Cover for a Photoresist Container

Abstract

A cover for a photoresist container includes a cap assembly and a threaded connector. The cap assembly includes a mounting plate, a connecting base and a cover plate. The mounting plate has a bottom surface, a top surface and a central hole defined through the mounting plate. The connecting base is mounted in the central hole of the mounting plate and abuts the bottom surface of the mounting plate. The cover plate is mounted on the top surface of the mounting plate and is connected to the connecting base. The threaded connector is connected detachably to the mounting plate and has a passing hole defined through the threaded connector and having an inner thread. When the inner thread of the threaded connector is worn off or damaged, the threaded connector can be detached and replaced easily and conveniently.

1 . A cover for a photoresist container comprising
 a cap assembly comprising
 a mounting plate having
 a bottom surface; 
 a top surface; and 
 a central hole being defined through the mounting plate; 
 
 a connecting base being mounted in the central hole of the mounting plate and abutting the bottom surface of the mounting plate; and 
 a cover plate being mounted on the top surface of the mounting plate and being connected to the connecting base; and 
   a threaded connector being connected detachably to the mounting plate and having a passing hole defined through the threaded connector and having an inner thread.   
     
     
         2 . The cover for a photoresist container as claimed in  claim 1 , wherein
 the mounting plate has multiple mounting holes defined through the mounting plate; and   the threaded connector has
 multiple threaded bores being defined in the threaded connector and respectively corresponding to and aligned with the mounting holes of the mounting plate; and 
 multiple fastening bolts being mounted through the mounting holes of the mounting plate and being screwed into the threaded bores of the threaded bores. 
   
     
     
         3 . The cover for a photoresist container as claimed in  claim 2 , wherein
 the mounting plate further has an annular recess defined in the bottom surface of the mounting plate and being adjacent to the central hole; and   the connecting base further has an annular flange held in and engaging the annular recess of the mounting plate.   
     
     
         4 . The cover for a photoresist container as claimed in  claim 3 , wherein
 the connecting base further has multiple threaded bores defined in the connecting base; and   the cover plate further has
 multiple through holes being defined through the cover plate and respectively corresponding to and being aligned with the threaded bores of the connecting base; and 
 multiple connecting bolts being mounted respectively through the through holes and being screwed respectively into the threaded bores of the connecting base. 
   
     
     
         5 . The cover for a photoresist container as claimed in  claim 4 , wherein
 the mounting plate further has
 multiple positioning holes being defined through the mounting plate; and 
 multiple positioning pins being mounted respectively in the positioning holes and protruding from the bottom surface of the mounting plate; and 
   the threaded connector further has multiple positioning bores defined in the threaded connector, aligned respectively with the positioning holes of the mounting plate and respectively engaging the positioning pins of the mounting plate.   
     
     
         6 . The cover for a photoresist container as claimed in  claim 5 , wherein
 the mounting plate further has multiple detaching holes defined through the mounting plate.   
     
     
         7 . The cover for a photoresist container as claimed in  claim 1 , wherein
 the mounting plate further has an annular recess defined in the bottom surface of the mounting plate and being adjacent to the central hole; and   the connecting base further has an annular flange held in and engaging the annular recess of the mounting plate.   
     
     
         8 . The cover for a photoresist container as claimed in  claim 1 , wherein
 the connecting base further has multiple threaded bores defined in the connecting base; and   the cover plate further has
 multiple through holes being defined through the cover plate and respectively corresponding to and being aligned with the threaded bores of the connecting base; and 
 multiple connecting bolts being mounted respectively through the through holes and being screwed respectively into the threaded bores of the connecting base. 
   
     
     
         9 . The cover for a photoresist container as claimed in  claim 1 , wherein
 the mounting plate further has
 multiple positioning holes being defined through the mounting plate; and 
 multiple positioning pins being mounted respectively in the positioning holes and protruding from the bottom surface of the mounting plate; and 
   the threaded connector further has multiple positioning bores defined in the threaded connector, aligned respectively with the positioning holes of the mounting plate and respectively engaging the positioning pins of the mounting plate.   
     
     
         10 . The cover for a photoresist container as claimed in  claim 1 , wherein
 the mounting plate further has multiple detaching holes defined through the mounting plate.