The disclosed technology relates generally to a scraping blade for the nails or skin, and more specifically to a tool with a cutting edge acutely angled to a direction of movement of the scraping.
A scarping device of embodiments of the disclosed technology has a first and second handle which rotatably joined at a pivot joint (herein, also “joint”). Connected to/moving with each handle is a blade on the other side of the joint such that movement of a handle moves the blade in the same rotational direction around the pivot joint. One of the blades is a dull blade (“dull” being defined as a blade which, when placed against a surface of skin, does not ordinarily cause bleeding or cutting, or is not designed to cause bleeding or cutting). The other blade is a sharp blade (“sharp” being defined as a blade which, when placed into skin, does ordinarily cause bleeding or cutting, or is designed to cause bleeding or cutting).
The handles, blades, and pivot joints generally move or rotate within the same plane, such as an XY plane. Each has a longest linear or curvilinear extent extending within this XY plane as well, in embodiments of the disclosed technology. That is, the furthest straight (linear) or curved around an exterior side (curvilinear) distance is within the XY plane. However, an exception or difference to the longest extent being in the XY plane is made when one of the blades is rotated out of this plane into a XZ plane. In some embodiment, one or both blades is rotatable relative to the handles in the Z direction, placing the longest extent (linear and/or curvilinear) in an XZ plane. In other embodiments, one or both blades is fixed such that the longest extent (linear and/or curvilinear) are outside of the XY plane and in an XZ plane relative to the handles connected there-to.
As such, the sharp blade is designed to be twisted in and out of the XZ plane in some embodiment, and is permanently turned relative to the XY plane such that it is outside of the XY plane in longest extent and/or along a length of a cutting edge of the sharp blade. Such an angle of the cutting edge of the sharp blade can be between or exactly 25, 30, or 35 degrees which have been found to be optimal, in some uses, to shave/thin or smooth a toenail or fingernail and/or a growth there-on.
The dull blade is adapted to support a ventral side of a finger or toe while the cutting edge of the blade scrapes against a nail on a dorsal side of The finger or toe in embodiments of the disclosed technology. The joint allows rotation of the dull blade and the sharp blade, in some embodiments, only in the XY plane while the cutting edge of the sharp blade is offset from the XY plane in which the first handle and the second handle occupy (meaning, any such XY plane occupied by both the handles).
In a method of using the device, the dull blade is held under a ventral side of a finger or toe and the sharp blade is scraped, at an acute angle thereto, along a nail of The finger or the toe reducing thickness of the finger or the toe. When doing so, the sharp blade may be fixed at a 30 degree angle to the XY plane.
Described another way, a scraping device of embodiments of the disclosed technology has a first and second blade movable towards and away from each other by way of a pivot joint. The second blade can have a concave side opening towards the second blade. The first blade has a cutting edge at an (acute) angle offset to the direction that the first and second blade are movable towards and away from each other.
The angle of offset of the first blade relative to the direction that the first and the second blade are movable towards and away from each other is between 25 and 35 degrees in some embodiments, such as at 30 degrees. The first blade can be in a shape of a semi-ellipse (half ellipse).
A finger, toe, or other body part is then scraped, in embodiments of the disclosed technology, by moving the angle-offset blade along a surface thereof. This can thin a nail, smooth a nail, or remove a growth on a nail or skin.
Any device or step to a method described in this disclosure can comprise or consist of that which it is a part of, or the parts which make up the device or step. The term “and/or” is inclusive of the items which it joins linguistically and each item by itself.
A scraping device has a scissor-like construction with two blades, each connected to a same joint at proximal ends thereof. Each blade can be curvilinear and extend in a same plane as handle of the device, the plane, for example, being in a plane where the handles and blades rotate around a pivot joint and relative to one another. One of the blades is more dull than the other, the dull blade adapted to abut a part of the human body without causing any permanent physical change thereto, and the other being sharper than the dull blade which is designed to cut or remove part of the body.
In some embodiments, one or both blades are rotatable in a plane which is normal to the direction of rotation of the handles relative to each other. In other embodiments, the blades are fixed at an angle relative to the handles and/or direction of movement of the handles. The dull blade may be inline with the handles while the sharp blade and/or cutting edge of the sharp blade is out of line therewith. “Inline” is defined as “extending in a longest curved or linear extent being in the same plane thereto.” “Out of line” is defined as “extending in a longest curved or linear extent in a different plane therefrom.”
Embodiments of the disclosed technology will become more clear in view of the following discussion of the drawings.
The above, with reference to
The angle of the dull blade 20 may be set based on what will best allow the concave curvilinear side thereof to move across skin of a person smoothly or as smoothly as reasonable possible. The dull blade can have side flanges 22 which extend from a spine at a 90 degree angle thereto. The sharp blade 10, which refers to, for example, the entirety of the curvilinear flange connected to the semi-elliptical (half of an ellipse) portion with cutting edge 12. The cutting edge is used, in embodiments of the disclosed technology, to scrape across an exterior of a person such as their skin or nail to either thin, shave or smooth same. The cutting edge 10 may be moved to be, or permanently, out of line with the rest of the device. That is, it is an XZ plane compared to the handles which can further be viewed as being within an XY plane which the handles do not occupy. This XY plane of the cutting edge 12 of the sharp blade 10 is thus said to have been “turned” in an XZ direction making it in it's own XY plane that is different than any XY plane of the handles. Said yet another way, the cutting edge 12 is front most extent of the handle 30 and 40 as well as the joint 50 when considering the blades to be at the “top” and opposite extent of the handles as the “bottom.”
Blade 110 is a standard angle blade that is sharp only along a single edge. Blade 110 is sharpened enough to debulk nails, without being excessively sharp so as to pose a danger to piercing skin. Blade 110 is attached to and removable from base 130, as illustrated in
Jaw 120 is a generally rectangular-shaped component that is curved toward blade 110. Jaw 120 is composed of a hard but slightly malleable material such as plastic or rubber. Jaw 120 is attached to and removable from base 130 by means of connector 125 and shown in
The surface of jaw 120 that faces blade 110 is a curved surface composed of rubber, plastic, or another suitable material such as malleable steel that allows skin to rest against the surface without significant movement or slipping. Jaw 120 is sized and shaped appropriately to allow for a toe to be propped against it for debulking by blade 110.
For purposes of this disclosure, the term “substantially” is defined as “at least 95% of” the term which it modifies.
Any device or aspect of the technology can “comprise” or “consist of” the item it modifies, whether explicitly written as such or otherwise.
When the term “or” is used, it creates a group which has within either term being connected by the conjunction as well as both terms being connected by the conjunction.
While the disclosed technology has been disclosed with specific reference to the above embodiments, a person having ordinary skill in the art will recognize that changes can be made in form and detail without departing from the spirit and the scope of the disclosed technology. The described embodiments are to be considered in all respects only as illustrative and not restrictive. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope. Combinations of any of the methods and apparatuses described hereinabove are also contemplated and within the scope of the invention.
Number | Name | Date | Kind |
---|---|---|---|
2127190 | Solomon | Aug 1938 | A |
2753626 | Bowers | Jul 1956 | A |
3680210 | Steinman | Aug 1972 | A |
4062109 | Min | Dec 1977 | A |
5437679 | Gaillard | Aug 1995 | A |
6176866 | Christoudias | Jan 2001 | B1 |
20030065358 | Frecker | Apr 2003 | A1 |
20050257375 | Wakefield | Nov 2005 | A1 |
20080004650 | George | Jan 2008 | A1 |
20090308211 | McBride | Dec 2009 | A1 |
20140041195 | Hoang | Feb 2014 | A1 |
Number | Date | Country | |
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20200214420 A1 | Jul 2020 | US |
Number | Date | Country | |
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Parent | 15456148 | Mar 2017 | US |
Child | 16823196 | US |