Razor head, razor, and razor blade
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- MICKO CHRISTOPH
- Filing Date
- 2024-07-16
- Publication Date
- 2026-05-27
AI Technical Summary
Existing razors and razor blades are not optimally designed to adapt to the contours of the skin, particularly in the buttocks area, making it difficult to achieve thorough and easy shaving.
A razor head with two legs arranged at an acute angle, each with a skin contact side and a razor blade section, allowing for better adaptation to body contours, and a razor blade with elongated end portions in different planes connected by a curved transition section for improved shaving efficiency.
Enables effective shaving of hard-to-reach areas by allowing the razor head to be easily maneuvered and the blade to remain close to the skin, enhancing shaving precision and safety.
Smart Images

Figure DE2024000058_23012025_PF_FP_ABST
Abstract
Description
[0001] DESCRIPTION
[0002] Razor head, razor and razor blade
[0003] Technical area
[0004] The invention relates to a razor head for a razor. The invention further relates to a razor and a razor blade.
[0005] Technical background
[0006] Razors containing curved blades are known in the art. For example, RU 133770 Ul shows a razor containing blades in a curved holder.
[0007] EP 3187315 A1 relates to a razor blade and razor cartridge featuring improved strength and thinness through the design of the geometric structure. The razor blade consists of a base section, a curved section, and a cutting section. The curved section is a key element that extends in an arc from the base section. The razor cartridge contains a housing with multiple razor blades. This innovation enables thinner and more stable razor blades and improves production output through one-piece razor blades.
[0008] The CH 129354 A2 safety razor is characterized by the blade being clamped near the cutting edges between the flat surfaces of a cover plate and a guard plate. The plates are shaped so that the blade can bend freely in the middle section.
[0009] However, these publications do not disclose special razor heads and razor blades that allow optimal adaptation to the contours of the skin and body, especially in the buttocks area.
[0010] The object of the invention is therefore to develop an improved shaving technique with which the buttocks area can be easily reached and thoroughly shaved.
[0011] Summary of the invention
[0012] The problem is solved by the features of the independent claims. Advantageous further developments are specified in the dependent claims and the description.
[0013] One aspect of the present disclosure relates to a razor head for a razor. The razor head comprises a first leg with a first longitudinal axis and a
[0014] Confirmation copy second leg with a second longitudinal axis. The first longitudinal axis and the second longitudinal axis are arranged at an acute angle to one another. The first leg has a first skin contact side extending parallel to the first longitudinal axis for establishing contact with the skin during shaving, and the second leg has a second skin contact side extending parallel to the second longitudinal axis for establishing contact with the skin during shaving. The first skin contact side and the second skin contact side face different directions. The razor head further has a first razor blade portion with a first cutting edge arranged on the first skin contact side, preferably parallel to the first longitudinal axis, and a second razor blade portion with a second cutting edge arranged on the second skin contact side, preferably parallel to the second longitudinal axis.This arrangement allows for better adaptation to the contours of the body and skin during shaving. Furthermore, the razor blade sits particularly close to the skin, allowing it to cut hairs directly at the surface.
[0015] In one embodiment, the first skin contact side and the second skin contact side are arranged in a gable roof shape relative to one another. Alternatively or additionally, the first skin contact side and the second skin contact side are arranged so as to slope upwards relative to one another. Alternatively or additionally, the first skin contact side lies in a first plane, the second skin contact side lies in a second plane, and the first plane and the second plane are arranged at an acute angle to one another.
[0016] In a further embodiment, the first skin contact side faces in a first direction, and the second skin contact side faces in a second direction. The first direction and the second direction extend at an obtuse angle to each other.
[0017] In a further embodiment, the first direction extends substantially at right angles to the longitudinal axis of the first leg, preferably substantially at right angles from the first skin contact side, particularly preferably substantially at right angles from the first skin contact side in the direction of the skin to be shaved, and the second direction extends substantially at right angles to the longitudinal axis of the second leg, preferably substantially at right angles from the second skin contact side, particularly preferably substantially at right angles from the second skin contact side in the direction of the skin to be shaved.
[0018] In a further embodiment, the first skin contact side and the second skin contact side face away from each other. In a further embodiment, the first skin contact side has a first sliding surface, which preferably extends parallel to the first cutting edge, and the second skin contact side has a second sliding surface, which preferably extends parallel to the second cutting edge. The sliding surface ensures that the cutting surface can be moved over the skin as optimally as possible. In addition, the sliding surface is intended to provide protection that prevents injuries to the skin if the cutting surface does not fit optimally against the skin.
[0019] The first leg and / or the second leg can comprise a plastic or be made of plastic. This allows for flexible shaping.
[0020] In one embodiment, the first leg has a first connection side for connecting to a handle of the razor, and the second leg has a second connection side for connecting to the handle. The first connection side is opposite the first skin contact side, and the second connection side is opposite the second skin contact side. This design allows for easy assembly and disassembly of the components and improved ergonomics during shaving.
[0021] In a further embodiment, the first leg and the second leg essentially have an inverted V-shape. This allows for optimal adaptation to specific body contours, particularly in the buttocks area.
[0022] In a further embodiment, the first razor blade portion and the second razor blade portion are formed by a common razor blade, preferably as disclosed herein, or by separate razor blades.
[0023] In a further embodiment, the razor head, preferably the first leg and the second leg, is detachably connectable to a handle of the razor, preferably by means of a joint. This allows, for example, worn razor blades to be replaced with the razor head without having to dispose of the handle. The joint gives the razor head additional degrees of freedom. This allows for better adaptation of the razor head to the contours of the body parts to be shaved and ensures that the razor blade rests more effectively on the skin.
[0024] In a further embodiment, the first leg and the second leg are directly connected to one another and / or together form a base body. Alternatively, the first leg and the second leg are arranged spaced apart from one another or offset from one another. A further aspect of the present disclosure relates to a razor comprising a handle and a razor head as disclosed herein, which is preferably detachably or permanently connected to the handle, preferably at a front end of the handle.
[0025] In one embodiment, the handle and the razor head are connected to each other in an articulated or jointless manner.
[0026] In a further embodiment, an intersection point of the first longitudinal axis and the second longitudinal axis lies on a longitudinal axis of the front end of the handle. Alternatively or additionally, the front end of the handle is arranged, preferably centrally, between the first leg and the second leg. Alternatively or additionally, the base body is arranged on an end face of the handle. Alternatively or additionally, the handle is offset at the front end. This arrangement ensures optimal alignment of the legs in relation to the handle and improves the handling of the razor, particularly when shaving the buttocks area.
[0027] Another aspect of the present disclosure relates to a razor blade for a razor head, preferably as disclosed herein. The razor blade has a first elongated, preferably straight, end portion lying in a first blade plane, and a second elongated, preferably straight, end portion lying in a second blade plane different from the first blade plane. The razor blade has a (once) bent transition portion connecting the first elongated end portion and the second elongated end portion. The razor blade has a (e.g., ground and / or sharpened) cutting edge for shaving that extends along the first elongated end portion and along the second elongated end portion, and optionally along the bent transition portion.
[0028] In one embodiment, the first elongated end section and the second elongated end section are arranged in a gable roof shape relative to one another. Alternatively or additionally, the first elongated end section and the second elongated end section are arranged so as to slope upwards relative to one another. Alternatively or additionally, the first blade plane and the second blade plane are arranged at an acute angle to one another.
[0029] In a further embodiment, the razor blade further comprises a receiving edge for receiving the razor blade in the razor head. The receiving edge is arranged opposite the cutting edge and extends along the first elongated end portion, along the curved transition portion, and along the second elongated end portion.
[0030] In a further embodiment, the curved transition section is essentially round-arch roof-shaped, gable roof-shaped, V-shaped or U-shaped.
[0031] In a further embodiment, the first elongated end portion and the second elongated end portion each have a longitudinal axis that meet at an acute angle.
[0032] The previously described preferred embodiments and features of the invention can be combined with one another as desired.
[0033] Short description of the characters
[0034] Further details and advantages of the invention are described below with reference to the accompanying drawings. They show:
[0035] Fig. 1a shows the front of a razor according to an embodiment of the present disclosure;
[0036] Fig. lb the back of the exemplary razor;
[0037] Fig. 2 shows a razor blade according to an embodiment of the present disclosure; and
[0038] Fig. 3 is a sectional view through one of the legs of a razor head according to an embodiment of the present disclosure
[0039] Fig. 4 is a schematic representation of a razor with spaced-apart first and second legs
[0040] Fig. 5 is a schematic representation of a razor with offset first and second legs
[0041] The embodiments shown in the figures are at least partially identical, so that similar or identical parts are provided with the same reference numerals, and for their explanation, reference is also made to the description of the other embodiments or figures to avoid repetition. Detailed description of exemplary embodiments
[0042] Figures 1a to 5 show a razor 100, preferably a wet razor, or individual components thereof.
[0043] The razor 100 comprises a handle 1 and a razor head 10 arranged thereon. The handle 1 has an ergonomic shape that allows the user to comfortably hold the handle 1 in his hand.
[0044] The razor head 10 comprises a first leg 20 and a second leg 30, which may be made of plastic, for example. The legs 20 and 30 may also be made of another material, such as metal or partially of metal.
[0045] The first leg 20 and / or the second leg 30 are designed such that they can each accommodate a razor blade 40. The first leg 20 and / or the second leg 30 and the respective razor blade 40 have a complementary shape. The first leg 20 and the second leg 30 are designed such that their longitudinal axes 21, 31 intersect at an acute angle.
[0046] The first leg 20 and the second leg 30 together have essentially an inverted V-shape.
[0047] The intersection point 50 of the longitudinal axes 21, 31 of the legs 20, 30 can lie on a longitudinal axis 25 of the handle 1. Specifically, the handle 1 can have a front, preferably offset, end 2 with the longitudinal axis 25. This arrangement ensures optimal alignment of the legs 20, 30 with respect to the handle 1 and improves the handling of the razor 100.
[0048] The razor head 10 is detachably connected to the handle 1, although the connection mechanism is not shown in the drawings. This is made possible by a common mechanism for receiving razor heads, such as click or snap fasteners. Thus, for example, worn razor blades or used lubricating strips attached to the razor head 10 can be replaced with the razor head 10 without having to dispose of the ergonomic handle 1. The mechanism then allows a replacement razor head to be connected to the ergonomic handle 1.
[0049] In a preferred variant, the razor head 10 can be connected to the handle 1 by means of a joint, which is not shown in the figures. The joint can either be permanently attached to the handle 1 and accommodate the razor head 10, or it can be permanently attached to the razor head 10 to accommodate the handle 1. This allows the razor head 10 to have additional degrees of freedom and better adapt to the contours of the body parts to be shaved, and allows the razor blade 40 to rest better on the skin, or closer to the hairline.
[0050] In one conceivable embodiment, it is possible for the first leg 20 and / or the second leg 30 to be permanently and / or integrally formed with the handle 1, whereby the first leg 20 and the second leg 30 would be directly connected to one another and / or together form a base body 5. Alternatively, the first leg 20 and the second leg 30 can be arranged spaced apart from one another or offset from one another, whereby the razor head 10 can thus be formed in several parts.
[0051] Preferably, the front end 2 of the handle 1 can be arranged centrally between the first leg 20 and the second leg 30. In an alternative embodiment, the base body 5 can be arranged on an end face of the handle 1, in particular the front end 2.
[0052] The razor blade 40 is shown schematically in greater detail in Figure 2. The razor blade 40 has a ground and / or sharpened cutting edge 41 for shaving hair and an unsharpened or non-ground receiving edge 42 opposite or opposite the ground and / or sharpened cutting edge 41 for receiving in the razor head 10 described above. The receiving edge 42 extends along the first elongated end portion 47, along the curved transition portion 46, and along the second elongated end portion 48.
[0053] The razor blade 40 has a curved transition section 46 along its entire longitudinal path 45. In the case of the razor blade illustrated here, the entire longitudinal path 45 runs through the center of the blade and follows the curved transition section 46.
[0054] In a preferred embodiment, the razor blade 40 comprises the curved transition section 46, which is framed along the entire longitudinal extent 45 by preferably straight, elongated end sections 47, 48. This means that one of the two end sections 47, 48 adjoins both sides of the curved transition section 46. This forms legs that extend away from the curved transition section 46. The curved transition section 46 connects the first elongated end section 47 and the second elongated end section 48 to one another. The curved transition section 46 is essentially round-arch roof-shaped, gable roof-shaped, V-shaped, or U-shaped.
[0055] The first end section 47 accordingly has a first cutting edge 41.1, and the second end section 48 accordingly has a second cutting edge 41.2, which together form the cutting edge 41.
[0056] In a particularly preferred embodiment, and as shown in Figure 2, the razor blade 40 forms a V- or U-shape. The straight end sections 47, 48, which frame the curved transition section 46, create this shape.
[0057] Furthermore, the straight end sections 47, 48 of the razor blade 40 each have their own longitudinal axis. The longitudinal axes meet at an acute angle. An acute angle is defined as an angle < 90°. The intersection point 50 of the two longitudinal axes preferably lies on a longitudinal axis 25 of the handle 1, preferably the front end 2 of the handle 1.
[0058] The first elongated end portion 47 lies in a first blade plane, and the second elongated end portion 48 lies in a second blade plane that differs from the first blade plane. The first blade plane and the second blade plane are arranged at an acute angle to each other.
[0059] The first elongated end section 47 and the second elongated end section 48 are arranged in a gable roof shape. The first elongated end section 47 and the second elongated end section 48 are arranged so as to slope upwards relative to one another.
[0060] Figure 3 shows a section through the first leg 20. The first leg 20 has a first skin contact side 60.1 for establishing contact with the skin during shaving. A thorough shave only takes place when the first skin contact side 60.1 is in proper contact with the skin. Furthermore, the first leg 20 has a first upper side or connecting side 61.1. This serves for connection to a handle 1 or a joint with the handle 1, as previously described. The first connecting side 61.1 is opposite the first skin contact side 60.1.
[0061] Furthermore, the first skin contact side 60.1 can have a first sliding surface 62.1 and a cutting surface 63.1. The first sliding surface 62.1 can have a surface whose properties are optimized for gliding on the skin. This means that the surface has optimal gliding properties, particularly when in contact with wet skin or when using aids such as shaving foam. In addition, the first sliding surface 62.1 can comprise further elements to optimize shaving. Examples of these are shapes or materials to protect the skin or to absorb impurities. In principle, the first sliding surface 62.1 ensures that the cutting surface 63.1 can be moved as optimally as possible over the skin. The cutting surface
[0062] 63.1 is the area of the first skin contact side 60.1, in which the razor blade 40 is contained so that it rests against the skin. The first sliding surface 62.1 and the cutting surface 63.1 thus form a cooperating unit, ensuring greater safety and thoroughness during shaving.
[0063] Figure 3 also shows that the cutting surface 63.1 on the first skin contact side 60.1 of the first leg 20 of the razor head 10 is formed by the razor blade 40. More precisely, the cutting surface 63.1 is formed by the ground and / or sharpened cutting edge 41 of the razor blade 40. This extends within the razor head 10 in the direction of the skin to be shaved without extending beyond the first sliding surface 62.1. As a result, the razor blade 40 lies particularly close to the skin and can sever hair directly at the surface of the skin. In detail, a first razor blade section 47 (see Figure 2) with a first cutting edge 41.1 (also see Figure 2) can be arranged on the first skin contact side 60.1, preferably parallel to the first longitudinal axis 21 (see Figure 1). The first sliding surface 62.1 can preferably extend parallel to the first cutting edge 41.1.
[0064] Referring again to Figures 1a and 1b, it should be noted that the second leg 30 can be designed like the first leg 20. Accordingly, the second leg 30 can also have a second skin contact side 60.2 with a second sliding surface and a second cutting surface. The second razor blade section 48 (see Figure 2) with the second cutting edge 41.2 (also see Figure 2) is arranged on the second skin contact side 60.2, preferably parallel to the second longitudinal axis 31 (see Figure 1a). The second sliding surface can preferably extend parallel to the second cutting edge 41.2. The second leg 30 can also have a second connecting side 61.2 for connecting to the handle 1. The second connecting side
[0065] 61.2 is opposite to the second skin contact side 60.2.
[0066] Accordingly, the first leg 20 has a first skin contact side 60.1 extending parallel to the first longitudinal axis 21 for establishing contact with the skin during shaving. The second leg 30 has a second skin contact side 60.2 extending parallel to the second longitudinal axis 31 for establishing contact with the skin during shaving. The first skin contact side 60.1 and the second skin contact side 60.2 face in different directions RI, R2. The first skin contact side 60.1 faces in a first direction RI, and the second skin contact side 60.2 faces in a second direction R2. The first direction RI and the second direction R2 run at an obtuse angle to one another. The first skin contact side 60.1 and the second skin contact side 60.2 thus face away from one another.
[0067] The first skin contact side 60.1 and the second skin contact side 60.2 are arranged in a gable roof shape. The first skin contact side 60.1 and the second skin contact side 60.2 are arranged so as to slope upwards relative to each other. The first skin contact side 60.1 lies in a first plane, the second skin contact side 60.2 lies in a second plane, and the first plane and the second plane are arranged at an acute angle to each other.
[0068] Preferably, as shown in the figures, the two razor blade sections 47, 48 are formed by the (common) razor blade 40. However, it is also possible for the two razor blade sections 47, 48 to be formed by separate razor blades.
[0069] Figure 4 schematically shows a razor 100 in which the first leg 20 and the second leg 30 are arranged at a distance from each other. In this example, the razor head 10 can be constructed in several parts.
[0070] Fig. 5 schematically shows a razor 100 in which the first leg 20 and the second leg 30 are arranged offset from one another. In this embodiment, the front region of the first leg 20 or the second leg 30 can be supported on a second upper side 61.2 or a first upper side 61.1 of the second leg 30 or the first leg 20. It is possible to construct the legs 20 and 30 as one piece, connectable to one another, or in multiple parts.
[0071] The invention is not limited to the preferred embodiments described above. Rather, a multitude of variants and modifications are possible, which also utilize the inventive concept and therefore fall within the scope of protection. In particular, the invention also claims protection for the subject matter and features of the subclaims, independently of the claims referred to. In particular, the individual features of independent claim 1 are each disclosed independently of one another. In addition, the features of the subclaims are also disclosed independently of all features of independent claim 1. List of reference symbols
[0072] 1 handle
[0073] 2 front end
[0074] 5 base bodies
[0075] 10 razor heads
[0076] 20 first leg
[0077] 21 first longitudinal axis
[0078] 25 Longitudinal axis
[0079] 30 second leg
[0080] 31 second longitudinal axis
[0081] 40 razor blades
[0082] 41 Cutting edge
[0083] 41.1 first cutting edge
[0084] 41.2 second cutting edge
[0085] 42 Mounting edge
[0086] 45 Total longitudinal course
[0087] 46 curved transition section
[0088] 47 first razor blade section or end section
[0089] 48 second razor blade section or end section
[0090] 50 intersection point
[0091] 60.1 first skin contact side / underside
[0092] 60.2 second skin contact side / underside
[0093] 61.1 first connection side / top side
[0094] 61.2 second connection side / top side
[0095] 62.1 first sliding surface
[0096] 63.1 first cutting surface
[0097] 100 (e.g. wet) razor
[0098] RI first direction
[0099] R2 second direction
Claims
CLAIMS 1. A razor head (10) for a razor (100), the razor head (10) comprising: a first leg (20) with a first longitudinal axis (21) and a second leg (30) with a second longitudinal axis (31), wherein: the first longitudinal axis (21) and the second longitudinal axis (31) are arranged at an acute angle to one another; the first leg (20) has a first skin contact side (60.1) extending parallel to the first longitudinal axis (21) for establishing contact with the skin during shaving, and the second leg (30) has a second skin contact side (60.2) extending parallel to the second longitudinal axis (31) for establishing contact with the skin during shaving; the first skin contact side (60.1) and the second skin contact side (60.2) face different directions (RI, R2); a first razor blade portion (47) having a first cutting edge (41.1) disposed on the first skin contact side (60.1), preferably parallel to the first longitudinal axis (21); and a second razor blade portion (48) with a second cutting edge (41.2) arranged on the second skin contact side (60.2), preferably parallel to the second longitudinal axis (31).
2. The razor head (10) according to claim 1, wherein at least one of the following is fulfilled: the first skin contact side (60.1) and the second skin contact side (60.2) are arranged in a gable roof shape relative to one another; the first skin contact side (60.1) and the second skin contact side (60.2) are arranged so as to rise relative to one another; and the first skin contact side (60.1) lies in a first plane, the second skin contact side (60.2) lies in a second plane, and the first plane and the second plane are arranged at an acute angle to one another.
3. A razor head (10) according to claim 1 or claim 2, wherein: the first skin contact side (60.1) faces in a first direction (RI) and the second skin contact side (60.2) faces in a second direction (R2), and the first direction (RI) and the second direction (R2) are at an obtuse angle to each other.
4. A razor head (10) according to any one of the preceding claims, wherein: the first skin contact side (60.1) and the second skin contact side (60.2) face away from each other.
5. A razor head (10) according to any one of the preceding claims, wherein: the first skin contact side (60.1) has a first sliding surface (62.1) which preferably extends parallel to the first cutting edge (41.1); and the second skin contact side (60.2) has a second sliding surface which preferably extends parallel to the second cutting edge (41.2).
6. A razor head (10) according to any one of the preceding claims, wherein: the first leg (20) and / or the second leg (30) comprises a plastic or is formed from a plastic.
7. A razor head (10) according to any one of the preceding claims, wherein: the first leg (20) has a first connection side (61.1) for connecting to a handle (1) of the razor (100) and the second leg (30) has a second connection side (61.2) for connecting to the handle (1); the first connection side (61.1) is opposite to the first skin contact side (60.1); and the second connection side (61.2) is opposite to the second skin contact side (60.2).
8. A razor head (10) according to any one of the preceding claims, wherein: the first leg (20) and the second leg (30) together form a substantially inverted V-shape.
9. A razor head (10) according to any one of the preceding claims, wherein: the first razor blade portion (47) and the second razor blade portion (48) are formed by a common razor blade (40), preferably according to any one of claims 16 to 20, or by separate razor blades.
10. A razor head (10) according to any one of the preceding claims, wherein: the razor head (10), preferably the first leg (20) and the second leg (30) thereof, is detachably connectable to a handle (1) of the razor (100), preferably by means of a joint.
11. A razor head (10) according to any one of the preceding claims, wherein: the first leg (20) and the second leg (30) are directly connected to one another and / or together form a base body (5); or the first leg (20) and the second leg (30) are arranged spaced apart from one another or offset from one another.
12. A razor (100), preferably a wet razor, the razor (100) comprising: a handle (1); and a razor head (10) according to any one of the preceding claims, which is preferably detachably or permanently connected to the handle (1), preferably at a front end (2) of the handle (1).
13. A razor (100) according to claim 12, wherein: the handle (1) and the razor head (10) are connected to each other in an articulated or non-articulated manner.
14. A razor (100) according to claim 12 or claim 13, wherein: an intersection point (50) of the first longitudinal axis (21) and the second longitudinal axis (31) lies on a longitudinal axis (25) of the front end (2) of the handle (1).
15. A razor (100) according to any one of claims 12 to 14, wherein: the front end (2) of the handle (1) is arranged, preferably centrally, between the first leg (20) and the second leg (30); and / or the base body (5) is arranged on an end face of the handle (1).
16. A razor (100) according to any one of claims 12 to 15, wherein: the handle (1) is cranked at the front end (2).
17. Razor blade (40) for a razor head (10), preferably according to one of claims 1 to 11, wherein the razor blade (40) comprises: a first elongated, preferably straight, end portion (47) lying in a first blade plane; a second elongated, preferably straight, end portion (48) lying in a second blade plane different from the first blade plane; a curved transition portion (46) connecting the first elongated end portion (47) and the second elongated end portion (48); and a cutting edge (41, 41.1, 41.2) for shaving, extending along the first elongated end portion (47) and along the second elongated end portion (48) and optionally along the curved transition portion (46).
18. The razor blade (40) of claim 17, wherein at least one of: the first elongated end portion (47) and the second elongated end portion (48) are arranged in a gable roof shape relative to one another; the first elongated end portion (47) and the second elongated end portion (48) are arranged so as to rise relative to one another; and the first blade plane and the second blade plane are arranged at an acute angle to one another.
19. Razor blade (40) according to one of claims 17 to 18, further comprising: a receiving edge (42) for receiving the razor blade (40) in the razor head (10), the receiving edge (42) being arranged opposite the cutting edge (41) and extending along the first elongated end portion (47), along the curved transition portion (46) and along the second elongated end portion (48).
20. Razor blade (40) according to one of claims 17 to 19, wherein: the curved transition section (46) is substantially round-arch roof-shaped, gable roof-shaped, V-shaped or U-shaped.
21. A razor blade (40) according to any one of claims 17 to 20, wherein: the first elongated end portion (47) and the second elongated end portion (48) each have a longitudinal axis which meet at an acute angle.