Dumpster with a moveable false floor and method of collecting trash using the same

Abstract

A dumpster having a moveable false floor which moves from a bottom of the dumpster toward a top opening when the dumpster is tilted to a substantially inverted orientation during collection of trash. The moveable false floor has freedom to move a predetermined length toward the top opening, where upon reaching the predetermined length a restraining means abruptly stops the floor causing the dumpster to shake dislodging adhered trash. Upon being returned to an upright orientation the moveable false floor moves back to the bottom.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other objects will become more readily apparent by referring to the following detailed description and the appended drawings in which:

FIG. 1 is a side view of the invented dumpster with a movable false bottom and a trash collection truck, diagrammatically illustrating that when the dumpster is lifted and tilted toward an inverted orientation, the bottom moves downward, therein pushing trash out of the top opening and causing the dumpster to shake;

FIG. 2 a is a side view of the invented dumpster having an upright orientation, wherein the viewer can see the restraining means in a collapsed mode and the position of the movable false bottom;

FIG. 2 b is a side view of the invented dumpster having an inverted orientation, wherein the viewer can see the restraining means fully extended to a predetermined length and the position of the movable false bottom when the restraining means are fully extended;

FIG. 3 is a perspective elevational view of the inverted dumpster without a covering lid, wherein a side-wall 14 of the dumpster is removed to enable the viewer to see the interior of the dumpster; and

FIG. 4 is a perspective elevational view of the inverted dumpster without a covering lid, just prior to movement by the movable false bottom, wherein the planar member forming the movable false bottom of the dumpster is structurally reinforced with a beam.

DETAILED DESCRIPTION

Referring now to the drawings, and particularly to FIG. 1, FIG. 2a and FIG. 2b, the invented dumpster 10 is a walled container 11 with a moveable false floor 12. The illustrated dumpster 10 has a covering lid 9 that is hinged 9, so that when the dumpster is tilted to an inverted orientation the lid opens exposing a top opening 3 as illustrated in FIG. 2b. The illustrated dumpster has forklift channels 30 that receive and are engaged by forks on a trash collection truck 100 fitted with a hydraulic lifting-tilting system. The invented dumpster has a moveable false floor 12 comprised of a planar member that substantially forms the cross-sectional area of the floor. Attached or otherwise apart of the planar member are a plurality of upper coupling elements 21, on a lower side of the planar member (moveable false floor 12). A plurality of lower coupling elements 23 are fixedly attached to the dumpster 10 proximate to the bottom 5. There is a restraining means comprised of a plurality of connecting elements, where a connecting element 25 is attached to an upper coupling element 21 and a lower coupling element 23. The connecting elements in unison provide the moveable false floor freedom to fall a predetermined length toward the top opening 3, therein pushing out trash when the dumpster is tilted toward an inverted orientation as shown in FIG. 2b. When the movable floor 12 reaches the predetermined length the restraining means abruptly stops the floor causing the dumpster to shake dislodging adhered trash. After emptying, the dumpster is returned to an upright orientation, and the floor returns to the bottom 5 of the dumpster 10.

FIG. 3 is a perspective elevational view of the inverted dumpster without a covering lid, wherein a side-wall 14 of the dumpster is removed to enable the viewer to see the interior of the dumpster. The planar member forming the movable false floor 12 is illustrated as a flat sheet, but as shown in FIG. 4 the floor can have structural reinforcing elements 13, such as beams. Likewise, the sidewalls 14, 16 (shown in FIG. 3 and FIG. 4) are also depicted as being unsupported sheets, and this is for merely clarifying the invention and is not meant as limiting, and the sidewalls can have structural reinforcing elements.

The connecting elements 25 as previously discussed extend to a predefined length. This is shown in FIG. 3, where upon reaching that length, they define the distance of travel of the movable floor from the bottom 5 toward the top opening 3. The movable floor 12 does not need to travel all the way to the top opening 3 to effectively facilitate emptying the dumpster. If the movable floor moves less than a few feet it is relatively easy to keep aligned, and yet provides enough force to quickly push out the trash and shake the dumpster so as to dislodge trash adhered to the sidewalls of the dumpster. Chain is a preferable connecting element 25 that is a collapsible member. Chain is strong, inexpensive, easy to install, relatively easy to adjust, it is highly collapsible, requiring little space when the movable floor is on the bottom of the dumpster, and it does not easily entangle so long as both ends are connected. As can be seen in FIG. 3 and FIG. 4, the chain 25 is connected to eyelets and the like. The upper coupling element 21 is a bracket with an eyelet, and the lower coupling element 23 is a bracket with an eyelet attached to the flange 22.

The dumpster preferably has a plurality of stops 26 that prevent the moveable false floor 12 from hitting the plurality of lower coupling elements 23. The stops 26 can be selected to also impart noise dampening as the floor returns to the bottom, as well as stop the movement of the floor. Examples of noise dampeners are rubber pads, springs, pressure release pistons, and the like.

The moveable false floor 12 can additionally be aligned with a guiding means 20, which is shown in the corners formed by the side-wall 14 and the end-wall 16. The guiding means 20 comprises a plurality of vertical longitudinal rails and intersecting slidable members. Examples of slidable members are bearings, rings, wheels, and pipes. Examples of vertical longitudinal rails are bars, pipes, angle iron, tube steel, and the like. More elaborate alignment systems, such as rack and pinion systems can be used, but in general are too expensive and not robust enough for the application.

In operation, the moveable false floor starts to move towards the top when the dumpster is tilted greater than about 90 degrees. As a practical matter, the dumpster is normally inverted so quickly, that the moveable false floor moves only a short distance before the dumpster is inverted. Likewise, when the dumpster is tilted upright, the moveable false floor starts to move towards the bottom when the dumpster is tilted to an angle less than about 90 degrees, but as a practical matter the rotation is so quick, that very little movement of the floor occurs before the dumpster is upright, so alignment is less of an issue than one might speculate. If the trash collection truck has very slow operating hydraulic lift-tilt system, the guiding means operation will delay movement by the false floor until the dumpster is approaching a fully inverted orientation.

The invented apparatus changes the method of collecting trash. In a conventional collection, after tilting the dumpster from an upright orientation towards an inverted orientation, the hydraulic lift-tilt system is used to shake the dumpster, and if the design to the dumpster permits, the dumpster is banged on the collection port of the truck to dislodge the trash. With the invented dumpster the moveable false floor drops a predetermined length from the bottom of the dumpster, wherein said dropping false floor pushes trash out of the dumpster through the top opening, and upon reaching the predetermined length the floor is abruptly stopped causing the dumpster to shake therein dislodging adhered trash. No banging or shaking is performed by the trash collection. When the invented dumpster is returned to the upright position, the moveable false floor moves back to the bottom. The method reduces the time required for emptying the dumpster, as there is no shaking or banging step.

A conventional dumpster with a fixed bottom wall and a top opening to a dumpster with a moveable false floor can be converted to the invented dumpster. The method comprises the steps of: opening and/or removing a covering lid if the dumpster is equipped with one; removing all or selected portions of the fixed bottom wall of the dumpster to create access from the bottom of the dumpster; fixedly attaching a plurality of stops and a plurality of lower coupling elements to the dumpster at a point proximate to the bottom wall, where the stops are positioned to prevent the moveable false floor from hitting the lower coupling elements; fitting the moveable false floor comprised of a planar member with a plurality of upper coupling elements on a lower side of the plate; lowering the moveable false floor into the dumpster such that said moveable false floor rests on the stops; repositioning the covering lid if the dumpster is equipped with one; and attaching a restraining means, wherein said restraining means comprises a plurality of connecting elements, where a connecting element is attached to an upper coupling element and a lower coupling element, where said restraining means provides the moveable false floor freedom to move a predetermined length toward the top opening, where upon reaching the predetermined length the restraining means abruptly stops the floor causing the dumpster to shake dislodging adhered trash, and then when the dumpster is returned to an upright orientation, the floor returns to the bottom of the dumpster.

From the foregoing, it is readily apparent that I have invented an improved dumpster, wherein the dumpster can be emptied without shaking or banging to dislodge trash adhered to the walls and rim of the dumpster, thereby reducing the maintenance on the trash collection trucks. Furthermore, I have invented a dumpster that can be emptied faster than a conventional dumpster.

It is to be understood that the foregoing description and specific embodiments are merely illustrative of the best mode of the invention and the principles thereof, and that various modifications and additions may be made to the apparatus by those skilled in the art, without departing from the spirit and scope of this invention, which is therefore understood to be limited only by the scope of the appended claims.

Claims

1. A dumpster, said dumpster comprising: a walled container;a moveable false floor comprised of a planar member having a plurality of upper coupling elements on a lower side of the planar member, where said moveable false floor moves from a bottom of the dumpster towards a top opening of the dumpster when the dumpster is tilted from an upright orientation towards an inverted orientation, and upon retuning the dumpster to the upright orientation the moveable false floor moves back to the bottom;a plurality of lower coupling elements fixedly attached to the dumpster proximate to the bottom; anda restraining means, wherein said restraining means comprises a plurality of connecting elements, where a connecting element is attached to an upper coupling element and a lower coupling element, where said restraining means provides the moveable false floor freedom to fall a predetermined length toward the top opening pushing out trash when the dumpster is tilted toward an inverted orientation, where upon reaching the predetermined length the restraining means abruptly stops the floor causing the dumpster to shake dislodging adhered trash, and then when the dumpster is returned to an upright orientation, the floor returns to the bottom of the dumpster.

2. The dumpster, as claimed in claim 1, wherein said connecting element is comprised of a collapsible member selected from the group consisting of a chain, a telescoping rod, a pneumatic cylinder, a hydraulic cylinder, a cable, a line, or a combination thereof.

3. The dumpster, as claimed in claim 2, wherein said member is a chain.

4. The dumpster, as claimed in claim 1, wherein said upper coupling element is a bracket with an eyelet.

5. The dumpster, as claimed in claim 1, wherein said lower coupling element is a bracket with an eyelet.

6. The dumpster according to claim 1, where the dumpster further comprises a plurality of stops that prevent the moveable false floor from hitting the plurality of lower coupling elements.

7. The dumpster, as claimed in claim 1, wherein said moveable false floor starts to move towards the top when the dumpster is tilted greater than about 90 degrees.

8. The dumpster, as claimed in claim 7, wherein after the dumpster has been tilted past 90 degrees, said moveable false floor starts to move towards the bottom when the dumpster is tilted to an angle less than about 90 degrees.

9. The dumpster, as claimed in claim 1, wherein said planar member is structurally reinforced with beams.

10. The dumpster according to claim 1, wherein said dumpster further comprises a covering lid that closes over the top opening.

11. The dumpster according to claim 1, wherein said dumpster further comprises a guiding means, wherein said guiding means helps maintain the moveable false floor aligned substantially perpendicular to a sidewall of the dumpster, and delays movement by the false floor until the dumpster is approaching a fully inverted orientation.

12. The dumpster according to claim 6, wherein said stops are a dampening means that slowly stop the movement of the false floor when it returns to the bottom of the dumpster.

13. A method of collecting trash from a dumpster with a top opening and a bottom, where said dumpster has a moveable false floor, said method comprising the steps of: engaging the dumpster using a hydraulic lifting-tilting system;raising the dumpster from its storage location to a position substantially above a collection port of a trash collection truck;tilting the dumpster from an upright orientation towards an inverted orientation, therein causing said moveable false floor to drop a predetermined length from the bottom of the dumpster, said predetermined length being set by a restraining means, wherein said dropping false floor pushes trash out of the dumpster through the top opening, and upon reaching the predetermined length the floor is abruptly stopped causing the dumpster to shake therein dislodging adhered trash;returning the dumpster to the upright position causing the moveable false floor to move back to the bottom;lowering the dumpster; anddisengaging the hydraulic lifting-tilting system from the dumpster.

14. A method of converting a conventional dumpster with a fixed bottom wall and a top opening to a dumpster with a moveable false floor, said method comprising the steps of: opening and/or removing a covering lid if the dumpster is equipped with one;removing all or selected portions of the fixed bottom wall of the dumpster to create access from the bottom of the dumpster;fixedly attaching a plurality of stops and a plurality of lower coupling elements to the dumpster at a point proximate to the bottom wall, where the stops are positioned to prevent the moveable false floor from hitting the lower coupling elements;fitting the moveable false floor comprised of a planar member with a plurality of upper coupling elements on a lower side of the plate;lowering the moveable false floor into the dumpster such that said moveable false floor rests on the stops;repositioning the covering lid if the dumpster is equipped with one; andattaching a restraining means, wherein said restraining means comprises a plurality of connecting elements, where a connecting element is attached to an upper coupling element and a lower coupling element, where said restraining means provides the moveable false floor freedom to move a predetermined length toward the top opening, where upon reaching the predetermined length the restraining means abruptly stops the floor causing the dumpster to shake dislodging adhered trash, and then when the dumpster is returned to an upright orientation, the floor returns to the bottom of the dumpster.

15. The method, as claimed in claim 14, wherein said connecting element is comprised of a collapsible member selected from the group consisting of a chain, a telescoping rod, a pneumatic cylinder, a hydraulic cylinder, a cable, a line or a combination thereof.

16. The method, as claimed in claim 15, wherein said member is a chain.

17. The method, as claimed in claim 14, wherein said upper coupling element is a bracket with an eyelet.

18. The method, as claimed in claim 14, wherein said lower coupling element is a bracket with an eyelet.

19. The dumpster according to claim 11, wherein said guiding means comprises a plurality of vertical longitudinal rails and intersecting slidable members.