Rotary razor

Patent metadata

Field	Value
Publication number	US-10889016-B2
Application number	US-201916269302-A
Country	US
Kind code	B2
Filing date	Feb 6, 2019
Priority date	Feb 8, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A wet shaving device comprising a motor; an actuator configured to vary the speed of the motor; a rotary blade module having at least one cutting element; and a drive train assembly including at least one shaft operatively coupling the motor and the rotary blade module, wherein the at least one shaft may be configured to transfer the rotational movement of the motor to the rotary blade module.

First claim

The invention claimed is:

1. A wet shaving device comprising:
a handle extending generally along a first axis;
a motor configured to be rotated about the first axis, the motor being disposed in the handle;
an actuator configured to vary a speed of the motor;
a rotary blade module having at least one cutting element, the rotary blade module configured to rotate about a third axis that is substantially perpendicular to the first axis;
a razor housing extending away from the handle and generally along the third axis, wherein the rotary blade module is disposed within the razor housing; and
a drive train assembly including at least one shaft operatively coupling the motor and the rotary blade module, wherein the at least one shaft is configured to transfer a rotational movement of the motor to the rotary blade module, wherein the at least one shaft of the drive train assembly includes a first shaft, a second shaft connected to the first shaft, and a third shaft connected to the second shaft,
the first shaft includes a first end and a second end, the first end is connected to the motor and the second end includes a bevel gear to facilitate connection to a first end of the second shaft and rotation of the first shaft with respect to the second shaft,
the second shaft being connected to a first end of the third shaft and the third shaft including a second end that is sealingly connected to the rotary blade module.

2. The wet shaving device according to claim 1 , wherein, when the actuator is in a first position, the rotary blade module rotates at a first speed, and when the actuator is in a second position, the rotary blade module rotates at a second speed that is different from the first speed.

3. The wet shaving device according to claim 1 , wherein the motor is configured to facilitate rotation of the first shaft about the first axis, rotation of the second shaft about a second axis, and rotation of the third shaft about the third axis, wherein the first axis, the second axis, and the third axis are not co-linear, and wherein the second axis and the third axis are substantially perpendicular to one another.

4. The wet shaving device according to claim 1 , wherein the handle extends from a first end to a second end, wherein the razor housing extends from the second end of the handle, in a direction away from the first end of the handle.

5. The wet shaving device according claim 1 , wherein the second end of the third shaft is sealingly connected to the rotary blade module by a bayonet mounting, wherein the wet shaving device further includes a spring that is at least partially disposed within the third shaft, wherein the spring is configured to apply a pressure between the third shaft and the rotary blade module to secure the third shaft to the rotary blade module.

6. The wet shaving device according to claim 1 , wherein the razor housing is connected to the handle.

7. The wet shaving device according to claim 1 , wherein the drive train assembly is disposed inside of the handle, and the at least one cutting element includes at least two cutting elements.

8. The wet shaving device according to claim 7 , wherein the rotary blade module is configured to rotate independently of the razor housing.

9. The wet shaving device according to claim 7 , further including a foil member connected to the razor housing and a heat transfer mechanism;
the foil member being positioned to partially cover the at least one cutting element, and the heat transfer mechanism being operable to transfer heat to and/or from the foil member to a surface of a user.

10. The wet shaving device according to claim 1 , wherein the at least one cutting element includes at least two cutting elements, and the wet shaving device includes a lubricant delivery device interposed between the at least two cutting elements.

11. The wet shaving device according to claim 10 , wherein the rotary blade module includes a hollow body and defines at least one hole interposed between the at least two cutting elements.

12. The wet shaving device according to claim 11 , wherein an interior of the hollow body of the rotary blade module is configured to receive a lubricant.

13. The wet shaving device according to claim 12 , wherein the lubricant delivery device is at least one elongated bar having at least one hole, wherein the elongated bar is interposed between the at least two cutting elements and over the at least one hole of the rotor blade module, such that the interior of the hollow body is in fluid communication with an exterior of the hollow body.

14. The wet shaving device according to claim 13 , further including a piston at least partially disposed in the hollow body of the rotary blade module, the piston being configured to pump the lubricant through the at least one hole of the at least one elongated bar.

15. The wet shaving device according to claim 10 , wherein the lubricant delivery device includes a strip having an anti-friction coating on at least a portion thereof.

Assignees

• Bic Violex Sa

Inventors

• Davos Vasileios
• Koulourias Georgios

Classifications

• B26B21/34

  of the type carrying rollers · CPC title

• B26B21/48

  Heating means · CPC title

• B26B19/16

  involving a knife cylinder or a knife cone or separate cutting elements moved like a rotating cylinder or a rotating cone · CPC title

• B26B19/40

  Lubricating · CPC title

• B26B21/565

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