Personal grooming device having a tarnish resistant, hypoallergenic and/or antimicrobial silver alloy coating thereon
View Patent ↗The present disclosure is generally directed to a personal grooming product or device (e.g., foil shaver, rotary shaver, etc.) having a metal coating on one or more surfaces thereof, the grooming product being designed for contacting the skin (e.g., the human hand or face, or the skin of an animal, such as during the act of pet grooming). More specifically, the present disclosure is directed to a personal grooming product or device having a layer of some measurable thickness on such a surface, wherein the layer comprises or contains a tarnish resistant, hypoallergenic and/or antimicrobial silver-containing alloy.
1. A personal grooming device comprising a metal component having a coating directly formed on a surface of the metal component for contacting the skin, wherein the coating is a tarnish resistant, antimicrobial coating comprising an alloy comprising silver and indium, wherein the alloy has a concentration of silver of at least about 50 weight percent, based on the total weight of the alloy and wherein said device is selected from the group consisting of a shaver, a hair clipper, and a razor.
2. The personal grooming device of claim 1 , wherein the coating has a thickness of at least about 0.1 microns.
3. The personal grooming device of claim 1 , wherein the coating has a thickness of less than about 10 microns.
4. The personal grooming device of claim 1 , wherein the coating has a hardness of at least about 200Hv, under a load of about 5 mN.
5. The personal grooming device of claim 1 , wherein the coating has a hardness of at least about 300Hv, under a load of about 5 mN.
6. The personal grooming device of claim 1 , wherein the coating has a silver concentration of at least about 60 weight percent, based on the total weight of the alloy.
7. The personal grooming device of claim 1 , wherein the coating has a silver concentration of at least about 70 weight percent, based on the total weight of the alloy.
8. The personal grooming device of claim 1 , wherein the coating has a silver concentration of at least about 80 weight percent, based on the total weight of the alloy.
9. The personal grooming device of claim 1 , wherein the coating has a silver concentration of at least about 90 weight percent, based on the total weight of the alloy.
10. The personal grooming device of claim 1 , wherein the coating has a silver concentration of at least about 92.5 weight percent, based on the total weight of the alloy.
11. The personal grooming device of claim 1 , wherein the coating has a silver concentration of at least about 92.75 weight percent and less than about 95 weight percent, based on the total weight of the alloy.
12. The personal grooming device of claim 1 , wherein the coating comprises an alloy of silver, indium and a metal selected from the group consisting of zinc, tin, and/or a combination thereof.
13. The personal grooming device of claim 12 , wherein the sum of the concentrations of silver, indium and a metal selected from the group consisting of zinc, tin, or a combination thereof is at least about 75 weight percent, based on the total weight of the alloy.
14. The personal grooming device of claim 1 , wherein the coating comprises an alloy of silver, indium and a metal selected from the group consisting of aluminum, magnesium, and/or a combination thereof.
15. The personal grooming device of claim 14 , wherein the sum of the concentrations of silver, indium and a metal selected from the group consisting of aluminum, magnesium, and/or a combination thereof is at least about 75 weight percent, based on the total weight of the alloy.
16. The personal grooming device of claim 1 , wherein the coating comprises an alloy of silver, indium and a metal selected from the group consisting of copper, manganese, iron, nickel, lithium, silicon, boron, phosphorus, titanium, iridium, cobalt, and/or a combination thereof.
17. The personal grooming device of claim 16 , wherein the sum of the concentrations of silver, indium and a metal selected from the group consisting of copper, manganese, iron, nickel, lithium, silicon, boron, phosphorus, titanium, iridium, cobalt, and/or a combination thereof is at least about 75 weight percent, based on the total weight of the alloy.
18. The personal grooming device of claim 1 , wherein the device is a shaver.
19. The shaver of claim 18 , wherein the shaver comprises a shaver component, wherein said shaver component is suitable for use in an electric shaver.
20. The shaver of claim 19 , wherein said shaver component is a metal shaver component suitable for use in a foil shaver, said metal component being selected from the group consisting of an outer cutter foil, an inner cutter, and a trimmer.
21. The shaver of claim 18 , wherein the shaver comprises a metal shaver component, wherein said metal shaver component is suitable for use in a rotary shaver, said metal component being is selected from the group consisting of a rotary shaving head, a trimmer, and a rotary cutting blade.
22. The personal grooming device of claim 1 , wherein the device is a hair clipper.
23. The clipper or groomer of claim 22 , wherein said hair clipper metal component is a metal component selected from the group consisting of a reciprocating blade and a fixed blade.
24. The personal grooming device of claim 1 , wherein the coated metal component is designed for contacting the human skin.
25. The personal grooming device of claim 1 , wherein the coated metal component is designed for contacting the skin of an animal.
26. The personal grooming device of claim 1 , wherein the personal grooming device component comprises nickel, and further wherein the coating present therein has a nickel release rate of less than about 0.5 micrograms per square centimeter per week.
27. The personal grooming device of claim 1 , wherein the coating has an antimicrobial efficacy of at least about 99%.