Razor blade unit

Patent metadata

Field	Value
Publication number	US-9227331-B2
Application number	US-201314029975-A
Country	US
Kind code	B2
Filing date	Sep 18, 2013
Priority date	Nov 6, 2012
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

A razor blade unit including a housing having a top surface, and a loop disposed on the top surface, the loop having two terminal ends and two exposed opposing edges between the two terminal ends. The loop intersects the top surface at the two terminal ends and the two terminal ends are spaced apart from each other on the top surface. At least a portion of at least one of the two exposed opposing edges has a cutting edge. The razor blade unit provides improved conformity to skin contours.

First claim

What is claimed is:

1. A razor blade unit comprising:
a) a housing comprising a top surface; and
b) a plurality of loops disposed on said top surface, each loop comprising two terminal ends and two exposed opposing edges extending between said two terminal ends, wherein each loop intersects said top surface at said two terminal ends, wherein said two terminal ends are spaced apart from each other on said top surface, wherein at least a portion of one of said two exposed opposing edges has a cutting edge, and
wherein the plurality of loops are connected to one another at their respective terminal ends via a plurality of spacers to form an integrated plurality of loops, wherein each loop of said integrated plurality of loops is separated by a spacer of said plurality of spacers, and wherein said integrated plurality of loops is attached to said housing.

2. The razor blade unit according to claim 1 , wherein material forming said loop has a thickness, in a non-cutting edged portion, of from about 1 micron to about 200 microns and comprises a material selected from the group consisting of steel, polymer, ceramic, and a combination thereof.

3. The razor blade unit according to claim 2 , wherein material forming said loop comprises steel having a thickness, in a non-cutting edged portion, of from about 5 microns to about 20 microns, or material forming said loop comprises polymer having a thickness, in a non-cutting edged portion, of from about 30 microns to about 100 microns.

4. The razor blade unit according to claim 1 , wherein said loop, in a non-compressed state, defines a hole, wherein said hole is substantially an oval and has a cross sectional area of from about 1 mm 2 to about 400 mm 2 .

5. The razor blade unit according to claim 1 , wherein said top surface comprises from about 1 to about 50 loops in a 100 mm 2 surface area.

6. The razor blade according to claim 1 , wherein when shaving loads are applied, said cutting edge is configured to respond to said shaving loads by deflecting from a plane that is normal to the shaving surface within an angle of from about 0 degree to about 30 degrees.

7. The razor blade unit according to claim 1 , wherein said cutting edge, in a non-compressed state, is configured to have an angle of from about 0 degree to about 30 degrees to a shaving surface.

8. The razor blade unit according to claim 7 , wherein the plurality of said loops is arranged in a non-linear pattern selected from the group consisting of a circular pattern, oval pattern, triangular pattern, rectangular pattern, trapezoidal pattern, pentagonal pattern, hexagonal pattern, and a combination thereof.

9. The razor blade unit according to claim 1 , wherein the plurality of said loops is arranged in linear patterns to form from about 1 to about 50 rows of loops, and wherein each of said rows of loops comprises from about 5 to about 200 of said loops.

10. The razor blade unit according to claim 9 , wherein said loops in alternate rows are staggered relative to one another.

11. The razor blade unit according to claim 1 , wherein each of said two exposed opposing edges has a cutting edge.

12. The razor blade according to claim 1 , wherein said loops have holes of different cross sectional areas so as to form a three-dimensional surface of cutting edges.

13. The razor blade unit according to claim 1 , wherein said two terminal ends of said loop are attached to said top surface.

14. The razor blade unit according to claim 1 , wherein said spacer has an inverse loop shape.

15. The razor blade unit according to claim 14 , comprising one or more groups of said integrated plurality of loops.

16. The razor blade unit according to claim 15 , wherein said housing comprises a channel below said top surface, and wherein at least a portion of said plurality of spacers is contained in said channel.

17. A razor comprising the razor blade unit according to claim 1 .

Assignees

• Gillette Co

Inventors

• Zhuk Andrew Vladimirovich
• Claus Oliver Heinz
• Estabrooks Caleb Maccallum

Classifications

• B26B21/565 Primary

  Bent razor blades; Razor blades with bent carriers · CPC title

• B26B21/22 Primary

  involving several blades to be used simultaneously · CPC title

• B21D53/645

  safety razor blades · CPC title