Precision sharpener tool

Abstract

A precision sharpening tool is disclosed, having an opposing sharpening elements arranged to form a generally “V” shaped sharpening slot and first and second elongate guide members arranged on opposite sides of the sharpening slot which comprise mating toothed spur gears arranged so that turning the guide pin element of the first guide member simultaneously turns the guide pin element of said second guide member in aligned mirrored movement.

1 . A sharpening tool comprising: 
 opposing sharpening elements arranged to form a generally “V” shaped sharpening slot;    first and second elongate guide members extending from opposite sides of said sharpening slot, each comprising a base spur gear element and an elongate eccentric guide pin element;    wherein a base spur gear element comprises a mounting shaft having a toothed gear at a first end and an elongate eccentric guide pin element at the opposite end, the toothed gear of said first guide member arranged in mating engagement with the toothed gear of said second guide member.    
   
   
       2 . The sharpening tool of  claim 1  wherein a centerline of a guide pin element is arranged offset from a centerline of a mounting shaft of a spur gear element of an elongate guide member.  
   
   
       3 . The sharpening tool of  claim 1  wherein said guide pin elements are arranged about equidistant from and generally parallel to a bisecting plane of said generally “V” shaped sharpening slot.  
   
   
       4 . The sharpening tool of  claim 3  arranged so that turning the guide pin element of said first guide member simultaneously turns the guide pin element of said second guide member in aligned mirrored movement.  
   
   
       5 . The sharpening tool of  claim 1  wherein said sharpening elements are arranged in off-set overlapping opposition.  
   
   
       6 . The sharpening tool of  claim 5  wherein said opposing sharpening elements comprise polygonal plates, arranged so that sharpening edges thereof forms the generally “V” shaped sharpening slot.  
   
   
       7 . The sharpening tool of  claim 6  wherein said opposing sharpening elements comprise two overlapping quadrilateral plates having abrading edges.  
   
   
       8 . The sharpening tool of  claim 5  wherein said opposing sharpening elements comprise disks.  
   
   
       9 . The sharpening tool of  claim 8  wherein a plurality of opposing sharpening disks are generally mounted in interleaved about parallel stacks, forming the generally “V” shaped sharpening slot.  
   
   
       10 . The sharpening tool of  claim 8  wherein said disks are rotationally driven.  
   
   
       11 . The sharpening tool of  claim 8  wherein said disks comprise a cylindrical abrading surface.  
   
   
       12 . The sharpening tool of  claim 5  wherein said disks comprise an abrading edge.  
   
   
       13 . The sharpening tool of  claim 1  wherein said the angle of the vertex of said generally “V” shaped sharpening slot, is from about 35 degrees to about 45 degrees.  
   
   
       14 . The sharpening tool of  claim 12  wherein said the angle of the vertex of said generally “V” shaped sharpening slot, is about 40 degrees.  
   
   
       15 . The sharpening tool of  claim 1  wherein said first and second guide members support a knife blade along about the bisect plane of said generally “V” shaped sharpening slot.  
   
   
       16 . The sharpening tool of  claim 1  wherein a guide pin element is configured to engage a tool for turning.  
   
   
       17 . The sharpening tool of  claim 1  wherein an eccentric guide pin element is arranged to circumscribe a diameter greater than the diameter of the shaft of the spur gear element.  
   
   
       18 . The sharpening tool of  claim 1  wherein the shaft of the spur gear element comprises a hollow and a shaft of the guide pin element is securely pressed therein for attachment thereto.  
   
   
       19 . The sharpening tool of  claim 1  wherein a guide pin element comprises a rotatable cylindrical surface.  
   
   
       20 . The sharpening tool of  claim 7  wherein a sharpening element comprises a quadrilateral plate having generally parallel sharpening edges and generally parallel angled ends, said ends being angled so that when sharpening edges of the plates are arranged to form the generally “V” shaped sharpening slot, the ends thereof lay at about a 90° angle to a centerline bisecting the “V” shaped sharpening slot.  
   
   
       21 . The sharpening tool of  claim 20  comprising screw means arranged to adjustably engage adjacent angled ends of sharpening elements retained in a generally “V” shaped orientation.  
   
   
       22 . The sharpening tool of  claim 20 , comprising a levered means arranged to adjustably engage adjacent angled ends of sharpening elements retained in a generally “V” shaped orientation.  
   
   
       23 . A sharpening tool comprising: 
 a mounting block, comprising slots arranged for mounting opposing sharpening elements comprising overlapping rectilinear plates having sharpening edges arranged in a generally “V” shaped sharpening slot arrangement;    first and second elongate guide members extending from said mounting block on opposite sides of said sharpening slot, each guide member comprising a base spur gear element and an elongate eccentric guide pin element;    said base spur gear elements comprising a mounting shaft having a toothed gear at a first end and an elongate eccentric guide pin element at the opposite end;    wherein the toothed gears of said first guide member is arranged in mating engagement with the toothed gear of said second guide member in a hollow of said mounting block.    
   
   
       24 . The sharpening tool of  claim 23  wherein said sharpening elements have generally parallel sharpening edges and generally parallel angled ends, said ends being angled so that when sharpening edges of the plates are arranged to form the generally “V” shaped sharpening slot, the ends thereof lay at about a 90° angle to a centerline bisecting the “V” shaped sharpening slot.  
   
   
       25 . The sharpening tool of  claim 24  comprising screw means arranged to adjustably engage adjacent angled ends of sharpening elements retained in a generally “V” shaped orientation.  
   
   
       26 . The sharpening tool of  claim 24 , comprising a levered means arranged to adjustably engage adjacent angled ends of sharpening elements retained in a generally “V” shaped orientation.  
   
   
       27 . A quadrilateral plate sharpening element comprising opposing generally parallel sharpening edges and opposing generally parallel angled ends, said ends being angled to said edges so that when sharpening edges of opposing plate sharpening elements are arranged to form a generally “V” shaped sharpening slot, ends of the opposing plates lay at about a 90° angle to a centerline bisecting the “V” shaped sharpening slot.  
   
   
       28 . A sharpening element of  claim 27  wherein an included angle of an angled end to a sharpening edge is about 70 degrees.