Shaving system with improved guard structure

• US 5,711,076 A
• Filed: 03/27/1996
• Issued: 01/27/1998
• Est. Priority Date: 03/27/1996
• Status: Expired due to Term

• Current Assignee: Gillette Company (The Procter & Gamble Company)
• Original Assignee: Gillette Company (The Procter & Gamble Company)
• Inventors: Porcaro, Alfred, Yin, Yuling, Tseng, Mingchih Michael, Sweeney, Philip John
• Primary Examiner(s): Watts, Douglas D.
• Application Number:
  US08/624,819
• Time in Patent Office: 671 Days
• Field of Search: 30/41, 30/538, 30/537, 30/50, 30/34.2, 30/34.05, 30/81, 30/77
• US Class Current: 30/41
• CPC Class Codes: B26B 21/4018 Guard elements
• CPC Class Codes: B26B 21/4087 Usage or wear indication
• CPC Class Codes: B26B 21/443 Lubricating strips attached to the razor head

Abstract

A shaving system that includes a housing, one or more blades mounted on the housing, a cap behind the blades on the housing, and a guard structure in front of the blades on the housing, the guard structure including flexible skin-engaging protrusions that engage a user'"'"'s skin in front of the blades and a water leachable shaving aid composite positioned to deliver a shaving aid to the skin behind the flexible skin-engaging protrusions.

Claims

1. A shaving system comprising

a housing,

one or more blades mounted on said housing,

a cap behind said blades on said housing, and

a guard structure in front of said blades on said housing,

said guard structure including a plurality of flexible skin-engaging protrusions to engage a user'"'"'s skin in front of said blades and a water leachable shaving aid composite positioned to deliver a shaving aid to said skin behind said flexible skin-engaging protrusions and in front of said one or more blades.

2. The shaving system of claim 1 wherein said one or more blades include a first blade immediately behind said guard structure, and said guard structure further comprises a backstop member that defines a blade exposure for said first blade.

3. The shaving system of claim 1 wherein said flexible skin-engaging protrusions comprise flexible fins extending generally parallel to said blades.

4. The shaving system of claim 1 wherein said water leachable shaving aid composite has a skin-contacting surface that extends uninterrupted for substantially the length of said one or more blades.

5. The shaving system of claim 4 wherein said one or more blades include a first blade immediately behind said guard structure, and wherein said guard structure further comprises a backstop member that defines a blade exposure for the first blade on said housing.

6. The shaving system of claim 1 wherein said water leachable shaving aid composite comprises a water-insoluble polymer and a water-soluble polymer that provides said shaving aid.

7. The shaving system of claim 6 wherein said shaving aid is a skin lubricant.

16. The shaving system of claim 1 wherein said water leachable shaving aid is contained within a cavity in said guard structure, and said guard structure has channels extending from said shaving aid to a location behind said flexible skin-engaging protrusions.

17. The Shaving system of claim 4 wherein said flexible skin-engaging protrusions extend above said water leachable shaving aid composite.

18. The shaving system of claim 17 wherein said flexible skin-engaging protrusions comprise flexible fins extending generally parallel to said one or more blades.

19. The shaving system of claim 3 wherein said fins are provided in fin segments oriented at different angles with respect to said blades.

20. The shaving system of claim 1 wherein said flexible skin-engaging protrusions are made of elastomeric material.

24. The shaving system of claim 1 wherein said one or more blades are spring-biased.

25. The shaving system of claim 1 wherein said housing includes structure for providing a pivotal mounting with respect to a handle.

26. The shaving system of claim 3 wherein said flexible skin engaging protrusions are in a pattern that provides skin-stretching effect.

8. The shaving system of claim i wherein said guard structure includes a rigid base that is anchored in said housing, and said flexible skin-engaging protrusions are on a flexible material component mounted on said rigid base.

9. The shaving system of claim 8 wherein said water leachable shaving aid composite is mounted on said rigid base and has a skin-contacting surface that extends uninterrupted for substantially the length of said one or more blades and is located behind said flexible skin engaging protrusions.

10. The shaving system of claim 9 wherein said one or more blades include a first blade immediately behind said guard structure, and wherein said guard structure further comprises a backstop member that defines a blade exposure for the first blade on said housing.

11. The shaving system of claim 8 wherein said flexible skin-engaging protrusions are on a flexible material component that has the same section extending for substantially the length of said one or more blades, and said rigid base and said flexible material component are coextruded.

12. The shaving system of claim 8 wherein said flexible skin-engaging protrusions are on a flexible material component that is molded with said rigid base.

13. The shaving system of claim 8 wherein said flexible skin-engaging protrusions are on a flexible material component that is adhesively secured to said rigid base.

14. The shaving system of claim 8 wherein said water leachable shaving aid composite is secured to said rigid base by adhesive.

15. The shaving system of claim 8 wherein said water leachable shaving aid composite is secured by a mechanical interlock.

21. The shaving system of claim 8 wherein said rigid base is made of a thermoplastic material.

22. The shaving system of claim 21 wherein said thermoplastic material is a member of the group consisting of polystyrene, high-impact polystyrene, polypropylene, acrylonitrile butadiene styrene, polycarbonate, Noryl, Nylosn.

23. The shaving system of claim 8 wherein said flexible material component is made of thermoplastic elastomer.