Abstract:
An extendible hose assembly for extending from a .Iadd.holding tank of a .Iaddend.portable toilet service truck or similar service vehicle to a portable toilet or similar tank to be serviced. The assembly has two rotational hinges for horizontal movement of hoses and at least one hinge allowing vertical movement of hoses. The combination of hinges allows the hoses to be extended for use in any direction from the .Iadd.tank carried by the .Iaddend.service vehicle .Iadd.and to be compactly folded in substantially &#34;side-by-side&#34; relation longitudinally along the length of the holding tank.Iaddend..

Description:
.Iadd.Cross Reference of Related Application 
     This is a continuation of reissue patent application Ser. No. 07/434,888, filed Nov. 13, 1989, now abandoned which is a reissue application for U.S. Pat. No. 4,708,179, issued Nov. 24, 1987 which was filed as Ser. No. 041,418, filed on Apr. 22, 1987. Furthermore, this, .Iaddend. .[.This.]. application .Iadd.Ser. No. 041,115 .Iaddend. is a continuation-in-part of application Ser. No. 818,874 filed Jan. 14, 1986, now abandoned. 
    
    
     BACKGROUND OF THE INVENTION 
     This invention relates to an extendible hose assembly for positioning on a vehicle for servicing portable toilets and the like. 
     Heretofore it has been customary to wrap a flexible portable hose used in servicing portable toilets around front and rear or like posts, poles or similar mounting arms on the tank of a service vehicle. This has caused numerous problems when attempting to service portable toilets from a service truck. For example, it is time consuming to unwrap and extend the hoses from the truck or like vehicle to the portable toilet, as a long hose has to be wrapped around the mounting arms so that it will reach the toilet when the service vehicle cannot be parked reasonably close thereto. The unwrapping results in the hose falling from the truck and dragging on the ground or through the mud in bad weather in attempting to extend it. 
     SUMMARY OF THE INVENTION 
     The present invention is directed to an extendible hose assembly which solves all of the above problems by using at least two hinges to mechanically support the hose assembly and to allow the same to swing in a horizontal plane. A third hinge located at the lower end of the second hinge permits a portion of the assembly to rotate in a vertical plane. 
     The extendible hose assembly comprises a first elongated, rigid pipe or hose mechanically connected to and extending horizontally from the first hinge to the second hinge and one end of a U-shaped flexible hose; the other end of the flexible hose is connected to one end of a second elongated rigid pipe or hose. The second rigid pipe, in turn, is connected to another flexible section. Hence, all of the hose and pipe portions are serially connected together and in fluid communication with each other. 
     The first hinge allows the entire hose assembly to swing horizontally, while the second hinge allows the second rigid pipe section to swing horizontally. The third hinge pivotally connects the second rigid pipe portion to the second hinge in a manner that allows the second rigid hose to pivot about the hinge vertically. 
     The first hinge is shown mounted on the task of a service vehicle, for example, such that a workman can conveniently swing the entire hose combination horizontally away from the tank. This allows the remote end of the last flexible hose of the assembly to be conveniently .[.manuverable.]. .Iadd.maneuverable .Iaddend.and can be easily inserted into the tank of a portable toilet, for example, to pump the contents thereof into the tank of the vehicle. 
     .Iadd.Additionally, the hinged arrangement of the present invention allows the extendible hose assembly to be folded in substantially &#34;side-by-side&#34; relation longitudinally along the length of the tank to permit transportation of the tank from one site to another. 
    
    
     BRIEF DESCRIPTION OF THE .[.DRAWING.]. .Iadd.DRAWINGS.Iaddend. 
     For a better understanding of my invention reference will now be made to the .[.drawing.]..Iadd.drawings .Iaddend. which .[.forms.]..Iadd.form .Iaddend.a part hereof and .[.represents .]. .Iadd.represent.Iaddend.a preferred embodiment of the invention. 
     In the .[.drawing,.]. .Iadd.drawings,.Iaddend. 
     FIG. 1 is a side elevation of a service vehicle with the extendible hose of the invention in storage or mounted position .Iadd.in vertical &#34;side-by-side&#34; folded relation longitudinally along the tank of the service vehicle. .Iaddend. 
     FIG. 2 is a perspective view of the service vehicle with the extendible hose in an operative position. 
     FIG. 3 is an end elevation taken on line 3-3 of FIG. 1. 
     FIG. 4 is an end elevation taken on line 4-4 of FIG. 1. 
     FIG. 5 is a perspective view showing a representative rear hinge or pivot construction. 
     FIG. 6 is a perspective view showing a representative front hinge or pivot construction. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring now .Iadd.to .Iaddend.the .[.drawing.]. .Iadd.drawings, .Iaddend.FIG. 1 thereof shows in side elevation a tank 12 of a service truck 10, and the extendible hose assembly of the invention, the assembly having six serially connected portions bearing numerals 18, 18&#39;, 20, 22, 24, and 54 respectively. 
     Still referring to FIG. 1, hose 20 is a flexible portion of the hose combination, and extends from an upper portion of tank 12 to a curved, rigid hose or pipe portion 54. Pipe portion 54 is attached to a vertically disposed hinge 14. Hinge 14 is shown mounted on an upper, rear portion of the tank. This is best seen in FIG. 3 of the drawings where hinge 14 is shown as being welded to the tank. 
     The perspective view of FIG. 5 best shows the attachment of hose portion 54 to hinge 14, and a suitable construction for the hinge. More particularly, the hinge is shown as being comprised of a straight tube or hollow cylindrical member 48 located between the legs of a U-shaped bracket, the legs supporting the ends of the cylinder. The cylinder (48) is .[.rotably.]. .Iadd.rotatably .Iaddend. secured in place between the legs of a bolt 50, extending through the legs and cylinder and a nut 52 threaded on the lower threaded end of the bolt. (Tube 48 and a similar structure 58 are discussed in greater detail below.) 
     Rigid pipe 54 is shown attached to cylinder 48 of hinge 14 by bars 56 and 56&#39; (FIG. 5) of flat bar stock such that 54 is swingable about the vertical axes of 48 and 50. 
     Pipe portion 54 curves downward to a lower end of hinge 14 and is shown serially connected to one end of an elongated, rigid, horizontally disposed (FIGS. 1 and 2) pipe or hose 18. Hoses 18 and 54 can be a single piece pipe member, i.e., 18 can be provided with a curved portion (54), as opposed to .[.be.]. being two pieces. A single pipe member is preferred, as it eliminates connecting the two members together and, of course, the physical connection itself. 
     The other end of pipe 18 is serially connected to one end of U-shaped flexible hose 22, and attached to a second, vertically disposed hinge 16, as best seen in FIG. 6. Again, hinge 16 is comprised of a straight tube or hollow cylindrical structure 58, through which extends a pin 60 in a manner that allows the pin to rotate in the cylinder. A lug 45 is attached to the upper end of the pin. A second pin 62 is suitably attached to the lower end of the pin 60 crosswise and perpendicular thereto. In addition, the end of rigid pipe 18 adjacent cylinder 58 is attached thereto by a relatively short piece of flat stock 66. 
     The other end of U-shaped flexible hose 22 is serially connected to a second elongated rigid hose or pipe 18&#39;. Adjacent the location of the connection are two supporting lugs 64 .[.suitable.]. .Iadd.suitably.Iaddend.attached to rigid pipe 18&#39;, as best seen in FIG. 6, and rotatably supported on pin 62, i.e., pin 62 extends into and between the lugs and in a manner that allows lugs 64 to rotate relative to pins 60 and 62. This provides a third hinge at the lower end of the second hinge. 
     The other end of rigid pipe 18&#39; is serially connected to one end of an elongated flexible hose 24. The other end of flexible hose 24 has connected thereto a suitable valve 26 and nozzle 28. 
     .Iadd.To support rigid pipe 18&#39; in its extended position (FIG. 2), a resilient support member comprised of end portions 30 and an intermediate joining spring-like portion 32 is provided. One end portion 30 is secured to lug 45 (as can best be seen in FIG. 6), and the second end portion 30 is secured to the end of rigid pipe 18&#39; which is connected to one end of flexible hose 24. .Iaddend. 
     Tubes or cylinders 48 and 58 are preferably made from long portions of commercially available, mild steel tube stock. The stock is cut to lengths that will fit into the space between the legs of the U-shaped brackets of hinges 14 and 16. Such tube stock is rigid and can also be used for horizontal pipes 18 and 18&#39;. Further, such stock can be bent to far curved portion 54 at the right hand end (in FIGS. 1 and 2) of pipe 18. In addition, the internal diameters of such tube stock are of a size that can receive commercially available bearing assemblies (bearings and bearing races), which are force fitted into the ends of 48 and 58. This provides hinge assemblies that are easily swingable about their axes. 
     For storing the combination of hoses, as thus far described, one side of tank 12 is shown provided with brackets 34, 36 and 38. As seen in FIG. 1, nozzle 28 seats in bracket 38, while an intermediate portion of flexible hose 24 rests in bracket 36. Bracket 34 receives the end of rigid pipe 18 that is connected to flexible hose 24. 
     .Iadd.As can be readily seen in FIGS. 1, 3, and 4 of the drawings, rigid hose sections 18 and 18&#39; are stored the vertical &#34;stacked&#34; side-by-side relation. This &#34;stacked&#34; arrangement is accomplished since the sections 18 and 18&#39; are mounted for horizontal movement in different, respective, horizontal planes as seen in FIG. 2. .Iaddend. 
     .Iadd.Thus, it can be seen that the rigid pipes and flexible hoses are foldable longitudinally along and snugly against the tank 12. Such folded relation permits the vehicle to be maneuvered through busy streets and other congested areas as it transports the service tank to areas where it may be needed. Such areas may be hard to reach, somewhat inaccessible, wooded areas, as areas under construction.