U.S. patent number 3,891,127 [Application Number 05/421,725] was granted by the patent office on 1975-06-24 for material applying dispenser having screw actuated feed.
Invention is credited to Alberto Fernandez, Eduardo Quintero.
United States Patent |
3,891,127 |
Fernandez , et al. |
June 24, 1975 |
Material applying dispenser having screw actuated feed
Abstract
It is disclosed herein a novel construction for a device for
dispensing and applying paste material having a handle portion and
a brush head portion for portion-wise applying such paste material
from said brush head, wherein the handle portion is provided with a
hollow elongated storage chamber polygonal in inner cross sectional
area, said chamber having therein a worm screw for advancing
paste-material toward such brush head in a manually controlled way.
A shutoff is provided in the flow path toward the fiber-bearing
surface of the brush head for controlling the flow of paste
material from the aforecited storage chamber.
Inventors: |
Fernandez; Alberto (Bogota,
CO), Quintero; Eduardo (Bogota, CO) |
Family
ID: |
23671784 |
Appl.
No.: |
05/421,725 |
Filed: |
December 4, 1973 |
Current U.S.
Class: |
222/387; 401/175;
222/553; 222/390 |
Current CPC
Class: |
A46B
11/0027 (20130101); A46B 11/0079 (20130101) |
Current International
Class: |
A46B
11/00 (20060101); B67d 005/42 () |
Field of
Search: |
;222/387,390,553
;401/171-182 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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359,525 |
|
1938 |
|
IT |
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564,565 |
|
1957 |
|
IT |
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651,523 |
|
Oct 1928 |
|
FR |
|
Primary Examiner: Reeves; Robert B.
Assistant Examiner: Scherbel; David A.
Attorney, Agent or Firm: Browdy and Neimark
Claims
What I claim is:
1. The construction of a device for dispensing and applying paste
material, comprising:
a. a handle portion having a hollow chamber polygonal in
cross-sectional area axially arranged along said handle, said
chamber having a narrower axial cylindrical opening in its front
end so defining a circumferential shouldered portion on said
chamber, being it provided through said shoulder portion an angular
passage with a leg thereof rearwardly opening into said chamber and
with its other leg laterally opening toward said narrower
cylindrical opening;
b. a coupling member having a polygonal hub portion at its front
end, which coupling member is lodged and rotably retained within
said narrower cylindrical opening with said polygonal hub portion
protruding from the front end surface of said handle portion, an
angular passage being provided through said coupling member, with
said angular passage being formed with an axially directed leg and
the other leg thereof laterally opens at the same plane as does it
the laterally opening leg of said passage provided through said
shouldered portion;
c. a head portion for applying paste material having an axially
arranged passage therethrough, the underside of which head portion
is provided with a polygonal recess into which is push fitted said
polygonal hub in said coupler member for rotably coupling said head
portion on the front surface of said handle portion;
d. a worm screw axially housed within said polygonal
cross-sectional chamber, the rear end portion of said worm screw
being rotably supported through a central opening in said cap
member and with its exposed end being provided with an engaged
element preventing the backward sliding of said worm screw and
which allows the rotation thereof; and
e. a plunger member, having correspondingly polygonal perimeter,
being centrally and threadably mounted on said worm screw for
travelling therealong in running fit along the inner side walls of
said chamber, with the forward stroke of said plunger member being
limited by a stop means fixedly provided on the front end of said
screw.
Description
FIELD OF THE INVENTION
Broadly, the invention pertains to the field of the paste material
applicator devices and more particularly it relates to paste
dispensing means as those often used as toilet devices for applying
creams such as tooth brushes and shaving brushes, for instance.
It is an object of the present invention to provide paste material
dispensing means having incorporated as one unity both the means
containing the paste material to be dispensed and the brush head
for applying such material. Therefore the device according to the
invention affords the advantages for the user of having associate
in a single unity both the material and the means for applying the
same.
Thus, the device of the invention is particularly advantageous when
used in the form of a tooth brush, shaving brush or like devices.
The invention will be particularly described in connection with the
aforecited uses but it is to be understood that it is not limited
to the same.
SUMMARY OF THE INVENTION
The device according to the invention comprises a handle portion
attached to the head bearing fibrous material. The handle portion
is provided along its longitudinal axis with an elongated chamber
polygonal in cross-section, provided in its rear end with a screw
cap serving also for rotably supporting and guiding the stem of a
worm screw. The worm screw is rotably arranged coaxially with the
axis of the elongated chamber and passes through a movable
polygonal member having a perimeter so shaped and sized as to
slidably fit the inner cross-section of the elongated chamber.
Therefore, when rotating the worm screw, maintained longitudinally
fixed within the chamber, the polygonal member rotably mounted
thereon is prevented from rotating and will be driven along the
screw thus serving as a plunger for sweeping material toward the
chamber outlet opening. A length of the rear end of the worm stem
extends outwardly of the chamber through a circular opening
centrally arranged in the cap member. The free end of the outwardly
extended length of the worm stem is fixedly provided with a knob by
means of which the worm is manually rotated by the user. The
innermost end of the worm screw is provided with a stop means for
limiting the forward travel of the plunger or movable polygonal
member. The knob acts also to prevent longitudinal backward
displacement of the worm.
The forward end of the material storage chamber is in flow
communication with the outside surface bearing the fibrous material
of the head portion through a hollow passage for shutting off the
flow of the material when being dispensed.
With the above described novel construction of device for
dispensing paste material, the chamber arranged within the device
handle is charged with the paste material, and the polygonal member
or plunger is located toward the chamber rear end. A screw cap
which is provided with a central bore for passing therethrough the
rear end portion of the worm stem, is screwed on the thread
provided exteriorly or interiorly of the rear open end of said
chamber. With such arrangement when the worm screw is clock-wise
rotated the plunger member is forwardly driven on and along the
worm screw to drive paste material toward the opposed end. When the
flow relationship is established through the passage communicating
the outside surface bearing fibrous material with the forward end
of the storage chamber, the paste material is squeezed therethrough
and hence to the fibrous applicator.
In the foregoing it has been mentioned that the storage chamber is
polygonal in cross-section. This configuration avoids the free
slippage of the plunger member around the inner side wall of the
chamber thus allowing the plunger to travel along the worm screw.
It is to be noted, however, that the plunger slippage around the
chamber inner side wall may be prevented when using a circular
cross-section therefor, whenever longitudinal guiding ribs or slots
be arranged along the inner side wall of said chamber. Such an
arrangement will allow the plunger member be forwardly guided
prevented from rotating within the chamber. A square cross-section
is suitable but the hexagonal cross-section may be preferred for
the chamber.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention will now be described in detail in
connection with the accompanying drawings, in which:
FIG. 1 is a perspective longitudinal cross-sectional view along a
tooth brush embodying the novel construction of the invention;
FIG. 2 is a longitudinal cross-sectional view along the head of
tooth brush of FIG. 1;
FIG. 3 is a cross-section view taken along line a--a in FIG. 1,
looking in the direction of the arrow;
FIG. 4 is a cross-section view taken along line b--b, looking in
the direction of the arrow;
FIG. 5 is a broken-away, partially in section perspective view of a
shaving brush constructed according to the principles of the
present invention;
FIG. 6 is a perspective view showing a detail of the engagement of
the applying head onto its handle in the shaving brush of FIG.
5;
FIG. 7 is a cross-section view taken along line VII--VII in FIG. 6,
viewing in the direction of the arrows.
DETAILED DESCRIPTION OF THE DRAWINGS, INCLUDING PREFERRED
EMBODIMENTS
Referring now to FIGS. 1 to 4, the reference numeral 14 generally
shows a tooth brush handle integrally provided with a fiber-bearing
head 3. An elongated chamber 10 for storing tooth paste is
interiorly arranged along the handle 14, as shown in FIGS. 3 and 4.
Chamber 14 is illustrated in the drawing as having square
cross-section for the sake of simplicity in the drawing. Axially
housed within the chamber 14 is a worm screw 8 the rear end portion
of its smooth shaft is journaled on the central bore provided in
the screw cap 12. The rearmost portion of the stem of the worm
extends through the bore 12 outwardly from the chamber wherein is
fixedly provided with the knob 13 from which the screw 8 is
manually rotated. As hereinabove mentioned, in the embodiment
depicted the chamber 10 is square in cross section. Accordingly, in
the embodiment shown, a plunger member 9 of square perimeter, sized
so as to snugly fit within the chamber 10, is centrally and
threadably mounted on the worm screw 8 so as to travel therealong
when said screw is rotated. In this way, when the plunger 9 travels
toward the inner end of the chamber 10, its contents are forwardly
driven. The innermost end of the screw 8 is provided with of a stop
means 7 for limiting the stroke of the plunger member 9. The knob
13, for rotating the screw 8, by suitable means, not shown, acts
also to prevent the backward sliding of the screw 8. In the
embodiment of the invention illustrated in FIG. 1, the chamber 10
by its rear end communicates with a circular internally threaded
opening 11 suitable for threadably receiving the screw portion of
the screw cap 12 for thus closing the chamber 10. Of course, a cap
12 might be coupled to the handle 14 by means of a thread
exteriorly arranged on its rear end portion.
The front end of the chamber 10, as shown in FIGS. 1 and 2,
communicates with the elongated passage 5 of the sleeve 16 which in
turn is rotably and snugly lodged within the axial bore arranged
throughout the portion head 2 of the tooth brush. The exposed end
of the sleeve 16 is provided with a knob 1 through which rotation
can manually be applied to the sleeve 16; the end of the sleeve
protruding into the chamber 10 is fixedly provided with the
retaining means 6 which engages against the front end wall of the
chamber 10, for the purpose to prevent the sleeve 16 from sliding
out of its place.
The aforecited axial bore extending through the head 2 opens to the
surface bearing fibers 3 through the side opening 4. The side wall
of the sleeve 16 is provided with a bore 18 arranged so as to be
brought into register with the side opening 4 when the sleeve is
turned by means of the knob 1 in the required amount. With such
arrangement, when the bore 18 is put into register with the opening
4, flow path is established from the storage chamber 10, through
the passageway 5 in the sleeve 16, and then to the fiber-bearing
surface in the cleaning head 2.
With the closed chamber 10 charged with paste material, and the
plunger member 9 in position for starting driving paste material
from the rear end, when manually rotating the worm screw 8 in
clock-wise direction, said plunger 9 is forwardly advanced along
the screw thus driving the chamber contents to its front end, and
hence through passage 5, the registering openings 18 and 4 and
finally to the fibrous material 3. In this way the desired portion
of the chamber contents is applied in response to the rotating
motion the user applies on the knob 13, while the stream flow is
allowed, by turning the sleeve to delivery position by properly
acting on the knob 1. In FIGS. 1 and 2 the sleeve 2 is shown in
relationship of flow of paste material toward the cleaning
head.
With reference to FIG. 5 there is shown by the reference numeral 1'
the handle of a shaving brush or like dispensing device according
to another alternative construction embodying the principles of the
invention. A brush head 2', bearing fibers 3' for instance, is
operatively engaged by means of a coupler member 14' to the handle
1'. An elongated chamber 4', square in inner cross-sectional area
(FIG. 7), is centrally arranged within the handle 1'. Axially
housed within the chamber 4' is a worm screw 5', a rear smooth
portion 7' of which extends through a central bore 25 provided in
the cap 6', and said portion 7' has its outwardly protruding end
tightly fitted into the hole 26 provided in the knob 8'.
With further reference to FIG. 5, the square chamber 4' opens in
its rear end into a circular internally threaded opening 11'
suitable for threadably receiving the screw portion 12' of cap 8'
for thus closing the chamber 4' at its rear end. At its front end
the chamber 4' terminates in a narrower axial cylindrical opening
27 defining a circular shouldered portion 28 with said chamber 4'.
There is provided in the shoulder 28 an angular passage laterally
opening at 13' and downwardly opening at 24, such passage being
provided for the purpose to be described below.
The rear portion 7' of the worm screw 5' is loosely extended
through the bore 25 in the cap 6' so that said worm 5' can manually
be rotated from the knob 8' when acting so thereon. The knob 8' is
prevented from backward sliding away from the cap 6' by suitable
means, not shown.
A plunger member 9', of correspondingly square perimeter is so
sized as to slidably fit against the inner side walls of the
chamber 4'. The worm screw 5' threadably mounts the plunger member
9' so that this is movable around and along screw 5'. When screw 5'
is rotated in the assembly the plunger 9' will travel along chamber
4' mounted on said screw, so that in its forward stroke the plunger
sweeps the chamber contents toward the front end thereof. The
innermost end of screw 5' is provided with a stop means 10' for
limiting thereon the stroke of plunger 9'.
Still with reference to FIG. 5, a coupler member generally
illustrated at 14' is lodged within the front end of chamber 4'.
The coupler 14' has a cylindrical body from the lower end of which
extends a circumferencial bead 23 and a square hub 16' is provided
at its upper end. An angular passage laterally opening at 15' and
upwardly opening at 22 (FIGS. 5 and 6) is arranged within the
coupler member 14'. As shown in the detail of FIG. 6, a square
recess 17' is provided in the underside of the head 2' so sized as
to tightly receive the square hub 16' of the coupler member 14.
Centrally running through head 2' is arranged a passage opening at
19 on its fiber bearing surface and which opens at 18' in its
square recess 17'.
For assembling, the coupler 14' is passed through the opening 27
and the bead 23 engages against the underside of shoulder 28 and
its protruding square hub 16' is push fitted within the recess 17'
so that the brush head 2' is coupled on the upper end of the handle
1', so that said head 2' remains rotably seated on its place. In
the assembled device the side opening 15' of the passage within the
coupler 14' may be brought to register with the side opening 13' of
the passage arranged within the shoulder 28 of the handle 1', when
the head 2' is suitably rotated. Therefore a continuous flow path
can be established from chamber 4' through opening 24, the
registering openings 13' and 15', and from opening 22, through the
central passage running through head 2' for finally opening at 19
in the element for applying the contents. The hub 21 protruding
from the fiber-bearing surface may be used to extend therealong the
delivery opening into fibrous applying material.
Here again, with latter described arrangement, with the closed
chamber 4' charged with the material to be dispensed, and the
plunger member 9' in position for starting driving paste material
from the rear end, when manually rotating the worm screw 5' in
clock-wise direction, said plunger is forwardly advanced in running
fit along the inside side walls of the chamber 4' thus driving its
contents toward its front end and hence through the above described
angular passage when openings 13' and 15' are brought into
register, into the fibrous material 3'. In this way the desired
portion of the chamber contents is applied as a result of the
amount of rotation the user applies on the knob 8', while the
stream flow path is allowed by properly turning the head 2' to its
delivery position.
Preferred embodiments of the invention have hereinabove described.
Changes and modifications, however, may be made within the scope of
the invention as set forth in the appended claims.
* * * * *