Magnetic Attachment for Shaving Cartridge

• US 20130312272A1
• Filed: 07/10/2013
• Published: 11/28/2013
• Est. Priority Date: 05/25/2012
• Status: Active Grant

• Current Assignee: SL IP Company LLC, SL IP Intermediate LLC, SL Shaveco LLC
• Original Assignee: ShaveLogic, Inc.
• Inventors: Wilson, Robert A., Provost, Craig A., Griffin, John W.
• Granted Patent: US 8,789,282 B2
• Time in Patent Office: Days
• US Class Current: 30/532
• CPC Class Codes: B26B 21/14 Safety razors with one or more blades arranged transversely to the handle
• CPC Class Codes: B26B 21/225 the changeable unit being resiliently mounted on the handle
• CPC Class Codes: B26B 21/521 Connection details, e.g. connection to razor heads
• CPC Class Codes: Y10T 83/9459 Magnetic connection

Abstract

Shaving systems are disclosed that include a replaceable shaving assembly and a cartridge connecting structure for connecting the shaving assembly to a handle. In preferred implementations, the cartridge connecting structure has a magnetic portion configured to help draw the cartridge onto the handle and retain the cartridge in place when the razor is not in contact with the skin, and a mechanical engagement that provides the necessary retention forces required to keep the system intact during shaving.

Claims

1. A shaving system comprising:

a handle,

a shaving assembly mounted on the handle, and

a magnetic portion configured to provide a magnetic force between the handle and shaving assembly sufficient to retain the shaving assembly on the handle between shaving strokes.

2. The shaving system of claim 1 wherein the shaving assembly includes an interface element configured to provide a mechanical engagement between the shaving assembly and handle.

3. The shaving system of claim 2 wherein the interface element and a distal portion of the handle are configured to retain the shaving assembly on the handle when a shaving surface of the shaving assembly is in contact with a user'"'"'s skin.

4. The shaving system of claim 2 wherein the handle has a distal end and a proximal end, and includes an appendage protruding from the distal end, and the shaving assembly includes an interface element having a receiving portion configured to receive the appendage.

5. The shaving system of claim 2 wherein the handle has a distal end and a proximal end, and the handle includes a receiving portion at the distal end and the shaving assembly includes an appendage configured to be received in the receiving portion.

6. The shaving system of claim 4 wherein the magnetic portion comprises at least one magnet affixed to the end of the appendage, and the receiving portion includes a ferrous material.

7. The shaving system of claim 4 wherein the appendage is disposed so that a long axis of the appendage is at an angle of +30 degrees to −

30 degrees with respect to a crossbar center of the handle, and the handle further includes a generally planar rim surface surrounding the appendage that is configured to engage a corresponding rim surface on the interface element when the shaving assembly is mounted on the handle.

8. The shaving system of claim 7 wherein the rim surface on the handle is disposed at an angle of about 10 to 20 degrees with respect to a longitudinal axis of inertia of the handle.

9. The shaving system of claim 1 wherein the shaving assembly includes a blade unit that is mounted on the handle with a pivoting connection.

10. The shaving system of claim 1 wherein the pivoting connection between the handle and blade unit is configured to allow a user to rotate the handle between approximately 15 to 105 degrees from a reference skin plane during shaving.

11. The shaving system of claim 2 wherein the interface element includes tabs configured to be grasped by a user to facilitate removal of the shaving assembly from the handle.

12. A shaving system comprising:

a handle, and

a shaving assembly mounted on the handle, the shaving assembly comprising an interface element configured to provide a mechanical engagement between the shaving assembly and handle, wherein the interface element and a distal portion of the handle include male and female portions configured such that shaving forces act through the male portion to retain the shaving assembly on the handle when a shaving surface of the shaving assembly is in contact with a user'"'"'s skin.

13. The shaving system of claim 12 wherein the handle has a distal end and a proximal end, and includes an appendage protruding from the distal end, and the shaving assembly includes an interface element having a receiving portion configured to receive the appendage.

14. The shaving system of claim 12 wherein the handle has a distal end and a proximal end, and the handle includes a receiving portion at the distal end and the shaving assembly includes an appendage configured to be received in the receiving portion.

15. The shaving system of claim 13 wherein the appendage is disposed so that a long axis of the appendage is at an angle of +30 degrees to −

30 degrees with respect to a crossbar center of the handle, and the handle further includes a generally planar rim surface surrounding the appendage that is configured to engage a corresponding rim surface on the interface element when the shaving assembly is mounted on the handle.

16. The shaving system of claim 15 wherein the rim surface on the handle is disposed at an angle of about 10 to 20 degrees with respect to a longitudinal axis of inertia of the handle.

17. The shaving system of claim 12 wherein the shaving assembly include a blade unit that is mounted on the handle with a pivoting connection.

18. The shaving system of claim 12 wherein the pivoting connection between the handle and blade unit is configured to allow a user to rotate the handle between approximately 15 to 105 degrees from a reference skin plane during shaving.

19. The shaving system of claim 12 wherein the interface element includes tabs configured to be grasped by a user to facilitate removal of the shaving assembly from the handle.