Patent Application
20150352737
The present invention relates to a double edge safety razor and, more particularly, to a double edge safety razor with a built in alignment for the razor portion.
A double edge razor includes a handle and a head. The head may include a cap and a base, sandwiching a razor in between. Double edge razors became popular within the United States in the early 1900s. However, the Double-edge safety razors are still being designed and produced in a number of countries in one, two and three piece designs.
Current three piece double safety razor head designs do not ensure symmetrical razor blade alignment. One side of the razors head may have a greater blade exposure than the other side. This is due to the blade having too much freedom to move while being assembled for use. Asymmetrical blade alignment can cause skin irritation and nicks. When the safety razor provides unreliable shaving results the user may be at risk and has to endure uncomfortable shaves.
As can be seen, there is a need for an improved double edge razor that prevents the misalignment of the blade.
In one aspect of the present invention, a double edge safety razor comprises: a head comprising: a base comprising an aperture through the base and at least one base mating portion; and a cap comprising an outer surface and an inner surface, wherein the cap comprises at least one cap mating portion configured to mate with the at least one base mating portion, wherein the cap is configured to be releasably attachable to a handle by a post, wherein the post fits through the aperture of the base.
In another aspect of the present invention, a method of constructing a double edge safety razor comprises: providing a cap comprising a threaded peg and at least one pin; placing the threaded peg and the at least one pin through a double edged razor; providing a base comprising at least one pin hole and an aperture; placing the threaded peg through the aperture and aligning the at least one pin to fit within the at least one pin hole; and screwing the threaded peg into a threaded handle.
These and other features, aspects and advantages of the present invention will become better understood with reference to the following drawings, description and claims.
The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims.
The present invention includes a double edge safety razor head that enables easy symmetrical razor blade alignment. The razor head of the present invention includes the cap that may include two small pins that protrude outward. The pins may include a diameter as the narrowest space present in the hollow midline space of a double edge blade. When the blade is fitted over these pins the blade is very snug and has symmetrical spacing along both sides of the razor. The present invention may eliminate the ability for the blade to shift during assembly. Further, in certain embodiments, non sharpened edges extend slightly beyond the head making it possible to hold both the cap and blade for additional stability and safety while the razor is being assembled for use.
In certain embodiments, the cap of the present invention may slightly curve and has the small protruding pins that may ensure exact alignment of the blade. The portion of base that articulates with the cap may include the faceted edges of the large center bar running the length of the midline of the base plate. The center bar may include two tiny recesses or holes that fit the post or prongs found on the cap. The pairing of the cap with its two pins ensures a snug mount for the double edge blade. The base accepts the cap (and blade) precisely with the pins entering the previously described holes in the pin holes resulting in a razor head fitting and functioning as a single unit. The razors handle may then screw on to the threaded center post of the cap.
Referring to
In certain embodiments, the post 20 may be integrally attached to and extend from the inner surface of the cap 16. In such embodiments, the post 20 may have a threaded end. The handle 12 of the present invention may include a threaded receiver 22 formed to mate with and releasably attach to the threaded end of the post 20. The post 20 may fit through a channel within the razor blade 18, through the aperture 28 in the base 14 and screw into the threaded receiver 22 to construct the double edge razor assembly 10.
In certain embodiments, the mating portions may include a pin hole 26 and a pin 24 that fits within the pin hole 26. For example, the at least one base mating portion may include at least one pin hole 26, and the at least one cap mating portion may include at least one pin 24. The pin 24 may fit through the channel of the razor blade 18 and fit within the pin hole 26, properly aligning the razor blade 18 and preventing the razor blade 18 from rotating out of alignment. The diameter of the pin 24 may be the same or slightly smaller than the width of the channel so that pin 24 snuggly fits within the channel.
The at least one pin 24 of the present invention may include two pins 24 protruding from the inner surface of the cap 16. Further, the at least one pin hole 26 may include two pin holes 26 formed in the base 14. The two pins 24 may align with and fit within the two pin holes 26. In certain embodiments, the two pins 24 may be on either side of the post 20 and the two pin holes 26 may thereby be on either side of the aperture 28.
The present invention may further include additional characteristics. The head may be made of stainless steel or other appropriate materials. As illustrated in the drawings, the outer surface of the cap 16 may include a convex curve to aid in the comfort of shaving. The inner surface of the cap 16 may include a groove to accept the blade 18. Further, the edges along the length of the base 14 may be faceted. In certain embodiments, the double edge razor 18 may include a length greater than the head, i.e. greater than the cap 16 and the base 14. This will allow users to easily grasp and adjust the razor 18 properly.
A method of constructing the above double edge razor assembly 10 may include the following. The threaded peg 20 of the cap 16 and the at least one pin 24 may be placed through the channel of the double edge razor 18. The threaded peg 20 may then be placed through the aperture 28 of the base 14. The at least one pin 24 may be placed within the at least one pin hole 26 of the base 14. Thereby, the double edge razor 18 is sandwiched and properly aligned in between the base 14 and the cap 16. The threaded peg 10 may then screw into the threaded receiver 22 of the handle 12 to complete the double edge razor assembly 10.
It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims.
