U.S. patent number 3,850,183 [Application Number 05/333,631] was granted by the patent office on 1974-11-26 for lipstick and similar holder.
This patent grant is currently assigned to Ejectoret S.A.. Invention is credited to Ralph Gruska.
United States Patent |
3,850,183 |
Gruska |
November 26, 1974 |
LIPSTICK AND SIMILAR HOLDER
Abstract
A lipstick or like holder is largely of the conventional kind
having two relatively rotatable coaxial sleeves of plastics
material. The inner sleeve has an external operating knob and the
outer sleeve is fitted by force into a metallic reinforcing and/or
decorative tube. A godet for supporting the stick is slidable
axially in the inner sleeve and has at least one lug extending
through a slot in the inner sleeve and engaging a slot in the outer
sleeve, one slot being longitudinal and the other helicoidal. An
integral extension of the metallic sleeve projects beyond that end
of the outer sleeve adjacent to the operating knob. There are then
two opposed faces, one on the extension and the other on the inner
tube. Bosses on one or other of those faces exert a braking force
on the other face so as to prevent unwanted relative rotation of
the plastics sleeves. The improvement consists in disposing the
bosses irregularly with respect to the axis of the sleeves whereby
a smoother braking action is obtained.
Inventors: |
Gruska; Ralph (Saint Maur,
FR) |
Assignee: |
Ejectoret S.A. (Geneva,
CH)
|
Family
ID: |
9095134 |
Appl.
No.: |
05/333,631 |
Filed: |
February 20, 1973 |
Foreign Application Priority Data
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|
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|
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Mar 14, 1972 [FR] |
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72.08757 |
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Current U.S.
Class: |
401/78 |
Current CPC
Class: |
A45D
40/06 (20130101) |
Current International
Class: |
A45D
40/06 (20060101); A45d 040/26 () |
Field of
Search: |
;132/88.7,73,79.2,79
;401/75-78 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: McNeill; G. E.
Attorney, Agent or Firm: Dressler, Goldsmith, Clement &
Gordon, Ltd.
Claims
I claim:
1. A holder for a lipstick or a similar stick of pasty material,
comprising: a substantially cylindrical inner sleeve of plastic
material having a cylindrical sleeve portion defining a slot; an
outer sleeve of plastic material having a slot and rotatably
mounted on said inner sleeve; a stick holding cup provided with an
outer radially extending lug engaging said slots, one of said slots
being longitudinal and the other slot being helical; and a metallic
protecting tube force fitted over said outer sleeve, said inner
sleeve further comprising an operating knob and an intermediate
portion connecting said operating knob to said cylindrical sleeve
portion at one end of said sleeve portion, said connecting portion
being located beyond the corresponding end of said outer sleeve,
and a corresponding terminal portion of said metallic tube
surrounding said connecting portion to define a circumferential
clearance delimited by the outer surface of said connecting portion
and the inner surface of said terminal portion, one of said
surfaces delimiting said clearance having a plurality of unequally
spaced projections adapted for frictional engagement with the other
one of said clearance delimiting surfaces, said projections
providing within said circumferential clearance a plurality of
arcuate zones wherein said surfaces are in frictional engagement
with each other alternating with a plurality of zones of unequal
width wherein said surfaces are spaced from each other, and said
metallic tube being in frictional engagement with said inner sleeve
only at said spaced projections.
2. The holder of claim 1, wherein said unequally spaced projections
are outwardly projecting bosses provided on the peripheral surface
of said intermediate portion.
3. The holder of claim 1, wherein said circumferential clearance
has three projections, two of which are angularly spaced at an
angle of about 90 degrees, the third projection being located at an
angle of about 135 degrees with respect to each of the two other
projections.
4. The holder of claim 1, wherein said unequally spaced projections
are inwardly projecting bosses provided on said terminal portion of
said metallic tube.
Description
This invention relates to holders for housing sticks of pasty
material, such as lipsticks, paints, pomades, cosmetics,
pharmaceutical or veterinary products and the like, of the type
comprising two co-axial sleeves of moulded plastics material which
can be turned one relatively to the other, a godet for supporting
the stick, and movable axially in the inner sleeve, an external
operating knob fast with the inner sleeve, at least one lug on the
godet and extending through a slot in the inner sleeve, and engages
a slot in the outer sleeve, one of the slots being longitudinal and
the other helicoidal, a metallic reinforcing tube into which the
outer sleeve is fitted by force, and a removable cover closing the
whole. The tube may also have a decorative function.
The principal object of that earlier patent was to provide improved
braking means operative to reduce the likelihood of unwanted
relative rotational movement between the sleeves. With a view to
achieving that object the patent was characterized by the provision
of an extension to the metallic tube extending beyond that end of
the outer sleeve adjacent to the operating knob, two opposed
surface, one being afforded by the said extension and the other
being afforded by the inner sleeve, and at last onee boss or radial
projection on one of said opposed surfaces, the boss or bosses
exerting a braking force on the other of said opposed surfaces.
In the previous patent there are described embodiments in which the
said bosses for braking the relative rotation of the sleeves are
equidistant. But, it is quite difficult to obtain relatively thin
metal tubes which are and which remain truly round, or even
inexpensive components of plastics material which are not
non-circular, so that, when one sleeve is rotated relatively to the
other when the holder is in use, the aforementioned bosses
encounter irregularities in the cylindrical surface against which
they bear, which results in a variable resistance giving rise to a
disagreeable, jerky, rotational movement. The non-circularity
increases moreover in use and particularly during storage due to
the fact that the bosses uniformly spaced around the circumference
progressively accentuate the initial non-circularity.
The aim of the present invention is to improve the holders in
question with a view to improve the smoothness and regularity of
their operation.
To this end, according to the present invention there is provided a
holder of the type which is the subject of said previous patent,
characterized in that the spacing between the bosses is irregular
so that there is a significant improvement in the regularity of the
braking effect obtained.
In one preferred embodiment, there are three bosses, two of which
are separated by an arc of about 90.degree. and the third is
distant from each of the others by an arc of about 135.degree..
The invention will now be more particularly described with
reference to the accompanying drawings which show, by way of
non-limitative examples, two embodiments of holders for sticks of
pasty material improved in accordance with the invention.
In these drawings:
FIG. 1 is a longitudinal section along line 1--1 of FIG. 2 of a
first embodiment,
FIG. 2 is a transverse section taken along the line 2--2 of FIG. 1,
and
FIG. 3 is transverse section of a variant.
The holder for housing a stick of pasty material such as lipstick,
paint, pomade, cosmetic, pharmaceutical or veterinary product, or
the like, shown in FIGS. 4 and 5 comprises, as in the embodiments
described in the previous patent, a godet or support 1 for carrying
the stick of pasty material and mounted for longitudinal sliding
movement in an inner sleeve of plastics material 2 provided with a
cylindrical operating knob 4 and with intermediate portion 22
therebetween. To this end, the support 1 has, projecting from its
outer cylindrical surface, two diametrically opposed lugs, such as
3, which can slide in two longitudinal slots, such as 5, formed in
the cylindrical wall of the inner sleeve 2.
On this inner sleeve 2, can be rotated an outer sleeve 7 also of
plastics material and retained axially by two shoulders 11, 12 on
the inner sleeve. In the inner face of the cylindrical wall of the
outer sleeve 7 are formed two diametrically opposed helicoidal
slots 13, 14 in which the ends of the lugs 3 of the sliding support
are engaged.
On the outer sleeve 7 there is fitted, by force, a metallic
reinforcing tube 18 of which one end presents a base 19 with an
aperture as indicated at 21, for the passage of the stick of pasty
material. Finally, the whole is covered with a standard cover
which, for simplicity of illustration, is not shown.
In order to avoid the risk of the two sleeves 2 and 7 turning
relatively one to the other due to the effect of vibration while
the holder is closed and to avoid the risk of the end of the stick
of pasty material coming into contact with the bottom of the cover,
as well as to prevent the stick, when extended for use, re-entering
the holder on its own while in use, there is provided a braking
system which comprises, on the cylindrical surface of the annular
shoulder of the inner sleeve, as already provided in the
embodiments described in the previous patent, braking bosses 23
which bear frictionally with a certain pressure against the smooth
cylindrical inner surface of an extension of the outer metallic
tube 18 beyond that end of the outer sleeve 7 which is adjacent to
the operating knob 4. In the example illustrated, there are three
bosses 23A, 23B and 23C, which are not equidistant. In this example
the two bosses 23B and 23C are distant from one another by an arc
of about 90.degree., while the boss 23A is at a distance of about
135.degree. from each of the two bosses 23B and 23C.
Because the spaces which separate the three bosses are not of the
same length, faults of non-circularity of the metallic tube 18 are
not in practice felt when, during use, one of the sleeves is
rotated inside the other. The bosses bear uniformly against the
inner face of the metallic tube 18 which they deform resiliently
and uniformly in the course of rotation.
FIG. 3 shows in transverse section similar to that of FIG. 2, a
variant which only differs from the embodiment of FIGS. 1 and 2 in
the fact that the braking bosses 25A, 25B, 25C are formed by
longitudinal indentations in the tube 18, in place of projecting
from the inner sleeve; they bear against the continuous smooth
cylindrical surface of the shoulder 12 of the inner sleeve. Here
again, the unequal disposition of the bosses induces a permanent
elastic deformation of the tube 18 which overcomes the effects
which would be produced by a lack of circularity of the shoulder 12
of the inner sleeve or of the tube 18, during use.
Of course the invention is not limited to the embodiments described
and represented which are given by way of examples. Modifications
can be introduced without departing from the scope of the
invention.
* * * * *