CA2077251C - Odorant and cosmetic dispensing articles - Google Patents
Odorant and cosmetic dispensing articlesInfo
- Publication number
- CA2077251C CA2077251C CA 2077251 CA2077251A CA2077251C CA 2077251 C CA2077251 C CA 2077251C CA 2077251 CA2077251 CA 2077251 CA 2077251 A CA2077251 A CA 2077251A CA 2077251 C CA2077251 C CA 2077251C
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Abstract
Described is a dispensing unit of a volatilizable substance capable of visible determiation of its extent of use. The unit has a variably located centroid initially positioned proximate the geometric center point of the unit with the centroid moving downward when the unit is in use. As the volatilizable substance evaporates, a weight eccentrically located in the same place as the volatilizable substance angularly rotates about the "z" axis leaving its upper position and finally coming to rest at a lower position when the volatilizable material is used up. At least the final position is rendered visibly detectable by means of a simple sighting mechanism.
Also described are multi-layer, multi-functional volatilizable substance delivery articles. The articles are constructed in order to deliver, in sequentially-timed fashion, to the environment surrounding the article (e.g., atmosphere, or body of water) different fish feed attractants, repellents, combinations thereof, perfumes having different aroma profiles, insect repellents which repel different insects...during the day time hours and during the night time hours, air freshener-insect repellent combinations, perfume-air freshener combinations and the like. The article can be constructed where one of the layers is a gel layer and the matrix layer adjacent thereto is composed of perfume-containing particles which emit a fragrance in a sustained release fashion.
Also described is a stick shave formulation and article employing said formulation. The stick shave formulation contains a triethanolamine stearate soap formed in situ with from 1-10% of a nonionic wetting agent; from 1-15% of a silicone copolymer; from 0.1-1% of a polyoxyethylene polymer slip agent; from 1-30% of a synthetic detergent; from 2-10% of a whitening agent; and 5-20% of emollient moisturizers and hair lubricants.
Also described are multi-layer, multi-functional volatilizable substance delivery articles. The articles are constructed in order to deliver, in sequentially-timed fashion, to the environment surrounding the article (e.g., atmosphere, or body of water) different fish feed attractants, repellents, combinations thereof, perfumes having different aroma profiles, insect repellents which repel different insects...during the day time hours and during the night time hours, air freshener-insect repellent combinations, perfume-air freshener combinations and the like. The article can be constructed where one of the layers is a gel layer and the matrix layer adjacent thereto is composed of perfume-containing particles which emit a fragrance in a sustained release fashion.
Also described is a stick shave formulation and article employing said formulation. The stick shave formulation contains a triethanolamine stearate soap formed in situ with from 1-10% of a nonionic wetting agent; from 1-15% of a silicone copolymer; from 0.1-1% of a polyoxyethylene polymer slip agent; from 1-30% of a synthetic detergent; from 2-10% of a whitening agent; and 5-20% of emollient moisturizers and hair lubricants.
Claims
(ii) two vertically disposed substantially planar outer surfaces located, respectively, in a first "x-y" plane and in a second "x-y" plane parallel to each other and rotatable about a lower "z" axis substantially perpendicular to each of said "x-y" planes, said first and second "x-y" planes each having a horizontal "x" axis and a vertical "y" axis;
(2) a shaft means parallel to said "z" axis about which said wall member is capable of rotating;
(3) located in a third "x-y" plane proximate said lower boundary arcuate segment on and removably affixed to a major portion of at least one of said planar outer surfaces, a laminar matrix of a volatilizable substance included in a non-volatilizable substance, the median plane of said laminar matrix being substantially parallel to said first and second "x-y"
planes;
(4) located in a fourth "x-y" plane proximate said upper boundary arcuate segment on and permanently affixed to a minor portion of at least one of said planar outer surfaces a substantially solid visible weight means having a centroid initially located in the proximity of said vertical "x-y" axis above the location of said shaft means, and at a height above ground greater than the height above ground of the centroid of said laminar matrix;
(5) associated with said wall member, a fixed sighting means comprising a window means located in a fifth "x-y" plane parallel to said first and second "x-y"
planes, perpendicular to said "z" axis and facing said visible weight means, said sighting means having a line of vision through said window means in a direction from said window means to at least one given location of said weight means, said line of vision being substantially parallel to said "z" axis whereby as the volatilizable substance evaporates, the weight means together with the wall member angularly rotates in said "x-y" plane about said "z" axis leaving its initial position (xo, yo, zo) at the first upper "y" axis location and finally coming to rest at a second lower "y" axis location (xf, yf, zo) which is visibly detectable from said window means, the angular velocity of said weight means together with said wall member being at least in part a function of the rate of elimination from said unit of said volatilizable substance.
3. The dispensing unit of Claim 1 of volatilizable substance capable of visible determiantion of its extent of use and having a variable centroid initially located below the geometric center point of the unit, with said variable centroid moving in a substantially downward direction on use of said dispensing unit comprising:
(1) a fixed vertically disposed substantially planar solid vapor impermeable wall member, said wall member having (i) an enclosing outer circumferential boundary having a first upper boundary arcuate segment and a first lower boundary arcuate segment, (ii) two vertically disposed substantially planar outer surfaces located, respectively, in a first "x-y" plane and in a second "x-y" plane being parallel to each other, said first and second "x-y" planes each having a horizontal "x" axis and a vertical "y" axis, each of said "x" axes and said "y" axes being perpendicular to a "z" axis; and (iii) a non-broken vapor impermeable side wall protruding from and contiguous with the entirety of said circumferential boundary extending in a direction substantially parallel to said "z" axis having a first upper arcuate segment and a second lower arcuate segment;
(2) a cylindrically shaped shaft means having a shaft wall parallel to said "z" axis having a first upper surface segment and a first lower surface segment;
(3) located in a third "x-y" plane proximate said first lower boundary arcuate segment and said second lower arcuate segment on and removably affixed to a major portion of at least one of said planar outer surfaces and a major portion of said second lower arcuate segment, a laminar matrix of a volatizable substance included in a non-volatilizable substance, the median plane of said laminar matrix being substantially parallel to said first and second "x-y" planes, said matrix having a second upper surface segment parallel to said "z" axis and perpendicular to each of said "x-y" planes and a second lower surface segment parallel to said "z" axis and perpendicular to each of said "x-y" planes and initially being contiguous with said first lower segment surface;
(4) located in said third "x-y" plane initially proximate said first upper boundary arcuate segment and said second upper arcuate segment and initially having a major portion of its lower surface contiguous with the second upper surface segment of said matrix, a substantially solid, visible, freely rotatable weight means having a centroid initially located in the proximity of said vertical "y" axis above the location of said shaft means and at a height above ground greater than the height above ground of the centroid of said laminar matrix;
(5) associated with said visible weight means, a fixed sighting means comprising a window means located in a fourth "x-y" plane parallel to said first and second "x-y" planes, perpendicular to said "z" axis, and facing said visible weight means, said sighting means having a line of vision through said window means in a direction from said window means to at least one given location of said weight means, said line of vision being substantially parallel to said "z" axis whereby as the volatilizable substance evaporates the weight means angularly rotates in said third "x-y" plane above said "z" axis leaving its initial position at the (xo yo, zo) at the first upper "y" axis location and finally coming to rest at a second lower "y" axis location (xf, yf, zo) which is visibly detectable from said window means, the angular velocity of said weight means being at least in part a function of the rate of elimination from said unit of said volatilizable substance.
4. The dispensing unit of Claim 1 of volatilizable substance capable of visible determination of its extent of use in having a variably-located centroid initially located proximate to and below the geometric center point of the unit with said variably located centroid moving in a substantially downward direction on use of said dispensing unit, comprising:
(1) a freely rotatable vertically disposed substantially solid impermeable first wall member, said first wall member having (i) an enclosing first outer circumferential boundary having a first upper boundary arcuate segment and a first lower boundary arcuate segment; (ii) two vertically disposed substantially planar outer surfaces enclosed by said first circumferential boundary and located, respectively, in a first "x-y" plane and in a second "x-y" plane, said first and second "x-y" planes being substantially parallel to each other, said first and second "x-y"
planes each having a horizontal "x" axis and a vertical "y" axis, each of said "x" axes and said "y"
axes being perpendicular to said "z" axis and (iii) an unbroken vapor impermeable first side wall protruding from and contiguous with the entirety of said first circumferential boundary of said first wall member, extending in a direction substantially parallel to said "z" axis and having a second upper arcuate segment and a second lower arcuate segment;
(2) proximate to, "x-y"-planarly parallel to, "z"-co-axial with and spaced from said first wall member a fixed vertically disposed substantially solid impermeable second wall member, said second wall member having (i) an enclosing second outer circumferential boundary circumscribing the enclosing first outer circumferential boundary of said first wall member; (ii) two vertically disposed substantially planar outer surfaces enclosed by said circumferential boundary located, respectively, in a third "x-y" plane and in a fourth "x-y" plane, said first, second, third and fourth "x-y" planes being substantially parallel to one another, said third and fourth "x-y" planes each having a horizontal "x" axis and a vertical "y" axis, each of said "x" axes and said "y" axes being perpendicular to said "z" axis;
and (iii) a second non-broken vapor impermeable side wall protruding from and contiguous with the entirety of said second circumferential boundary extending in a direction substantially parallel to said "z" axis and circumscribing said first side wall and said first wall member;
(3) fixedly positioned revolvable bearing means located between said first side wall and said second side wall enabling said first wall member to freely rotate in its "x-y" plane about said "z" axis within the confines of the second side wall of the second side wall member;
(4) located in a fifth "x-y" plane proximate said first lower boundary arcuate segment and said second lower arcuate segment on and removably affixed to a major portion of at least one of said planar outer surfaces of said first wall member and a major portion of said second lower arcuate segment of said first side wall of said first wall member, a laminar matrix of a volatilizable substance included in a non-volatilizable substance, the median "x-y" plane of said laminar plane of said laminar matrix being substantially parallel to said first, second, third and fourth "x-y" planes;
(5) located in a sixth "x-y" plane proximate said upper boundary arcuate segment of said first wall member on and permanently affixed to a minor portion of at least one of said planar outer surfaces of said first wall member, substantially solid visible weight means having its centroid initially located in the proximity of said vertical "y" axis above the location of said "z" axis and at a height above ground greater than the height above ground of the centroid of said laminar matrix: and (6) associated with said first wall member a fixed sighting means comprising a window means located in a seventh "x-y" plane parallel to said first, second, third, fourth, fifth and sixth "x-y" planes and perpendicular to said "z" axis, said sighting means having a line of vision through said window means in a direction from said window means to at least one given location of said weight means, said line of vision being substantially parallel to said "z" axis whereby as the volatilizable substance evaporates, the weight means angularly rotates in said sixth "x-y" plane about said "z" axis leaving its initial position (xo, yo, zo) at the first upper "y" axis location and finally coming to rest at a second lower "y" axis location (xf, yf, zo) which is visibly detectable from said window means, the angular velocity of said weight means being at least in part a function of the rate of elimination from said unit of said volatilizable substance.
5. A multi-layer sequentially timed release polyfunctional volatilizable substance delivery article comprising a plurality of concentric or coaxial neighboring matrix layers, said layers (i) having a finite thickness having a finite thickness vector t and two matrix surfaces each of which is substantially perpendicular to said thickness vector t; and (ii) consisting essentially of a suspension agent which is substantially non-flowable at ambient conditions containing at least one volatilizable substance capable of emission from a matrix surface, a surface of one matrix layer being, prior to use of said article, contiguous with a surface of its neighboring matrix layer, whereby on use of said article, the outermost matrix layer initially evolves its contained volatilizable substance at a rate substantially greater than the rate at which its neighboring matrix layer evolves its contained volatilizable substance until such point in time that sufficient volatilizable substance contained in the outermost matrix layer has been evolved into the environment surrounding said article, that a substantial portion of the surface of the neighboring matrix layer is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of volatilizable substance from the neighboring matrix layer.
6. The multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of Claim 5 comprising:
(a) a first matrix layer (i) having a finite thickness having a finite thickness vector t1, an inner first matrix surface substantially perpendicular to said vector t1 and an outer first matrix surface substantially perpendicular to said vector t1; and (ii) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent containing a first volatilizable substance capable of emission thereof from said outer first matrix surface;
(b) a second matrix layer (i) having a finite thickness having a finite thickness vector t2, an inner second matrix surface substantially perpendicular to said vector t2 and an outer second matrix surface substantially perpendicular to said vector t2: and (ii) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent containing a second volatilizable substance capable of emission thereof from said inner second matrix surface, said inner second matrix surface being, prior to use of said article, contiguous with said outer first matrix surface whereby on use of said article said first matrix layer initially evolves said first volatilizable substance at a rate substantially greater than the rate at which said second matrix layer evolves said second volatilizable substance until such point in time that sufficient first volatilizable substance has been evolved into the environment surrounding said article, that a substantial portion of said second inner surface is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of said second volatilizable substance.
7. The multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of claim 5 having a vertically disposed "y" axis comprising:
(a) a horizontally disposed first matrix layer having a first upper matrix surface in a "x-z" plane having a maximum variable radius R1 and a first lower matrix surface in an "x-z" plane having a maximum variable radius R1', said "x-z" planes being perpendicular to said "y" axis;
(i) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent containing a first volatilizable substance capable of emission from said first upper surface;
(ii) having a horizontally disposed first "x-z"
matrix median plane having a first circumferential outer boundary located in said first "x-z" matrix median plane; and (iii) having an unbroken first side wall extending both upwardly at a distance H1 and downwardly at a distance H1' from said first circumferential outer boundary in a direction substantially perpendicular thereto on said "y".
axis, and a first outer matrix wall surface;
(b) a second horizontally disposed matrix layer coaxial with reference to said "y" axis with said first matrix layer having a second upper matrix surface in an "x-z"
plane having a maximum variable radius R2 initially substantially co-circumferential with, contiguous with and substantially coplanar with said first lower matrix surface of said first matrix layer, and a second lower matrix surface in an "x-z" plane having a maximum variable radius R2' substantially parallel to said second upper matrix surface (i) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent having contained therein a second volatilizable substance capable of emission from said second upper matrix surface;
(ii) having a horizontally disposed second "x-z"
matrix median plane having a second circumferential outer boundary located in said second "x-z" matrix median plane, said second "x-z" matrix median plane being substantially parallel to and coaxial with said first "x-z"
matrix median plane with reference to said "y"
axis; and (iii) having an unbroken second side wall extending upwardly at a distance H2 and downwardly at a distance H2' from said second circumferential outer boundary in a direction substantially perpendicular thereto on said "y" axis; and having a second outer matrix wall surface;
(c) a volatilizable substance-impervious laminar support means for supporting said second matrix layer, said support means (i) having an upper support surface located in an "x-z' plane having a maximum radius R3 perpendicular to said "y" axis; said upper support surface being initially contiguous with and substantially coplanar with said second lower matrix surface;
(ii) having a horizontally disposed "x-z" support median plane having a third circumferential outer boundary located in said "x-z" support median plane; and (iii) having an unbroken volatilizable substance-impervious third side wall extending upwardly at a distance Hs which is greater than or equal to H1 + H1' + H2 + H2' from said third circumferential outer boundary, said third side wall having an inner surface, said inner surface being initially contiguous with and parallel to said first outer matrix wall surface and said second outer matrix wall surface, whereby on use of said article, said first matrix layer evolves first volatilizable substance initially at a rate substantially greater than said second matrix layer evolves said second volatilizable substance; radii R1 and R1' diminish at a rate greater than the rate of diminishment of radii R2 and R2' thereby enabling the emission at an increasing rate of said second volatilizable substance.
8. The multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of Claim 5 having a vertically disposed "y" axis comprising:
(a) a vertically disposed first matrix mass (i) having a first unbroken side wall of length H1 substantially parallel to and circumferential with reference to said "y" axis which side wall has a first outer side wall surface;
(ii) having a first upper matrix surface horizontally disposed in an "x-z" plane;
(iii) having a first lower matrix surface horizontally disposed in an "x-z" plane, each of said "x-z"
planes being perpendicular to said "y" axis and parallel to one another;
(iv) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid porous or non-porous suspension agent containing a first volatilizable substance capable of emission from said outer side wall surface;
(v) covering said first upper matrix surface and said first lower matrix surface, volatilizable substance-impervious permanently affixed laminae having surfaces in the "x-z" plane coplanar and substantially contiguous with the first upper and lower matrix surfaces;
(b) a vertically disposed second matrix mass coaxial with said first matrix mass;
(i) having a second unbroken inner side wall initially coterminous with said first unbroken side wall of said first matrix mass having an initial length L1, circumferential with reference to said "y" axis, and having its surface contiguous with said first outer side wall surface of said first matrix mass; and (ii) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid porous or non-porous suspension agent containing a second volatilizable substance capable of emission from said second outer side wall surface, whereby on use of said article, said second matrix mass initially evolves said second volatilizable substance initially at a rate substantially greater than said first matrix mass evolves said first volatilizable substance until such point in time that sufficient second volatilizable substance has been evolved into the environment surrounding said article that a substantial portion of said first outer side wall is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of said first volatilizable substance.
9. The concentric multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of Claim 5 having a fixed geometric centroid comprising:
(a) a first matrix mass (i) having a first matrix outer surface, the points on which are at a range of distances Ra-Rb from said geometric centroid; and (ii) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid, porous or non-porous suspension agent containing a first volatilizable substance capable of emission from said first matrix outer surface;
(b) a second matrix mass concentric with said first matrix mass (i) having a second matrix inner surface contiguous with said first matrix outer surface;
(ii) having a thickness range of T1-T2:
(iii) having a second matrix outer surface the points on which are at a range of distances Ra + T1 to Rb + T2 from said geometric centroid; and (iv) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid, porous or non-porous suspension agent containing a second volatilizable substance capable of emission from said second matrix outer surface, whereby on use of said article said second matrix mass initially evolves said second volatilizable substance at a rate substantially greater than said first matrix mass evolves said first volatilizable substance until such point in time that sufficient second volatilizable substance has been evolved into the environment surrounding said article that a substantial portion of said first outer surface is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of said first volatilizable substance.
10. A shaving stick formulation comprising:
(i) from about 1 up to about 10% by weight of a nonionic wetting agent;
(ii) from about 1 up to about 15% by weight of a silicone copolymer;
(iii) from about 0.1 up to about 1% by weight of a polyoxyethylene polymer slip agent;
(iv) from about 1 up to about 30% of a synthetic detergent;
(v) from about 2 up to about 10% by weight of a whitening agent; and (vi) from about 5 up to about 20% by weight of an emollient moisturizer and hair lubricant with the remainder being a mixture of stearic acid and triethanolamine.
11. The composition of Claim 10 wherein the weight ratio of stearic acid:triethanolamine is about 10:1.
12. A shaving stick article comprising the formulation of Claim 10.
13. A shaving stick article comprising the formulation of Claim 11.
14. The formulation of Claim 10 wherein the whitening agent is titanium dioxide.
15. The formualtion of Claim 11 wherein the whitening agent is titanium dioxide.
16. A solid phase shaving stick formulation for use in forming a solid phase shaving stick article, said formulation enabling the continuous retention of the solid phase of said article at ambient conditions prior to, during and subsequent to use thereof, consisting essentially of:
(i) from about 1 up to about 10% by weight of a nonionic wetting agent;
(ii) from about 1 up to about 15% by weight of a silicone copolymer;
(iii) from about 0.1 up to about 1% by weight of a polyoxyethylene polymer slip agent;
(iv) from about 1 up to about 30% by weight of a synthetic detergent:
(v) from about 2 up to about 10% by weight of a whitening agent; and (vi) from about 5 up to about 20% by weight of an emollient moisturizer and hair lubricant with the remainder being a mixture of stearic acid and triethanolamine.
17. The composition of Claim 16 wherein the weight ratio of stearic acid:triethanolamine is about 10:1.
18. A shaving stick article comprising the formulation of Claim 16.
19. A shaving stick article comprising the formulation of Claim 17.
20. The formulation of Claim 16 wherein the whitening agent is titanium dioxide.
21. The formulation of Claim 17 wherein the whitening agent is titanium dioxide.
22. A method for forming a solid phase shaving stick article which continuously retains the solid phase at ambient conditions prior to, during and subsequent to the use thereof, comprising the steps of:
(i) intimately admixing stearic acid, an emollient moisturizer, a synthetic detergent and a nonionic wetting agent thereby forming a first mixture;
(ii) heating the first mixture until a melt is formed thereby forming a first melt;
(iii) admixing a whitening agent with said first melt thereby forming a second mixture;
(iv) intimately admixing a silicone copolymer, a hair lubricant, a polyoxyethylene polymer slip agent and triethanolamine in order to form a third mixture;
(v) heating said third mixture until a second melt is formed;
(vi) mixing said second melt with a synthetic detergent thereby forming a fourth mixture;
(vii) intimately admixing said fourth mixture with said second mixture thereby forming a fifth mixture;
(viii) admixing said fifth mixture with a perfume material thereby forming a sixth mixture; and (ix) pouring said sixth mixture into molds and allowing the resulting articles to cool and harden whereby the resulting shaving stick formulation consists essentially of:
(i) from about 1 up to about 10% by weight of a nonionic wetting agent;
(ii) from about 1 up to about 15% by weight of a silicone copolymer;
(iii) from about 0.1 up to about 1% by weight of a polyoxyethylene polymer slip agent;
(iv) from about 1 up to about 30% of a synthetic detergent;
(v) from about 2 up to about 10% by weight of a whitening agent; and (vi) from about 5 up to about 20% by weight of an emollient moisturizer and hair lubricant with the remainder being triethanolamine stearate.
23. The process of Claim 22 wherein the whitening agent is titanium dioxide.
24. A method of applying the solid shaving stick formulation of Claim 16 which method comprises the steps of:
(a) carrying out the process comprising the steps of:
(i) intimately admixing the stearic acid, an emollient moisturizer, a synthetic detergent and a nonionic wetting agent thereby forming a first mixture (ii) heating the first mixture until a melt is formed thereby forming a first melt;
(iii) admixing a whitening agent with said first melt thereby forming a second mixture;
(iv) intimately admixing a silicone copolymer, a hair lubricant, a polyoxyethylene polymer slip agent and triethanolamine in order to form a third mixture;
(v) heating said third mixture until a second melt is formed;
(vi) mixing said second melt with a synthetic detergent thereby forming a fourth mixture;
(vii) intimately admixing said fourth mixture with said second mixture thereby forming a fifth mixture;
(viii) admixing said fifth mixture with a perfume material thereby forming a sixth mixture; and (ix) pouring said sixth mixture into molds and allowing the resulting articles to cool and harden (b) applying the resulting shaving stick to skin to be shaved and (c) shaving the skin after such application.
(2) a shaft means parallel to said "z" axis about which said wall member is capable of rotating;
(3) located in a third "x-y" plane proximate said lower boundary arcuate segment on and removably affixed to a major portion of at least one of said planar outer surfaces, a laminar matrix of a volatilizable substance included in a non-volatilizable substance, the median plane of said laminar matrix being substantially parallel to said first and second "x-y"
planes;
(4) located in a fourth "x-y" plane proximate said upper boundary arcuate segment on and permanently affixed to a minor portion of at least one of said planar outer surfaces a substantially solid visible weight means having a centroid initially located in the proximity of said vertical "x-y" axis above the location of said shaft means, and at a height above ground greater than the height above ground of the centroid of said laminar matrix;
(5) associated with said wall member, a fixed sighting means comprising a window means located in a fifth "x-y" plane parallel to said first and second "x-y"
planes, perpendicular to said "z" axis and facing said visible weight means, said sighting means having a line of vision through said window means in a direction from said window means to at least one given location of said weight means, said line of vision being substantially parallel to said "z" axis whereby as the volatilizable substance evaporates, the weight means together with the wall member angularly rotates in said "x-y" plane about said "z" axis leaving its initial position (xo, yo, zo) at the first upper "y" axis location and finally coming to rest at a second lower "y" axis location (xf, yf, zo) which is visibly detectable from said window means, the angular velocity of said weight means together with said wall member being at least in part a function of the rate of elimination from said unit of said volatilizable substance.
3. The dispensing unit of Claim 1 of volatilizable substance capable of visible determiantion of its extent of use and having a variable centroid initially located below the geometric center point of the unit, with said variable centroid moving in a substantially downward direction on use of said dispensing unit comprising:
(1) a fixed vertically disposed substantially planar solid vapor impermeable wall member, said wall member having (i) an enclosing outer circumferential boundary having a first upper boundary arcuate segment and a first lower boundary arcuate segment, (ii) two vertically disposed substantially planar outer surfaces located, respectively, in a first "x-y" plane and in a second "x-y" plane being parallel to each other, said first and second "x-y" planes each having a horizontal "x" axis and a vertical "y" axis, each of said "x" axes and said "y" axes being perpendicular to a "z" axis; and (iii) a non-broken vapor impermeable side wall protruding from and contiguous with the entirety of said circumferential boundary extending in a direction substantially parallel to said "z" axis having a first upper arcuate segment and a second lower arcuate segment;
(2) a cylindrically shaped shaft means having a shaft wall parallel to said "z" axis having a first upper surface segment and a first lower surface segment;
(3) located in a third "x-y" plane proximate said first lower boundary arcuate segment and said second lower arcuate segment on and removably affixed to a major portion of at least one of said planar outer surfaces and a major portion of said second lower arcuate segment, a laminar matrix of a volatizable substance included in a non-volatilizable substance, the median plane of said laminar matrix being substantially parallel to said first and second "x-y" planes, said matrix having a second upper surface segment parallel to said "z" axis and perpendicular to each of said "x-y" planes and a second lower surface segment parallel to said "z" axis and perpendicular to each of said "x-y" planes and initially being contiguous with said first lower segment surface;
(4) located in said third "x-y" plane initially proximate said first upper boundary arcuate segment and said second upper arcuate segment and initially having a major portion of its lower surface contiguous with the second upper surface segment of said matrix, a substantially solid, visible, freely rotatable weight means having a centroid initially located in the proximity of said vertical "y" axis above the location of said shaft means and at a height above ground greater than the height above ground of the centroid of said laminar matrix;
(5) associated with said visible weight means, a fixed sighting means comprising a window means located in a fourth "x-y" plane parallel to said first and second "x-y" planes, perpendicular to said "z" axis, and facing said visible weight means, said sighting means having a line of vision through said window means in a direction from said window means to at least one given location of said weight means, said line of vision being substantially parallel to said "z" axis whereby as the volatilizable substance evaporates the weight means angularly rotates in said third "x-y" plane above said "z" axis leaving its initial position at the (xo yo, zo) at the first upper "y" axis location and finally coming to rest at a second lower "y" axis location (xf, yf, zo) which is visibly detectable from said window means, the angular velocity of said weight means being at least in part a function of the rate of elimination from said unit of said volatilizable substance.
4. The dispensing unit of Claim 1 of volatilizable substance capable of visible determination of its extent of use in having a variably-located centroid initially located proximate to and below the geometric center point of the unit with said variably located centroid moving in a substantially downward direction on use of said dispensing unit, comprising:
(1) a freely rotatable vertically disposed substantially solid impermeable first wall member, said first wall member having (i) an enclosing first outer circumferential boundary having a first upper boundary arcuate segment and a first lower boundary arcuate segment; (ii) two vertically disposed substantially planar outer surfaces enclosed by said first circumferential boundary and located, respectively, in a first "x-y" plane and in a second "x-y" plane, said first and second "x-y" planes being substantially parallel to each other, said first and second "x-y"
planes each having a horizontal "x" axis and a vertical "y" axis, each of said "x" axes and said "y"
axes being perpendicular to said "z" axis and (iii) an unbroken vapor impermeable first side wall protruding from and contiguous with the entirety of said first circumferential boundary of said first wall member, extending in a direction substantially parallel to said "z" axis and having a second upper arcuate segment and a second lower arcuate segment;
(2) proximate to, "x-y"-planarly parallel to, "z"-co-axial with and spaced from said first wall member a fixed vertically disposed substantially solid impermeable second wall member, said second wall member having (i) an enclosing second outer circumferential boundary circumscribing the enclosing first outer circumferential boundary of said first wall member; (ii) two vertically disposed substantially planar outer surfaces enclosed by said circumferential boundary located, respectively, in a third "x-y" plane and in a fourth "x-y" plane, said first, second, third and fourth "x-y" planes being substantially parallel to one another, said third and fourth "x-y" planes each having a horizontal "x" axis and a vertical "y" axis, each of said "x" axes and said "y" axes being perpendicular to said "z" axis;
and (iii) a second non-broken vapor impermeable side wall protruding from and contiguous with the entirety of said second circumferential boundary extending in a direction substantially parallel to said "z" axis and circumscribing said first side wall and said first wall member;
(3) fixedly positioned revolvable bearing means located between said first side wall and said second side wall enabling said first wall member to freely rotate in its "x-y" plane about said "z" axis within the confines of the second side wall of the second side wall member;
(4) located in a fifth "x-y" plane proximate said first lower boundary arcuate segment and said second lower arcuate segment on and removably affixed to a major portion of at least one of said planar outer surfaces of said first wall member and a major portion of said second lower arcuate segment of said first side wall of said first wall member, a laminar matrix of a volatilizable substance included in a non-volatilizable substance, the median "x-y" plane of said laminar plane of said laminar matrix being substantially parallel to said first, second, third and fourth "x-y" planes;
(5) located in a sixth "x-y" plane proximate said upper boundary arcuate segment of said first wall member on and permanently affixed to a minor portion of at least one of said planar outer surfaces of said first wall member, substantially solid visible weight means having its centroid initially located in the proximity of said vertical "y" axis above the location of said "z" axis and at a height above ground greater than the height above ground of the centroid of said laminar matrix: and (6) associated with said first wall member a fixed sighting means comprising a window means located in a seventh "x-y" plane parallel to said first, second, third, fourth, fifth and sixth "x-y" planes and perpendicular to said "z" axis, said sighting means having a line of vision through said window means in a direction from said window means to at least one given location of said weight means, said line of vision being substantially parallel to said "z" axis whereby as the volatilizable substance evaporates, the weight means angularly rotates in said sixth "x-y" plane about said "z" axis leaving its initial position (xo, yo, zo) at the first upper "y" axis location and finally coming to rest at a second lower "y" axis location (xf, yf, zo) which is visibly detectable from said window means, the angular velocity of said weight means being at least in part a function of the rate of elimination from said unit of said volatilizable substance.
5. A multi-layer sequentially timed release polyfunctional volatilizable substance delivery article comprising a plurality of concentric or coaxial neighboring matrix layers, said layers (i) having a finite thickness having a finite thickness vector t and two matrix surfaces each of which is substantially perpendicular to said thickness vector t; and (ii) consisting essentially of a suspension agent which is substantially non-flowable at ambient conditions containing at least one volatilizable substance capable of emission from a matrix surface, a surface of one matrix layer being, prior to use of said article, contiguous with a surface of its neighboring matrix layer, whereby on use of said article, the outermost matrix layer initially evolves its contained volatilizable substance at a rate substantially greater than the rate at which its neighboring matrix layer evolves its contained volatilizable substance until such point in time that sufficient volatilizable substance contained in the outermost matrix layer has been evolved into the environment surrounding said article, that a substantial portion of the surface of the neighboring matrix layer is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of volatilizable substance from the neighboring matrix layer.
6. The multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of Claim 5 comprising:
(a) a first matrix layer (i) having a finite thickness having a finite thickness vector t1, an inner first matrix surface substantially perpendicular to said vector t1 and an outer first matrix surface substantially perpendicular to said vector t1; and (ii) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent containing a first volatilizable substance capable of emission thereof from said outer first matrix surface;
(b) a second matrix layer (i) having a finite thickness having a finite thickness vector t2, an inner second matrix surface substantially perpendicular to said vector t2 and an outer second matrix surface substantially perpendicular to said vector t2: and (ii) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent containing a second volatilizable substance capable of emission thereof from said inner second matrix surface, said inner second matrix surface being, prior to use of said article, contiguous with said outer first matrix surface whereby on use of said article said first matrix layer initially evolves said first volatilizable substance at a rate substantially greater than the rate at which said second matrix layer evolves said second volatilizable substance until such point in time that sufficient first volatilizable substance has been evolved into the environment surrounding said article, that a substantial portion of said second inner surface is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of said second volatilizable substance.
7. The multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of claim 5 having a vertically disposed "y" axis comprising:
(a) a horizontally disposed first matrix layer having a first upper matrix surface in a "x-z" plane having a maximum variable radius R1 and a first lower matrix surface in an "x-z" plane having a maximum variable radius R1', said "x-z" planes being perpendicular to said "y" axis;
(i) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent containing a first volatilizable substance capable of emission from said first upper surface;
(ii) having a horizontally disposed first "x-z"
matrix median plane having a first circumferential outer boundary located in said first "x-z" matrix median plane; and (iii) having an unbroken first side wall extending both upwardly at a distance H1 and downwardly at a distance H1' from said first circumferential outer boundary in a direction substantially perpendicular thereto on said "y".
axis, and a first outer matrix wall surface;
(b) a second horizontally disposed matrix layer coaxial with reference to said "y" axis with said first matrix layer having a second upper matrix surface in an "x-z"
plane having a maximum variable radius R2 initially substantially co-circumferential with, contiguous with and substantially coplanar with said first lower matrix surface of said first matrix layer, and a second lower matrix surface in an "x-z" plane having a maximum variable radius R2' substantially parallel to said second upper matrix surface (i) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid or gel porous or non-porous suspension agent having contained therein a second volatilizable substance capable of emission from said second upper matrix surface;
(ii) having a horizontally disposed second "x-z"
matrix median plane having a second circumferential outer boundary located in said second "x-z" matrix median plane, said second "x-z" matrix median plane being substantially parallel to and coaxial with said first "x-z"
matrix median plane with reference to said "y"
axis; and (iii) having an unbroken second side wall extending upwardly at a distance H2 and downwardly at a distance H2' from said second circumferential outer boundary in a direction substantially perpendicular thereto on said "y" axis; and having a second outer matrix wall surface;
(c) a volatilizable substance-impervious laminar support means for supporting said second matrix layer, said support means (i) having an upper support surface located in an "x-z' plane having a maximum radius R3 perpendicular to said "y" axis; said upper support surface being initially contiguous with and substantially coplanar with said second lower matrix surface;
(ii) having a horizontally disposed "x-z" support median plane having a third circumferential outer boundary located in said "x-z" support median plane; and (iii) having an unbroken volatilizable substance-impervious third side wall extending upwardly at a distance Hs which is greater than or equal to H1 + H1' + H2 + H2' from said third circumferential outer boundary, said third side wall having an inner surface, said inner surface being initially contiguous with and parallel to said first outer matrix wall surface and said second outer matrix wall surface, whereby on use of said article, said first matrix layer evolves first volatilizable substance initially at a rate substantially greater than said second matrix layer evolves said second volatilizable substance; radii R1 and R1' diminish at a rate greater than the rate of diminishment of radii R2 and R2' thereby enabling the emission at an increasing rate of said second volatilizable substance.
8. The multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of Claim 5 having a vertically disposed "y" axis comprising:
(a) a vertically disposed first matrix mass (i) having a first unbroken side wall of length H1 substantially parallel to and circumferential with reference to said "y" axis which side wall has a first outer side wall surface;
(ii) having a first upper matrix surface horizontally disposed in an "x-z" plane;
(iii) having a first lower matrix surface horizontally disposed in an "x-z" plane, each of said "x-z"
planes being perpendicular to said "y" axis and parallel to one another;
(iv) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid porous or non-porous suspension agent containing a first volatilizable substance capable of emission from said outer side wall surface;
(v) covering said first upper matrix surface and said first lower matrix surface, volatilizable substance-impervious permanently affixed laminae having surfaces in the "x-z" plane coplanar and substantially contiguous with the first upper and lower matrix surfaces;
(b) a vertically disposed second matrix mass coaxial with said first matrix mass;
(i) having a second unbroken inner side wall initially coterminous with said first unbroken side wall of said first matrix mass having an initial length L1, circumferential with reference to said "y" axis, and having its surface contiguous with said first outer side wall surface of said first matrix mass; and (ii) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid porous or non-porous suspension agent containing a second volatilizable substance capable of emission from said second outer side wall surface, whereby on use of said article, said second matrix mass initially evolves said second volatilizable substance initially at a rate substantially greater than said first matrix mass evolves said first volatilizable substance until such point in time that sufficient second volatilizable substance has been evolved into the environment surrounding said article that a substantial portion of said first outer side wall is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of said first volatilizable substance.
9. The concentric multi-layer sequentially timed release polyfunctional volatilizable substance delivery article of Claim 5 having a fixed geometric centroid comprising:
(a) a first matrix mass (i) having a first matrix outer surface, the points on which are at a range of distances Ra-Rb from said geometric centroid; and (ii) consisting essentially of a first continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid, porous or non-porous suspension agent containing a first volatilizable substance capable of emission from said first matrix outer surface;
(b) a second matrix mass concentric with said first matrix mass (i) having a second matrix inner surface contiguous with said first matrix outer surface;
(ii) having a thickness range of T1-T2:
(iii) having a second matrix outer surface the points on which are at a range of distances Ra + T1 to Rb + T2 from said geometric centroid; and (iv) consisting essentially of a second continuous, discontinuous non-particulate or discontinuous particulate solid, semi-solid, porous or non-porous suspension agent containing a second volatilizable substance capable of emission from said second matrix outer surface, whereby on use of said article said second matrix mass initially evolves said second volatilizable substance at a rate substantially greater than said first matrix mass evolves said first volatilizable substance until such point in time that sufficient second volatilizable substance has been evolved into the environment surrounding said article that a substantial portion of said first outer surface is at least constructively exposed to the surrounding environment thereby permitting a substantial increase in the rate of emission of said first volatilizable substance.
10. A shaving stick formulation comprising:
(i) from about 1 up to about 10% by weight of a nonionic wetting agent;
(ii) from about 1 up to about 15% by weight of a silicone copolymer;
(iii) from about 0.1 up to about 1% by weight of a polyoxyethylene polymer slip agent;
(iv) from about 1 up to about 30% of a synthetic detergent;
(v) from about 2 up to about 10% by weight of a whitening agent; and (vi) from about 5 up to about 20% by weight of an emollient moisturizer and hair lubricant with the remainder being a mixture of stearic acid and triethanolamine.
11. The composition of Claim 10 wherein the weight ratio of stearic acid:triethanolamine is about 10:1.
12. A shaving stick article comprising the formulation of Claim 10.
13. A shaving stick article comprising the formulation of Claim 11.
14. The formulation of Claim 10 wherein the whitening agent is titanium dioxide.
15. The formualtion of Claim 11 wherein the whitening agent is titanium dioxide.
16. A solid phase shaving stick formulation for use in forming a solid phase shaving stick article, said formulation enabling the continuous retention of the solid phase of said article at ambient conditions prior to, during and subsequent to use thereof, consisting essentially of:
(i) from about 1 up to about 10% by weight of a nonionic wetting agent;
(ii) from about 1 up to about 15% by weight of a silicone copolymer;
(iii) from about 0.1 up to about 1% by weight of a polyoxyethylene polymer slip agent;
(iv) from about 1 up to about 30% by weight of a synthetic detergent:
(v) from about 2 up to about 10% by weight of a whitening agent; and (vi) from about 5 up to about 20% by weight of an emollient moisturizer and hair lubricant with the remainder being a mixture of stearic acid and triethanolamine.
17. The composition of Claim 16 wherein the weight ratio of stearic acid:triethanolamine is about 10:1.
18. A shaving stick article comprising the formulation of Claim 16.
19. A shaving stick article comprising the formulation of Claim 17.
20. The formulation of Claim 16 wherein the whitening agent is titanium dioxide.
21. The formulation of Claim 17 wherein the whitening agent is titanium dioxide.
22. A method for forming a solid phase shaving stick article which continuously retains the solid phase at ambient conditions prior to, during and subsequent to the use thereof, comprising the steps of:
(i) intimately admixing stearic acid, an emollient moisturizer, a synthetic detergent and a nonionic wetting agent thereby forming a first mixture;
(ii) heating the first mixture until a melt is formed thereby forming a first melt;
(iii) admixing a whitening agent with said first melt thereby forming a second mixture;
(iv) intimately admixing a silicone copolymer, a hair lubricant, a polyoxyethylene polymer slip agent and triethanolamine in order to form a third mixture;
(v) heating said third mixture until a second melt is formed;
(vi) mixing said second melt with a synthetic detergent thereby forming a fourth mixture;
(vii) intimately admixing said fourth mixture with said second mixture thereby forming a fifth mixture;
(viii) admixing said fifth mixture with a perfume material thereby forming a sixth mixture; and (ix) pouring said sixth mixture into molds and allowing the resulting articles to cool and harden whereby the resulting shaving stick formulation consists essentially of:
(i) from about 1 up to about 10% by weight of a nonionic wetting agent;
(ii) from about 1 up to about 15% by weight of a silicone copolymer;
(iii) from about 0.1 up to about 1% by weight of a polyoxyethylene polymer slip agent;
(iv) from about 1 up to about 30% of a synthetic detergent;
(v) from about 2 up to about 10% by weight of a whitening agent; and (vi) from about 5 up to about 20% by weight of an emollient moisturizer and hair lubricant with the remainder being triethanolamine stearate.
23. The process of Claim 22 wherein the whitening agent is titanium dioxide.
24. A method of applying the solid shaving stick formulation of Claim 16 which method comprises the steps of:
(a) carrying out the process comprising the steps of:
(i) intimately admixing the stearic acid, an emollient moisturizer, a synthetic detergent and a nonionic wetting agent thereby forming a first mixture (ii) heating the first mixture until a melt is formed thereby forming a first melt;
(iii) admixing a whitening agent with said first melt thereby forming a second mixture;
(iv) intimately admixing a silicone copolymer, a hair lubricant, a polyoxyethylene polymer slip agent and triethanolamine in order to form a third mixture;
(v) heating said third mixture until a second melt is formed;
(vi) mixing said second melt with a synthetic detergent thereby forming a fourth mixture;
(vii) intimately admixing said fourth mixture with said second mixture thereby forming a fifth mixture;
(viii) admixing said fifth mixture with a perfume material thereby forming a sixth mixture; and (ix) pouring said sixth mixture into molds and allowing the resulting articles to cool and harden (b) applying the resulting shaving stick to skin to be shaved and (c) shaving the skin after such application.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/805,021 US5139864A (en) | 1991-11-11 | 1991-11-11 | Multi-layer, multi-functional volatilizable substance delivery articles |
| US805,021 | 1991-11-11 | ||
| US805,020 | 1991-11-12 | ||
| US07/805,020 US5174992A (en) | 1991-12-11 | 1991-12-11 | Method for forming a solid phase shaving stick article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2077251A1 CA2077251A1 (en) | 1993-05-12 |
| CA2077251C true CA2077251C (en) | 1997-11-18 |
Family
ID=27122747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2077251 Expired - Fee Related CA2077251C (en) | 1991-11-11 | 1992-08-31 | Odorant and cosmetic dispensing articles |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2077251C (en) |
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| USD650892S1 (en) | 2010-10-29 | 2011-12-20 | American Covers, Inc. | Vent stick air freshener |
| USD664246S1 (en) | 2009-12-30 | 2012-07-24 | American Covers, Inc. | Rotatable and adjustable air freshener |
| US8251299B1 (en) | 2010-10-29 | 2012-08-28 | American Covers, Inc. | Screw top air freshener |
| US8460609B1 (en) | 2003-02-28 | 2013-06-11 | American Covers, Inc. | Vent stick air freshener with grip head |
| USD684675S1 (en) | 2012-10-23 | 2013-06-18 | American Covers, Inc. | Dual axis vent rod air freshener |
| US8480960B2 (en) | 2003-02-28 | 2013-07-09 | American Covers, Inc. | Air freshener clip with head |
| USD689181S1 (en) | 2012-10-23 | 2013-09-03 | American Covers, Inc. | Air freshener container |
| US8662480B1 (en) | 2010-10-29 | 2014-03-04 | American Covers, Inc. | Fan powered air freshener automobile power outlet |
| US8673223B1 (en) | 2010-10-29 | 2014-03-18 | American Covers, Inc. | Fan powered air freshener automobile visor clip |
| US8685330B2 (en) | 2005-10-31 | 2014-04-01 | American Covers, Inc. | Air freshener flower with vent stick |
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| US8460609B1 (en) | 2003-02-28 | 2013-06-11 | American Covers, Inc. | Vent stick air freshener with grip head |
| US8480960B2 (en) | 2003-02-28 | 2013-07-09 | American Covers, Inc. | Air freshener clip with head |
| US8685330B2 (en) | 2005-10-31 | 2014-04-01 | American Covers, Inc. | Air freshener flower with vent stick |
| US8851396B2 (en) | 2009-01-27 | 2014-10-07 | American Covers, Inc. | Dual scent air freshener with manual combiner |
| USD664246S1 (en) | 2009-12-30 | 2012-07-24 | American Covers, Inc. | Rotatable and adjustable air freshener |
| US8485454B1 (en) | 2009-12-30 | 2013-07-16 | American Covers, Inc. | Rotatable and adjustable air freshener |
| US8251299B1 (en) | 2010-10-29 | 2012-08-28 | American Covers, Inc. | Screw top air freshener |
| USD650892S1 (en) | 2010-10-29 | 2011-12-20 | American Covers, Inc. | Vent stick air freshener |
| US8662480B1 (en) | 2010-10-29 | 2014-03-04 | American Covers, Inc. | Fan powered air freshener automobile power outlet |
| US8673223B1 (en) | 2010-10-29 | 2014-03-18 | American Covers, Inc. | Fan powered air freshener automobile visor clip |
| US8851349B2 (en) | 2011-01-10 | 2014-10-07 | American Covers, Inc. | Frictional holding pad with inclinded grip |
| US9155811B1 (en) | 2011-12-02 | 2015-10-13 | American Covers, Inc. | Packaged vent stick air freshener with custom head |
| US9144621B1 (en) | 2012-01-10 | 2015-09-29 | American Covers, Inc. | Air freshener canister with pull top |
| USD689181S1 (en) | 2012-10-23 | 2013-09-03 | American Covers, Inc. | Air freshener container |
| USD684675S1 (en) | 2012-10-23 | 2013-06-18 | American Covers, Inc. | Dual axis vent rod air freshener |
| US9042712B2 (en) | 2012-10-23 | 2015-05-26 | American Covers, Inc. | Heated air freshener for 12V receptacle |
| US9138502B2 (en) | 2012-10-23 | 2015-09-22 | American Covers, Inc. | Air freshener with decorative insert |
| US9399080B2 (en) | 2012-10-23 | 2016-07-26 | American Covers, Inc. | Heated air freshener with power port for 12v receptacle |
| USD711521S1 (en) | 2013-04-15 | 2014-08-19 | American Covers, Inc. | Skull on dog tag shaped air freshener |
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| Publication number | Publication date |
|---|---|
| CA2077251A1 (en) | 1993-05-12 |
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