U.S. patent number 3,579,898 [Application Number 04/792,723] was granted by the patent office on 1971-05-25 for bubble blowing device.
Invention is credited to Rolf Hein.
United States Patent |
3,579,898 |
Hein |
May 25, 1971 |
BUBBLE BLOWING DEVICE
Abstract
A compact bubble blowing device wherein a film-forming bubble
solution and the member from which the bubbles are blown, are
contained in one unit. The member is projected out of, and
retracted into, the solution through a singlehanded operation of
the device.
Inventors: |
Hein; Rolf (Tubingen,
DT) |
Family
ID: |
7163010 |
Appl.
No.: |
04/792,723 |
Filed: |
January 21, 1969 |
Foreign Application Priority Data
|
|
|
|
|
Jan 25, 1968 [DT] |
|
|
1,678,342 |
|
Current U.S.
Class: |
446/16 |
Current CPC
Class: |
A63H
33/28 (20130101); A47K 5/122 (20130101); B65D
85/00 (20130101) |
Current International
Class: |
A47K
5/122 (20060101); A47K 5/00 (20060101); A63H
33/28 (20060101); B65D 85/00 (20060101); A63h
033/28 () |
Field of
Search: |
;46/6,7,8 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Mancene; Louis G.
Assistant Examiner: Weinhold; D. L.
Claims
What I claim as new and desire to be protected by Letters Patent is
set forth in the appended claims:
1. A bubble blowing device comprising a housing having a wall
defining an open and an opposite closed end of said housing, at
least a portion of said wall being deformable, said housing being
adapted to contain a bubble-forming liquid; a cylinder having an
open end fluid-tightly joined to said open end of said housing and
extending from said open end into said housing spaced at least from
said deformable wall portion; a passage providing communication
between the interior of said housing and that of said cylinder and
being arranged in the region opposite the open end of said cylinder
so that liquid contained in said housing may pass into said
cylinder; a piston reciprocably arranged in said cylinder between a
retracted and an extended position, said piston having one end
facing said open end of said cylinder; an annular
liquid-withdrawing member fixed to said one end of said piston and
movable with the latter between said retracted position in which
said annular member dips into the liquid and said extended position
in which said member projects beyond the open ends of the cylinder
and the housing and the withdrawn liquid forms a film extending
across said annular member so that the film can be formed into a
bubble, whereby upon compression of said deformable wall portion of
said housing liquid in the latter will be forced to pass into the
cylinder to thereby move said piston from said retracted to said
extended position.
2. A device as defined in claim 1, wherein a portion of said
cylinder which is remote from said passage means is of enlarged
cross section and provides a reservoir for the liquid.
3. A device as defined in claim 2, wherein said portion of said
cylinder comprises an annular wall sealingly secured to the
adjoining portion of said housing.
4. A device as defined in claim 1, wherein said housing has an
inlet port and further comprising closure means for said port.
5. A device as defined in claim 1, further comprising stop means
for preventing movement of said piston beyond said extended
position.
6. A device as defined in claim 1, wherein said piston and said
cylinder are separated by a clearance.
7. A device as defined in claim 1, wherein said cylinder is of
rectangular cross section and said piston is of corresponding
rectangular cross section.
8. A device as defined in claim 1, further comprising a cover for
said housing, said cover being movable between an operative
position in which it conceals said piston, and an open position in
which it permits movement of said piston and said member to the
extended position.
9. A device as defined in claim 8, wherein said cover and said
member comprise portions which abut against each other in operative
position of said cover.
10. A device as defined in claim 1, wherein said member is provided
with capillary grooves for retention of liquid.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a bubble blowing device.
In known bubble blowing devices, for example, in the device
disclosed in German Pat. No. 1,137,367, a film-supporting member is
shown attached to the cover of the housing. With one hand the
operator has to remove the cover before he can use the device,
while he has to steady the housing with the other hand.
SUMMARY OF THE INVENTION
It is an object of the present invention to overcome the
disadvantage of bimanual operation, and to provide a liquid
withdrawing device, preferably a bubble blowing device, which can
be manipulated with one hand.
Another object is to provide a spillproof bubble blowing
device.
Yet another object is to provide a dripproof of bubble blowing
device.
The improved device comprises a piston-cylinder arrangement which
contains a supply of liquid, preferably a film-forming bubble
solution. A liquid withdrawing member is fixedly attached to the
piston in the cylinder, and is retained with the latter in the
interior of the cylinder when the device is not in use. The
cylinder is enclosed in a housing made from a preferably elastic
deformable material. In a presently preferred embodiment, the outer
rims of the cylinder and of the housing are contiguous and are
connected to one another by a leakproof seal.
A reservoir for the solution is formed in a widened section of the
cylinder surrounding its open end. At the opposite cylinder end a
passageway is provided permitting flow of the solution between the
housing and the cylinder. The cylinder also has an inlet port
through which solution is admitted, and a screw to close the inlet.
At about the halfway point of its length the cylinder is provided
with stop means attached to its inner wall and adapted to restrict
the piston stroke in the outward direction. A narrow interspace
between the inner cylinder wall and the circumferential surface of
the piston permits percolation of a preselected limited amount of
the bubble solution.
In a presently preferred embodiment the cylinder and the associated
piston have a rectangular cross section; the film-supporting member
is attached to that end of the piston which is spaced from the
cylinder base and has an annular shape; this member may be provided
with capillary grooves around its periphery.
When the bubble blowing device is not being operated the housing
may be closed off by a cover.
The novel features which are considered as characteristic for the
invention are set forth in particular in the appended claims. The
invention itself, however, both as to its construction and its
method of operation, together with additional objects and
advantages thereof, will be best understood from the following
description of specific embodiments when read in connection with
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a longitudinal vertical sectional view of the bubble
blowing device which embodies one form of the present
invention;
FIG. 2 is a plan view of the device with the cover removed;
FIG. 3 is a sectional view as seen in the direction of arrows from
the line 3-3 of FIG. 1;
FIG. 4 is an enlarged detail view of a part shown in FIG. 3;
FIG. 5 is a sectional view taken along the line 5-5 of FIG. 4;
FIG. 6 is a longitudinal vertical sectional view of the device with
the carrier in extended position; and
FIG. 7 shows a different film-supporting member.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
in FIG. 1 there is shown a housing 1, preferably made from an
elastic plastic material, for example, polyethylene, and having a
circular cylindrical shape. The exterior of the housing is provided
with a number of circumferential ribs and grooves 2 and 3
respectively, for a firm grip. Housing 1 contains a supply of
film-forming bubble solution 24 and has a cover 4 which can be
removably attached by threads or otherwise separably secured to the
open end of the housing when the device is not in use. A cylinder
5, made from a synthetic material, is located centrally in the
interior of the housing. The cylinder 5 has a passage 11 spaced
from its open upper end, for communication of the solution 24
between the housing 1 and the interior of the cylinder.
In a presently preferred embodiment, the major part of the cylinder
5 has a flat rectangular cross section and a cylindrical upper end
portion 23, having a bottom wall 7 with an opening 6. The chamber
23 with a circumferential wall 8 forms a reservoir for the bubble
solution 24. The wall 8 is contiguous with the adjoining portion 9
of the housing 1. At their outer rims facing the exterior the parts
8 and 9 are glued or welded together to form a leak-proof
joint.
A carrier 12, here shown as a piston, is reciprocable inside the
cylinder 5. Its rectangular cross section corresponds to that of
the cylinder, with an interspace 13, approximately 0.1 mm. wide,
provided between the outer piston surface and the inner cylinder
surface. A stop pin 15 attached to the wall of cylinder 6 at
approximately the halfway point of its length, passes through an
axial slit 14 in the piston 12 and limits the advance of the piston
beyond a preselected distance in the outward direction.
An annular film-supporting member 16 with a central blow-hole 17 is
fixedly attached to the upper end of the piston 12 and can be moved
by the piston outside of, and retracted into, the cylinder 5. On
its periphery, opposite the connection with the piston 12, the
member 16 is provided with an extension 18 abutting against the
inner surface of the cover 4 when the device is closed, to prevent
a dislocation of the piston 12 and the member 16 with respect to
the cylinder.
The surface of the member 16 includes a plurality of capillary
notches and grooves 19, respectively 26, whose shape is shown, for
example, in FIGS. 4 and 5, for adhesion of the solution when the
device is in operation. Another method of causing the solution 24
to adhere to the member 16 is by providing a layer thereon, made of
granular or spongelike synthetic, or by securing gudgeons and other
protuberances on the inner periphery of the member 16 facing the
blow hole 17. FIG. 7 shows yet another embodiment of the member 16
in the shape of a stylized animal, that is, a bear. The bear's ears
20 have the same function as extension 18 above.
To operate the device a supply of the film-forming bubble solution
24 (e.g., a soap solution) is poured into the housing 1 through an
opening 21 in the bottom wall 7 of the reservoir 23. When a
sufficient quantity has been admitted the opening 21 is closed by a
screw or plug 22. In another embodiment the solution may be poured
into the reservoir 23, to percolate through the interspace 13
between the piston 12 and the cylinder 5, and the passageway 11,
into the housing 1. In such embodiment the opening 21 and the screw
22 form respectively a vent and a venting screw.
When the required amount of fluid has been admitted into the
device, the housing 1 is manually compressed around its
circumference (arrows P) the latter being of a dimension which is
comfortably encircleable by the average sized hand of the operator.
The force exerted on the fluid 24 inside the housing 1 forces the
solution through the interspace 13 into the reservoir 23 and
simultaneously drives the upper portion of the piston 12 upward and
out through a distance which is limited by the force of the
compression and, mechanically, by the arrest of the piston,
respectively its axial slit 14, through the stop pin 15 in the
interior of the cylinder 5. Concurrently with the projection of the
piston 12 the attached film-supporting member 16 emerges outside of
the cylinder 5, so that the film extending across its blow-hole 16
may be blown into bubbles in the usual way. When the grip on the
housing 1 is relaxed and the compression ceases the housing
reassumes its original shape, and the piston 12, together with the
member 16, is withdrawn into the housing. The process can be
repeated as often as desired for refill of the member 16.
The advantages of the described device are not only that the device
is operable singlehandedly but that even in the open position
practically none of the bubble solution is spilled when the housing
is accidentally knocked over, since the bottom wall 7 of the
reservoir 23 is a barrier for leaks from the interior. Also, any
excess solution dripping off the member 16 during the operation is
automatically collected in the reservoir 23 and returned to the
interior of the housing 1.
While the invention has been illustrated and described as embodied
in a bubble blowing device, it is not intended to be limited to the
details shown, since various modifications and structural changes
may be made without departing in any way from the spirit of the
present invention.
The device described above can also serve, for example, as a means
for wetting a brush or the like, such as a brush for application of
nail polish. Such brush then replaces the member 16.
Without further analysis, the foregoing will so fully reveal the
gist of the present invention that others can by applying current
knowledge readily adapt it for various applications without
omitting features that, from the standpoint of prior art, fairly
constitute essential characteristics of the generic or specific
aspects of this invention.
* * * * *