Single-blade razor apparatus

1. A razor apparatus, comprising:

a handle; and

a head mounted on the handle, wherein the head has a rear side including an aperture configured for removably inserting a single blade inside the head, the head further having a front side through which a cutting edge of the single blade is exposed when the single blade is positioned inside the head;

wherein the head includes a plurality of retaining posts, the retaining posts mating with respective recesses of the single blade when the single blade is positioned inside the head to retain the single blade inside the head, and wherein the retaining posts allow only an entirety of the single blade to move, when the cutting edge is configured to contact a skin surface during shaving, in a direction perpendicular to the cutting edge of the single blade and in a direction laterally along the cutting edge when the single blade is positioned inside the head.

2. The razor apparatus of claim 1 , wherein the retaining posts permit the single blade to freely move in the direction perpendicular to the cutting edge of the single blade without biasing forces.

3. The razor apparatus of claim 1 , wherein the stationary retaining posts are positioned in the rear side of the head.

4. The razor apparatus of claim 1 , wherein the head comprises an upper portion and a lower portion that form the aperture, the lower portion being closer to the handle than the upper portion, and wherein the retaining posts are positioned in the lower portion.

5. The razor apparatus of claim 4 , wherein the retaining posts protrude at least partially into the aperture.

6. The razor apparatus of claim 1 , wherein the plurality of retaining posts includes two retaining posts positioned on opposing sides of the head.

7. The razor apparatus of claim 1 , wherein the head comprises an upper portion and a lower portion that form the aperture, wherein the lower portion is closer to the handle than the upper portion, and wherein proximate the front side of the head, the upper portion is physically supported by the lower portion.

8. The razor apparatus of claim 1 , wherein the head comprises an upper portion and a lower portion that form the aperture, wherein the lower portion is closer to the handle than the upper portion, and wherein the upper portion and the lower portion are secured by one or more fasteners.

9. A razor apparatus, comprising:

a handle;

a head mounted on the handle, the head being adapted to operate with a single blade, wherein the head has a rear side including an aperture adapted for removably inserting the single blade inside the head, the head further having a front side through which a cutting edge of the single blade is exposed when the single blade is positioned inside the head; and

a plurality of retaining posts positioned in the head, wherein the retaining posts are configured to mate with respective recesses of the single blade and retain the single blade inside the head when the single blade is positioned inside the head, and wherein the retaining posts allow only entirety of the single blade to move, when the cutting edge is configured to contact a skin surface during shaving, in a direction perpendicular to the cutting edge of the single blade and in a direction laterally along the cutting edge while retaining the single blade inside the head.

10. The razor apparatus of claim 9 , wherein the retaining posts permit the single blade to freely move in the direction perpendicular to the cutting edge of the single blade without biasing forces.

11. The razor apparatus of claim 9 , wherein the head comprises an upper portion and a lower portion that form the aperture, the lower portion being closer to the handle than the upper portion, and wherein the retaining posts are positioned in the lower portion.

12. The razor apparatus of claim 9 , wherein the plurality of retaining posts includes two retaining posts positioned on opposing sides of the head.

13. The razor apparatus of claim 12 , wherein the two retaining posts are positioned on opposing sides of the aperture.

14. A razor system, comprising:

a handle;

a head mounted on the handle; and

a single blade having a cutting edge and recesses on opposing sides of the single blade along the cutting edge;

wherein the head has a rear side including an aperture for removably inserting the single blade inside the head, the head further having a front side through which the cutting edge of the single blade is exposed when the single blade is positioned inside the head; and

wherein the head includes a plurality of retaining posts, the retaining posts mating with the recesses of the single blade when the single blade is positioned inside the head to retain the single blade inside the head, and wherein the retaining posts allow only an entirety of the single blade to move, when the cutting edge is configured to contact a skin surface during shaving, in a direction perpendicular to the cutting edge of the single blade and in a direction laterally along the cutting edge when the single blade is positioned inside the head.

15. The razor apparatus of claim 14 , wherein the retaining posts permit the single blade to freely move in the direction perpendicular to the cutting edge of the single blade without biasing forces.

16. The razor system of claim 14 , wherein the retaining posts are positioned in the rear side of the head.

17. The razor system of claim 14 , wherein the head comprises an upper portion and a lower portion that form the aperture, the lower portion being closer to the handle than the upper portion, and wherein the retaining posts are positioned in the lower portion.