Roller protective device

Abstract

A roller protective device including a bracket, an operating arm reciprocally movably mounted on the bracket for holding a roller, a cover pivotally connected with the operating arm and movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller, and a resilient member positioned between the operating arm and the cover. The resilient member always exerts a resilient force onto the cover in a direction to the first position where the cover discloses the roller. In a not used state, the cover is automatically moved to the second position where the cover encloses the roller to protect the roller from contamination of aerosols.

1 . A roller protective device comprising:
 a bracket;   an operating arm pivotally connected with the bracket and reciprocally movably mounted on the bracket;   a roller mounted on the operating arm; and   a cover movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller.   
     
     
         2 . The roller protective device as claimed in  claim 1 , wherein the bracket has a wall and a pivot section pivotally connecting with the operating arm. 
     
     
         3 . The roller protective device as claimed in  claim 2 , wherein the operation arm has a pivot section pivotally connected with the pivot section of the bracket. 
     
     
         4 . The roller protective device as claimed in  claim 1 , wherein the operating arm has a mounting section on which the roller is mounted. 
     
     
         5 . The roller protective device as claimed in  claim 4 , wherein the mounting section has a hub section or a shaft for pivotally connecting with the cover. 
     
     
         6 . The roller protective device as claimed in  claim 1 , wherein the cover has a projection or a pin. 
     
     
         7 . The roller protective device as claimed in  claim 1 , wherein a resilient member is positioned between the operating arm and the cover. 
     
     
         8 . The roller protective device as claimed in  claim 7 , wherein the resilient member has a first end abutting against a shoulder section of the operating arm and a second end fixed on the cover.