Patent Publication Number: US-6341736-B1

Title: Air brush type sprayer

Description:
FIELD OF THE INVENTION 
     The present invention relates to an air brush type sprayer that has a nozzle assembly snapped to a can. A liquid outlet member is threadedly connected to a top of the can. 
     BACKGROUND OF THE INVENTION 
     A conventional air brush type sprayer for spraying colored paint, stains, lacquers and the like is shown in FIG.  5  and generally includes a can  30  for receiving liquid material therein and a cap  31  threadedly connected to a top of the can  30 . The cap  31  has a threaded protrusion and a passage  311  is defined therethrough for a tube  32  extending through the passage  311  to allow a tip portion to extend from the threaded protrusion. A nozzle assembly  33  having a connection part  331  connected to the threaded protrusion and includes a nozzle  332  which is located beside the tip of the tube  32 . A valve  333  is received in the nozzle  332  and can be operated by a lever  334  which is integrally connected to the nozzle assembly  33 . The nozzle assembly  33  is connected to a compressor so as to blow pressurized air flow from the nozzle  332  to suck the liquid material in the can  30 . When adjusting the gap between the nozzle  332  and the tip, the can  30  and the nozzle assembly  33  are both rotated in opposite direction to let the connection part  331  be moved upward relative to the threaded protrusion as shown in FIG.  6 . The other way is to rotate the can  30  as shown in FIG.  7 . However, both of the two ways could disengage the can  30  and the nozzle assembly  33 . Because both of the two items are heavy so that the adjusting is inconvenient for the users. Besides, the lever  334  is integral with the nozzle assembly  33  so that once the lever  334  is broken, the whole nozzle assembly  33  has to be discarded. 
     SUMMARY OF THE INVENTION 
     In accordance with one aspect of the present invention, there is provided an air brush type sprayer and comprises a can with a cap mounted thereto and a base extends from the cap. A liquid outlet member is threadedly connected to a top of the base. A nozzle assembly has a valve received therein which is operated by a lever connected to the nozzle assembly. A nozzle and a connection part extend from the nozzle assembly. The connection part is connected to the base. 
     The primary object of the present invention is to provide an air brush type sprayer wherein the nozzle assembly is snapped on the can and the liquid outlet member is threadedly connected to a top of the can. 
     These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view to show the an air brush type sprayer of the present invention; 
     FIG. 2 is an exploded view to show the nozzle assembly and the can of the air brush type sprayer of the present invention; 
     FIG. 3 is a side view to show the air brush type sprayer of the present invention; 
     FIG. 4 is a cross sectional view to show the air brush type sprayer of the present invention; 
     FIG. 5 is a cross sectional view to show a conventional air brush type sprayer; 
     FIG. 6 is a cross sectional view to show the conventional nozzle assembly is rotated upward to obtain a larger gap between the tip and the nozzle of the conventional air brush type sprayer, and 
     FIG. 7 is a cross sectional view to show the can is rotated downward to adjust the gap between the tip and the nozzle of the conventional air brush type sprayer. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to FIGS. 1 to  4 , the air brush type sprayer of the present invention comprises a can  20  with a cap  21  mounted to a top of the can  20  and a base  24  extends from the cap  21 . A threaded tube  244  extends from the base  24  and a tube  23  communicating with an interior of the can  20  is engaged with the threaded tube  244 . The liquid outlet member  22  is threadedly connected to the threaded tube  244 . A guide member  243  extends from the base  24  and two holes  241  are respectively defined in the base  24  and separated by the guide member  243 . Two apertures  242  are defined in two sides of the base  24  and communicate with the two holes  241 . 
     A nozzle assembly  10  has a valve  100  received therein and a rod  101  of the valve  100  extends from the nozzle assembly  10 . A lever  11  is pivotally connected to the nozzle assembly  10  by a pin  110  and located above the rod  101 . A fitting  12  is connected to a lower end of the valve  100  so as to be connected to a compressor (not shown). A nozzle  13  and a connection part  14  both extend from the nozzle assembly  10 . The connection part  14  has two pawls  141  extending therefrom and a groove  142  is defined in the connection part  14 . The two pawls  141  are engaged with the two holes  241  in the base  24  and the guide member  243  is received in the groove  142 . The engagement of the guide member  243  and the groove  142  prevents the nozzle assembly  10  from rotating relative to the can  20 . The two pawls  141  are easily snapped to the base  24  when assembling the two items. 
     The gap between a tip of the liquid outlet member  22  and the nozzle  13  is simply to rotate the liquid outlet member  22 . This is convenient for the user because the liquid outlet member  22  is light in weight. 
     While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope and spirit of the present invention.