Head for dispensing a liquid product in the form of an aerosol and dispenser equipped with such a head

Abstract

The invention relates to a head for dispensing a liquid product in the form of an aerosol. The dispensing head includes a push-button, at least two ducts housed in the push-button and at least two nozzles provided in the push-button. At least part of each duct is radial, and another part of the duct communicates with the nozzle and is orientated parallel to an axis of the nozzle. The nozzles are arranged so that the sprays leaving each nozzle strike each other in order to provide a single and homogeneous spray. The invention also relates to a dispenser equipped with such a dispensing head.

What is claimed as new and desired to be secured by Letters Patent of the United States is:  
     
       1. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising: 
       a push-button having an axis;  
       at least two ducts in the push-button; and  
       at least two nozzles provided in the push-button, said nozzles having nozzle axes oriented so as to direct sprays leaving each nozzle in a plane substantially perpendicular to the axis of the push button;  
       wherein  
       at least part of each duct is radial and a further part of the duct communicates with the  a respective nozzle and is oriented parallel to a  the nozzle axis of the nozzle so that sprays leaving each nozzle strike each other to provide a single and homogeneous spray.  
     
     
       2. A dispensing head according to  claim 1 , wherein each duct comprises at least one axial part. 
     
     
       3. A dispensing head according to  claim 1 , wherein the product is dispensed is a single product. 
     
     
       4. A dispensing head according to  claim 1 , wherein the nozzle axis of each nozzle is oriented substantially transversely with respect to the axis of the push-button which is a longitudinal axis, the nozzle axes of the nozzles being situated in one and the same plane. 
     
     
       5. A dispensing head according to  claim 1 , wherein the nozzle axes of the nozzles form an angle ranging from 20° to 120° with each other. 
     
     
       6. A dispensing head according to  claim 2 , wherein the nozzle axis of each nozzle is separated from an axis of the axial part of the duct by a distance which is at least equal to a length of a pillar of the nozzle plus a width of the radial part of the duct. 
     
     
       7. A dispensing head according to  claim 1 , wherein the radial part of each duct is situated in a plane transverse to the longitudinal axis of the push-button. 
     
     
       8. A dispensing head according to  claim 2 , wherein the radial part of the duct connects the axial part to the further part of the duct communicating with the nozzle. 
     
     
       9. A dispensing head according to  claim 1 , wherein the duct further comprises a curved part. 
     
     
       10. A dispensing head according to  claim 2 , wherein the radial part of each duct comprises a first element defined in a same piece as that of the axial part of the duct and a second element carrying one of the nozzles and defined in another piece, the two elements being joined together by a linking means. 
     
     
       11. A dispensing head according to  claim 1 , wherein each nozzle is held by a post and a fastening bracket which are fixed to the push-button. 
     
     
       12. A dispensing head according to  claim 1 , wherein the radial part of each duct is perpendicular to the further part of the duct communicating with the nozzle. 
     
     
       13. A dispensing head according to  claim 1 , wherein the dispensing head includes two nozzles. 
     
     
       14. A dispensing head according to  claim 1 , wherein the nozzles are identical. 
     
     
       15. A dispenser according to  claim 1 , further comprising a pressurized container which contains the liquid product to be dispensed in the form of an aerosol; a valve for dispensing the product, the valve being equipped with a hollow valve-control stem including an inlet and an outlet; and a dispensing head equipped with the push-button which includes the at least two ducts, and the at least two nozzles. 
     
     
       16. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising: 
       a push-button member having a longitudinal axis extending therethrough;  
       at least two duct members located in the push-button member; and  
       at least two nozzle members extending from said at least two duct members, said nozzle members having nozzle axes oriented so as to direct sprays leaving each nozzle member in a plane substantially perpendicular to the axis of the push button;  
       wherein each of said at least two duct members comprises a radial first portion and a second portion which communicates with said  a respective nozzle member, the second portion of each duct member being oriented parallel to a  the nozzle axis of the corresponding nozzle member, such that sprays from each of said nozzles  nozzle members strike each other to provide for a single homogeneous spray.  
     
     
       17. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising: 
       a push-button having an axis including a cylindrical skirt;  
       at least two ducts in the push-button extending from inside said skirt to outside said skirt to outside said skirt; and  
       at least two nozzles provided in the push-button outside said skirt, said nozzles having nozzle axes oriented so as to direct sprays leaving each nozzle in a plane substantially perpendicular to the axis of the push button;  
       wherein:  
       at least part of each duct is radial and a further part of the duct communicates with the respective nozzle and is oriented parallel to a  the nozzle axis of the nozzle so that the sprays leaving each nozzle strike each other to provide a single and homogeneous spray.  
     
     
       18. The dispensing head of  claim 1 , further comprising a tongue extending laterally from said push button at a position diametrically opposite a region of intersection of said sprays. 
     
     
       19. The dispensing head of  claim 1 , wherein said ducts are not colinear. 
     
     
       20. The dispensing head of  claim 1 , wherein each of said nozzles is a swirl nozzle. 
     
     
       21. The dispensing head of  claim 16 , further comprising a tongue extending laterally from said push button at a position diametrically opposite a region of intersection of said sprays. 
     
     
       22. The dispensing head of  claim 16 , wherein said ducts are not colinear. 
     
     
       23. The dispensing head of  claim 16 , wherein each of said nozzles is a swirl nozzle. 
     
     
       24. The dispensing head of  claim 17 , further comprising a tongue extending laterally from said push button at a position diametrically opposite a region of intersection of said sprays. 
     
     
       25. The dispensing head of  claim 17 , wherein said ducts are not colinear. 
     
     
       26. The dispensing head of  claim 17 , wherein each of said nozzles is a swirl nozzle. 
     
     
       27. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising: 
         a push - button having an axis;    
         at least two ducts in the push - button; and    
         at least two nozzles provided in the push - button, said nozzles having nozzle axes oriented so as to direct sprays leaving each nozzle in a plane which does not contain the axis of the push button;    
       
         wherein at least part of each duct is radial and a further part of the duct communicates with a respective nozzle and is oriented parallel to the nozzle axis of the nozzle so that the sprays leaving each nozzle strike each other to provide a single and homogeneous spray. 
       
     
     
       28. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising: 
         a push - button member having a longitudinal axis extending therethrough;    
         at least two duct members located in the push - button member; and    
       
         at least two nozzle members extending from said at least two duct members, said nozzle members having nozzle axes oriented so as to direct sprays leaving each nozzle member in a plane which does not contain the axis of the push button;  
       
       
         wherein each of said at least two duct members comprises a radial first portion and a second portion which communicates with a respective nozzle member, the second portion of each duct member being oriented parallel to the nozzle axis of the corresponding nozzle member, such that the sprays from each of said nozzle members strike each other to provide for a single homogeneous spray. 
       
     
     
       29. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising: 
         a push - button having an axis including a cylindrical skirt;    
         at least two ducts in the push - button extending from inside said skirt; and    
         at least two nozzles provided in the push - button outside said skirt, said nozzles having nozzle axes oriented so as to direct sprays leaving each nozzle in a plane which does not contain the axis of the push button;    
       
         wherein at least part of each duct is radial and a further part of the duct communicates with the respective nozzle and is oriented parallel to the nozzle axis of the nozzle so that the sprays leaving each nozzle strike each other to provide a single and homogeneous spray. 
       
     
     
       30. A dispensing head for dispensing a liquid product in the form of an aerosol, the dispensing head comprising a push- button having an axis and at least two ducts, the push - button further comprising at least two nozzles in communication with a respective duct, said nozzles having nozzle axes oriented so as to direct sprays leaving each nozzle in a plane which does not contain the axis of the push button, said nozzles being oriented with respect to each other so that the sprays leaving each nozzle strike each other to provide a single and homogeneous spray.   
     
     
       31. A dispensing head according to  claim 27 , wherein each of said nozzles is a swirl nozzle.  
     
     
       32. A dispensing head according to  claim 28 , wherein each of said nozzle members is a swirl nozzle. 
     
     
       33. A dispensing head according to  claim 29 , wherein each of said nozzles is a swirl nozzle. 
     
     
       34. A dispensing head according to  claim 30 , wherein each of said nozzles is a swirl nozzle.