Razor cartridge with non-cutting element

Patent metadata

Field	Value
Publication number	US-10562198-B2
Application number	US-96843310-A
Country	US
Kind code	B2
Filing date	Dec 15, 2010
Priority date	Dec 18, 2009
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A novel razor cartridge includes at least one non-cutting element disposed anywhere within a blade array between a guard and a cap and/or in a blade position of a frame providing skin/hair management. This non-cutting element allows the fine-tuning of parameters such as blade-skin contact, hair orientation, blade spans and rinse-through gaps in manners that improve shaving comfort, closeness, efficiency, and/or rinse-ability. The non-cutting element may include projections, fin-like elements, comb-like features having teeth, exfoliation or lubricating capabilities. By having a fixed non-cutting element disposed midway in a blade array, a multi-stage cartridge is provided with a middle control point with potentially different functionality before and after the non-cutting element. The non-cutting element is not attached to another blade in the blade array though it may be manufactured as a modified blade support, attached to a blade support, or as part of the frame or the clips.

First claim

What is claimed is:

1. A razor cartridge comprising:
one or more razor blades, each of said razor blades having a cutting edge;
at least one non-cutting element;
a frame having a plurality of blade positions wherein each of said one or more razor blades and each of said at least one non-cutting element is disposed in a separate one of said plurality of blade positions such that every razor blade is spaced apart from each said at least one non-cutting element, wherein each said cutting edge of said one or more razor blades is directed toward a front of said cartridge and wherein a rinse-through gap is provided immediately before and immediately after said at least one non-cutting element.

2. The razor cartridge of claim 1 wherein said at least one non-cutting element is disposed in any of said blade positions of said frame.

3. The razor cartridge of claim 1 wherein each said cutting edge of said razor blades faces in the same direction.

4. The razor cartridge of claim 1 wherein said at least one non-cutting element is not attached to any of said one or more blades.

5. The razor cartridge of claim 1 wherein each of said blade positions comprises a slot, an opening, or any combination thereof.

6. The razor cartridge of claim 1 wherein a portion of said at least one non-cutting element is contiguous, non-contiguous, planar, non-planar, rigid, flexible, semi-rigid, or any combination thereof.

7. The razor cartridge of claim 1 wherein said at least one non-cutting element is comprised of at least one polymeric, elastomeric, urethane, olefin, rubber, textile, natural, metal, foam, sponge, lubricant, shaving aid, or exfoliation material, or any combination thereof.

8. The razor cartridge of claim 1 wherein said at least one non-cutting element is a modified blade support.

9. The razor cartridge of claim 1 wherein an upper surface of said at least one non-cutting element comprises at least one feature selected from the group consisting of a plurality of projections defining at least one open slot, protrusions, elongated filaments, nubs, fins, waves, curves, depressions, hair-like elements, one or more hook-like structures, one or more lubricating strips, one or more foams, one or more exfoliation materials, one or more shaving aid materials, one or more comb-like features having a plurality of teeth, any of the aforementioned spaced apart or interconnected, constant or variable in dimension, upstanding, curved, angled right, angled left, or angled to a center, or any combinations thereof.

10. The razor cartridge of claim 9 where an upper surface of said at least one non-cutting element comprises a plurality of teeth defining a plurality of open slots extending generally transverse to the cutting edge, wherein said open slots have a width from about 0.10 mm to about 2.00 mm for allowing the free passage of hair during shaving.

11. The razor cartridge of claim 10 wherein said teeth have a height of about 0.10 mm to about 2.00 mm, a width of about 0.10 mm to about 2.00 mm, and a length of about 0.075 mm to about 0.25 mm.

12. The razor cartridge of claim 1 where an upper surface of said at least one non-cutting element comprises a plurality of projections defining a plurality of open slots extending generally transverse to the cutting edge, wherein said open slots have a width from about 0.10 mm to about 0.50 mm for allowing the free passage of hair during shaving.

13. The razor cartridge of claim 12 wherein said projections have a height of about 0.25 mm to about 1.00 mm, a width of about 0.15 mm to about 1.00 mm, and a length of about 0.3 mm to about 1.50 mm.

14. A razor cartridge comprising:
a blade array comprising one or more razor blades, each of said blades having a cutting edge; and
at least one non-cutting element disposed in said blade array wherein said at least one non-cutting element is not attached to any of said one or more blades such that every razor blade is spaced apart from each said at least one non-cutting element, wherein each said cutting edge of said one or more razor blades is directed toward a front of said cartridge and wherein a rinse-through gap is provided immediately before and immediately after said at least one non-cutting element.

15. A razor cartridge comprising:
a first stage comprising a guard, at least one razor blade and at least one non-cutting element, and wherein a rinse-through gap is provided immediately before and immediately after said at least one non-cutting element; and
a second stage comprising said at least one non-cutting element, at least one razor blade and a cap, wherein said at least one non-cutting element is disposed anywhere between said guard and said cap and every razor blade is spaced apart from each said at least one non-cutting element, wherein each cutting edge of said at least one razor blade is directed toward a front of said cartridge.

16. The razor cartridge of claim 15 wherein said non-cutting element may be formed from two non-cutting members.

17. The razor cartridge of claim 15 wherein said non-cutting element comprises cap capabilities adjacent said first stage and guard capabilities adjacent said second stage.

18. The razor cartridge of claim 15 wherein spans between said blades in said second stage are narrower than spans between said blades in said first stage.

19. The razor cartridge of claim 15 wherein a span between said non-cutting element and said at least one razor blade in said second stage directly behind said non-cutting element is about 50 μm.

20. The razor cartridge of claim 15 wherein a blade tangent angle of at least one of said blades in said second stage is higher than a blade tangent angle of said blades in said first stage.

21. The razor cartridge of claim 15 wherein at least one of said blades in said second stage has a negative exposure relative to said non-cutting element.

22. A method of manufacturing a razor cartridge comprising the steps of:
coupling at least one non-cutting element with at least one razor component in a position of said cartridge; and
inserting a plurality of razor blades into positions of said cartridge, wherein every razor blade is spaced apart from each said at least one non-cutting element, wherein each cutting edge of said plurality of razor blades is directed toward a front of said cartridge, wherein a rinse-through gap is provided immediately before and immediately after said at least one non-cutting element, and wherein said razor component is a frame, at least one clip, or any combination thereof, and said coupling further comprises injection molding, machining, mechanical attachment, chemical attachment, or any combination thereof.

Assignees

• Clarke Sean Peter
• Patel Ashok Bakul
• Stone Matthew Robert
• Gillette Co Llc

Inventors

• Clarke Sean Peter
• Patel Ashok Bakul
• Stone Matthew Robert

Classifications

• B26B21/4031

  characterised by special geometric shaving parameters, e.g. blade span or exposure · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• B26B21/4012

  Housing details, e.g. for cartridges · CPC title

• B26B21/4018

  Guard elements · CPC title

• B26B21/443

  Lubricating strips attached to the razor head · CPC title