Device for punching holes in artificial fingernails
OwnerKarl Sutterlininventor
Life of this patent
Estimating the term…
Abstract
A device for punching holes in artificial fingernails comprising a piston-cylinder unit having a cylinder wall with an aperture in it extending across the whole of the cylinder. The aperture is banana-shaped in cross-section and wider than the internal diameter of the cylinder with the convex side of the aperture facing the piston. The pointed end of the piston has a sharp knife-edge. The hole punch is operated by holding it between the thumb and index and middle fingers and pressing, causing the pointed end of the piston to travel past the curved cylinder-wall aperture in which the artificial fingernail to be perforated has been placed.
Claims20
A device for perforating artificial fingernails comprising:
- a piston-cylinder unit;
- a wall of a hollow cylinder (10) of said piston-cylinder unit having a transverse aperture (11) which is banana-shaped in cross section, convexly curved in relation to a piston (9) in said piston-cylinder unit, extends through the entire said hollow cylinder (10), and is wider than an interior diameter of the hollow cylinder (10);
- and a piston tip (12) of the piston (9) having a sharp edge (13) honed into a knife.
A device for perforating artificial fingernails comprising:
- a piston-cylinder unit;
- a wall of a hollow cylinder (10) of said piston-cylinder unit forming a concave indentation (16) for receiving a fingertip wearing an artificial fingernail (8) to be punched and further forming a transverse aperture (11) immediately above said concave indentation (16) which is banana-shaped in cross section, convexly curved in relation to a piston (9) in said piston-cylinder unit, extends through the entire said hollow cylinder (10), and is wider than an interior diameter of the hollow cylinder (10);
- a piston tip (12) of the piston (9) having a sharp edge (13)honed into a knife, said sharp edge (13) comprising a curve made of two connected S-curves along a circumference of the piston (9), an interior of the piston (9) set back in respect to the sharp edge (13), whereby said sharp edge (13) protrudes in an axial direction, and the piston (9) oriented inside the hollow cylinder (10) whereby portions of the sharp edge (13) protruding farthest in an axial direction are located opposite a highest point of the transverse aperture (11) in the wall of hollow cylinder (10) such that when the piston (9), is pushed in, two edge tips (14) of said sharp edge (13) first traverse the transverse aperture (11).
Dependencies are inferred from the claim text.