be determined by the scope of the appended
claims.
* * * * *