Dust shield and adapter device

Abstract

A dust shield and adapter, in combination or as separate components, for universal attachment to the bearing housings having different diameter sizes. As separate components, the shield has a skirt for covering a grinding disk and upward extending collar to which a separate component adapter attaches. The adapter has adjustable attachment members which adjustably secure to a bearing housing of numerous varying diameter sizes. The collar has cut-outs to accept the adapter and permit its upward and downward adjustability to ensure an effective distance adjustment and disk contact with a target surface. As a combination single component, the adapter is permanently attached to a collar having no cut-outs. The adapter has adjustable attachment members which adjustably secure to a bearing housing of numerous varying diameter sizes.

1 . A shield for rotary grinders comprising: 
 a cover having an upper surface and a continuous, circular skirt for enclosing a rotatable grinding disc which, when rotating, causes movement of particles and airflow in said cover;    an exhaust opening through said skirt for passage of particles and air to a connected exhaust;    a circular collar on said upper section; and    an adapter attached to said flexible collar, said adapter having adjustable attachment means for adjusting and removably attaching to different diameters of bearing housing of rotary grinders.    
   
   
       2 . The shield as claimed in  claim 1  wherein said adjustable attachment means comprises at least three registration components on said adapter each having an axially translatable bracket member therein.  
   
   
       3 . The shield as claimed in  claim 2  wherein said registration components comprise a axial slot and an axial ridge on each side of said axial slot.  
   
   
       4 . The shield as claimed in  claim 2  wherein said bracket member has a base and an upstanding gripper adapted to abut the bearing housing and be secured thereto.  
   
   
       5 . The shield as claimed in  claim 4  wherein said upstanding front gripper has a curved front edge.  
   
   
       6 . The shield as claimed in  claim 4  wherein said bracket has one or more apertures in said base.  
   
   
       7 . The shield as claimed in  claim 6  wherein said registration component further comprises a fastening member through said aperture of said bracket and through said slot.  
   
   
       8 . The shield as claimed in  claim 1  further comprising at least one air opening in said upper surface feeding air to the airflow.  
   
   
       9 . The shield as claimed in  claim 1  wherein said shield is made of a composition comprising approximately 3 parts copolymer polypropylene and approximately 1 part thermoplastic elastomer.  
   
   
       10 . The shield as claimed in  claim 1  wherein said circular collar is made of a composition comprising approximately 3 parts copolymer polypropylene and approximately 1 part thermoplastic elastomer.  
   
   
       11 . A shield for rotary grinders comprising: 
 a cover having an upper surface and a continuous, circular skirt for enclosing a rotatable grinding disc which, when rotating, causes movement of particles and airflow in said cover;    an exhaust opening through said skirt for passage of particles and air to a connected exhaust;    a circular collar on said upper section; and    one or more cut-outs in said circular collar, said cut-outs having two spaced-apart vertically cut sides connected by one horizontally cut section.    
   
   
       12 . The shield as claimed in  claim 11  further comprising at least one air opening in said upper surface feeding air to the airflow.  
   
   
       13 . The shield as claimed in  claim 11  wherein said shield is made of a composition comprising approximately 3 parts copolymer polypropylene and approximately 1 part thermoplastic elastomer.  
   
   
       14 . The shield as claimed in  claim 11  wherein said circular collar is made of a composition comprising approximately 3 parts copolymer polypropylene and approximately 1 part thermoplastic elastomer.  
   
   
       15 . An adapter for a dust shield having a circular collar, the dust shield used with rotary grinders having a bearing housing, said adapter comprising: 
 an upper surface;    a downward projecting wall around said upper surface; and    at least three registration components on said upper surface each having an axially translatable bracket member therein.    
   
   
       16 . The adapter as claimed in  claim 15  wherein said registration components comprise a axial slot and an axial ridge on each side of said axial slot.  
   
   
       17 . The adapter as claimed in  claim 15  wherein said bracket member has a base and an upstanding gripper adapted to abut the bearing housing and be secured thereto.  
   
   
       18 . The adapter as claimed in  claim 17  wherein said upstanding front gripper has a curved front edge.  
   
   
       19 . The adapter as claimed in  claim 17  wherein said bracket has one or more apertures in said base.  
   
   
       20 . The adapter as claimed in  claim 19  wherein said registration component further comprises a fastening member through said aperture of said bracket and through said slot.