The present invention relates to apparatus for sharpening a multi-bladed cartridge razor. More specifically, the invention relates to apparatus for use with to sharpen or hone a multi-bladed sharpening razor where multiple blades are retained in a single shaving cartridge. The multi-bladed shaving razor is used for shaving the face, legs, underarm, and other areas of a body where unwanted hair is present. A lubricant comprising of aloe vera gel is utilized to improve the honing process of the blades.
Most safety razors are typically used for shaving the face and other hairy regions of the human body. The razor, consist of a metal and/or plastic handle attached to a multi-bladed cartridge razor head. Generally a multi-bladed razor cartridge is capable of not more than 5 to 10 close shaves before the shaving edges becomes dull and the user must dispose of the cartridge. There is a need for quick and simple means for honing or re-sharpening the blades in order to extend their useful life.
U.S. Pat. No. 1,540,078 issued May 23, 1924 to W. R. Long discloses a sharpener for a single flat razor blade. With this invention the user places a single blade in the sharpener, and slides the blade over a sharpening surface that sharpens the blade. While this invention sharpens a single blade, it is not intended for sharpening multiple blades, a cartridge of blades and it abrades the blade surface in addition to just removing oxidation from the edge of the blade.
U.S. Pat. No. 1,588,322 issued Apr. 4, 1924 to T. McAdoo discloses a sharpener for a single flat razor blade. With this invention the user places a single blade in the sharpener, and slides the blade over a sharpening surface that sharpens the blade. While this invention sharpens a single blade, it is not intended for sharpening multiple blades, a cartridge of blades and it abrades the blade surface in addition to just removing oxidation from the edge of the blade.
U.S. Pat. No. 1,594,246 issued Aug. 28, 1925 to H. W. Dechert discloses a scraper sharpener. With this invention the user places a scraper blade in the sharpener, and slides the blade over the surface of a file to sharpen the edge of the scraper. While this invention sharpens scraper, it is not intended for sharpening multiple blades, a cartridge of blades and it abrades the blade surface in addition to just removing oxidation from the edge of the scraper.
U.S. Pat. No. 2,458,257 issued Jun. 25, 1946 to A. E. Donovan discloses a holder and sharpener for a single flat razor blade. With this invention the user places a single blade in the holder/sharpener, and slides the blade over a sharpening surface that sharpens the blade. While this invention sharpens a single blade, it is not intended for sharpening multiple blades, a cartridge of blades and it abrades the blade surface in addition to just removing oxidation from the edge of the blade.
U.S. Pat. No. 5,036,731 issued Aug. 6, 1991 to Fletcher discloses a Razor Sharpening Device that sharpens a single razor blade. With this invention the user places a single blade in the sharpener, and slides the blade over a honing member that sharpens the blade. While this invention sharpens a single blade, it is not intended for sharpening multiple blades, or a cartridge of blades.
Published US Patent application 2003/0170198 from Williams published Sep. 11, 2003 discloses a shaving gel using a number of ingredients including aloe vera gel for shaving. While this published application discloses the use of aloe vera gel as a lubricant for shaving there is no disclosure where the shaving gel is utilized to sharpen the shaving razor.
The prior art discloses examples of apparatus for sharpening blades of a razor, but none providing the combination of features disclosed and claimed herein.
One of the objects of this invention is to provide a new and improved sharpening device for sharpening the cutting edges of a multi-bladed cartridge razor. Other objects of this invention are to provide apparatus that can rapidly sharpen razor blades mounted in a cartridge, which have no moving parts, is compact and durable.
Razor blades in general become dull when oxidation occurs to the cutting edge. When the oxidation is removed, the cutting edge can be restored or maintained by first applying a soap or aloe vera film onto the sharpening surface and secondly removing the oxidation by sliding the cutting blade edge along a honing or sharpening surface. When only the oxidation is removed, the cutting blade edge can be maintained as long as the razor blade edge is not altered.
It is another object of this invention to utilize aloe vera gel to lubricate the glass sharpening surface to remove oxidation from the edge of the razor. The aloe vera gel allows the blade to move along the surface of the glass and not bind. The aloe vera further creates a slurry that spreads along the blade to provide even sharpening or honing of the blade.
In accordance with the present invention, an apparatus is proposed for sharpening the cutting edges of a multi-bladed cartridge razor mounted within a shaving head that is attached to a handle. A liquid aloe vera or soap-dispensing device provides a slurry solution to the sharpening surface to provide lubrication. The sharpening apparatus comprises a housing that holds a sharpening element. The soap or aloe vera dispensing apparatus is a plastic housing with a dispensing end with a cap. The housing includes a substantially elongated flat member. The housing has grooved sidewalls, and an attachment mechanism located along the opposite edges of the bottom member.
It is another object of the invention to keep the glass or mirror surface exposed to allow the person shaving to utilize the surface to view their reflection while shaving. This give the invention a dual purpose of both providing a sharpening surface and a viewing surface.
In one embodiment of the invention, a wire or string is attached to eyelet screws to provide a means to store the invention on a showerhead collar or on a wall-mounting bracket.
Referring to FIGS. 1 to 3, there is shown a honing device for a multi-bladed shaving cartridge. In this figure the housing 10 comprises a bottom wall 12, sidewalls 14 and 16, end walls 18, 20 and top plate 22. Sharpening element 13 as a substantially planar sharpening surface 15 secured to sidewalls 14 and 16, end walls 18, and bottom wall 12. The configuration of the housing is shown as a flat substantially rectangular shape, but various other configurations of the housing are contemplated including square, triangular, round, elliptical and other shapes, as long as the housing allows for a honing surface that allows for the blades of a multi-bladed cartridge to be honed.
In the preferred embodiment the honing element 13 is comprised of a smooth glass mirrored surface. Other honing elements are contemplated including diamond surfaces, metals, emery paper, sandpaper, stones, or other surfaces. In the preferred embodiment the honing or sharpening is flat, but the shape may be another shape that follows the contour of the blade that is being sharpened. It is further contemplated that the sharpening element 13 has two sides, where one side is used for sharpening, and the opposite side is a mirror used for visual reflection. This allows a person to sharpen the blade(s) on one surface and view themselves while shaving with the other surface. This two sided embodiment allows for degradation of the reflective properties of the sharpening surface without compromising the reflective properties of the reflective surface. While it has been described that the two surfaces have different functions, the two sides can both be mirror surfaces providing twice the number of reflective and sharpening surfaces.
The material from which the housing 10 is made is not critical and it may suitably be made from a material such as steel or aluminum, wood, or it may be made from plastic. In the preferred embodiment the housing is molded in a plastic material. The plastic material will not rust, is simple to manufacture and can be manufactured with high repeatability with minimal part cost.
Prior to sharpening, the sharpening process is facilitated by applying a thin coating of liquid soap or aloe vera solution onto the surface 15 from a dispenser 27 as shown in
Referring now to
Referring now to
Thus, specific embodiments and applications for a multi-blade sharpening apparatus have been disclosed. It should be apparent, however, to those skilled in the art that many more modifications besides those described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the spirit of the appended claims
This application claims priority to Utility patent application Ser. No. 10/985,386 filed Nov. 9, 2004
Number | Date | Country | |
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Parent | 10985386 | Nov 2004 | US |
Child | 11440393 | May 2006 | US |