Abstract:
A material handling apparatus comprising a charging hopper having an upper first opening through which material can be loaded into the charging hopper and a lower second opening through which material can be discharged from the charging hopper. The apparatus includes a control member having a work head having one or more sections which is mounted for movement within the charging hopper about a pivot axis which extends generally laterally with respect to the normal upright operative position of the apparatus. The control member is pivotally movable about the pivot axis between a first position in which the work head is spaced from and disposed above the second opening, and a second position in which the work head is adjacent or within the second opening. The control member has a plurality of arms for pivotally mounting control member. A pivot bar is coupled to the mounting arms for maintaining stability between the mounting arms and to ensure proper movement of the control member.

Description:
RELATED APPLICATIONS 
     This patent application is related to U.S. Pat. No. 5,324,161 entitled “REFUSE RECEPTACLE CHARGING HOPPER” issued on Jun. 28, 1994 in the name of Helmut B. Thobe. The above patent is hereby incorporated into the present application. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates generally to a refuse receptacle and, more specifically, to a refuse receptacle having an improved charging hopper for compacting the refuse and a walking floor to remove the refused from the receptacle. 
     2. Description of the Prior Art 
     Refuse receptacles have been in use for a long time. One type of refuse handling apparatus includes a loading mechanism which feeds refuse to a holding receptacle whenever the refuse is compressed or compacted by a ram or press which forms part of the loading mechanism. Such apparatus is usually mounted on a truck or like vehicle and can be used in the collection of domestic refuse. Examples of such devices are described in U.S. Pat. Nos. 3,874,529, 3,881,613, 4,050,594, 4,298,306, 4,637,306 and 4,786,228. Devices of this type suffer from the disadvantage that they are generally complicated and, as a result, expensive and difficult to maintain. 
     U.S. Patent 5,324,161 discloses a refuse receptacle charging hopper. The charging hopper helps to overcome many of the disadvantages of the prior art. However, debris has a tendency to become stuck in the arms and cylinders of the control member. Furthermore, the control member is only designed to work in a single compartment refuse receptacle. 
     Therefore, a need existed to provide an improved refuse receptacle. The improved refuse receptacle must be able to overcome the problems associated with prior art refuse receptacle. The refuse receptacle must be able to keep debris from becoming stuck in the arms and cylinders of the control member. The refuse receptacle must further have a control member which may be used in a multiple compartment refuse receptacle. The improved refuse receptacle must further be able to easily unload the refuse once the refuse is collected. 
     SUMMARY OF THE INVENTION 
     In accordance with one embodiment of the present invention, it is an object of the present invention to provide an improved refuse receptacle. 
     It is another object of the present invention to provide an improved refuse receptacle which must be able to overcome the problems associated with prior art refuse receptacle. 
     It is still another object of the present invention to provide an improved refuse receptacle that is able to keep debris from becoming stuck in the arms and cylinders of the control member. 
     It is another object of the present invention to provide an improved refuse receptacle that has a control member which may be used in a multiple compartment refuse receptacle. 
     It is yet another object of the present invention to provide an improved refuse receptacle that is able to easily unload the refuse once the refuse is collected. 
     BRIEF DESCRIPTION OF THE EMBODIMENTS 
     In accordance with one embodiment of the present invention, a refuse handling apparatus having a collection receptacle is disclosed. The collection receptacle on the refuse handling apparatus has a charging hopper having a first opening for loading material into the charging hopper, a second opening through which material can be discharged from the charging hopper, the second opening being disposed below the first opening when the apparatus is in use. The charging hopper has a curved guide surface therein which extends between the first and second openings so as to form a slide for directing material towards the second opening. A control member is provided and has a work head which is mounted for movement within the charging hopper about a pivot axis which extends generally horizontally when the apparatus is in use. The control member is pivotally movable about the pivot axis between a first position in which the work head is spaced from and disposed above the second opening, and a second position in which the work head is adjacent or within the second opening. The curved guide surface of the hopper is generally complementary to the arc of movement of the lower most part of the work head between the first and second positions. The work head is disposed adjacent the guide surface and in close proximity thereto during movement between the first and second positions. The control member has a top surface of the work head, and a lower surface curved to substantially the same arc as the guide surface. The top surface is shaped to act as a sloping surface when the work head is in the first position to guide material towards the second opening, and wherein the top surface is at all times exposed to the hopper and the first opening so that material may enter into the first opening and the hopper irrespective of the position of the control member at and between the first position and the second position. The control member further has a block having a front wall, the top surface, the lower surface, and side walls, the front wall being arranged to push the material through the second opening and, to compact the material within the receptacle. Each of the side walls has a section which is complementary to the guide surface, the section of the side walls and the lower surface of the control member being adjacent to the guide surface of the charging hopper whereby when the control member moves from the second position to the first position the leading edge of the control member defined by the end of the top surface most remote from the front wall and the lower surface will tend to scrape material off the guide surface onto the top surface. Mounting arms are provided which have the work head operatively connected to one end thereof, the other ends of the mounting arms being mounted for pivotal movement about the pivot axis. A pivot tube is coupled to the mounting arms. The pivot tube is used for maintaining stability between the mounting arms and to ensure proper movement of the control member. 
     The foregoing and other objects, features, and advantages of the invention will be apparent from the following, more particular, description of the preferred embodiments of the invention, as illustrated in the accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The novel features believed characteristic of the invention are set forth in the appended claims. The invention itself, as well as a preferred mode of use, and advantages thereof, will best be understood by reference to the following detailed description of illustrated embodiments when read in conjunction with the accompanying drawings. 
     FIG. 1 is an elevated perspective of the improved refuse receptacle of the present invention. 
     FIG. 2 is a side view of the charging hopper used in the container section of the improved refuse receptacle. 
     FIG. 3 is a plan view of the charging hopper used in the container section of the improved refuse receptacle. 
     FIG. 4 is an end elevated view of the drive means used in the charging hopper of the improved refuse receptacle. 
     FIG. 5 is a schematic perspective view of a control member used in the charging hopper of the improved refuse receptacle. 
     FIG. 6A is an elevated front and rear perspective view of the control member used in the improved refuse receptacle of the present invention. 
     FIG. 6B is a side view of the control member used in the improved refuse receptacle of the present invention, the opposite side being a mirror image thereof. 
     FIG. 6C is a top view of the control member used in the improved refuse receptacle of the present invention. 
     FIG. 6D is an exploded view of the control member used in the improved refuse receptacle of the present invention. 
     FIG. 7A is an elevated perspective view of a second embodiment of the control member used in the improved refuse receptacle of the present invention. 
     FIG. 7B is an elevated perspective view of another embodiment of the control member used in the improved refuse receptacle of the present invention. 
     FIG. 8 is an elevated front and rear perspective view of the collection receptacle used in the improved refuse receptacle of the present invention. 
     FIG. 9 is a rear view of the moving floor used in the improved refuse receptacle of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to the figures, an improved refuse receptacle  100  (hereinafter receptacle  100 ) is shown. The receptacle  100  overcomes many of the problems associated with prior art receptacles. The receptacle  100  is designed to keep debris from becoming stuck in the arms  18  and drive means  27  of the control member  10 . The receptacle  100  is further able to have a control member  10  which may be used in a multiple compartment refuse receptacle. The improved receptacle  100  is also able to easily unload the refuse once the refuse is collected. 
     Referring to FIG. 1, the receptacle  100  is shown. The receptacle  100  can be a standard garbage truck which has been modified, a stationary, or a break away compactor. In the Figures, a standard garbage truck is shown implementing the present invention. However, this should not be seen as to limit the scope of the present invention. 
     The receptacle  100  has a collection receptacle  200  which is coupled to a frame of the receptacle  100 . The collection receptacle  200  is used to store the garbage which is collected. A loading arm  56  is also coupled to the receptacle  100 . The loading arm  56  is used to pick up refuse bins and discharge the contents through a chute  57  to the collection receptacle  200 . 
     The collection receptacle  200  has a charging hopper  3 . The charging hopper  3  has a side wall  5  with a first opening  6  in its top and a second opening  7  in a lower region of the side wall  5 . The charging hopper  3  further includes a base wall  8  having a curved surface  9 , which forms a slide directed from the first opening  6  towards the second opening  7 . In the particular application shown in FIG. 1, material from chute  57  is directed through the first opening  6  and material is passed through the second opening  7  into the collection receptacle  200 . 
     The charging hopper  3  further includes a control member  10  having a work head  12  disposed within the charging hopper  3 . The control member  10  being mounted for movement about a pivot axis  20  which extends generally horizontally as shown. The work head  12  moves in an arc about the pivot axis  20  between a first or raised position in which the work head  12  is spaced from the second opening  7  and a second or lowered position in which the work head  12  is adjacent or within the second opening. 
     The work head  12 , as shown is in the form of a wedge having a front wall  14 , a top wall  15  and side walls  16 . In operation the front wall  14  is arranged to push the material in the charging hopper  3  through the second opening  7  and where necessary compact the material within the collection receptacle  200 . 
     The side walls  16  of the work head  12  each have a curved lower edge  17  which is complementary to the curved guide surface  9  of the charging hopper  3 , the curved lower edges  17  of the side wall of the work head  12  being adjacent to the curved guide surface of the charging hopper  3 . As best seen in FIG. 2 the top wall  15  and side walls  16  converge towards one another in the direction of the trailing edge of work head  12 . Thus when in the raised position as shown in FIG. 2, the work head  12  does not interfere with the opening  6  of the charging hopper  3 . 
     The control member  10  further includes a pair of mounting arms  18  which have the work head  12  operatively connected to one thereof, the other ends being mounted for pivotal movement about the pivot axis  20  in suitable bearings  19 . The mounting arms  18  are disposed at the sides of the work head so as to ensure a minimum of interference at the first opening  6 . 
     The top wall  15  of the work head  12  forms a cover above the second opening  7  when the control member is in the lowered or second position so that material being loaded into the charging hopper  3  through opening  6  will not interfere with the material being discharged through the second opening. As best seen in FIG. 2, when the work head  12  is in the first or raised position, the top wall is positioned such that it is adjacent the side wall  31  of the charging hopper  3 . 
     Drive means  25  causes movement of the control member  10  between the first and second positions. The drive means  25  is in the form of hydraulic pistons/cylinder assemblies  27  operatively interconnected between the mounting arms  18  and the charging hopper  3 . The piston/cylinder assemblies  27  are mounted on pivot pins  28  and  29  on the charging hopper  3  and the mounting arms  18  respectively. 
     As may be seen more clearly in FIGS. 6A-6D, the control member  10  has a pivot tube  50 . The pivot tube  50  has a mounting collar  51  connected to each end of the pivot tube  50 . The pivot tube  50  via the mounting collars  51  is coupled to both mounting arms  18  and the cylindrical crank arms  52 . Each mounting arm  18  and cylinder crank arm  52  has an opening at the top thereof. The pivot tube  50  extends through the openings and is coupled to a first mounting collar  51 . The mounting collar  51  extends through the openings and is coupled to mounting arms  18  and the cylinder crank arms  52 . The pivot tube  50  is then coupled to the second mounting collar  51  where the second mounting arm  18  and the second cylinder crank arm  52  are coupled to. The drive means  25  are then connected to the cylinder arms  52  via the cylinder crank arms ears  53 . The pivot tube  50  helps to maintain stability between mounting arms  18  and the cylinder crank arms  52 . The pivot tube  50  and the cylinder crank arms  52  also helps one to mount the drive means  25  outside of the charging hopper  3 . This allows for simple service and maintenance and longer life of the receptacle  100 . 
     If trash blocks the driving means  25 , the control member  10  will be unable to move. Thus, a protective cover  59  is placed over the driving means  25 . The protective cover  59  is placed over both driving means  25  and is coupled to the control member  10 . The protective cover  59  is designed to allow the control member  10  to move freely but prevent garbage from blocking and jamming the driving means  25 . The protective cover  59  can be made out of any type of material. In general, a light weight metal is used. However, this should not be seen as to limit the scope of the present invention. 
     Referring now to FIG. 7A, another embodiment of the control member  10  is shown. In this embodiment, the control member  10  is a two piece control member  10 . A two piece control member  10  is used in a receptacle  100  which collects different types of refuse. For example, a receptacle  100  that collects both recyclable and non-recyclable items. In this case, the collection receptacle  200  will be divided into two compartments: one for recyclable items and another for non-recyclable items. The charging hopper  3  is similar as described above. The main difference is that the charging hopper  3  is designed to have two separate openings for receiving the different types of garbage. The control member  10  is also divided into two components to move and compact the items in each compartment of the collection receptacle  200 . The control member  10  is similar to that described above. The main difference is that the working head  12  is divided into two sections. Additional mounting arms  18  are positioned between each section of the working head  12  to provided additional support. The pivot tube  50  runs through openings in each of the mounting arms and is coupled to the drive means  25 . The drive means  25  may be configured to drive both sections of the control member  10  together or individually. It should be noted that the control member may be divided into more than two sections. The showing of two sections should not be seen as to limit the scope of the present invention. 
     Referring to FIG. 7B, another embodiment of the control member  10  is shown. In this embodiment, the control member  10  is a two piece control member  10  and similar to that shown and described above. The main difference is that the working head  12  which is divided into two sections are positioned in a vertical manner such that one head is positioned above a second head. This is done so that while one head is compacting the refuse, the second head can be used to scrape material off of the collection receptacle. 
     In a prior art refuse receptacles, in order to empty the collection receptacle, one end of the collection receptacle is raised. The other end of the collection receptacle is opened so that the collected garbage can discharged from the collection receptacle. Referring to FIG. 9, an internal view of the collection receptacle  200  is shown. The collection receptacle  200  has a moving floor  60 . The moving floor  60  will discard the garbage from the rear of the collection receptacle  200  without having the collection receptacle  200  having to be raised. The moving floor  60  has a plurality of floor boards  62 . The floor boards  62  may be made out of any type of material. In general a light weight metal is used. However, this should not be seen as to limit the scope of the present invention. The floor board  62  is generally in the form of a hollow rectangular tubing having a channeling  64  formed there through. A plurality of wheel member  66  are mounted to each floor board and are located in the channeling  64 . The wheel member  66  will allow the floor board to in a forward and reverse manner. When the floor boards  62  move in conjuction with one another, the garbage stored in the collection receptacle  200  will be moved and discarded out of the collection receptacle  200 . 
     In operation, material such as refuse can be loaded into the charging hopper  3  through the first opening  6  thereof. With the control member  10  in the first or raised position the material falls onto the curved guide surface on the base of the charging hopper  3  and under the influence of gravity is directed towards the second opening  7  from where it passes into the holding receptacle  51 . 
     Activation of the drive means  25  causes the control member  10  to move from the first position where the work head  12  is raised to the second position where it is disposed adjacent the second opening  7  and thereby forcing the material into the holding receptacle and when necessary compacting or compressing the material. As shown in FIG. 2, the arcuate length of the lower surface of control member  10  adjacent guide surface  9  is less than half the arcuate swing of the control member  10  between the first position and the second position. 
     In the second or lowered position the top wall  15  of the work head  12  forms a barrier over the second opening  7  thereby ensuring that any material deposited in the charging hopper  3  with the control member in the second position does not interfere with the compressing action of the work head. Further activation of the drive means causes the control member to return to the first position where the operation can be repeated. 
     While the invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing and other changes in form and details may be made therein without departing from the spirit and scope of the invention.