U.S. patent number 3,766,590 [Application Number 05/198,636] was granted by the patent office on 1973-10-23 for brush with set-in brushing fixture.
This patent grant is currently assigned to Celluloid S.A.. Invention is credited to Jean Louis Wachtel.
United States Patent |
3,766,590 |
Wachtel |
October 23, 1973 |
BRUSH WITH SET-IN BRUSHING FIXTURE
Abstract
The brush comprises a rigid support, a brushing fixture formed
essentially of a bulging pad of resiliently deformable material, a
retaining ring surrounding the pad and adapted to be engaged into
the said support, said ring being provided with an external
peripheral rib co-operating with an internal peripheral slot of the
said support and rigid sustaining means upon which the peripheral
edge of the pad bears when the said ring is engaged into the said
support.
Inventors: |
Wachtel; Jean Louis (Selestat,
FR) |
Assignee: |
Celluloid S.A. (Selestat,
FR)
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Family
ID: |
9064863 |
Appl.
No.: |
05/198,636 |
Filed: |
November 15, 1971 |
Foreign Application Priority Data
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Nov 27, 1970 [FR] |
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7042749 |
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Current U.S.
Class: |
15/186 |
Current CPC
Class: |
A46B
7/00 (20130101) |
Current International
Class: |
A46B
7/00 (20060101); A46b 003/20 () |
Field of
Search: |
;15/186,187,188,176,171
;350/67,308,309 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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459,205 |
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Sep 1950 |
|
IT |
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508,462 |
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Jun 1955 |
|
IT |
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Primary Examiner: Feldman; Peter
Claims
I claim:
1. A brush comprising a rigid support having a hollow portion
comprising a bottom wall and a flange surrounding said hollow
portion, said flange having an inner face substantially at right
angles with said bottom wall and an internal peripheral slot in
said inner face, and a separate brushing fixture fitted to said
support, said brushing fixture comprising (a) a bulging pad of
resiliently deformable material in which are rooted brushing
elements and having a peripheral edge, (b) a retaining ring of
semi-rigid material surrounding said pad and having an external
peripheral rib, and (c) a rigid plate having an external edge
outline corresponding to that of said pad, said brushing fixture
having the peripheral edge of its bulging pad confined between said
retaining ring and said external edge of said rigid plate with said
external peripheral rib of said retaining ring of the brush fixture
received in said internal peripheral slot in the inner face of the
support flange of said rigid support and said retaining ring and
said rigid plate in said hollow portion, the bottom wall of the
latter seating said rigid plate, said brushing fixture being
manually fitted to and separated from said rigid support by
cooperating engagement and disengagement of said peripheral rib
with said peripheral slot incident to movement of the brushing
fixture with its rigid plate into engagement with said bottom
wall.
2. A brush according to claim 1, wherein said resiliently
deformable material is selected from the group consisting of
natural and synthetic elastomers.
3. A brush according to claim 1, wherein said semi-rigid material
is a synthetic resin.
Description
The present invention relates generally to brushes such as
hair-brushes, clothes-brushes or the like, comprising a rigid
support and a brushing fixture secured to the said support and
formed essentially of a bulging pad of resiliently deformable
material in which are rooted pins, horsehair or the like. In the
presently known brushes of this type, the two elements constituting
the brush are generally assembled by sticking the edge of the pad
to the support. The stability of such an assembly is rather poor,
and the strain and deformations to which the pad is subjected when
the brush is being used, rapidly cause the pad to come unstuck.
Moreover, such an assembly does not withstand heat, for the glue
melts at a relatively low temperature.
According to the invention, the pad and the support are assembled
by means of a retaining ring surrounding the said pad and set or
embedded in the said support, and the deformation of the pad is
limited by means of rigid element on which its peripheral edge
takes its bearing when the pad is assembled to the support through
the medium of the said ring.
The invention also has for its object a brush comprising a
retaining ring surrounding the pad and adapted to be placed in the
said support, characterized in that the said ring is provided with
an outer peripheral rib co-operating with an inner peripheral slot
of the support, and that, in addition, rigid sustaining means are
provided, upon which the peripheral edge of the pad takes its
bearing when the ring is placed in the support.
It is thus understood that, owing to the use of the complementary
locking means provided both on the pad retaining ring and on the
support, the invention ensures a highly reliable assembly capable
of withstanding considerable strain. Moreover, owing to the fact
that the assembly is performed by purely mechanical means instead
of sticking, it is capable of withstanding relatively high
temperatures.
In addition, the brush according to the invention has an extremely
simple structure and is extremely simple to assemble, thus enabling
its manufacturing cost to be considerably reduced.
According to another feature of the invention, the said rigid
sustaining means are constituted by a plate whose outline
corresponds to that of the pad and which is set in the latter.
Other features and advantages of the invention will appear more
clearly from the following description.
In the appended drawings given solely by way of example :
FIG. 1 is an exploded elevational view of a brushing fixture
according to the invention, adapted to be secured to a brush
support and each of the three elements of which appears partially
in section ;
FIG. 2 is an elevational view, partially in section, of a brush
according to the invention, formed by the support and the brushing
fixture of FIG. 1 ;
FIG. 3 is a partial sectional view of a brush according to another
form of embodiment of the invention.
According to the form of embodiment illustrated in FIGS. 1 and 2,
the brush according to the invention is constituted by a rigid
support 1 made from any material, for instance moulded synthetic
resin, the said support comprising a hollow portion or back wall 2
adapted to receive the brushing fixture and a solid handle 3. The
hollow portion or back wall 2 adapted to receive the brushing
fixture is generally in the shape of a pan comprising a bottom wall
4 and a flange 5 provided on its inner face with a peripheral slot
6 which is either machined or moulded in the said flange.
The brushing fixture is constituted essentially by a bulging member
or pad 7 made from a resiliently deformable material such as a
synthetic or natural elastomer and obtained by way of pressure
moulding. In the said pad are rooted brushing elements which, in
the case illustrated, are constituted by metal pins 8, but which
may also consist of nylon horsehair, boar-hair or the like. The
lower portion of the pad 7 is provided with a peripheral flange or
rim 7a.
The brushing fixture also comprises a ring 9, the outline of which
corresponds to that of the pad 7 and the back wall 2 of the support
and which is provided with an outer peripheral rib 10 adapted to be
engaged into the slot 6 of the back wall 2. The inner diameter of
the upper portion of the ring 9 is much smaller than that of its
lower portion, so as to form an oblique inner shoulder 11 serving
to retain the pad on the support, as will be explained below. The
ring 9 is made from a semi-rigid material such as synthetic resin
and is obtained by way of injection moulding. Such a moulding
allows a sufficient accuracy of the rib 10 to enable it to be
readily set or embedded into the slot 6 of the back wall 2.
The brushing fixture also comprises a rigid plate 12 whose outline
corresponds to that of the pad and is adapted to be fitted into the
said pad, the edge 12a of the said plate coming into contact with
the inner face of the peripheral flange or rim 7a of the pad.
The brushing fixture is assembled to the support in the following
manner : when the ring 9 is fitted onto the pad 7, the shoulder 11
bears upon the upper peripheral portion of the pad, and then the
plate 12 is fitted into the hollow portion of the pad so that its
edge 12a comes into contact with the inner face of the flange or
rim 7a of the said pad, the assembly thus formed is driven into the
back wall 2 by exerting a finger pressure on the ring 9 until the
latter is sufficiently deeply inserted in the back wall to enable
the rib 10 to be set in the slot 6, the flange 7a of the pad thus
being confined between the shoulder 11 of the ring 9 and the edge
12a of the plate 12. The brushing fixture is thus firmly secured to
the support without using any sticking means and as a result of an
operation which is extremely easy to carry out without using any
tool.
According to the form of embodiment illustrated in FIG. 3, wherein
the same reference digits designate the same elements as in FIGS. 1
and 2, the bottom wall 4 of the back 2 is provided with a
projecting partition 4 forming with the flange 5 of the said bottom
wall a groove 15 into which is engaged the peripheral flange of the
pad 7.
In this second form of embodiment the brush is assembled as
follows.
As in the previous case, the ring 9 is placed on the pad 7 and then
the assembly constituted by the said ring and the said pad is
engaged into the back 2 of the support, the peripheral edge 7a of
the pad 7 thus penetrates into the groove 15 and a pressure is
exerted on the ring until the rib 10 engages into the slot 6, the
flange 7a thus bearing upon the partition 14.
Of course, the invention is by no means limited to the forms of
embodiment described and illustrated, which have been given by way
of example only. In particular, it comprises all the means
constituting technical equivalents to the means described as well
as their combinations, should the latter be carried out according
to the spirit of the invention.
* * * * *