US2011021117A1PendingUtilityA1

Lightweight flap wheel

37
Individually held — no corporate assignee on recordPriority: Jul 21, 2009Filed: Jul 20, 2010Published: Jan 27, 2011
Est. expiryJul 21, 2029(~3 yrs left)· nominal 20-yr term from priority
Inventors:Douglas M. BullockAndrew C. Cross
B24D 13/06
37
PatentIndex Score
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Claims

Abstract

A rotary finishing device is provided comprising a substantially solid hub having an inner periphery and an outer periphery, the inner periphery defining an axial throughhole. The device further provides a plurality of slots formed about the outer periphery of a generally circular hub, each of the plurality of slots being defined by a pair of side portions extending from the outer periphery. Each of the pair of side portions includes a tip portion, an intermediate side surface portion, and a base portion. The slot increases in width from the outer periphery to the base portion. A finishing media is secured in each of the plurality of slots by an epoxy resin, wherein each of the slots is consumed in its entirety by a combination of mounting ends of the finishing media and the epoxy resin. The hub and the consumed slots form a solid integral finishing device extending from the inner periphery to the outer periphery.

Claims

exact text as granted — not AI-modified
1 . A rotary finishing device, comprising:
 a substantially solid hub having an inner periphery and an outer periphery, said inner periphery defining an axial throughhole;   said axial throughhole defines a passage way for mounting onto an axle for driving said rotary finishing device;   a plurality of slots formed about said outer periphery of a generally circular said hub, each of said plurality of slots being defined by a pair of side portions extending from said outer periphery;   each of said pair of side portions including a tip portion, an intermediate side surface portion, and a base portion;   wherein said slots are proximal to said outer periphery and distal to said inner periphery;   wherein each of said tip portions has a generally flat apex;   at least a portion of each of said side surface portions are further defined as straight;   said slot increases in width from said outer periphery to said base portion;   a finishing media secured in each of said plurality of slots by an epoxy resin, wherein each of said slots is consumed in its entirety by a combination of mounting ends of the finishing media and said epoxy resin; and,   said hub and said consumed slots forming a solid integral finishing device extending from said inner periphery to said outer periphery.   
     
     
         2 . The rotary finishing device of  claim 1 , wherein said generally circular hub is a solid core hub. 
     
     
         3 . The rotary finishing device of  claim 2 , wherein said solid core hub is formed of a material selected from the group consisting of polymer, PVC, acrylic, polycarbonate, and ABS. 
     
     
         4 . The rotary finishing device of  claim 2 , wherein said solid core hub is formed of a material selected from the group consisting of nylon, delrin, phenolic resin, and polyester. 
     
     
         5 . The rotary finishing device of  claim 3 , wherein said hub is formed by an extrusion process. 
     
     
         6 . The rotary finishing device of  claim 4 , wherein said hub is formed by an extrusion process. 
     
     
         7 . The rotary finishing device of  claim 1 , wherein at least a portion of each of said plurality of slots are subjected to a surface heat treatment process to assist in bonding said finishing media and said epoxy resin to said generally circular hub. 
     
     
         8 . A rotary finishing device comprising:
 a substantially solid hub having an inner periphery and an outer periphery, said inner periphery defining an axial throughhole;   said axial throughhole defines a passage way for mounting onto an axle for driving said rotary finishing device;   a plurality of slots formed about said outer periphery of a generally circular said hub, each of said plurality of slots being defined by a pair of side portions extending from said outer periphery;   each of said pair of side portions including a tip portion, an intermediate side surface portion, and a base portion;   wherein said slots are proximal to said outer periphery and distal to said inner periphery;   at least a portion of each of said side surface portions are further defined as straight;   said slot increases in width from said outer periphery to said base portion;   a finishing media secured in each of said plurality of slots by an epoxy resin, wherein each of said slots is consumed in its entirety by a combination of mounting ends of the finishing media and the epoxy resin;   a plurality of mounting lugs are formed through the hub to facilitate mounting and driving of the rotary finishing device, wherein said mounting lugs are positioned offset from a center of said hub;   under centrifugal load each of said slots exerts forces to an adjacent said slot to increase securement of said finishing media in each of said slots;   said plurality of slots being generally uniformly spaced around said generally circular hub; and,   said hub and said consumed slots forming a solid integral finishing device extending from said inner periphery to said outer periphery.   
     
     
         9 . The rotary finishing device of  claim 8 , wherein each of said tip portions has a generally flat apex. 
     
     
         10 . The rotary finishing device of  claim 8 , wherein said generally circular hub is formed of a material selected from the group consisting of polymer, PVC, acrylic, polycarbonate, and ABS. 
     
     
         11 . The rotary finishing device of  claim 8 , wherein said generally circular hub is formed of a material selected from the group consisting of nylon, delrin, phenolic resin, and polyester. 
     
     
         12 . The rotary finishing device of  claim 10 , wherein said generally cylindrical hub is formed by an extrusion process. 
     
     
         13 . The rotary finishing device of  claim 11 , wherein said generally cylindrical hub is formed by an extrusion process. 
     
     
         14 . The rotary finishing device of  claim 10 , wherein said generally circular hub is formed by moulding. 
     
     
         15 . The rotary finishing device of  claim 11 , wherein said generally circular hub is fowled by moulding. 
     
     
         16 . The rotary finishing device of  claim 8 , wherein at least a portion of each of said plurality of slots are subjected to a surface heat treatment process to assist in bonding said finishing media and said epoxy resin to said generally circular hub. 
     
     
         17 . A rotary finishing device comprising:
 a substantially solid hub having an inner periphery and an outer periphery, said inner periphery defining an axial throughhole;   said axial throughhole defines a passage way for mounting onto an axle;   a plurality of slots formed about said outer periphery of a generally circular said hub, each of said plurality of slots being defined by a pair of side portions extending from said outer periphery;   each of said pair of side portions including a tip portion, an intermediate side surface portion, and a base portion;   wherein said slots are proximal to said outer periphery and distal to said inner periphery;   at least a portion of each of said side surface portions are further defined as straight;   said slot increases in width from said outer periphery to said base portion;   a finishing media secured in each of said plurality of slots by an adhesive, wherein each of said slots is consumed in its entirety by a combination of mounting ends of the finishing media and the adhesive;   under centrifugal load each of said slots exerts forces to an adjacent said slot to increase securement of said finishing media in each of said slots;   said plurality of slots being generally uniformly spaced around said generally circular hub;   said hub and said consumed slots forming a solid integral finishing device extending from said inner periphery to said outer periphery thereby reducing a moment of inertia of said hub; and,   wherein said generally circular hub is formed of a material selected from the group consisting of nylon, delrin, phenolic resin, and polyester.   
     
     
         18 . The rotary finishing device of  claim 17 , wherein said moment of inertia of said hub is about one-half the moment of inertia of a hoop-like hub having substantially the same mass and radius of said hub. 
     
     
         19 . The rotary finishing device of  claim 17 , wherein said generally cylindrical hub is formed by an extrusion process. 
     
     
         20 . The rotary finishing device of  claim 17 , wherein said generally circular hub is formed by moulding.

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