Thermally assisted shaving system

• US 5,065,515 A
• Filed: 01/24/1991
• Issued: 11/19/1991
• Est. Priority Date: 01/24/1991
• Status: Expired due to Fees

• Current Assignee: Warner-Lambert Company (Pfizer Inc.)
• Original Assignee: Warner-Lambert Company (Pfizer Inc.)
• Inventors: Iderosa, Richard A.
• Primary Examiner(s): Watts, Douglas D.
• Application Number:
  US07/647,162
• Time in Patent Office: 299 Days
• Field of Search: 30/140, 30/123, 83/171, 83/16, 219/222, 219/229, 606/28, 606/9, 606/13, 132/200
• US Class Current: 30/140
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/00476 Hair follicles
• CPC Class Codes: A61B 2018/20359 by movable mirrors, e.g. galvanometric
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning
• CPC Class Codes: B26B 21/48 Heating means
• CPC Class Codes: Y10T 83/0414 At localized area [e.g., line of separation]

Abstract

A device for shaving hair has a housing which is formed with a handle and which supports a razor blade and a heating means. More specifically, the heating means, which may be either a linearly-scanned laser beam or a ceramic or metallic heating element, is mounted in the housing to pre-heat the hair to be cut. Accordingly, the heating means softens the hair that is near the cutting edge of the blade, so that a blade which is less sharp than conventional blades may be used to cut the hair without unduly irritating the skin. Appropriate power supplies for the heating means may be contained within the housing, if desired.

Claims

1. A device for shaving hair, which comprises:

a housing;

a blade mounted on said housing, said blade having a linear cutting edge projecting from said housing for cutting said hair; and

a heating means mounted on said housing, said heating means having an elongated edge projecting from said housing and disposed substantially parallel to said blade cutting edge for heating said hair prior to cutting of said hair by said cutting edge.

2. A device for shaving hair as recited in claim 1 wherein said heating means comprises a heating element having a thermal resistance and a source of electricity connected to said element to heat said element.

3. A device for shaving hair as recited in claim 2 wherein said source of electricity is mounted in said housing.

4. A device for shaving hair as recited in claim 2 wherein said heating element is formed with a bevelled heating edge, said edge being bevelled to increase heat dissipation from said edge.

5. A device for shaving hair as recited in claim 1 wherein said heating means comprises a laser for generating a laser beam.

6. A device for shaving hair as recited in claim 5 wherein said laser linearly scans said beam across said surface.

7. A device for cutting hair, which comprises:

means for cutting said hair, said cutting means having a linear cutting edge;

means for heating said hair substantially at said cutting edge, said heating means having an elongated edge disposed substantially parallel to said blade cutting edge; and

means for holding said cutting means and said heating means.

8. A device for cutting hair as recited in claim 7 wherein said cutting means is a razor blade.

9. A device for cutting hair as recited in claim 7 wherein said holding means comprises a housing for holding said cutting means and said heating means.

10. A device for cutting hair as recited in claim 7 wherein said heating means comprises a heating element having a thermal resistance and a source of electricity connected to said element to heat said element.

11. A device for cutting hair as recited in claim 10 wherein said source of electricity is mounted in said housing.

12. A device for cutting hair as recited in claim 10 wherein said heating element is formed with a bevelled heating edge, said edge being bevelled to increase heat dissipation from said edge.

13. A device for cutting hair as recited in claim 7 wherein said heating means comprises a laser for generating a laser beam.

14. A device for cutting hair as recited in claim 13 wherein said laser linearly scans said beam across said surface.

15. A method for cutting hair, comprising the steps of:

mounting a blade having a substantially straight cutting edge on a housing, said cutting edge extending outwardly from said housing;

providing heat along a defined line substantially parallel to said cutting edge for heating said hair substantially at said cutting edge prior to cutting said hair with said blade; and

cutting said hair.

16. A method for cutting hair as recited in claim 15 wherein said heating step is accomplished by directing a laser beam onto the surface to be shaved.

17. A method for cutting hair as recited in claim 15 wherein said heating step is accomplished by positioning a heating element adjacent said hair and heating said element.