Patent Publication Number: US-6216965-B1

Title: Nozzle of water sprinkler

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to a water sprinkler, and more particularly to a nozzle of the water sprinkler. 
     2. Description of Related Art 
     As shown in FIG. 1, a prior art nozzle  10  of the sprinkler comprises a pipe  11  which is fastened at one end with a head  12 , and at another end to a grip  13 . The prior art nozzle  10  is defective in design because the pipe  11  cannot be adjusted in length, and because the head  12  is fixedly fastened to the pipe  11 . In other words, the prior art nozzle  10  has a fixed length, thereby making it costly to store or ship the prior art nozzle  10 . 
     BRIEF SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide a sprinkler with a nozzle which is free of the shortcomings of the prior art nozzle described above. 
     In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by an improved nozzle which comprises a head, an expandable pipe, and a grip. The head is rotatably fastened to one end of the expandable pipe, whereas the grip is fastened to the other end of the expandable pipe. 
     The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
     FIG. 1 shows a perspective view of a sprinkler nozzle of the prior art. 
     FIG. 2 shows a perspective view of a sprinkler nozzle of the preferred embodiment of the present invention. 
     FIG. 3 shows an exploded view of the preferred embodiment of the present invention. 
     FIG. 4 shows a sectional view of the preferred embodiment of the present invention. 
     FIG. 5 shows a schematic view of the adjustment of the head of the preferred embodiment of the present invention. 
     FIG. 6 shows a sectional schematic view of the position head of the preferred embodiment of the present invention. 
     FIG. 7 shows a sectional schematic view of the length adjustment of the preferred embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     As shown in FIGS. 2-7, a sprinkler nozzle of the preferred embodiment of the present invention comprises a grip  10 , an inner pipe  30 , a control member  40 , a pivoting member  50 , and a head  60 . 
     The grip  10  is fastened at one end to an outer pipe  21  which is provided at the free end with an opening  22 . The edge of the opening  22  is provided with a flange  211 . The flange  211  is provided with a tapered annular edge  212 . 
     The inner pipe  30  is received in the interior of the outer pipe  21  such that the top end of the inner pipe  30  juts out of the outer pipe  21  via the opening  22  of the outer pipe  21 . 
     The control member  40  is formed of a washer  41 , a tubular body  42 , and a threaded ring  43 . The washer  41  is disposed on the tapered annular edge  212 . The tubular body  42  is fitted over the top end of the outer pipe  21  and is provided at the top end with outer threads  421 . The threaded ring  43  is fitted over the inner pipe  30  such that the threaded ring  43  is engaged with the outer threads  421  of the tubular body  42 , and such that the threaded ring  43  exerts a pressure on the washer  41  so as to securely lock the inner pipe  30 . 
     The pivoting member  50  is formed of a connector  51 , a leakproof pad  52 , a locating pipe  53 , and a spherical connector  54 . The connector  51  is fastened to the inner pipe  30  and is provided with outer threads  511 . The leakproof pad  52  is provided with a center through hole  521  and an arcuate groove  522 . The leakproof pad  52  is located at the top of the connector  51 . The locating pipe  53  is provided with a center through hole  531  and inner threads  532 . The spherical connector  54  is provided in the center with a water inlet  541 , and at the top end with a threaded pipe  542  of an appropriate length. The spherical connector  54  is received in the locating pipe  53  such that the outer wall of the spherical connector  54  is in an intimate contact with the inner wall of the through hole  531  of the locating pipe  53 , and such that the threaded pipe  542  is juts out of the top end of the locating pipe  53 . In the meantime, the locating pipe  53  is engaged with the top end of the connector  51 . The spherical connector  54  is in intimate contact with the arcuate groove  522  of the leakproof pad  52 . 
     The head  60  is fastened to the threaded pipe  542  of the spherical connector  54 . The head  60  is rotatably fastened to the pivoting member  50  by means of the spherical connector  54 . As the threaded ring  43  of the control member  40  is unfastened, the inner pipe  30  is relieved of the pressure of the washer  41  and can be thus adjusted in length in conjunction with the outer pipe  21 . Upon having adjusted the length, the threaded ring  43  is once again fastened to the tubular body  42 , thereby causing the threaded ring  43  to press against the washer  41  which is forced into the tapered annular edge  212  of the outer pipe  21  to press against the outer wall of the inner pipe  30 . The inner pipe  30  is thus locked in position. 
     In view of the fact that the head  60 , the outer pipe  21 , and the inner pipe  30  of the present invention are adjustable, the sprinkler nozzle of the present invention can be economically packaged for storage or shipment.