Industrial waste container with rounded bottom and method of making the container
A roll-off cable system industrial waste container includes a frame, a container body fixedly connected to the frame and having a rounded bottom defining a container interior for holding industrial waste, and a hoist connector connected to the frame and/or container body for pulling the structure onto a truck. The frame has two top lateral rails, a top front rail connected to the two top lateral rails, a front rail assembly connected at least to the top front rail, a bottom rail assembly connected at least to the front rail assembly, and a rear door assembly connected at least to the bottom rail assembly and one of the two top lateral rails. The door assembly has a pivotable door, a doorframe, and a locking assembly, all of substantially the same material as the body, in particular, steel. A method for making the container is also provided.
This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Application No. 60/495,628, filed Aug. 15, 2003, and U.S. Provisional Application No. ______ (Atty. Docket No. GLM-8331 Prov2) , filed Aug. 11, 2004.
BACKGROUND OF THE INVENTION Field of the InventionThe invention lies in the field of waste disposal. In particular, the invention is in the field of industrial waste containers that are moved to and removed from construction sites, for example, and are used to hold a significant amount of construction debris—measured in cubic yards—and methods of making such containers.
Such industrial waste containers that exist are made of steel and have four walls and a floor. The four walls form a rectangular box and the floor completes the box to form an open-top waste container. Each of the four walls is substantially vertical and meet at four intersecting corners at right angles (90 degrees). To hold the substantial amount of debris therein, i.e., tons, the walls and floor are integral or are fixedly connected (e.g., welded) to one another in a way that is intended not to separate under the load of the debris. Because of this construction, the waste has direct access to the weld seams of the container and contaminates the seams. The steel, by nature, oxidizes. Thus, after time, the container, when exposed to liquids, oxidizes at the seams.
Also provided, typically, are two cylindrical rollers at a rear bottom side that allow the container to roll over a surface when the front bottom is lifted off of the ground on which the container rests and pulled up a rail system disposed on a truck, the rail system and pulling device being commonly referred to as a roll-off cable system. The containers are transported by the roll-off truck and are mounted off and on the truck by a hoist system.
The prior art industrial waste containers have this configuration because they need to easily load onto and unload from a vehicle that delivers the empty container to a site to be filled, off-loads the empty container at the site, on-loads the container at the site when full, and carries the loaded container to a site at which the debris is dumped out, thereby allowing the container to be reused again.
The truck that will move such a container has a flat “bed” on which the container rests when being transported. At the front of the bed, a winch is disposed and, when loading and unloading the container, is connected to a front side of the container, e.g., by a chain and/or cable assembly. To load the container, the bed tilts down at the back to touch the ground on which the container rests. The winch assembly is connected to the front side of the container and begins to pull the container towards the front of the bed and up along the inclined bed. Two rail guards on the bottom of the container are guided upon rails disposed on the bed to make sure that the container enters the bed in a straight line. As the front of the container lifts, the bottom of the container leaves the ground surface and, substantially, only the rear rollers engage the ground. Thus, the container moves easier as it travels up the bed. After a given distance, the bed is tilted back to horizontal, lifting the entire container off of the ground in the process. To complete the loading, the winch continues pulling the container forward until the container is in a traveling position. The flat surface of the container bottom and the flat surface of the bed provide a relatively smooth surface on which the container can slide. Of course, the bed can have an imbedded roller assembly to allow easier movement of the container thereon.
If the entire bottom surface of the container is flat, it easily slides along the flat surface of the truck on which it is to be transported. Thus, the conventional containers have flat, planar bottoms.
Such a configuration, however, has obvious disadvantages. First, it is hard to unload the waste therefrom because the only access is from the top. In this orientation, only two options are available, either the container needs to be flipped over to be emptied—a feat requiring a substantial amount of effort and machinery or a separate device (such as a crane with a scoop bucket) needs to be lowered into the open top from above to scoop out the waste from within. While the former can, in theory, allow the container to be completely emptied, the latter cannot. The scoop bucket is not designed to clear out the corners of the interior and, therefore, it cannot completely empty the container.
It would be desirable, therefore, to provide an industrial waste container that permits easy removal and/or dumping of the tons of waste therein without requiring a substantial amount of machinery, effort, or inefficiency.
SUMMARY OF THE INVENTIONIt is accordingly an object of the invention to provide an industrial waste container with a rounded bottom and method of making the container that overcome the hereinafore-mentioned disadvantages of the heretofore-known devices of this general type and that decreases the unloading time and effort required for unloading and increases the safety and usability of the container.
The container according to the present invention has a rounded floor but still allows the container to be picked up by a roll-off cable hoist system, which can include a winch and cable or a cylinder with a cable. Also, the round configuration prevents contamination of corners because it has none. Furthermore, the container has a rear door. The rear door can be equipped with an automatically locking latch system. Once the locking bar is down, even if the driver does not install a safety pin, the door is prevented from opening.
The round bottom, roll-off open top container is constructed of heavy-duty steel, for example, grade A3, A529, or any type of hot rolled steel. The container is transported by truck using a roll-off hoist system that detaches from the container after the container is unloaded.
The round bottom of the container provides significant advantages over conventional industrial waste containers.
First, it is mechanically stronger. An arched configuration is, by its nature, stronger than a square (bathtub style) container.
Second, the rounded interior bottom is more resistant to rust. Rust is caused by debris residue remaining in the container. Because remaining debris is reduced in the present invention, the container is cleaner and rust is inhibited.
Third, the rounded bottom gives the driver greater visibility. The sides of the container are rounded. Thus, the driver has access to and can see—from the cab of the truck—the two rear corners of the container. This allows the driver to decrease the chances of collision because the driver has a better field of view and depth of field.
Fourth, repair is easier. A rounded bottom allows an individual to access almost all of the bottom surface of the container, whether empty or full. Thus, repairs to the bottom surface are easy. In contrast, to repair a bottom of a conventional bathtub container, the entire container needs to be lifted off of the ground or at least one end has to be lifted up. Each of these processes increases danger to users because of the possibility that the container could fall down. The container of the present invention has virtually all of its bottom surface open to the user without requiring movement, tilting, and/or lifting of the container.
The most significant of all advantages lies in the improvements associated with dumping the debris.
Because of the box-like shape of conventional industrial waste containers, the debris has pockets and corners to stick to, which inhibits dumping. Thus, to empty the conventional container, the driver was required to jerk the truck (backward and/or forward) to loosen the debris. Specifically, the container was tilted to approximately 52 degrees, the driver backed up to a fast speed (relative to a truck moving tons of debris with the container raised to a >45 degree angle), and, then, pressed the brake to impart a rearward momentum to the debris. To fully empty the container, this process was repeated a number of times. As is apparent, this is not a safe process, nor is it good for the truck. Due to the immense weight, the driver always ran the risk of tipping over the container and/or the truck. Further, the process imparted significant wear to the brakes, drums, and tires, and loosened the frame of the truck.
With the container of the present invention, this dangerous process is entirely eliminated. The arched bottom has no corners. As a result, the debris has no pockets and or corners in which to stick. Because of the rounded bottom, the debris naturally and easily slides out of the container when tilted to approximately 30 degrees, i.e., the angle formed between horizontal and the bottom longitudinal axis of the container is approximately a 30 degree acute angle with the rear of the container lying at the apex of the angle. Safety is improved at this substantially lower angle, and less energy is required to tilt the container.
Other features that are considered as characteristic for the invention are set forth in the appended claims.
Although the invention is illustrated and described herein as embodied in an industrial waste container with a rounded bottom, it is, nevertheless, not intended to be limited to the details shown because various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
The construction and method of operation of the invention, however, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring now to the figures of the drawings in detail and first, particularly to
The container 1 has two sub-sets of parts including a body 10 and a frame 20.
The body 10 is made of a set of curved body planks 12 connected together to form a half-pipe, and a front wall 14. Of course, the set of planks 12 can be a single plank 12. The frame 20 is made of a set of two top lateral rails 22, a top front rail 24, a top rear rail 26, a front rail assembly 30, a bottom rail assembly 40, and a rear door assembly 60. It is noted that the top rear rail 26 can be eliminated or be a part of the rear door assembly 60.
The planks 12 are individually formed by taking a rectangular sheet of heavy-duty steel (for example, hot rolled steel) and rolling it into the substantially half-circular shape shown in
While a half-pipe shape is preferred for the reasons described herein, the shape need not be an entire half-circle. In an alternative embodiment shown in FIGS. 18 to 29, the bottom of the body 10 can be somewhat flattened or flattened (e.g., for up to 1.5 meters) and the two sides can curve at the sides of the bottom up towards the top lateral rails 22 of the frame 20. The curve of the two sides of each plank 12 can extend all the way up to the top lateral rails 22 or, in the alternative, embodiment, the curve can extend approximately half way up to the top lateral rails 22 and, thereafter, travel substantially vertical to meet and connect to the top lateral rails 22.
The container 1 has a desired length L, for example, approximately 6¼ meters (20 to 22 feet). Thus, if four planks 12 are used, they each have a width of approximately 1½ meters (−5 feet). The connection width between each plank needs to be taken into account in calculating the length L if the planks 12 do not directly abut one another. In a preferred embodiment, the planks 12 are welded directly to one another at their sides. As set forth herein, connection of the parts or between parts can be in any manner that can withstand the load weight envisioned by standard industrial waste containers (from 10 to 50 cubic yards). Thus, while the preferred connection process is set forth as being welding, it is not limited thereto.
The ends of the planks 12 can have flanges 16 to increase the welding areas, which flanges are shown in
Once the desired number of planks 12 are connected to one another, a front wall 14 can be fixedly connected (preferably, welded) to the leading side of the forward-most plank 12 (the left-most plank 12 in
The body 10 can, then, be placed into a secondary structure, the frame 20, for keeping the body 10 oriented with the top opening facing upward. The top opening of the body 10 is rested against or is fixedly connected (e.g., welded) to the two top lateral rails 22 and the top front rail 24.
A bottom rail assembly 40 is provided and the body 10 is placed thereon. The front rail assembly 30 is fixedly connected (e.g., welded) to a forward end of the bottom rail assembly 40, as shown in
To complete the frame 20, a rear door assembly 60, shown in particular, in
As can be seen in
The door 70 can simply be a one-piece sheet of material, preferably, 7-gauge or 10-gauge hot rolled steel. Or, as shown in
The doorframe 80 includes an end plate 82, a door connection wall 84, a lock wall 86, and at least one floor 88.
The end plate 82 can be seen best in
The doorframe 80 includes a rear frame for support. The rear frame includes the door connection wall 84, the lock wall 86, and the floor 88. The door connection wall 84 is a vertical wall connected at a top thereof to the left top lateral rail 22 and at a bottom thereof to a floor 88, which is also connected to the bottom rail assembly 40. The lock wall 86 is, similarly, a vertical wall connected at a top thereof to the right top lateral rail 22 and at a bottom thereof to the floor 88, which is also connected to the bottom rail assembly 40.
Preferably, the door 70, the door connection wall 84, and the lock wall 86 are between approximately 1.4 and approximately 2 meters (4.5 to 6.6 feet) high, in particular, 1.6 meters (63 inches) high. In the preferred configuration, the top rear rail 26, the door 70, the door connection wall 84, and the floor 88 are between approximately 2.2 and approximately 2.5 meters (7 to 8 feet) wide.
The floor 88 can be one piece and, therefore, be connected at the bottom surface of the bottom rail assembly 40, or, the floor can be in two pieces and, therefore, be connected either at the bottom surface of the bottom rail assembly 40 or at respective sides of the bottom rail assembly 40. When so connected, the doorframe 80 provides a very strong structure that, when connected to at least one of the body 10 and the frame 20, can at least support the weight of the door 80.
A moving connection 100 pivotally connects the door 70 to the door connection wall 84 so that the door 70 can swing from an open position to a fully closed position in which the door 70 entirely closes off the partially rounded or hemi-spherical rear opening of the body 10. A preferred embodiment of the moving connection 100 is a set of at least two hinges, as shown in
Preferably, the moving connection 100 allows the door 70 to pivot 270 degrees so that the door can be easily secured to the body 10 or the frame 20, in particular, at an outer side of the left top lateral rail 22.
As shown in
To lock and unlock the door, when an upward force is imparted to front end of the control bar 92 to pivot the control bar counter-clockwise about the lower pivot pin 91, both the counter-catches of the control bar 92 and the follower bar 94 move downward and counter-clockwise. After a sufficient distance is traveled by the counter-catches, the counter-catches are in a position with respect to the catches 78 such that the catches 78 and the counter-catches do not hit one another when the door 70 is closed fully. When closed, a downward force is imparted at the forward end of the control bar 92 to rotate the control bar 92 clockwise and move both of the counter-catches clockwise to engage the catches 78 and, thereby, lock the door 70 closed. Of course, the control bar 92 can be biased by a bias device 101 that continually imparts a downward force on the control bar 92. To allow automatic closure of the door without having to actuate the control bar 92 in any way, the rear-most, upper corner of the counter-catch can be beveled so that, when the door 70 closes and the round pegs of the catches 78 hit the bevel, the pegs act as a cam and the bevel acts as a cam follower to have the pegs displace the counter-catches downward as the pegs move therepast. Thus, after passing the beveled portion, the pegs no longer impart a force downward against the counter-catches and the counter-catches automatically engage the catches 78 due to the bias imparted by the bias device.
After closure, a locking pin can be placed through any hole existing in any portion of the control bar, 92, follower bar 94, or tie rod 96 and through a corresponding coaxial hole in the body 10 or lock wall 86. See, e.g.,
FIGS. 3 to 5 show a first embodiment of the rear bottom end of the bottom rail assembly 40 and the doorframe 80. As shown, the bottom surfaces of the floor 88 have rollers 110 thereon for allowing the container 1 to roll over ground surfaces when moved.
Features are present in some of the embodiments described herein but not others. It should be understood that any feature can be transferred and/or combined with any other feature of the various embodiments to form different configurations of the container 1 according to the invention and the invention should not be limited to the details shown or described.
Claims
1. A roll-off cable system industrial waste container, comprising:
- a frame; and
- a container body: fixedly connected to said frame; and having a rounded bottom defining a container interior for holding industrial waste; and
- a hoist connector connected to at least one of said frame and said container body for connecting said frame and said container body to a pulling device.
2. The container according to claim 1, wherein:
- said frame defines a frame interior; and
- said container body is disposed in said frame interior.
3. The container according to claim 1, wherein said rounded bottom is arched and has no corners.
4. The container according to claim 1, wherein said rounded bottom has a relatively flat bottom portion and rounded sides.
5. The container according to claim 1, wherein said rounded bottom has a relatively flat bottom portion and sides that are partially rounded and partially substantially flat.
6. The container according to claim 1, wherein said body has a front wall and a set of curved body parts connected together in a substantially half-pipe shape.
7. The container according to claim 6, wherein said front wall is one of integral with and fixedly connected to said set of curved body parts.
8. The container according to claim 1, wherein said frame has:
- two top lateral rails;
- a top front rail connected to said two top lateral rails;
- a front rail assembly connected at least to said top front rail;
- a bottom rail assembly connected at least to said front rail assembly, and
- a rear door assembly connected at least to said bottom rail assembly and one of said two top lateral rails.
9. The container according to claim 8, wherein said body has a bottom and at least one side curving up from said bottom towards at least one of said two top lateral rails.
10. The container according to claim 9, wherein said at least one side curves all the way up from said bottom to said at least one top lateral rail.
11. The container according to claim 9, wherein said at least one side curves part way up from said bottom towards said at least one top lateral rail and, then flattens out adjacent said at least one top lateral rail.
12. The container according to claim 9, wherein said at least one side curves approximately half way up from said bottom towards said at least one top lateral rail and, thereafter, travels substantially vertical to said at least one top lateral rail.
13. The container according to claim 1, wherein said interior of said body has inner surfaces and said inner surfaces are substantially smooth.
14. The container according to claim 8, wherein said body defines a top opening fixedly connected to said two top lateral rails and to said top front rail.
15. The container according to claim 8, wherein:
- said body has a trailing edge;
- said bottom rail assembly has a rear end; and
- said rear door assembly is fixedly connected to: said rear end of said bottom rail assembly; and said trailing edge of said body.
16. The container according to claim 8, wherein said door assembly has a door, a doorframe, and a locking assembly.
17. The container according to claim 16, wherein said door is of substantially the same material as said body.
18. The container according to claim 16, wherein said door has an automatically locking latch system.
19. The container according to claim 16, wherein said doorframe has:
- an end plate;
- a door connection wall connected to said end plate;
- a lock wall connected to said end plate; and
- a floor connected to said end plate.
20. The container according to claim 19, wherein:
- said door has an inside surface shape;
- said body has a rear interior edge with an inner shape; and
- said end plate has an exterior shape substantially corresponding to said inside surface shape of said door and an interior shape substantially corresponding to said inner shape of said rear interior edge of said body.
21. The container according to claim 16, wherein said door is movably connected to said door assembly.
22. The container according to claim 16, further comprising a hinge movably connecting said door to said door assembly.
23. The container according to claim 19, wherein said locking assembly is disposed at said lock wall and locks said door at least in a closed position thereof.
24. The container according to claim 15, wherein said bottom rail assembly has:
- two longitudinal beams; and
- a plurality of horizontal beams connected to each of said two longitudinal beams.
25. The container according to claim 24, wherein:
- said body has a bottom area; and
- said two horizontal beams are connected to said body at said bottom area.
26. The container according to claim 24, wherein:
- said two longitudinal beams have forward ends; and
- forward roller assemblies are respectively connected to said forward ends.
27. The container according to claim 15, wherein rear roller assemblies are connected to at least one of said bottom rail assembly and said door assembly.
28. The container according to claim 1, wherein said frame has a rear door.
29. The container according to claim 1, wherein said container body is of a material constructed to hold at least one thousand pounds in said container interior.
30. The container according to claim 1, wherein said material is steel.
31. The container according to claim 1, wherein said pulling device is a roll-off cable system for pulling said frame and said container body onto a truck.
32. An industrial waste container, comprising:
- a frame; and
- a container body: fixedly connected to said frame; and having a rounded bottom defining a container interior of at least 150 cubic feet for holding industrial waste.
33. An industrial waste container, comprising:
- a frame; and
- a container body: fixedly connected to said frame; and having a rounded bottom defining a container interior for holding industrial waste.
34. A method for constructing an industrial waste container, which comprises:
- shaping metal material into a structure having an at least partially curved bottom portion, an open-top, and open ends including a leading end and a trailing end;
- fixing a front wall to the leading end to form a body having a top opening and a rear opening;
- connecting the body to a frame having a rear end to orient the top opening upward and the rear opening towards the rear end; and
- connecting a rear door assembly to at least one of the rear end of the frame and the rear opening to form an open-topped container having at least 150 cubic feet of waste holding space.
35. A method for constructing an industrial waste container, which comprises:
- curving a plurality of metal planks into an approximately rounded shape;
- connecting the curved planks together to form an open-topped and open-ended structure having a leading end, a trailing end, and a rounded bottom;
- fixing a front wall to the leading end to form a body having a top opening and a curved rear opening;
- connecting the body to a frame having a rear end to orient the top opening upward and the curved rear opening towards the rear end;
- connecting a rear door assembly to the rear end of frame and to the rear opening to form an industrial waste container.
36. The method according to claim 35, which further comprises connecting a hoist connector to at least one of the frame, the body, and the rear door assembly for pulling the container with a pulling device.
37. The method according to claim 35, which further comprises:
- providing the frame with two top lateral rails and a top front rail; and
- carrying out the body-frame connecting step by connecting at least a portion of the top opening to the two top lateral rails and connecting the front wall to the top front rail.
38. The method according to claim 37, which further comprises
- providing the frame with a bottom rail assembly; and
- carrying out the body-frame connecting step by connecting the bottom rail assembly to a portion of the body.
39. The method according to claim 38, which further comprises
- providing the frame with a rear door assembly; and
- carrying out the body-frame connecting step by connecting rear door assembly to at least one of the rear opening of the body, the bottom rail assembly and at least one of the two top lateral rails.
Type: Application
Filed: Aug 16, 2004
Publication Date: Mar 17, 2005
Inventor: Evelio Acosta (Sunny Isles, FL)
Application Number: 10/919,043