Shaving razors and shaving cartridges

• US 8,286,354 B2
• Filed: 07/05/2011
• Issued: 10/16/2012
• Est. Priority Date: 03/11/2004
• Status: Active Grant

• Current Assignee: The Gillette Company LLC (The Procter & Gamble Company)
• Original Assignee: Gillette Company (The Procter & Gamble Company)
• Inventors: Walker, Vincent Paul Jr., Corbeil, Corey Edward, Rawle, Stephen Leonard
• Primary Examiner(s): MICHALSKI, SEAN M
• Application Number:
  US13/176,518
• Publication Number:
  US 20110258856A1
• Time in Patent Office: 469 Days
• Field of Search: 30/50, 30/341, 30/32
• US Class Current: 30/32
• CPC Class Codes: B26B 21/225 the changeable unit being resiliently mounted on the handle
• CPC Class Codes: B26B 21/4012 Housing details, e.g. for cartridges
• CPC Class Codes: B26B 21/4018 Guard elements
• CPC Class Codes: B26B 21/4031 characterised by special geometric shaving parameters, e.g. blade span or exposure
• CPC Class Codes: B26B 21/4043 Contour trimming
• CPC Class Codes: B26B 21/4068 Mounting devices; Manufacture of razors or cartridges B26B21/528 takes precedence
• CPC Class Codes: B26B 21/521 Connection details, e.g. connection to razor heads
• CPC Class Codes: B26B 21/528 Manufacture of razor handles

Abstract

A shaving blade unit having a housing with a top surface, a bottom surface, a front edge, a rear edge and a pair of side edges extending between the front edge and the rear edge. The housing has a pair of apertures between the front edge and the rear edge. The pair of apertures extend through the housing from the top surface to the bottom surface. One or more shaving blades are disposed between the front edge and the rear edge. The one or more shaving blades each have a cutting edge. A clip has a pair of legs that extend through the pair of apertures. Each leg is bent about at least a portion of the bottom surface of the housing securing the clip to the housing and retaining the blades on the housing.

Claims

1. A shaving blade unit comprising:

a housing having a top surface, a bottom surface, a front edge, a rear edge and a pair of side edges extending between the front edge and the rear edge, the housing having at least one blade disposed between the front edge and the rear edge, the at least one blade having a cutting edge;

two pairs of apertures extending through the housing from the top surface to the bottom surface, each pair of apertures having one aperture in front of the cutting edge and one aperture behind the cutting edge in a direction perpendicular to the cutting edge; and

a pair of spaced apart clips each having a pair of legs extending through the corresponding pair of apertures, each leg is bent about at least a portion of the bottom surface of the housing securing each clip to the housing and retaining the at least one blade on the housing, wherein the cutting edge rests against each clip.

2. The shaving blade unit of claim 1, wherein each clip has a thickness of about 0.3 mm.

3. The shaving blade unit of claim 2, wherein each clip comprises aluminum.

4. The shaving blade unit of claim 1, wherein the at least one blade is spring-biased and each clip locates the cutting edge of the at least one blade at a desired exposure in a rest position.

5. The shaving blade unit of claim 1, wherein each of the legs has a straight portion.

6. The shaving blade unit of claim 1, wherein each of the legs has multiple bent portions.

7. The shaving blade unit of claim 6, wherein the multiple bent portions have a relatively short bend radius.

8. The shaving blade unit of claim 1, wherein each of the legs is bent to a curvature greater than 90 degrees.

9. The shaving blade unit of claim 1, wherein each leg is bent such that each clip generally corresponds to a shape of the housing.

10. The shaving blade unit of claim 9, wherein each leg is bent beyond its elastic limit.

11. The shaving blade unit of claim 9, wherein each leg is over bent to preload each clip against the housing.

12. The shaving blade unit of claim 1 wherein each clip is in electrical contact with the at least one blade so as to form an anode-cathode cell in which each clip functions as a sacrificial anode that corrodes and the at least one blade functions as a cathode that is protected from corrosion.

13. The shaving blade unit of claim 1 wherein a plurality of blades are disposed between the front edge and the rear edge and each of the blades has a cutting edge.

14. The shaving blade unit of claim 1 wherein the apertures are slots.

15. The shaving blade unit of claim 1, wherein the pair of spaced apart clips are positioned inboard of a front portion of a flexible elastomeric member.

16. The shaving blade unit of claim 15, wherein the front portion of the elastomeric member extends beyond a leading portion of the housing.

17. The shaving blade unit of claim 1, wherein the pair of spaced apart clips are positioned between a front portion of an elastomeric member and a rear edge of a cap comprising a lubricating member.

18. The shaving blade unit of claim 13 wherein two of the apertures are in front of each of the cutting edges and two of the apertures are behind each of the cutting edges in a direction perpendicular to the cutting edges.

19. The shaving blade unit of claim 18, wherein the pair of spaced apart clips are positioned inboard of a front portion of a flexible elastomeric member.

20. The shaving blade unit of claim 18, wherein the pair of spaced apart clips are positioned between a front portion of an elastomeric member and a rear edge of a cap comprising a lubricating member.