MXPA06006622A - Improved process for the making of a wet shaving system with a guard bar - Google Patents
Improved process for the making of a wet shaving system with a guard barInfo
- Publication number
- MXPA06006622A MXPA06006622A MXPA/A/2006/006622A MXPA06006622A MXPA06006622A MX PA06006622 A MXPA06006622 A MX PA06006622A MX PA06006622 A MXPA06006622 A MX PA06006622A MX PA06006622 A MXPA06006622 A MX PA06006622A
- Authority
- MX
- Mexico
- Prior art keywords
- wood
- platform
- protection bar
- blade
- shaving system
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002023 wood Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 240000002871 Tectona grandis Species 0.000 claims description 4
- 241000218645 Cedrus Species 0.000 claims description 3
- 240000000731 Fagus sylvatica Species 0.000 claims description 3
- 235000010099 Fagus sylvatica Nutrition 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 241000158728 Meliaceae Species 0.000 claims 2
- 238000000465 moulding Methods 0.000 abstract description 4
- 210000003491 Skin Anatomy 0.000 description 7
- 230000001050 lubricating Effects 0.000 description 3
- 230000035807 sensation Effects 0.000 description 2
- 210000000078 Claw Anatomy 0.000 description 1
- 210000003414 Extremities Anatomy 0.000 description 1
- 240000007936 Swietenia macrophylla Species 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
Abstract
The invention relates to a process for the manufacture of a wet shaving system comprising at least one blade (4), a platform (1) and a guard bar (2) having two ends and positioned forward of the at least one blade and parallel to the blade cutting edge, said process comprising the steps of providing a guard bar (2) having two ends, positioning said guard bar in a mold cavity for said platform;molding at least part of the platform (3) by injecting plastic in the mold cavity;wherein said at least part of the platform (3) is molded over said ends of said guard bar. The guard bar may be made of metal or wood, and may exhibit a wide range of diameter and shape, may be smooth or rough, and may comprise protuberances.
Description
IMPROVED PROCESS FOR THE DEVELOPMENT OF A WET SURFACE SYSTEM WITH A PROTECTION BAR
Field of the Invention This invention relates to an improved process for developing a wet shaving system with a protection bar and the obtained wet shaving system.
BACKGROUND OF THE INVENTION As is known to those skilled in the art, a wet shaving system generally comprises at least one shaving blade placed on a platform normally made of rigid plastic, possibly a cover behind the blade and a protection bar in front of the blade and parallel to the cutting edge of the blade. Over time, various modalities have been developed, such as a system comprising several blades, for example, two or three blades; a system comprising a lubricating band on the cover; a system comprising a protection bar provided with longitudinal projections that engage the skin; a system comprising a protection bar that is made of material '¡? p. i; - • ':. "elastomeric", a system comprising a protection bar that includes a water leaching material.The platform itself can be made from a unitary body or it can be made from several parts.The protection bar is usually made of a material • Rigid plastic In some embodiments, it comprises a skin-contact portion of elastomeric material.The protection bar is designed to be the first point of contact with the skin when the shaving system is used, and its material, shape and position in relation to the blade or the first blade are important in the comfort of the resulting shaving, in particular, exerts a degree of drag or friction on the skin, depending on the material and shape of the contact portion with the skin of the bar of protection (rigid fins, elastomeric fins, protuberances and / or portions with recesses of various forms) This tightens the skin, helping to prevent skin tightening between the protection bar and the blade of the first blade. The . Shaving comfort also depends on the material used for the protection bar, due to contact with the skin. A metal protection bar may be acceptable to some users due to the cold sensation experienced during shaving. U.S. Patent No. 2,349,252 discloses a shaving system having a protection consisting of a corrugated length of wire having two parallel, extended ends that slide under elastic claws present on the platform. U.S. Patent No. 4,502,217 discloses a shaving instrument comprising a metal protection bar provided with teeth and placed by pressure adjustment on the platform or base portion. The metal protection bar comprises a longitudinal • bar and two short end ends that form an angle with the bar and thus are in the shape of a U, as can be seen in Figure 9 (reference number 6). It snaps into the base portion. However, such modality 5 has certain disadvantages: it is difficult to have constant geometry for each assembly, there are very few tolerances in order to have a secure snap fit, it is difficult to cut and shape the metal bar. Wiring in a U-shape with respect to such low tolerances and the diameter range of the protection bar is small (1.2 to 2.2.0 mm). The issue of low tolerances is stated in the patent, where it is said that in order that the platform projections are not deformed by excessive snap-fitting when the limbs are inserted into the platform, the ends of the protection bar they should fit smoothly without playing in the 5 recesses provided on the platform for reception. Therefore, such a process is not satisfactory. There remains the need for a process to develop a wet shaving system, in such a way that the geometry of the
• < (.! -, -. V '• k "-' • '" protection bar and the tolerance criteria are no longer a concern when joining the protection bar to the platform, - so that the manufacturing process be easier to implement.
BRIEF DESCRIPTION OF THE INVENTION An object of the invention is to provide a process for the manufacture of a wet shaving system comprising at least one blade, a platform and a protection bar having two ends and placed in front of the it, less a blade and parallel to the cutting edge of the blade, said process comprising the steps of: - providing a protection bar (2) that has
* two ends, placing said protection bar in a mold cavity for said platform, molding at least part of the platform by injection of plastic in the mold cavity, wherein said at least part of the platform is molded on said ends of said protection bar. The protection bar is thus fixedly attached to the platform. The protection bar can be made of any suitable material, in particular metal and wood. A further object of the invention is to provide a wet shaving system, obtained by the process of the invention. A further object of the invention is to provide a wet shaving system comprising at least one blade, a platform and a protection bar having two ends and placed in front of the at least one blade and parallel to the cutting edge of the blade. the blade, said platform having molded parts on said ends of said protection bar.
DETAILED DESCRIPTION OF THE INVENTION The foregoing objects and advantages and others of the invention will become apparent from the detailed description of the invention, considered in conjunction with the accompanying drawings. As mentioned, the protection bar of a shaving system of the invention is fixedly attached at its ends to the platform by molding part of the platform on said ends of said protection bar. More specifically, during the process of molding the plastic platform, and while the mold is still open, a protection bar having two ends is inserted inside one of the mold parts in the appropriate location, uncovering the two ends of the bar and exposing to plastic. Then, the mold is closed and the plastic is injected into it. The ends of the protection bar are then covered with the plastic forming the platform or part of the platform and are thus fixedly attached to the platform of the shaving system. When the platform is made of several parts, there may be several successive injections of plastic, possibly of different types, in order to complete the formation of the platform. In the process for developing the shaving system, there may then be steps of injecting materials in order to form the cover and possibly the lubricating band, if it is presented, as is known to the person skilled in the art. The protection can be of any material, shape and / or dimensions, as long as its two ends can be fastened to the platform, that is, as long as the distance between the two ends is not greater than the amplitude of the platform. The invention makes it possible to be free of the strict criteria of 5 tolerances linked to the process of snap-fitting of a protection bar, and allows the use of a protection bar in all kinds of materials, profiles and diameters, for n Shaving performance more comfortable and safer. In particular, it allows the selection of a material that has a cold, such sensation. : i 0 as metal y, which is generally acceptable by the user, such as metal and wood. It also allows the precise placement and: 'í ability to control the total geometry of the shaver. In addition, it allows the placement of a protection bar that exhibits a variety of shapes and diameters without affecting the methods and equipment of the assembly process. It is no longer necessary to have a U-shaped protection bar, nor is it necessary to comply with strict geometry / dimension requirements, to correspond to recesses in the platform,
A k * since tolerance is no longer a problem. According to the invention, the protection bar can thus have a circular or substantially circular cross section. It can exhibit a wide range of diameters, for example, from about 1 to about 4 mm. It may also exhibit other complex geometric shapes, such as an oval cross section or an irregular cross section. In a preferred embodiment, the protection bar has a circular or substantially circular cross section. Additionally, according to the invention, the protection bar can be soft, polished or rough. It may comprise protuberances, such as longitudinal fins, or grooves and lifts, or irregularly or regularly extended teeth, as described in U.S. Patent Nos. 4,502,217 and 4,998,347, incorporated herein by reference. Still according to the invention, the protection can be a longitudinal body; it can also be a longitudinal body provided with two ends that extend substantially perpendicular to the axis of the body. The protection bar can be made of metal, for example, stainless steel, steel, aluminum, copper, nickel, metal alloys, preferably stainless steel. The protection member can be made of wood, for example, any wood that is substantially resistant to rot and resistant to water or waterproof, either naturally or after treatment, in order to withstand the repeated water contacts involved. for use in shaving. Examples are teak wood, sial wood, hollak, beech wood, mahogany, cedar, preferably teak. The wood used for the protection bar can be cut or extruded in a specific way. In a preferred embodiment of the invention, the protection bar is made of metal and is in the form of a longitudinal body with a cross section, circular or substantially circular. Obviously, a shaving system according to the invention, or made according to the process of the invention, may comprise several blades, such as two, three or four blades, and may comprise other elements known to persons skilled in the art. , such as a cover and / or a lubricating band. It can be movably or fixedly attached to a handle, as is known to persons skilled in the art.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of one embodiment of a shaving system according to the invention (blade not shown). Figure 2 is a cross-sectional view of the shaving system of Figure 1. . Figure 3 is an enlarged portion of Figure 2. Figure 4 is a perspective view of one embodiment of a shaving system according to the invention. The shaving system according to Figures 4 comprises a platform 1, at least one blade 4 and a soft protection bar 2. One can see in Figure 3 the plastic platform parts 3 that cover the ends of the protection bar 2, thus attaching the protection bar to the platform in a fixed manner. The invention is applicable to various forms of shaving systems, and is not limited to the embodiments described herein and illustrated in the drawings.
Claims (1)
1.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MXPA06006622A true MXPA06006622A (en) | 2007-04-10 |
Family
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