Closure cap for an automotive radiator

Abstract

The invention relates to a closure cap ( 10 ) for a stationary reservoir neck, especially of an automotive radiator. Said cap has a cap outer part ( 16 ) and a cap inner part ( 15 ), and the cap outer part ( 16 ) comprises a closure element ( 17 ) for the reservoir neck and a grip element ( 18 ) that permits it to be rotated relative thereto. A torsional stop ( 19 ) is provided between the grip element and the closure element ( 17 ) of the cap outer part ( 16 ). The torsional stop ( 19 ) that can be/is engaged under the action of a spring can be disengaged by a thermally or pressure-controlled drive ( 14 ). Said drive ( 14 ) is disposed in a zone of the cap inner part ( 15 ) facing the reservoir interior. A mechanical motion transfer device ( 70 ) is arranged between the drive ( 14 ) and the torsional stop ( 19 ) and extends off-set from the central axis of the closure cap ( 10 ).

1 - 15 . (canceled)  
   
   
       16 . A closure cap for a fixed neck of a container, in particular a motor vehicle radiator, having: 
 an outer cap element, including a closure element for the container neck and a grip element, which can be rotated in relation to the latter, between which said grip element and said closure element a twist-prevention device acts;    an inner cap element, including a flow connection between the interior of the container and the exterior of the container and a valve arrangement for releasing or blocking the flow connection, said valve arrangement including an axially movable overpressure valve body, which can be lifted off a seal, and an underpressure valve body;    a thermally or pressure-controlled drive mechanism; and    a mechanical movement transfer device, wherein:    said twist-prevention device can be disengaged by means of said thermally or pressure-controlled drive mechanism, preferably in the form of a capsule made of an expandable material, or of a diaphragm said thermally or pressure-controlled drive mechanism being arranged in an area of said inner cap element facing the interior of the container; and said mechanical movement transfer device, which extends eccentrically with respect to the center axis of the closure cap, is arranged between said drive mechanism and said twist-prevention device.    
   
   
       17 . The closure cap in accordance with  claim 16 , wherein: 
 said movement transfer device has at least one axially extending actuating rod.    
   
   
       18 . The closure cap in accordance with  claim 17 , further having: 
 an axially movable pressure element provided between said actuating rod and said thermally or pressure-controlled drive mechanism.    
   
   
       19 . The closure cap in accordance with  claim 16 , further having: 
 a cup-shaped housing element, wherein:    said thermally or pressure-controlled drive mechanism is arranged in said cup-shaped housing element, which is held on the underside of said inner cap element.    
   
   
       20 . The closure cap in accordance with  claim 19 , wherein: 
 said cup-shaped housing element is fastened to the underside of a valve cup of said inner cap element.    
   
   
       21 . The closure cap in accordance with  claim 19 , wherein: 
 said cup-shaped housing element is provided with axial openings pointing towards the interior of the container.    
   
   
       22 . The closure cap in accordance with  claim 19 , wherein: 
 said cup-shaped housing element or its lid element is provided with radial openings pointing towards the interior of the container.    
   
   
       23 . The closure cap in accordance with  claim 19 , wherein: 
 a diaphragm is clamped in a pressure-proof manner in said cup-shaped housing element.    
   
   
       24 . The closure cap in accordance with  claim 23 , wherein: 
 diaphragm is clamped in a pressure-proof manner between a circumferential edge of said cup-shaped housing element and a lid element.    
   
   
       25 . The closure cap in accordance with  claim 24 , wherein: 
 said element is provided with axial and/or radial openings.    
   
   
       26 . The closure cap in accordance with  claim 19 , wherein: 
 said actuating rod(s) axially penetrate said valve cup eccentrically in respect to said overpressure/underpressure valve arrangement.    
   
   
       27 . The closure cap in accordance with  claim 16 , wherein: 
 said twist-prevention device is constituted by an approximately U-shaped blocking plate, which rests, charged by a spring, on preferably several actuating rods, which are arranged distributed over the circumference of said inner cap element.    
   
   
       28 . The closure cap in accordance with  claim 27 , wherein: 
 said U-shaped blocking plate is connected with the grip element in a manner fixed against relative rotation, but axially movable;    the outer ends of said U-shaped blocking plate dip into recesses of said closure element.    
   
   
       29 . The closure cap in accordance with  claim 16 , wherein: 
 said twist-prevention device is constituted by a rocker, one end of which is fastened to said closure element of said outer cap element, and one area of which facing away from a hinge rests under the action of a spring on an actuating rod.    
   
   
       30 . The closure cap in accordance with  claim 29 , wherein: 
 facing away from said hinge, said rocker has a finger, which can enter between radially inward pointing detent projections over the circumference of said grip element.