Roller assembely for sharpening a knife

Abstract

A roller assembly for sharpening a knife, comprising a cylindrical body and a plurality of surface treatment sections positioned on a first lateral side and a second lateral side of the cylindrical body. Each surface treatment section coupled with the cylindrical body through individual one or more connecting elements. Each surface treatment section providing different degrees of surface treatment to the target surface including coarse grinding, fine grinding, buffing and honing. The two guide elements rotate in synchronization with a sliding movement of the roller assembly along a pitch axis of the cylindrical body. The roller assembly is adapted to provide various surface treatment to sharpening objects.

What is claimed is: 
     
         1 . A roller assembly for sharpening a knife, the roller assembly comprising:
 a cylindrical body;   a plurality of surface treatment sections positioned on a first lateral side and a second lateral side of the cylindrical body;   wherein each surface treatment section coupled with the cylindrical body through individual one or more connecting elements;   wherein each surface treatment section having a surface treatment end facing outwards from the cylindrical body for performing surface treatment of a target surface;   wherein each surface treatment section providing different degrees of surface treatment to the target surface including coarse grinding, fine grinding, buffing and honing;   at least two guide elements;   wherein each of the at least two guide elements being mounted adjacent to respective first and second lateral sides of the cylindrical body;   wherein each of the two guide elements are rings positioned to run along peripheries of the respective first and second lateral sides of the cylindrical body;   wherein the at least two guide elements are positioned to be in contact with a surface;   wherein at least two guide elements allowing the cylindrical body to slide on the surface;   wherein the at least two guide elements rotate in synchronization with a sliding movement of the roller assembly along a pitch axis of the cylindrical body;   wherein during the sliding movement, the cylindrical body and its plurality of surface treatment sections remains stationary along the pitch axis of the cylindrical body.   
     
     
         2 . The roller assembly according to  claim 1 , wherein the roller assembly includes a cylindrical body, connecting elements, surface treatment sections and guide elements. 
     
     
         3 . The roller assembly according to  claim 1 , wherein the surface treatment section is coupled to the cylindrical body by connecting elements. 
     
     
         4 . The roller assembly according to  claim 1 , wherein the connecting elements may be selected from screws or nails. 
     
     
         5 . The roller assembly according to  claim 1 , wherein the cylindrical body may be made of wood, plastic or metal, preferably wood. 
     
     
         6 . The roller assembly according to  claim 1 , wherein the cylindrical body may be made of wood, plastic or metal, preferably wood. 
     
     
         7 . The roller assembly according to  claim 1 , wherein the connecting ring may be made of wood, plastic or metal, preferably wood 
     
     
         8 . The roller assembly according to  claim 1 , wherein the guide element may be made of hard or soft plastic, preferably hard plastic material. 
     
     
         9 . The roller assembly according to  claim 1 , wherein surface treatment sections are substantially semi-circular in shape so as to make a substantial circular shape in combination. 
     
     
         10 . An apparatus for sharpening a knife, the apparatus comprising:
 a holding element;   wherein the holding element comprises a holding surface for holding the knife; an angle changing mechanism;   an angle changing mechanism;   wherein angle changing mechanism configured to change an angle of the holding surface and;   a roller assembly for sharpening a knife, the roller assembly comprising;   a cylindrical body;   a plurality of surface treatment sections positioned on a first lateral side and a second lateral side of the cylindrical body;   wherein each surface treatment section coupled with the cylindrical body through individual one or more connecting elements;   wherein each surface treatment section having a surface treatment end facing outwards from the cylindrical body for performing surface treatment of a target surface;   wherein each surface treatment section providing different degrees of surface treatment to the target surface including coarse grinding, fine grinding, buffing and honing;   at least two guide elements;   wherein each of the at least two guide elements being mounted adjacent to respective first and second lateral sides of the cylindrical body;   wherein each of the two guide elements are rings positioned to run along peripheries of the respective first and second lateral sides of the cylindrical body;   wherein the at least two guide elements are positioned to be in contact with a surface;   wherein at least two guide elements allowing the cylindrical body to slide on the surface;   wherein the at least two guide elements rotate in synchronization with a sliding movement of the roller assembly along a pitch axis of the cylindrical body;   wherein during the sliding movement, the cylindrical body and its plurality of surface treatment sections remains stationary along the pitch axis of the cylindrical body.   
     
     
         11 . The apparatus according to  claim 10 , wherein holding element is a magnetic element. 
     
     
         12 . The apparatus according to  claim 10 , wherein holding element is a magnetic element. 
     
     
         13 . The apparatus according to  claim 10 , wherein angle can be adjusted between 5-45 degree with a precision of 5 degree. 
     
     
         14 . The apparatus according to  claim 10 , wherein a scale is placed at outer face of angle changing mechanism to assist the user in accurately choosing the desired angle for sharpening the knife edges. 
     
     
         15 . The apparatus according to  claim 10 , wherein to sharpen the knife, the user can grip the cylindrical body and slide it along the pitch axis. 
     
     
         16 . The apparatus according to  claim 10 , wherein a holding surface provides the magnetic coupling of the knife to holding element.