Patent Publication Number: US-8109685-B1

Title: Liquid dispenser with interchangeable head and remote operating mechanism

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims priority of incorporates by reference U.S. patent application Ser. No. 12/229,731 filed on Aug. 26, 2008. 
    
    
     BACKGROUND OF INVENTION 
     a. Field of Invention 
     The invention relates generally to devices for remotely applying a liquid to a surface utilizing a dispenser with a dispenser head at the distal end. The dispenser device has an elongated handle and liquid is delivered to the dispenser head utilizing a remote operating mechanism to activate pump. 
     b. Description of Related Art 
     The following patents are representative of the field pertaining to the present invention: 
     U.S. Pat. No. 6,692,171 B2 to Vito et al. describes a squeegee with squeegee handle and remote spraying device, includes a squeegee section having an enclosed container for holding liquid, a sprayer head, which is in connection with the squeegee section, and a surface extending in a lengthwise direction. The enclosed container has a threaded neck. The sprayer head has a threaded cap adapted for engaging the threaded neck, as well as a dispensing means for dispensing the liquid. The dispensing means includes a trigger being in connection with a conduit, a nozzle at an end of the sprayer head, and pressure inducing means for inducing a pressure change in the conduit so as to draw spraying agent into the conduit and out of the nozzle. The conduit extends through the threaded cap and into the enclosed container. There is also a squeegee blade attached to the sprayer head and being nearly perpendicular to the surface of said enclosed container. In preferred embodiments, an extended handle further includes a plurality of sections in which each section extends to allow for longer reaching range. 
     U.S. Pat. No. 6,547,469 B2 to Vito describes a spray squeegee having automatic recipient surface wetting mechanism with extension and remote triggering system, which includes a squeegee section having an enclosed container for holding liquid, a sprayer head, which is in connection with the squeegee section, and a surface extending in a lengthwise direction. The enclosed container has a threaded neck. The sprayer head has a threaded cap adapted for engaging the threaded neck, as well as dispensing means for dispensing the liquid. There is a squeegee blade and at least one wiping mechanism. One wiping means includes a wiping support that a plurality of nozzles for wetting the wiping mechanism and is located on a side opposite the blade. Another wiping means, which may be on the blade side or the first wiping mechanism side, is it tillable and includes a clamp for holding a wiping material. 
     U.S. Pat. No. 6,010,267 to Vito describes an extended squeegee and fluid delivery system for cleaning in places that are of high elevation. A squeegee is used in connection with an extended handle. The spray system has a pump that delivers a cleaning agent through a conduit in connection with the squeegee. There is a trigger in connection with the spray bottle and near the end of the handle where the user is holding the handle. The user may then deliver cleaning agent out the nozzle by squeezing on a trigger or pull cord in connection with the handle. The handle of the squeegee may be made hollow in order to deliver the cleaning agent from the source of the agent to the nozzle in connection with the squeegee. 
     U.S. Pat. No. 5,364,198 to Skenderi describes a self contained window cleaning implement, the window cleaning implement including an elongated handle member, a squeegee member located on one end of the elongated handle member, a spray nozzle for dispensing a spray, the spray nozzle being located on the one end of the elongated handle member adjacent the squeegee member, the squeegee member extending at an oblique angle outward and downward from the elongated handle member, and the spray apparatus being located above the squeegee member, a reservoir for holding a supply of cleaning fluid, the reservoir being attached to the other end of the elongated handle member opposite the one end of the handle member, a tube extending from the reservoir to the spray nozzle for transferring the cleaning fluid from the reservoir to the spray nozzle, and a manually actuable pump apparatus for forcing the cleaning fluid from the reservoir, through the tube, and to the spray nozzle, the manually actuable pump apparatus being located on the other end of the elongated handle member, and the manually actuable pump apparatus including a digitally depressible trigger member. 
     U.S. Pat. No. 5,186,392 to Pleshek describes an improvement in an extendable elongate liquid-applying device of the type used for cleaning interior walls and ceilings. The improvement includes first and second tubular members telescoped together and slideable relative to one another to extend and retract the device. One of the members has a proximal end; the other has a distal end and an attached angularly-oriented nozzle. A continuous length of coiled flexible hose extends within the members and connects to the nozzle member. That is, the hose extends unbroken along the lengths of the members, from the proximal end to the distal end, to provide discharge from the nozzle member regardless of the relative positions of the members. A separate base member plugs into the proximal end and has a valve for controlling liquid flow. With a nozzle attached thereto, the base member can be used alone for “close in” cleaning. 
     U.S. Pat. No. 4,776,716 to Huang describes a foldable multipurpose cleaning device that comprises a fluid-receiving receptacle member detachably connected to a cleaning head assembly. The receptacle member includes a plunger and dispensing means for the fluid. The cleaning head assembly includes an elongated scraper or squeegee and an elongated brush or sponge borne on a carriage member, an intermediate coupling member projecting from the carriage member and comprising a female housing member with a locking notch in its base, a slotted body member topped with a male head portion that has near its base a lug that is engagable with the notch on the female housing member in a releasable gripping relationship when the carriage member is in a generally horizontal position for operation, the female housing member being pivotally attached to the male head portion by means of oppositely-disposed pivot pin elements projecting from the male head portion into corresponding pivot slots in the female housing member for slip joint action therebetween. 
     U.S. Pat. No. 1,783,506 to T. C. Homiller describes in a cleaning device of the described, an apertured delivering and distributing head, and a hollow elongated handle carried by said head, said handle being a water container communicating with said head having a force feed means including an air passage incorporated in its lower end to eject the water, a regulating valve in said head, and an operating lever on said handle and an operating connection between said lever and valve. 
     U.S. Pat. No. 622,809 to C. R. Keyser describes the combination of the handle, the metallic ball or sphere mounted on the top thereof, the tank above and communicating “therewith, the spout projecting from the tank into the metallic ball, the rubber ball within the metallic ball, embracing the spout, the discharge-tube passing through the tank and spout into the rubber ball, and the pivoted crossed levers, bearing upon the sides of the rubber ball, substantially as described. 
     Notwithstanding the prior art, the present invention is neither taught nor rendered obvious thereby. 
     SUMMARY OF INVENTION 
     A present invention liquid dispenser with an interchangeable head and remote operating mechanism includes: a) an elongated handle member having a proximal end for a user to hold and an opposing distal end, the distal end including a storage compartment; b) a liquid reservoir contained within the storage compartment; c) fluid conduit connected at a first end to the liquid reservoir and connected at a second end to a universal head connector; d) the universal head connector located at second end of the fluid conduit and having external exposure at distal end for connection to at least one interchangeable head; e) a pump located in the storage compartment and functionally connected to the fluid conduit; f) remote control means located near the proximal end of the handle member for turning the pump on and off and for operating the pump in a first direction to pump liquid into the liquid supply container and in a second direction for subsequently pumping out of the liquid supply container; and, g) at least one interchangeable head connectable to the universal head connector, selected from the group consisting of a liquid dispensing brush, a liquid dispensing squeegee, a liquid dispensing mop, a paint dispensing head, and combinations thereof. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the elongated handle member is a telescopic handle member. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the storage compartment further includes a reversible electric motor connected to the pump. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the remote control means is connected by wire connection to the electric motor. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the remote control means is connected by wireless connection to the electric motor. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the electric motor is a battery operated electric motor and the storage compartment includes battery holding means and connection means to at least one of the electric motor, and the remote control means. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the at least one interchangeable head is a liquid dispensing mop with a pad. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the at least one interchangeable head is a paint dispensing head selected from the group consisting of a paint dispensing pad, a paint dispensing brush and a paint dispensing roller. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the at least one interchangeable head is a head with a squeegee. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism, the remote control means includes at least one forward pumping control button to dispense liquid from the liquid reservoir and at least one reverse pumping control button to feed liquid into the liquid reservoir. 
     In another embodiment of the present invention, a liquid dispenser with an interchangeable head and remote operating mechanism which includes: a) an elongated handle member having a proximal end for a user to hold and an opposing distal end, the distal end included a storage compartment; b) a liquid reservoir contained within the storage compartment; c) fluid conduit connected at a first end to the liquid reservoir and connected at a second end to a universal head connector; d) a side inlet member located within the storage compartment and connected at one end to one of the fluid conduit and the liquid reservoir and at an opposite end to an external area of the storage compartment, the side inlet member having a one way valve to permit liquid to flow into the reservoir and to prevent liquid from flowing out of the side inlet member to provide a fill inlet separate from the universal head connector; and, e) the universal head connector located at second end of the fluid conduit and having external exposure at distal end for connection to at least one interchangeable head; f) a pump located in the storage compartment and functionally connected to the fluid conduit; g) remote control means located near the proximal end of the handle member for turning the pump on and off and for operating the pump in a first direction to pump liquid into the liquid supply container and in a second direction for subsequently pumping out of the liquid supply container; and, h) at least one interchangeable head connectable to the universal head connector, selected from the group consisting of a liquid dispensing brush, a liquid dispensing squeegee, a liquid dispensing mop, a paint dispensing head and combinations thereof. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the elongated handle member is a telescopic handle member. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, storage compartment further includes a reversible electric motor connected to the pump. Or, alternately, a second pump operatively coupled is used to pump an a reverse direction. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the remote control means is connected by wire connection to the electric motor. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the remote control means is connected by wireless connection to the electric motor. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the electric motor is a battery operated electric motor and the storage compartment includes battery holding means and connection means to at least one of the electric motor, and the remote control means. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the at least one interchangeable head is a liquid dispensing mop with a pad. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the at least one interchangeable head is a paint dispensing head selected from the group consisting of a paint dispensing pad, a paint dispensing brush and a paint dispensing roller. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the at least one interchangeable head is a head with a squeegee. 
     In some preferred embodiments of the present invention liquid dispenser with interchangeable head and remote operating mechanism described by the paragraph above, the remote control means includes at least one forward pumping control button to dispense liquid from the liquid reservoir and at least one reverse pumping control button to feed liquid into the liquid reservoir. As discussed herein, the pump may include any pump capable of delivering fluid, preferably the pump is a positive displacement pump capable of bi-directional pumping. Examples include rotary lobe pump, progressing cavity pump, rotary gear pump, piston pump, plunger pump, diaphragm pump, screw pump, gear pump, vane pump, regenerative (peripheral) pump, and, preferably, a peristaltic pump. As discussed herein, the liquid reservoir may include any containment capable of holding a fluid and allowing the fluid to be delivered to the interchangeable head via the pump. Examples include a rigid container with a valve, a semi rigid container, a collapsible container, a bag, a collapsible bag, a bladder, or anything of the like. As discussed herein, the fluid conduit is any object for allowing fluid to flow from the liquid reservoir to the pump, to the head. Examples include fluid couplers, snap on fluid couplers, plastic tube, rigid tubes, and, preferably, flexible tubing if used with a peristaltic pump. 
     Additional features, advantages, and embodiments of the invention may be set forth or apparent from consideration of the following detailed description, drawings, and claims. Moreover, it is to be understood that both the foregoing summary of the invention and the following detailed description are exemplary and intended to provide further explanation without limiting the scope of the invention as claimed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the invention and together with the detailed description serve to explain the principles of the invention. In the drawings: 
         FIG. 1  is a back partially cut view of an embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism; 
         FIGS. 2A and 2B  are a schematic diagram of an embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism; 
         FIGS. 3A and 3B  are a schematic diagram of another embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism; 
         FIG. 4  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable squeegee head unit; 
         FIG. 5  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable paint roller head unit; 
         FIG. 6  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable mop pad head unit; 
         FIG. 7  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable paint pad head unit; 
         FIG. 8  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable brush head unit; 
         FIG. 9  is a front view of another embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism, illustrating a segmented handle member; 
         FIG. 10  is a front view of a universal stopper unit for fitting into different diameter containers; and, 
         FIG. 11  is a front view of a camelback bag unit for transferring liquid of a present invention liquid dispenser with interchangeable head and operating mechanism, wherein the camelback bag unit is a collapsible liquid reservoir. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The invention relates generally to invention liquid dispenser with interchangeable head and operating mechanism for remotely applying a liquid to a surface utilizing a dispenser with a dispenser head at the distal end. The dispenser device has an elongated handle and liquid is delivered to the dispenser head utilizing a remote operating mechanism to activate pump. 
     The dispensing head may be a mop pad head, a liquid dispensing unit, a liquid dispensing squeegee, a liquid dispensing mop unit, a paint roller unit, a paint pad unit, a brush unit, or combinations thereof. The dispensing head includes a liquid dispensing manifold. 
     The device includes an elongated handle in which the handle may be one piece, telescoping, or separate sections that are removable. When there are separate removable sections, the sections have a male connection at a top end and a female connection at a bottom end of each section. 
     The pumping mechanism operates under at least one pump which is under processor control. There is a mechanism for activating the pump including on/off, forward liquid movement into the dispensing head and reverse liquid movement into the liquid reservoir. A transmitter and receiver control movement of the pump motor. 
     Referring now in detail to the drawings wherein like reference numerals designate corresponding parts throughout the several views, various embodiments of the present invention are shown.  FIG. 1  is a back partially cut view of an embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism  1 . 
     The liquid dispenser with an interchangeable head and remote operating mechanism  1  includes an elongated handle member  3 , a liquid reservoir  11 , fluid conduit  15 , a universal head connector  13 , a pump  21 , at least one remote control means  45 , 47  and at least one interchangeable head  37 , in this case a mop head. The elongated handle member  3  has a proximal end  5  with a handle  43  for a user to hold, and an opposing distal end  7 . The distal end  7  includes a storage compartment  9 . 
     The elongated handle member  3  may be a telescopic handle member, separate sections, or one piece. The elongated handle member  3  may be six inches to one foot, but is preferably at least three feet. However, it may be eight or ten feet. The liquid reservoir  11  is contained within the storage compartment  9 . 
     The fluid conduit  15  is connected at a first end  17  to the liquid reservoir  11  and connected at a second end  19  to a universal head connector  13 . The universal head connector  13  is located at the second end  19  of the fluid conduit  15  and has external exposure at the distal end for connection to at least one interchangeable head  37 . The at least one interchangeable head  37  is connectable to the universal head connector  13 . In this case the interchangeable head is a mop pad head, but it may be a liquid dispensing unit, a liquid dispensing squeegee, a liquid dispensing mop unit, a paint roller unit, a paint pad unit, a brush unit, or combinations thereof. The mop pad head includes a liquid dispensing manifold  41  and a rigid head tube  35  connected to the mop head member at one end and connected to the universal head connector at the other end. The connections are made through threading. The mop rigid head tube  35  includes a fluid conduit inside the rigid head tube. The liquid dispensing manifold  41  includes at least one aperture for dispensing the liquid. 
     The pump  21  is located in the storage compartment  9  and is functionally connected to the fluid conduit  15 . The pump  21  includes a motor, power source and controller, collectively shown as unit  23 . In addition, a remote control wireless receiver  25  is functionally connected to the motor, power source and controller, collectively shown as unit  23 . The motor may be a battery operated electric motor, in which case, the storage compartment includes battery holding means and connection means to at least one of the electric motor  23 , and the remote control means  45 ,  47 . The remote control means  45 ,  47  may be connected by wire connection or by wireless connection to the electric motor  23  through a motor, power source transmitter and power source, collectively shown as unit  49 . 
     The remote control means  45 , 47  is located near the proximal end  5  of the elongated handle member  3 . Remote control means  45  is a directional switch for forward and reverse pumping for operating the pump in a first direction to pump liquid into the liquid reservoir  11  and in a second direction for subsequently pumping out of the liquid reservoir  11 . 
     There are optional manual overrides for a forward pump button  27 , a reverse pump button  29 , and an on/off button  31 . When the elongated handle member  3  is eight feet long, for example, it would be easier to use the manual override buttons. 
     There is an inlet valve  50  including a one-way valve for refilling the liquid reservoir  11 . The inlet valve  50  extends into the fluid conduit  15  which exits into the liquid reservoir  11 . The inlet valve  50  is located within the storage compartment  9  and is connected at one end to one of the fluid conduit  15  and the liquid reservoir  11 . The inlet valve  50  is connected at an opposite end to an external area of the storage compartment  9 . Furthermore, the inlet one-way valve permits liquid to flow into the reservoir  11  and prevents liquid from flowing out of the inlet valve  50  to provide a fill inlet separate from the universal head connector  13 . 
     In operation, the liquid reservoir  11  is first filled with liquid and the handle member is extended or shortened, if it is not a single segment. The power button  47  is turned on and the directional switch  45  for dispensing is held down to remotely operate the pump in a forward direction. Forward pumping out of the liquid reservoir is selected. The transmitter  49  sends signals to the remote control wireless receiver  25  to operate the pump  21  via unit  23 . The pump  21  pumps liquid out of the liquid reservoir  11  through the fluid conduit  15  which flows into the fluid conduit  39  and out through the liquid dispensing manifold  41 . The liquid being dispensed may be a cleaner, water, paint or any other liquid and mop pad head  37  could be any of the appropriate interchangeable heads described above and below. 
     When a user needs to stop the flow of liquid out of the liquid reservoir, the power button  47  is moved to off. Through the transmitter and the receiver, the flow of the liquid is stopped. When a user needs to move liquid into the liquid reservoir  11 , the directional switch (not shown because it is behind forward directional switch  45  show in the Figure) is pressed to reverse flow of liquid into the liquid reservoir  11 . Of course, the optional manual override buttons may also be employed to perform the operational functions. 
     There are many ways for filling the liquid reservoir  11 . A hose and gravity feed may be employed by using inlet valve  50 . Other means for filling the liquid reservoir include the use of an external pump, prefilled liquid resevoirs that are inserted through an opening in the storage compartment having fastening means, inserting a universal stopper into the liquid reservoir connected to a liquid source and activating reverse flow of liquid, filling a camelback bag unit or any other means for moving liquid from one source to another or collecting liquid in a liquid reservoir. 
       FIGS. 2A and 2B  are a schematic diagram of an embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism. A liquid dispenser with an interchangeable head and remote operating mechanism  51  includes an elongated handle member  53 , a liquid reservoir  55 , fluid conduit  57 , a universal head connector  59 , a pump  61 , at least one remote control means  63  and at least one interchangeable head  65 . With reference to box  53 , the elongated handle member has a proximal end for a user to hold and an opposing distal end. The distal end includes a storage compartment. The elongated handle member may be a telescopic handle member. With reference to box  55 , the liquid reservoir is contained within the storage compartment. With reference to box  57 , the fluid conduit is connected at a first end to the liquid reservoir and connected at a second end to a universal head connector. With reference to box  59 , the universal head connector is located at the second end of the fluid conduit and has external exposure at distal end for connection to at least one interchangeable head. With reference to box  61 , the pump is located in the storage compartment and is functionally connected to the fluid conduit. 
     With reference to box  63 , the remote control means is located near the proximal end of the handle member for turning the pump on and off. Furthermore, the remote control means is and for operating the pump in a first direction to pump liquid into the liquid supply container and in a second direction for subsequently pumping out of the liquid supply container. 
     With reference to box  65 , the at least one interchangeable head is connectable to the universal head connector. It may be a liquid dispensing brush, a liquid dispensing squeegee, a liquid dispensing mop, a paint dispensing head, or combinations thereof. 
     The liquid dispenser with interchangeable head and remote operating mechanism with reference to box  67 , the storage compartment further includes a reversible electric motor connected to the pump. The electric motor may be a battery operated electric motor, in which case, the storage compartment includes battery holding means and connection means to at least one of the electric motor, and the remote control means. Referring again to box  63 , the remote control means may be connected by wire connection or by wireless connection to the electric motor. 
     With reference to box  69 , the at least one interchangeable head may be a liquid dispensing mop with a pad. Alternatively, the at least one interchangeable head may be a paint dispensing head selected from a paint dispensing pad, a paint dispensing brush and a paint dispensing roller. Furthermore, the at least one interchangeable head may be a head with a squeegee. 
     With reference to box  71 , the remote control means may include at least one forward pumping control button to dispense liquid from the liquid reservoir and at least one reverse pumping control button to feed liquid into the liquid reservoir. 
       FIGS. 3A and 3B  are a schematic diagram of another embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism; 
     A liquid dispenser with an interchangeable head and remote operating mechanism  81  includes an elongated handle member  83 , a liquid reservoir  85 , fluid conduit  87 , a side inlet member  89 , a universal head connector  93 , a pump  91 , at least one remote control means  95  and at least one interchangeable head  97 . With reference to box  83 , the elongated handle member has a proximal end for a user to hold and an opposing distal end. The distal end includes a storage compartment. The elongated handle member may be a telescopic handle member. With reference to box  85 , the liquid reservoir is contained within the storage compartment. With reference to box  87 , the fluid conduit is connected at a first end to the liquid reservoir and connected at a second end to a universal head connector. With reference to box  93 , the universal head connector is located at the second end of the fluid conduit and has external exposure at distal end for connection to at least one interchangeable head. With reference to box  91 , the pump is located in the storage compartment and is functionally connected to the fluid conduit. 
     With reference to box  89 , the side inlet member is located within the storage compartment and connected at one end to one of the fluid conduit and the liquid reservoir. The side inlet member is connected at an opposite end to an external area of the storage compartment. Furthermore, the side inlet member has a one-way valve to permit liquid to flow into the reservoir and to prevent liquid from flowing out of the side inlet member to provide a fill inlet separate from the universal head connector. 
     With reference to box  95 , the remote control means is located near the proximal end of the handle member for turning the pump on and off. Furthermore, the remote control means is and for operating the pump in a first direction to pump liquid into the liquid supply container and in a second direction for subsequently pumping out of the liquid supply container. As discussed herein, this is accomplished using a bi-directional pump, one or more additional pumps, or appropriate actuation of valves connected to the fluid conduit. 
     With reference to box  97 , the at least one interchangeable head is connectable to the universal head connector. It may be a liquid dispensing brush, a liquid dispensing squeegee, a liquid dispensing mop, a paint dispensing head, or combinations thereof. 
     With reference to box  99 , the storage compartment further includes a reversible electric motor connected to the pump. The electric motor may be a battery operated electric motor, in which case, the storage compartment includes battery holding means and connection means to at least one of the electric motor, and the remote control means. Alternately, a bi-directional pump, one or more additional pumps, or appropriate actuation of valves connected to the fluid conduit are used to achieve reverse flow. Referring again to box  95 , the remote control means may be connected by wire connection or by wireless connection to the electric motor. 
     With reference to box  101 , the at least one interchangeable head may be a liquid dispensing mop with a pad. Alternatively, the at least one interchangeable head may be a paint dispensing head selected from a paint dispensing pad, a paint dispensing brush and a paint dispensing roller. Furthermore, the at least one interchangeable head may be a head with a squeegee. 
     With reference to box  103 , the remote control means may include at least one forward pumping control button to dispense liquid from the liquid reservoir and at least one reverse pumping control button to feed liquid into the liquid reservoir. 
       FIG. 4  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable squeegee head unit  110 . The interchangeable squeegee head unit  110  includes a rigid head tube  111  with hosing inside with a threaded end  113  for connection to a universal head connector. In addition, there is a spray manifold housing and squeegee support, collectively shown as unit  115 , at least one spray manifold port  117 , and a squeegee  119 . 
       FIG. 5  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable paint roller head unit  120 . The interchangeable paint roller head unit  120  includes a rigid head tube  121  with hosing inside with a threaded end  123  for connection to a universal head connector. In addition, there is a roller support  125 , a roller with at least one paint release port  127 , and a paint feed line  129 . 
       FIG. 6  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable mop pad head unit  130 . The interchangeable mop pad head unit  130  includes a rigid head tube  131  with hosing inside with a threaded end  133  for connection to a universal head connector. In addition, there is a mop pad support  135 , a mop pad  137 , and a spray nozzle  139 . 
       FIG. 7  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable paint pad head unit  140 . The interchangeable paint pad head unit  140  includes a rigid head tube  141  with hosing inside with a threaded end  143  for connection to a universal head connector. In addition, there is a paint pad support  145 , a paint manifold outlet with at least one port  147 , and a paint pad holder and paint supply tube, collectively shown as unit  149 . 
       FIG. 8  is a back view of an embodiment of a present invention interchangeable liquid dispenser with interchangeable head and operating mechanism, illustrating an interchangeable brush head unit  150 . The interchangeable brush head unit  150  includes a rigid head tube  151  with hosing inside with a threaded end  153  for connection to a universal head connector. In addition, there is a brush support and liquid manifold, collectively shown as unit  155 , and a brush  157 . 
       FIG. 9  is a front view of another embodiment of a present invention liquid dispenser with interchangeable head and operating mechanism  201 , illustrating a segmented handle member. The liquid dispenser with interchangeable head and operating mechanism  201  includes an elongated handle member  203 , a universal head connector  209 , and an interchangeable head  211 . The elongated handle member  203  includes a handle with controls  205 , a removable middle segment  215 , and a top segment  213 , and a storage compartment  207 . The handle with controls  205  includes male connecting means for connection to a female connecting means of the middle segment  215 . An upper portion of the middle segment  215  includes male connecting means for connection to a female connecting means of the top segment  213 . The male connecting means of the handle with controls  203  is sized and shaped to connect with the female connecting means of the top segment  213 . Thus, the length of the elongated handle member may be adjusted. 
       FIG. 10  is a front view of a universal stopper unit  220  for fitting into different diameter containers. The universal stopper unit includes a large stopper plug  221 , a middle stopper plug and a small stopper plug  225 , all for providing for a plug fit for different diameter containers in order to transfer liquid into the liquid reservoir. A slideable fluid conduit  227  is used for moving the liquid from a connector fluid conduit  229  having connection to the refill inlet  50  of  FIG. 1  on one end and connection to the slideable fluid conduit  227  on the other end. The connector fluid conduit  229  for reservoir refill is sized and shaped to connect to the refill inlet  50  of  FIG. 1 . Alternatively, custom fit stoppers or covers with dip tubes may be used for filling or refilling the reservoir. One example would be the covers with dip tubes and tubing used for one gallon and five gallon paint cans. 
       FIG. 11  is a front view of a camelback bag unit for transferring liquid  240  in which the camelback bag unit  240  is the liquid reservoir. The camelback bag unit  240  includes a collapsible bag  241  for holding liquid which has an outlet  245  with connector  247  for connection to fluid conduit extending into the pump unit for dispensing, e.g. pumped through fluid conduit  15  of  FIG. 1 . In addition, there is a refill port  243  with an easy open cap for transferring liquid from an external source into the camelback bag unit. In this case, there is no refill inlet  50  of  FIG. 1 , but the storage compartment opens on a side to allow for placement of the bag  241  and the refill port  243 . 
     Although particular embodiments of the invention have been described in detail herein with reference to the accompanying drawings, it is to be understood that the invention is not limited to those particular embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined in the appended claims.