Shaving cartridges having lubrication members

Patent metadata

Field	Value
Publication number	US-9333658-B2
Application number	US-201313964382-A
Country	US
Kind code	B2
Filing date	Aug 12, 2013
Priority date	Aug 12, 2013
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A shaving blade unit with a housing having a bottom surface and a top surface defining a pair of elongated spaced apart apertures extending from the top surface to the bottom surface. At least one blade is mounted to the housing. The blade has a blade edge extending generally parallel to the pair of apertures. A solid polymeric lubrication member having an upper skin contact surface and an opposing base. A pair protrusions extend from the base. Each protrusion has an enlarged distal end. The enlarged distal ends of the protrusions each have a dimension greater than a dimension of the corresponding aperture whereby inserting the protrusion into the corresponding aperture deflects a front wall of the housing and each of the enlarged distal ends engage the bottom surface of the housing. The solid polymeric lubrication member and the enlarged distal ends are molded from a water soluble polymer.

First claim

What is claimed is:

1. A shaving blade unit comprising:
a housing having a bottom surface and a top surface defining a pair of elongated spaced apart apertures extending from the top surface to the bottom surface;
at least one blade mounted to the housing, the blade having a blade edge extending generally parallel to the pair of apertures;
a solid polymeric lubrication member having an upper skin contact surface and an opposing base;
a pair protrusions extending from the base, each protrusion having an enlarged distal end comprising a water soluble polymer, the enlarged distal ends of the protrusions each having a dimension greater than a dimension of the corresponding aperture wherein inserting the protrusion into the corresponding aperture deflects a front wall of the housing and each of the enlarged distal ends engage the bottom surface of the housing and the solid polymeric lubrication member and the enlarged distal ends are molded from a water soluble polymer.

2. The shaving blade unit of claim 1 wherein the solid polymeric lubrication is positioned within a pocket defined by the front wall and a pair of internal sidewalls of the housing.

3. The shaving blade unit of claim 1 wherein the pocket is further defined by an elastomeric member positioned in front of the at least one blade.

4. The shaving blade unit of claim 1 wherein each protrusion has a length that is greater than a distance measured from one of the protrusions to a lateral end of the solid polymeric lubrication member.

5. The shaving blade unit of claim 1 wherein each protrusion has a length that is greater than a distance between the protrusions.

6. The shaving blade unit of claim 1 further comprising an elastomeric member having a plurality of fins between the at least one blade and the solid polymeric lubrication member.

7. The shaving blade unit of claim 6 wherein solid polymeric lubrication member has an elongated portion in front of the fins and a pair of lateral ends that extend from the elongated portion toward the at least one blade.

8. The shaving blade unit of claim 7 wherein the fins are positioned between the pair of lateral ends of the solid polymeric lubrication member.

9. The shaving blade unit of claim 7 further comprising a clip securing the at least one blade to the housing wherein the pair of lateral ends of the solid polymeric lubrication member are axially aligned with the clips.

10. The shaving blade unit of claim 9 wherein the pair of lateral ends swell during use to contact the clip.

11. The shaving blade unit of claim 1 wherein the enlarged distal end extends toward a front edge of the housing.

12. The shaving blade unit of claim 1 further comprising a pair of metal clips securing the at least one blade to the housing wherein the pair of lateral ends of the solid polymeric lubrication member are axially aligned with the respective clips.

Assignees

• Gillette Co

Inventors

• Carneiro Hubert Francis
• Cataudella Matthew Corey
• Washington Jack Anthony

Classifications

• B26B21/443 Primary

  Lubricating strips attached to the razor head · CPC title

• B26B21/4018

  Guard elements · CPC title