Device for closing a pot-like digestion vessel

Abstract

A device 5 for closing pot-like digestion vessel 1 whose opening is covered by a cover 3, has a pressure-applying plunger 6, a screwing part 7 arranged co-axially with the pressure applying plunger 6 and a resilient pressure-generating means 8 arranged between the pressure-applying plunger 6 and the screwing part. The screwing part and the pressure-applying plunger 6 fit round one another in a socketed arrangement.

1 . Device for closing a pot-like digestion vessel whose opening is covered by a cover, said device comprising: 
 a pressure-applying plunger;    a screwing part arranged co-axially with the pressure-applying plunger; and    a resilient pressure-generating means arranged between the pressure-applying plunger and the screwing part,    one of the screwing part and the pressure-applying plunger being fitted around the other in a socketed arrangement.    
     
     
         2 . Device according to  claim 1 , 
 wherein an annular wall extends from the screwing part and fits around the pressure-applying plunger.    
     
     
         3 . Device according to  claim 2 , further including 
 a ring seal arranged between the annular wall and the pressure applying plunger.    
     
     
         4 . Device according to  claim 3 , wherein 
 the ring seal is formed by a sealing ring made of resilient material, said ring seal being mounted in at least one of an annular groove in the circumferential surface of the annular wall and the outer circumferential surface of the pressure applying plunger.    
     
     
         5 . Device according to  claim 1 , wherein 
 the screwing part has an outside thread.    
     
     
         6 . Device according to  claim 5 , wherein 
 the screwing part is screwed into a fixed abutment which is located above the screwing part and the pressure-applying plunger.    
     
     
         7 . Device for closing a pot-like digestion vessel whose opening is covered by a cover, said device comprising: 
 a pressure-applying plunger;    a screwing part which fits around the pressure-applying plunger, said screwing part having a screw thread in a bottom edge region thereof; and    an abutment which surrounds the digestion vessel, said abutment being formed by a supporting ring which is fixed to a circumferential region of the digestion vessel.    
     
     
         8 . Device according to  claim 2 , wherein 
 the supporting ring is fastenable to an outer circumferential surface of, fits under a flange of, or is formed on a flange of a digestion vessel.    
     
     
         9 . Device according to  claim 7  or  8 , wherein 
 the pressure-applying plunger is guided to slide move axially along a hollow cylindrical slide face on the screwing part.  
 
     
     
         10 . Device according to  claim 9 , wherein 
 axially spaced annular grooves are arranged in the cylindrical slide face of the pressure-applying plunger.    
     
     
         11 . Device according to  claim 7 , wherein 
 the pressure-applying plunger is U-shaped in cross-section, and wherein    a resilient pressure-generating means is arranged in a recess created by the U-shaped cross-section of the pressure-applying plunger.    
     
     
         12 . Device according to  claim 11 , wherein 
 the resilient pressure-generating means is formed by disc or coil spring means.    
     
     
         13 . Device according to  claim 7 , wherein 
 a co-axial hole is formed in the pressure-applying plunger.    
     
     
         14 . Device according to  claim 7 , wherein 
 the screwing part has a guiding section in its top region for guiding an extension which extends from the pressure-applying plunger.    
     
     
         15 . Device according to  claim 7 , wherein the screwing apart is provided at its top with a formation for receiving a rotational force.  
     
     
         16 . Device according to  claim 7 , wherein 
 the pressure-applying plunger forms a digestion vessel cover.    
     
     
         17 . Device according to  claim 7 , wherein, 
 a position-indicating marking is arranged between the screwing part and the abutment.