US3308939A

US3308939A - Plastic lipstick holder

Info

Publication number: US3308939A
Application number: US391671A
Authority: US
Inventors: Sakalys Stanley
Original assignee: BRIER Manufacturing CO
Current assignee: BRIER Manufacturing CO
Priority date: 1964-08-24
Filing date: 1964-08-24
Publication date: 1967-03-14
Anticipated expiration: 1984-03-14
Also published as: DE1230530B; GB1088649A; FR1501633A; BE690362A

Description

March 14, 1967 s. SAKALYS 3,308,939

PLASTIC LIPSTICK HOLDER Filed Aug. 24, 1964 3 Sheets-Sheet l INVEN STANLEY SAKA 062152, mm, M221 %AQ.

ATTORNEYS March M, 1967 s. SAKALYS PLASTIC LIPSTICK HOLDER 3 Sheets-Sheet 2 Filed Aug. 24, 1964 FIGB INVENTOR.

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STANLEY SAKALYS Q o /iz mfl W222 ywmda ATTORNEYS Mmmh 14, 1967 SAKALYS PLASTIC LIPSTICK HOLDER 3 Sheets-Sheet 5 Filed Aug. 24, 1964 I N VE NTOR,

STANLEY SAKALYS BY 982%, %W;adaz, fimil 5' W/imfi ATTORNEYS United States Patent 08,939 PLASTIC LIPSTICK HOLDER Stanley Sakalys, Providence, R.I., assignor to Brier Manufacturing Company, Providence, R.I., a corporation of Rhode Island Filed Aug. 24, 1964, Ser. No. 391,671 12 Claims. (Cl. 206-56) The present invention relates to an improved inexpensive, plastic lipstick holder.

Conventional lipstick holders comprise a pair of concentric sleeves, one of which is a cam sleeve having a spiral cam slot and the other of which is a keyway sleeve having a straight longitudinal keyway slot, and a cylindrical lipstick carrier received within the sleeves and having a lug extending through the two slots so that rotation of one sleeve with respect to the other propels the carrier axially within the sleeve to axially withdraw the lipstick from, and retract it into, the open tops of the sleeves. A cap is provided over the sleeves when the lipstick is retracted.

Conventional lipstick holders of metal and plastic have certain disadvantages.

One disadvantage is that in order to prevent the lipstick from being inadvertently forced back into the sleeves by axial pressure at the upper end thereof when the lipstick is partially or wholly withdrawn from the sleeves, for example by application to the lips, a snug friction fit is provided at all times between the two sleeves. This has the disadvantages of increasing wearing of the parts and requiring considerable effort to r-otate the sleeves with respect to each other in order to move the lipstick into and out of the sleeves. On the other hand, where such a friction fit it not used the partially or wholly withdrawn lipstick may be inadvertently forced back into the sleeve when being used and the lipstick carrier tends to rattle in the sleeves. Accordingly, it is an object of the present invention to provide an inexpensive plastic lipstick holder in which the lipstick can be withdrawn and retracted from and into the sleeves with a minimum of effort but in which the partially or wholly withdrawn lipstick, neverthelss, cannot be inadvertently pushed back into the holder regardless of the axial position of the carrier in the sleeves and the carrier does not rattle in the sleeves. This is achieved by reducing substantially the normal frictional contact between the sleeves but providing an arrangement in which friction of large and increasing magnitude is instantaneously applied between the sleeves in response to an axial force on the end of the partially withdrawn lipstick to thereby prevent retraction of the lipstick.

Another disadvantage of conventional lipstick holders is that when the lipstick is withdrawn from the holder to the limit of its outward movement, the carrier carrying the lipstick is only loosely held in the sleeves and consequently rattles in the sleeves.

Accordingly, it is another object of th invention to provide an inexpensive plastic lipstick holder having a novel arrangement in which the rattling of the carrier, when the lipstick is at the limit of its movement out of the s eeves, is avoided.

Although certain conventional lipstick holders are provided with a mechanism for positively holding or locking the lipstick against inadvertent axial movement into the sleeve when withdrawn to the limit of its outward movement, such arrangements are at best only partially effective. Accordingly, it is another object of the invention to provide an inexpensive plastic lipstick holder having an improved holding mechanism to positively hold or lock the lipstick against inadvertent retraction when at the limit of its outward movement.

This same improved holding arrangement also prevents rattling of the carrier in the sleeves when the lipstick is at the limit of its outward movement.

Yet another object is to provide such an inexpensive plastic lipstick holder consisting of an inexpensive plastic cam sleeve and an inexpensive plastic keyway sleeve detachably attached to each other in an improved and novel manner to permit rotation of one with respect to the other with a minimum of friction therebetween but to cause them to be instantaneously forced into tight frictional contact with each other in response to application of an axial force to the end of the partially withdrawn lipstick. Portions of the two sleeves also cooperate with each other when the carrier is moved to its outermost position to firmly and positively clamp it in such position against rattling and against inadvertent retraction into the sleeves.

Other objects and advantages of the invention will be apparent from the following description and accompanying drawings describing and showing for illustrative purposes only, an embodiment of the invention.

In the drawings:

FIG. 1 is an exploded view in perspective of a lipstick holder embodying the present invention;

FIG. 2 is a section in elevation of the lipstick holder of FIG. 1 with the carrier in fully retracted position;

FIG. 3 is a section like FIG, 2 showing the lipstick carrier moved to the limit of its upward and outward movement by rotation of the inner cam sleeve with respect to the outer keyway sleeve, in which position the carrier is firmly held against rattling and is positively locked against inadvertent retraction;

FIG. 4 is a section like FIG. 2 showing the relative positions of the two sleeves with the lipstick carrier located at a point intermediate the ends of its travel and while being moved. by rotation of the inner cam sleeve with respect to the outer keyway sleeves;

FIG. 5 is like FIG. 4, i.e. with the carrier in the same intermediate position, showing the relative positions of the two sleeves when an axial retracting force is applied to the end of the partially withdrawn lipstick to cause spreading of the flexible inner cam sleeve int-o tight frictional contact with the outer keyway sleeve;

FIG. 6 is a section taken along the line 6-6 of FIG. 2.

With reference to the drawings, 2 represents a lipstick holder embodying the invention. It consists of (1) an outer relatively rigid plastic keyway sleeve 4 having a longitudinal keyway groove 5 in its inner surface, (2) an inner highly flexible plastic cam sleeve 6 concentrically and rotatably received within the outer sleeve 4 and having a spiral cam slot 7, (3) a cylindrical plastic lipstick carrier 8, slidably received within cam sleeve 6, having a cylindrical-shaped, solid lug 9 extending radially from the outer surface thereof through slot 7 and into groove 5 and containing lipstick 10, (4) a hollow base 12 mounted on the lower end portion 13 of the inner sleeve 6 with a tight friction fit and (5) a hollow cylindrical cap 14 adapted to be removably placed over the outer sleeve 4, as shown in FIG. 2, when the lipstick is fully retracted.

Outer sleeve 4 is open at its top. The longitudinal keyway groove 5 terminates at 22 short of the open topend of the outer sleeve 4. The upper ungrooved end portion 16 of the inner surface 18 of the outer sleeve 4 is of reduced diameter, the intersection of such reduced diameter end portion 16 with the adjacent portion of the inner surface 18 forming an internal shoulder 20 which is level with the upper end wall 22 of the internal longitudinal keyway groove 5. The outer periphery of the upper end portion of sleeve 4 above the shoulder 20 is tapered at 21. The lower end portion 24 of the internal a surface 18 of outer sleeve 4 is enlarged in diameter, such enlarged diameter portion 24 forming a continuous flush wall with the floor of groove 5, which terminates at its lower end at such enlarged diameterend portion 24. The

styrene or any other kind of resin, preferably polyvinyl or other thermoplastic resins. The wall thickness'of sleeve 4 is substantially greater than that of the slotted portion of cam sleeve 6 so that it is relatively rigid compared to the slotted portion of cam sleeve 6.

The cam sleeve 6 is open at its top and the spiral cam slot 7 extends to the top edge 30 of such sleeve, as shown. The driving edge of the spiral slot 7 which engages the lug 9 to drive the carrier upwardly and outwardlywhen the cam'sleeve is rotated with respect to the outer sleeve is indicated as 32. The upper end ofthis driving edge has a horizontal jog 34 (FIG. 3) therein, the floor 36 of which is inclined slightly upwardly (about 5") as it extends from the entry of. the jog to the end wall 38 of the jog, which end wall itself has an inclination as shown (about 140 from horizontal). After the lug 9 has been driven upwardly in groove 5 by edge .32 of cam slot 7 to a point opposite the entry to the horizontal jog 34, further rotation of the inner cam sleeve with respect to the outer sleeve drives the lug horizontally into thejog .34 along the slightly inclined horizontal floor 36 thereof and against the end wall 38 thereof, as shown in FIG. 3.

The upward inclination of floor 36 forces the lug .up-

wardly intofirm engagement with theend wall 22 of longitudinal groove 5, so that the lug is wedged tightly between the floor 36 and'end wall 22 of the groove :5 when it engages end wall 38 of the jog, as shown in FIG. 3, to thereby hold the carrier 8 firmly against rattling and positively locking the carrier 8 against inadvertent axial retractionwhen a downward axial force is applied to the end of the fully extended lipstick. The carrier is now at its upper limit, of movement, in which position the lipstick is fully extended, as shown in FIG. 3. In order to retract the carrier 8 when it is in this position, it is necessary to rotate the cam sleeve with respect to the outer sleeve in an opposite direction and with some force to .unwedge the lug 9 and move it horizontally out of the jog 34, whereafter further relative rotation of the cam-sleeve with respect to the outer sleeve retracts the carrier and lipstick, the fully retracted'position being shown in FIG. 2.

The periphery of the inner cam sleeve 6 is provided withan external annular rib: 40 slightly below the lower end 41 of the spiral slot 7. Slightly below the rib 40' the peripheryof cam sleeve 6 is enlarged at 42 to form an enlarged cylindrical shaped portion 42 having spaced around the periphery thereof a plurality (three) of integral lugs 44 elongated in the axial direction of the sleeve, as shown. These lugs frictionally engage the inner surface of cover 14 when it is placed over the

sleeves

4 and 6,-as shown in FIG. 2, to removably hold the cover 14 on the sleeves. Below the enlarged peripheral portion 42, the periphery of sleeve 6 tapers inwardly at 46 to its lower end, as shown, such lower end of the sleeve being closed at48. This tapered lower end portion of the cam sleeve is designated by the numeral 13.

An annular groove 50 is formed in the periphery of cam sleeve 6 between and by'the rib 40. and theupper shoulder 54 of enlarged portion 42, in which groove the internalsnap fastening protrusions 26 of outer sleeve ,4 are secured, as shown, when they are snapped over and under rib 40 to hold the outer sleeve 4 on the cam sleeve 6 for rotation with'respect to each other- The vertical height of groove 50 is slightly greater than that of the 4 protrusions 26 received in such groove to provide a slight clearance. The two sleeves are detachably attached to each other in this manner. The floor of groove 50 is of the same diameter as the external diameter of the cam sleeve above the rib.

The length of the cam sleeve 6 between. rib 40 and the upperedge 30 of sleeve 6 is such that when the snap fastening protrusions 26 of outer sleeve 4 are snapped under the rib 40, the upper edge 30 of cam sleeve 6 lightly engages the shoulder 20 on the. innerzsurface of the outer sleeve 4, as shown, to thereby limit axial downward' movement of the outer sleeve with respect to'the cam sleeve.

When the outer sleeve 4 is snapped onto the cam sleeve 6, as shown, the rib'40 is spaced: downwardly from the shoulder 28 of outer sleeve 4, as shown (i.e. the height of the enlarged diameter or recessed portion 24 of inner surface 18 of the outer sleeve is greater than the vertical thickness of the rib 40), and the lower edge 52 of the outer sleeve lightly engages the peripheral shoulder 54 of cam sleeve 6 formed by the enlarged peripheral portion 42, such shoulder 54 forming the loweredge of the peripheral and annular groove 50. This. light engagement limits axial downward movement of the outer sleeve 4 with respect to the cam sleeve 6. If desired, edge 52 may 'be spaced slightly above shoulder 54 in which case only the engagement of upper edge 30 of the cam sleeve-6 with shoulder. 20 is relied on to limit downward movement of the outer sleeve with respect to the cam sleeve.

outer sleeve in which caseonliy the engagement of edge 52 of the outer sleeve with shoulder 54 of thecam sleeve is relied onto limit downward movement of the outer sleeve with respect to the camsleeve.

The enlarged diameter portion 24 at the lower end of edge 30 of the cam sleeve 6 and the shoulder 20 of the outer sleeve 4, such areascomprising the bearing areas, for. rotation of the sleeves with respect to each other The outer periphery of rib 40 may lightly engagethe enlarged diameter portion 24 of the inner surface 18 and the radially inner edge of protrusions 26 may lightly engage the floor of recess 50 in which case these areas also comprise bearing areas. It may be seen that the total area of contact betweenthe sleeves, i.e. .the total bearing area, is relatively small and that at no areaof contact are the surfaces of the two sleeves pressed against each other with any significant pressure so that resistance to rotation of the sleeves with respect to each other to extend and retract. the lipstick is minimal. This is achieved primarily by radially spacing theinner surface 18 of the outer sleeve slightly from the periphery of the cam sleeve over the lengths of the two sleeves above the rib'40. Since the rib 40 is located closely adjacent the lower end of the outer sleeve, this means that the outer sleeve is radially spaced from the inner sleeve over substantially the entire length of such outersleeve.

However, the spacing between the cam sleeve periphery 55 and the inner surface 18 of outer sleeve 4 is only very slight, i.e. between'about 0.001 and 0.006-inch, pref.-

erably between about 0.002 and 0.005 inch. A preferred spacing is about 0.002 inch.

The cam sleeve is made of a relatively elastic and flexible thermoplastic resin, preferably a polyvinyl resin, .having a relatively low modulus of elasticity compared,

On theother hand, edge 30 of the cam sleeve may be slightly spaced below shoulder 20 of the i to metal. The modulus of elasticity of the resin should preferably not be greater than about 500,000 pounds per square inch (to stretch it twice its size). A medium impact polystyrene has proven satisfactory.

The wall thickness of the slotted portion 56 of the cam sleeve 6 above rib 40 is thin being between about .01 and about .03 inch for a spiral cam slot 7 having a slope of between about 30 and 50, which are the practical limits of cam slot slope for a lipstick holder; This thin wall thickness together with the 'low modulus of elasticity of the plastic and the extension of the spiral slot 7 to the upper edge 30 of the cam sleeve makes such slotted portion extremely flexible.

A preferred slope of spiral slot 7 is 40 for which a preferred wall thickness of the slotted portion 56 of the cam sleeve is .0225 inch with a spacing 57 between slotted portion 56 of the cam sleeve and the inner surface of the outer sleeve between 0.001 and 0.006 inch.

As aforesaid, the spacing 57 between the two sleeves reduces substantially the total area of frictional contact therebetween to the relatively small bearing areas referred to above, so consequently the two sleeves can be rotated with respect to each other to drive the carrier 8 and lipstick 10 with a minimum of effort, as shown in FIG. 4.

However, due to the extreme flexibility of the slotted portion 56 of the cam sleeve, as aforesaid, and due to the very slight thickness of the spacing 57, as aforesaid, any slight axial force on the end of the partially extended lipstick when the carrier is in any position intermediate the ends of its travel, i.e. intermediate the ends of the spiral slot 7, as shown in FIGS. 4 and 5, will act through the driving edge 32 of cam slot 7 to instantaneously radially spread the highly flexible cam sleeve 56 into tight frictional contact with the inner surface 18 of the outer sleeve as shown in FIG. 5, to lock the lipstick and carrier against axial movement due to such force. The greater the force applied, the tighter the cam sleeve will be forced against the outer sleeve and the greater the resistance to retraction of the lipstick. Thus, although the lipstick can be withdrawn from and retracted into the sleeve with a minimum of efifort by relative rotation between the two sleeves, nevertheless, the partially withdrawn lipstick cannot be inadvertently pushed into the holder. Also, any force tending to rattle the carrier will be resisted by the instantaneous spreading of the highly flexible cam sleeve wall into frictional contact with the outer sleeve. When the carrier is located at its outermost position, as shown in FIG. 3, the cooperating jog 34 and end wall 22 of groove 5 positively lock the carrier against rattling and inadvertent retraction. In any other partially withdrawn position, it is the expansion of the cam sleeve wall against the outer sleeve which prevents inadvertent axial retraction of the carrier.

The width of the spacing between the sleeves above rib 40, the wall thickness of the slotted portion 56 of cam sleeve 6, the material from which said cam sleeve is made and the slope of the spiral slot all cooperate to provide the instantaneous spreading of the slotted portion of the cam sleeve into tight frictional contact with the outer sleeve. The maximum and minimum wall thickness depends on the width of the spacing, the material of the cam sleeve and the slope of the slot. On the other hand, the maximum and minimum width of the spacing depends on the wall thickness, the material of the cam sleeve and the slope of the slot. For example, if the width of the spacing is less, the wall thickness of the cam sleeve can be greater and if the wall thickness is less, the width of the spacing can be greater. Also, the maximum modulus of elasticity depends on the wall thickness, the width of the spacing and the slope of the spiral slot. For example, if the wall thickness or width of the spacing is less, the modulus of elasticity can be greater. The less the slope of the spiral slot, the less can be the wall thickness or the width of the spacing and the greater can be the modulus of elasticity. Consequently, it is difiicult to specifiy absolutely specific minimum and maximum wall thicknesses, minimum and maximum spacing widths and maximum modulus of elasticity. However, given the teaching that the flexibility of the slotted portion of the cam sleeve should cooperate with the spacing between cam sleeve and outer sleeve to cause the cam sleeve to be instantaneously spread into tight frictional contact with the outer sleeve upon application of force to the end of the partially extended lipstick, the proper wall thickness of the cam sleeve and proper spacing between cam sleeve and outer. sleeve for any particular plastic of low modulus of elasticity and any particular slope of the spiral slot will be obvious to persons skilled in this art. In most cases, however, the wall thickness should not exceed .03 inch and the width of the spacing should not exceed .06 inch and the modulus of elasticity should not exceed 500,000 pounds per square inch with a spiral cam slope between 30 and 50", which are the practical limits for a lipstick holder.

The relatively rigid plastic base 12 (also of a thermoplastic resin such as a polyvinyl resin, e.g. polystyrene) is fitted over the tapered end portion 13 of the inner cam sleeve, as shown. The lower end portion 60 of the internal bore 62 in the base 12 has a taper conforming to that of the end portion 13 of the cam sleeve, such tapered surfaces providing a tight friction fit. Also the diameter of the upper end of the bore 62 of the base fits tightly to the upper end of tapered end portion 13 of the cam sleeve. Consequently, the base and cam sleeve rotate together and they may be integral. The upper edge 64 of the base 12 engages the lower shoulder formed by the intersection of the enlarged peripheral portion 42 and the lower tapered portion 13 of the cam sleeve 6. However, such upper edge 64 extends radially outwardly beyond the cam sleeve to form a stop engaged by the lower edge of the cap 14 when such cap is placed on the lipstick holder, as shown in FIG. 2.

The carrier 8 may be made of any plastic material, preferably a thermoplastic resin such as a polyvinyl resin. Polystyrene has been found suitable.

The cap 14 is also made of a thermoplastic resin, such as a polyvinyl resin, e.g. polystyrene.

The two sleeves, the carrier, the base and the cap may all be molded in a simple and inexpensive manner to provide an inexpensive lipstick holder which can be simplv manufactured by mass production techniques.

I claim:

1. A plastic lipstick holder comprising an inner, flexible and resilient, thin-walled, plastic cam sleeve having a base at its lower end and open at its top end and having a spiral cam slot therein extending to the open top end thereof, a plastic outer sleeve located peripherally and concentrically around said cam sleeve, said outer sleeve being open at its top and having a longitudinal groove in the inner surface thereof terminating at a point spaced from the open top thereof to form an end wall of said groove, a cylindrical-shaped lipstick carrier slidably received in said cam sleeve and having a lug extending through said cam slot and into said longitudinal groove, means detachably attaching said outer sleeve at its lower end portion to a portion of said cam sleeve below said cam slot for rotation of said sleeves with respect to each other, whereby said carrier is axially propelled within said sleeves, an edge of said spiral slot comprising a driving edge for axially driving said lug and hence said carrier axially upwardly, the inner surface of said outer sleeve located radially outwardly of the slotted portion of said cam sleeve having a slight clearance with respect to the outer periphery of said slotted portion of said cam sleeve to permit freedom of rotation of said sleeves with respect to each other, at least said slotted portion of said cam sleeve being sufficiently flexible so that when said lug is located in said cam slot intermediate its ends, downward force applied to said carrier and transmitted by said lug to said driving edge of said cam slot will spread said cam sleeve into tight frictional engagement with said-v inner surface of said outer sleeve to lock said carrier against axial downward movement.

2. A lipstick holder according to claim 1,said means i for attaching said outer sleeve to sid cam sleeve com-, prising a cooperating annular rib and protrusion, on thefaces of relatively small area forrotation of said sleeves with respect to each other, the inner surface of said outer sleeve above said rib and the outer surface of said cam sleeve above said rib normally having said slight radial clearance.

3. A lipstick holder according to claim 1, said means for attaching said outer sleeve .to said cam sleeve comprising a peripheral integral rib on said cam sleeve located below said spiral slot and an integral protrusion extending radially inwardly from the lower end of said outer sleeve under said rib, the outer peripheral surface of said cam sleeve above said rib and the inner surface of said outer sleeve above said rib normally having said slight radial clearance.

4.A'lipstick holder according to claim 3, said cam sleeve having an annular peripheral groove directly below and formed inpart by said rib and into which said protrusion extends, said .groove on said cam sleeve and said protrusion on said outer sleeve forming cooperating bearing surfaces of relatively small area for rotation of said sleeves with respect to each other.

5. A lipstick holder according to claim 3, the inner surface of said outer sleeve above said end wall of said longitudinal slot being of reduced diameter to provide an internal shoulder about level with said end wall of said longitudinal slot, said shoulder engaging the upper edge of said cam sleeve to hold said cam sleeve against up ward movement with respect to said outer sleeve.

6. A lipstick holder according to claim 5, said protrusion being located at the lower end of said outer sleeve, said inner surface of said outer sleeve being normally radially spaced outwardly from the outer surface of said cam sleeve over the, length of said outer surface above said rib to provide said radial clearance, whereby the only normal areas of contact between said sleeves are between,

said protrusion on said outer sleeve and said groove of said cam sleeve and between the upper edge of said cam said external rib of said cam sleeve to detachably attach 6 said sleeves together for rotation with respect to each other.

8. A lipstick holder accordingto claim 3, the lower end portion of the inner surface of said outer sleeve being enlarged to clear said rib, said protrusion extending radially inwardly under said rib and into said groove from the lower enlarged end of said inner surface of said outer sleeve, said enlargement extending upwardly beyond said rib.

9. A lipstick holder accordingto claim 3,-said cam sleeve having a peripherally enlarged cylindrical portion below saidrib forming a shoulder spaced slightly below said rib, said peripheral-groove being formed by said rib and said last-mentioned shoulder. a

10. A lipstick holder according to claim 9, said cam sleeve having an externally tapered lower end portion. be-

low said peripherally enlarged portion, said base having an internal bore receiving said tapered portion of said;

cam sleeve, at least part of said bore having a taperconforming to the taper of said lower end portion of said cam sleeve, said base being fitted .over said tapered lower,

end portion of said cam sleeve by a friction fit.

11.. A plastic lipstick holder according to claim 1, the wall thickness of at least the slotted portion of said cam sleeve being between about 0.01 and 0.03 inch, the radial:

clearance between the outer periphery of said cam sleeve and the inner surface of said outer, sleeve being between about 0.001 and 0.006 inch, the slope of said spiralcam slot being between about: 30 and 50 and the modulus of elasticity of the plastic of said cam sleeve being not greater than about 500,000 poundsper square inch.

12., A plastic lipstick holder according to claim 1,;the

upper end of said driving edge of said spiral slot having a-horizontal jog therein, said jog having a horizontal floor and an end wall, said lug ,beingmoved horizontally into said jog uponcontinued rotation of said sleeves with" respect to each other in a direction to drive said lug upwardly, said jog being located below said end wall of said longitudinal groove when said lug is moved into said jog, said horizontal floor. having a slight upward inclina tion as it extendsfrom the entry of said jog to said end,

wall of saidjog, the vertical spacing between said hor izontal floor of said jog and the end wall of said longitudinal groove being such that said lug is wedged firmly therebetween by movement thereof horizontally into said jog.

References Cited by the Examiner UNITED STATESPATENTS 2,022,075 11/1935 Cabrera 20656 2,099,488 11/ 1937 Kasdan et al. 206-56 2,130,345 9/1938 Freeman 206-56 2,345,315 3/ 1944 Anderson 206-56 3,083,822 4/ 1963 Clark 206-56 3,175,680 3/1965 Fuglsang-Madsen et a1. 206-56 FOREIGN PATENTS 909,021 11/ 1945 France.

400,051 10/ 1933' Great Britaina 506,428 5/1939 Great Britain.

432,291 3/ 1948 Italy.

THERON CONDON, Primary Examiner.

MARTHA L. RICE, Examiner.

Claims

1. A PLASTIC LIPSTICK HOLDER COMPRISING AN INNER, FLEXIBLE AND RESILIENT, THIN-WALLED, PLASTIC CAM SLEEVE HAVING A BASE AT ITS LOWER END AND OPEN AT ITS TOP END AND HAVING A SPIRAL CAM SLOT THEREIN EXTENDING TO THE OPEN TOP END THEREOF, A PLASTIC OUTER SLEEVE LOCATED PERIPHERALLY AND CONCENTRICALLY AROUND SAID CAM SLEEVE, SAID OUTER SLEEVE BEING OPEN AT ITS TOP AND HAVING A LONGITUDINAL GROOVE IN THE INNER SURFACE THEREOF TERMINATING AT A POINT SPACED FROM THE OPEN TOP THEREOF TO FORM AN END WALL OF SAID GROOVE, A CYLINDRICAL-SHAPED LIPSTICK CARRIER SLIDABLY RECEIVED IN SAID CAM SLEEVE AND HAVING A LUG EXTENDING THROUGH SAID CAM SLOT AND INTO SAID LONGITUDINAL GROOVE, MEANS DETACHABLY ATTACHING SAID OUTER SLEEVE AT ITS LOWER END PORTION TO A PORTION OF SAID CAM SLEEVE BELOW SAID CAM SLOT FOR ROTATION OF SAID SLEEVES WITH RESPECT TO EACH OTHER, WHEREBY SAID CARRIER IS AXIALLY PROPELLED WITHIN SAID SLEEVES, AN EDGE OF SAID SPIRAL SLOT COMPRISING A DRIVING EDGE FOR AXIALLY DRIVING SAID LUG AND HENCE SAID CARRIER AXIALLY UPWARDLY, THE INNER SURFACE OF SAID OUTER SLEEVE LOCATED RADIALLY OUTWARDLY OF THE SLOTTED PORTION OF SAID CAM SLEEVE HAVING A SLIGHT CLEARANCE WITH RESPECT TO THE OUTER PERIPHERY OF SAID SLOTTED PORTION OF SAID CAM SLEEVE TO PERMIT FREEDOM OF ROTATION OF SAID SLEEVES WITH RESPECT TO EACH OTHER, AT LEAST SAID SLOTTED PORTION OF SAID CAM SLEEVE BEING SUFFICIENTLY FLEXIBLE SO THAT WHEN SAID LUG IS LOCATED IN SAID CAM SLOT INTERMEDIATE ITS ENDS, DOWNWARD FORCE APPLIED TO SAID CARRIER AND TRANSMITTED BY SAID LUG TO SAID DRIVING EDGE OF SAID CAM SLOT WILL SPREAD SAID CAM SLEEVE INTO TIGHT FRICTIONAL ENGAGEMENT WITH SAID INNER SURFACE OF SAID OUTER SLEEVE TO LOCK SAID CARRIER AGAINST AXIAL DOWNWARD MOVEMENT.