Single-blade razor apparatus

1. A razor apparatus, comprising:

a handle; and

a head mounted on the handle, wherein the head includes an upper portion and a lower portion that, when coupled together, are configured to have a single blade positioned between the upper portion and the lower portion, wherein with a cutting edge of the single blade is exposed through a front side of the head when the single blade is inserted from at least a portion of a rear side of the head and positioned inside the head between the upper portion and the lower portion, the cutting edge being exposed beyond a longitudinal side of the upper portion at the front side of the head, and wherein, when the upper portion and the lower portion are coupled together, at least part of a rear region of the upper portion is in contact with part of a rear region of the lower portion;

wherein the head includes a plurality of retaining posts on the lower portion of the head, at least two of the retaining posts contacting one or more points of contact on opposing sides of the single blade when the single blade is positioned inside the head, wherein the single blade is retained inside the head, at least in part, by the points of contact on the single blade being in contact with the at least two retaining posts, and wherein the at least two 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 at least two retaining posts mate with respective recesses in the portions of the single blade when the single blade is positioned inside the head.

3. The razor apparatus of claim 2 , wherein the at least two retaining posts have a smaller outside diameter than an inside diameter of the respective recesses.

4. The razor apparatus of claim 1 , wherein the cutting edge of the single blade is exposed through the front side of the head between the upper portion and the lower portion.

5. The razor apparatus of claim 1 , wherein the upper portion includes a pair of side walls that form an exterior of the head when the upper portion is coupled to the lower portion.

6. The razor apparatus of claim 1 , wherein the single blade is positioned between the at least two retaining posts when the single blade is positioned inside the head.

7. The razor apparatus of claim 1 , wherein the lower portion of the head includes one or more support elements that support the single blade when the single blade is positioned inside the head.

8. The razor apparatus of claim 1 , wherein the upper portion of the head includes one or more support elements that support the single blade when the single blade is positioned inside the head.

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

10. The razor apparatus of claim 1 , wherein the lower portion is closer to the handle than the upper portion.

11. The razor apparatus of claim 1 , wherein the at least two retaining posts are positioned on opposing sides of the lower portion.

12. The razor apparatus of claim 1 , wherein the head is pivotably mounted on the handle such that both the upper portion and the lower portion pivot with respect to the handle.

13. 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 includes:

an upper portion;

a lower portion;

wherein, when the upper portion and the lower portion are coupled together, the head is configured to have the single blade positioned between the upper portion and the lower portion, wherein a cutting edge of the single blade is exposed through a front side of the head when the single blade is inserted from at least a portion of a rear side of the head and positioned inside the head between the upper portion and the lower portion, the cutting edge being exposed beyond a longitudinal side of the upper portion at the front side of the head, and wherein, when the upper portion and the lower portion are coupled together, at least part of a rear region of the upper portion is in contact with part of a rear region of the lower portion at the rear side of the head; and

at least two retaining posts on the lower portion of the head, wherein the single blade is positioned between the at least two retaining posts such that the single blade is retained in the head, at least in part, by the at least two retaining posts being in contact with portions of the single blade on opposing sides of the single blade when the single blade is positioned inside the head, wherein the portions of the single blade being in contact with the at least two retaining posts allows 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.

14. The razor apparatus of claim 13 , wherein the at least two retaining posts mate with respective recesses in the portions of the single blade when the single blade is positioned inside the head.

15. The razor apparatus of claim 13 , wherein the cutting edge of the single blade is exposed through the front side of the head between the upper portion and the lower portion.

16. The razor apparatus of claim 13 , wherein the upper portion includes a pair of side walls that form an exterior of the head when the upper portion is coupled to the lower portion.

17. The razor apparatus of claim 13 , wherein the single blade is positioned between the at least two retaining posts when the single blade is positioned inside the head.

18. The razor apparatus of claim 13 , wherein the head is pivotably mounted on the handle such that both the upper portion and the lower portion pivot with respect to the handle.

19. A razor system, comprising:

a handle;

a head mounted on the handle; and

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

wherein the head includes an upper portion and a lower portion that, when coupled together, are configured to have the single blade positioned between the upper portion and the lower portion, wherein the cutting edge of the single blade is exposed through a front side of the head when the single blade is inserted from at least a portion of a rear side of the head and positioned inside the head between the upper portion and the lower portion, the cutting edge being exposed beyond a longitudinal side of the upper portion at the front side of the head, and wherein, when the upper portion and the lower portion are coupled together, at least part of a rear region of the upper portion is attached to and in contact with part of a rear region of the lower portion;

wherein the head includes a plurality of retaining posts on the lower portion of the head, at least two of the retaining posts being configured to engage with the recesses on the opposing sides of the single blade when the single blade is positioned inside the head to retain the single blade inside the head, and wherein the at least two 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.

20. The razor system of claim 19 , wherein the at least two retaining posts contact the recesses on opposing sides of the single blade when the single blade is positioned inside the head.