Shaving system

• US 6,442,839 B1
• Filed: 09/13/2000
• Issued: 09/03/2002
• Est. Priority Date: 02/27/1997
• Status: Expired due to Term

• Current Assignee: The Gillette Company LLC (The Procter & Gamble Company)
• Original Assignee: Gillette Company (The Procter & Gamble Company)
• Inventors: Kwiecien, Michael J., Tseng, Mingchih M.
• Primary Examiner(s): Watts, Douglas D.
• Application Number:
  US09/660,752
• Time in Patent Office: 720 Days
• Field of Search: 30/41, 305/37, 30/340.5
• US Class Current: 30/41
• CPC Class Codes: A61K 2800/87 Application Devices; Containers; Packaging
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61Q 9/02 Shaving preparations
• CPC Class Codes: B26B 21/443 Lubricating strips attached to the razor head

Abstract

A shaving unit includes a composite that has a surface for engaging the user'"'"'s skin. The composite includes adjacent lengthwise-extending portions, each containing a shaving aid.

Claims

1. A wet shaving system comprising a blade member and a skin-engaging portion in proximity to said blade member, said skin-engaging portion comprising, prior to first use of the wet shaving system, a solid polymeric shaving aid composite including a first exposed lengthwise-extending portion containing a first shaving aid, and an adjacent, second exposed lengthwise-extending portion containing a second shaving aid, wherein said first exposed lengthwise-extending portion has a different composition than said second exposed lengthwise-extending portion.

2. The shaving system of claim 1, wherein said first shaving aid and said second shaving aid are the same.

3. The shaving system of claim 1, wherein said first shaving aid is different from second shaving aid.

4. The shaving system of claim 1, wherein said first portion further comprises a first water-insoluble polymer and said second portion further comprises a second water-insoluble polymer.

5. The shaving system of claim 4 wherein said first shaving aid and said second shaving aid each comprise polyethylene oxide.

6. The shaving system of claim 5, wherein said first water-insoluble polymer and said second water-insoluble polymer independently are selected from the group consisting of polyethylene, polypropylene, polystyrene, butadiene-styrene copolymer, polyacetal, acrylonitrile-butadiene-styrene copolymer, and ethylene vinyl acetate copolymer.

7. The shaving system of claim 1, wherein said first shaving aid is different from said second shaving aid and said first portion includes, in addition to said first shaving aid, a further shaving aid which is the same as said second shaving aid.

8. The shaving system of claim 7, wherein said further shaving aid and said second shaving aid each comprise polyethylene oxide.

9. The shaving system of claim 1, wherein said shaving aid composite further comprises a third, exposed lengthwise-extending portion, containing a third shaving aid, adjacent said first portion, such that said first portion is located between said second and third portions.

10. The shaving system of claim 9, wherein said second shaving aid and said third shaving aid comprises polyethylene oxide.

11. The shaving system of claim 10, wherein said first shaving aid comprises Vitamin E or aloe.

12. The shaving system of claim 11, wherein said first shaving aid further comprises polyethylene oxide.

13. The shaving system of claim 12, wherein said first portion, said second portion, and said third portion each further comprises a water-insoluble polymer.

14. The shaving system of claim 9, wherein said first portion comprises about 10% to about 40% by weight of water-insoluble polymer and about 20% to about 80% of polyethylene oxide, and wherein said second portion and said third portion each comprises about 15% to about 40% of water-insoluble polymer and about 20% to about 80% of polyethylene oxide.

15. The shaving system of claim 14, wherein said water-insoluble polymer is selected from the group consisting of polyethylene, polypropylene, polystyrene, butadienestyrene copolymer, polyacetal, acrylonitrile-butadiene-styrene copolymer, and ethylene vinyl acetate copolymer.

16. The shaving system of claim 9, wherein said second portion and said third portion provide support for said first portion.

17. The shaving system of claim 9, wherein said first portion further includes a colorant that is released during shaving.

18. The shaving system of claim 9, wherein said second portion and said third portion further comprise a colorant that is released during shaving.

19. The shaving system of claim 9, wherein said shaving aid composite includes a connecting portion that extends under said first portion and connects said second portion and said third portion.

20. The shaving system of claim 19, wherein said connecting portion, said second portion, and said third portion have the same composition.

21. The shaving system of claim 1, wherein said first portion and said second portion each has a length of about 1.20 inches to 1.35 inches.

22. The shaving system of claim 1, wherein said first portion and said second portion each has a width of about 0.02 inch to 0.04 inch.

23. The shaving system of claim 9 wherein said first portion contains a larger quantity of shaving aid than said second and third portions.

24. The shaving system of claim 23 wherein said first, second and third shaving aids each comprise polyethylene oxide.

25. The wet shaving system of claim 1, wherein said second portion is a different color than said first portion so that said shaving aid composite has a striped appearance caused by the contrast between said first and second portions.

26. The shaving system of claim 25, wherein said first portion is adapted to gradually wear away during shaving, thereby indicating that said first shaving aid is depleted.

27. The shaving system of claim 25, wherein said shaving aid composite further comprises a third, exposed lengthwise-extending portion, containing a third shaving aid, adjacent said first portion, such that said first portion is located between said second and third portions.

28. The shaving system of claim 27, wherein said shaving aid composite includes a connecting portion that extends under said first portion and connects said second portion and said third portion.

29. The shaving system of claim 28, wherein said connecting portion, said second portion and said third portion have the same composition.

30. The shaving system of claim 25, wherein said first portion comprises about 10% to about 40% by weight water-insoluble polymer and about 20% to about 80% polyethylene oxide, and wherein said second portion and said third portion each comprise about 15% to about 40% water-insoluble polymer and about 20% to about 80% polyethylene oxide.

31. The shaving system of claim 25, wherein said second portion is raised relative to said first portion.

32. The shaving system of claim 25, wherein said first portion extends under said second portion.

33. A wet shaving system comprising a blade member and a skin-engaging portion in proximity to said blade member, said skin-engaging portion comprising, prior to first use of the wet shaving system, a solid polymeric shaving aid composite including a first exposed lengthwise-extending portion containing a first shaving aid, and an adjacent, second exposed lengthwise-extending portion containing a second shaving aid, wherein said second exposed lengthwise-extending portion is a different color than said first exposed lengthwise-extending portion so that said shaving aid composite has a striped appearance caused by the contrast between said first and second portions.

34. The shaving system of claim 33, wherein said first shaving aid and said second shaving aid are the same.

35. The shaving system of claim 34, wherein said first portion further comprises a first water-insoluble polymer and said second portion further comprises a second water-insoluble polymer.

36. The shaving system of claim 35, wherein said first shaving aid and said second shaving aid each comprise polyethylene oxide.

37. The shaving system of claim 36, wherein said first water-insoluble polymer and said second water-insoluble polymer independently are selected from the group consisting of polyethylene, polypropylene, polystyrene, butadiene-styrene copolymer, polyacetal, acrylonitrile-butadiene-styrene copolymer, and ethylene vinyl acetate copolymer.

38. The shaving system of claim 33, wherein said shaving aid composite further comprises a third, exposed lengthwise-extending portion, containing a third shaving aid, adjacent said first portion, such that said first portion is located between said second and third portions.

39. The shaving system of claim 38, wherein said third portion is the same as said second portion.