Patent Publication Number: US-2009224073-A1

Title: Multi-purpose sprayer gun

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a multi-purpose sprayer gun, and more particularly to a multi-purpose sprayer gun including a simplified structure for reducing the manufacturing cost for the sprayer gun and for allowing the sprayer gun to be easily and quickly assembled. 
     2. Description of the Prior Art 
     Typical sprayer guns comprise a revolving ring rotatably attached to a main body, a water control rod slidably disposed in the main body and having a collar for engaging with the revolving ring and for controlling the outwardly water flowing pattern, and a press trigger handle pivotally attached to the main body and coupled to the water control rod to actuate the collar of the water control rod to engage with the revolving ring. 
     For example, U.S. Pat. No. 4,666,085 to Liaw discloses one of the typical multiple purpose water spray guns comprise a seal plate attached to a main body for covering the circular front of the main body, and two or more water seal rings engaged into a water supply pipe of the main body before a revolving ring is rotatably attached or coupled to the main body. 
     However, the seal plate and the water seal rings are required and should be attached or coupled to the main body such that the typical sprayer gun may not be easily and quickly assembled and such that the manufacturing cost for the typical sprayer gun may not be reduced. 
     U.S. Pat. No. 5,598,978 to Wang discloses another typical garden sprinkler head comprising a water distributor plate integrally secured to the inner side of a top discharge cover by such as ultrasonic welding processes before the top discharge cover is rotatably attached or coupled to the nozzle head of a lever controlled nozzle. 
     However, the water distributor plate is required and should be attached or coupled to the top discharge cover such that the typical sprayer gun may not be easily and quickly assembled and such that the manufacturing cost for the typical sprayer gun also may not be reduced. 
     U.S. Pat. No. 6,719,219 to Wang discloses a further typical sprayer nozzle having multiple spray pattern and comprising a front casing welded or secured to a front housing of the spray gun body, a rotor rotatably attached or coupled to the front housing with a pivotal stud and having a number of passages of different patterns formed in the rotor, and a control ferrule rotatably attached or coupled to the front housing and meshed or engaged with the rotor for rotating the rotor relative to the front housing and for controlling the outwardly water flowing patterns. 
     However, the rotor and the control ferrule may complicate the structure of the typical sprayer nozzle and should be attached or coupled to the front housing and the front casing such that the typical sprayer gun may not be easily and quickly assembled and such that the manufacturing cost for the typical sprayer gun also may not be reduced. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional multi-purpose sprayer guns. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide a multi-purpose sprayer gun including a simplified structure for reducing the manufacturing cost for the sprayer gun and for allowing the sprayer gun to be easily and quickly assembled or manufactured. 
     In accordance with one aspect of the invention, there is provided a sprayer gun comprising a sprayer gun body including a handle for being grasped by a user, and including a passage formed in the handle, and including a housing provided on top of the handle and having a conduit formed in the housing and communicating with the passage of the handle for receiving the water from the passage of the handle, a revolving ring rotatably attached to a front portion of the housing and including a plurality of openings formed in the revolving ring for changeably aligning with the conduit of the housing by rotating the revolving ring relative to the housing, a sealing ring engaged in the conduit of the housing for engaging with the revolving ring and for making a water tight seal between the housing and the revolving ring, the sealing ring including a bore formed therein for selectively aligning with either of the openings of the revolving ring, an actuating rod slidably disposed in the conduit of the housing and including a sealing block disposed on the actuating rod and secured to the housing for making a water tight seal between the housing and the actuating rod and for guiding the water to flow from the passage of the handle to a front portion of the conduit of the housing, and a trigger pivotally attached to the housing with a pivot shaft and coupled to the actuating rod for moving the actuating rod relative to the conduit of the housing and for moving the actuating rod toward or away from the revolving ring, and the actuating rod includes a plug provided on a front portion of the actuating rod for selectively engaging into the bore of the sealing ring and for sealingly engaging with the sealing ring and for effectively controlling the water to flow out through the bore of the sealing ring and to flow out through either of the openings of the revolving ring, the sprayer gun includes a simplified structure for reducing the manufacturing cost and for allowing the sprayer gun to be easily and quickly assembled or manufactured. 
     The actuating rod includes a water guide head provided on the front portion of the actuating rod for engaging with the sealing ring, and the plug is extended outwardly and forwardly from the water guide head for selectively engaging into the bore of the sealing ring and for effectively controlling the water to flow out through the bore of the sealing ring. 
     The actuating rod includes an outer thread formed on a rear portion of the actuating rod for engaging with a lock nut which is engaged with the trigger for coupling the actuating rod to the trigger and for allowing the actuating rod to be actuated or moved by the trigger. 
     Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a multi-purpose sprayer gun in accordance with the present invention; 
         FIG. 2  is a side plan schematic view of the multi-purpose sprayer gun, in which a portion of the multi-purpose sprayer gun has been cut off for showing an inner structure of the multi-purpose sprayer gun; and 
         FIG. 3  is a side plan schematic view similar to  FIG. 2  illustrating the operation of the multi-purpose sprayer gun. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to the drawings, and initially to  FIGS. 1 and 2 , a multi-purpose sprayer gun  1  in accordance with the present invention comprises a sprayer gun body  10  including a handle  11  for being grasped or held by the users, and including a passage  12  formed in the handle  11  for coupling to a water reservoir (not shown), and including a housing  13  formed or provided on top of the handle  11  and having a conduit  14  formed in the housing  13  and communicating with the passage  12  of the handle  11  for receiving the water from the passage  12  of the handle  11  and for allowing the water to selectively flow out through the conduit  14  of the housing  13 . 
     A revolving ring  20  is rotatably attached to the front portion of the housing  13  and includes a number of orifices or openings  21  of different patterns formed in the revolving ring  20  and arranged circularly or in a circle for selectively or changeably aligning with the conduit  14  of the housing  13  ( FIGS. 2 ,  3 ) and for allowing the water to selectively flow out through either of the openings  21  of the revolving ring  20  by rotating the revolving ring  20  relative to the housing  13 . A gasket or sealing ring  22  is disposed or engaged in the front portion  15  of the conduit  14  of the housing  13  for engaging with the revolving ring  20  and for making a water tight seal between the housing  13  and the revolving ring  20 . The sealing ring  22  includes an orifice or bore  23  formed therein for selectively or changeably aligning with either of the openings  21  of the revolving ring  20 . 
     A control means or device  30  includes an actuating rod  31  slidably disposed in the conduit  14  of the housing  13 , and includes a gasket or sealing block  32  disposed on the actuating rod  31  and engaged or secured in the rear portion  16  of the conduit  14  of the housing  13  for making a water tight seal between the housing  13  and the actuating rod  31  and for preventing the water to flow through the rear portion  16  of the conduit  14  of the housing  13  and for guiding the water to flow from the passage  12  of the handle  11  and to flow out through the front portion  15  of the conduit  14  of the housing  13 , and includes an outer thread  33  formed or provided on the rear or one end portion of the actuating rod  31  for threading or engaging with a lock nut  34 . 
     A hand grip or trigger  18  is rotatably or pivotally attached to the rear portion of the housing  13  with such as a pivot shaft  19 , and the rear portion of the actuating rod  31  is engaged through the trigger  18  and engaged with or coupled to the trigger  18  with the lock nut  34  for allowing the actuating rod  31  to be actuated or moved along or relative to the conduit  14  of the housing  13  with the trigger  18  and for allowing the actuating rod  31  to be moved toward or away from the revolving ring  20  and/or the sealing ring  22 . The above-described structure is typical and will not be described in further details. 
     The actuating rod  31  further includes a water guide head  35  formed or provided on the front or other end portion of the actuating rod  31  for selectively engaging with the revolving ring  20  and/or the sealing ring  22 , and further includes a plug  36  extended outwardly therefrom, such as extended outwardly and forwardly from the water guide head  35  for selectively engaging into the bore  23  of the sealing ring  22  and for sealingly engaging with the sealing ring  22  and thus for effectively controlling the water to selectively flow out through the bore  23  of the sealing ring  22  and then to selectively or changeably flow out through either of the openings  21  of the revolving ring  20 . A spring member  37  may be engaged onto the actuating rod  31  and engaged between the sealing block  32  and the water guide head  35  for selectively biasing or forcing the water guide head  35  and the plug  36  toward the sealing ring  22  after the actuating rod  31  has been moved rearwardly relative to the housing and when the trigger  18  is released by the user. 
     It is to be noted that it is only required to form and provide a plug  36  from the water guide head  35  for selectively engaging into the bore  23  of the sealing ring  22  and for sealingly engaging with the sealing ring  22  and thus for effectively controlling the water to selectively flow out through the bore  23  of the sealing ring  22  and then to selectively or changeably flow out through either of the openings  21  of the revolving ring  20 , such that the multi-purpose sprayer gun  1  in accordance with the present invention may include a greatly simplified structure for reducing the manufacturing cost for the sprayer gun  1  and for allowing the sprayer gun  1  to be easily and quickly assembled. 
     Accordingly, the multi-purpose sprayer gun in accordance with the present invention includes a simplified structure for reducing the manufacturing cost for the sprayer gun and for allowing the sprayer gun to be easily and quickly assembled. 
     Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.