COLLAPSIBLE FLUID CONTAINMENT BERMS WITH ROTATING SUPPORT BRACKETS
Collapsible fluid containment berms with collapsible sidewalls are disclosed. Support brackets including sidewall support arms may be rotated from lowered positions in which the sidewall is collapsed to raised positions in which the sidewall is generally vertical. The sidewall support arms may be contained in a pocket formed between inner and outer sidewall panels. The support brackets may include bottom legs connected to the rotatable sidewall support arms. The bottom legs may extend generally horizontally outwardly and/or inwardly from the sidewall, and may be contained in sleeves attached to a floor and/or an external skirt of the containment berm. A control strap connected to the sidewall support arms may be used to move the arms between their collapsed positions and their raised positions. A flexible control strap may be pulled to rotate the sidewall support arms around an axis such that the sidewall support arms slide within the sidewall pocket.
This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/771,299 filed Mar. 1, 2013, which is incorporated herein by reference.
FIELD OF THE INVENTIONThe present invention relates to containment berms, and more particularly relates to containment berms having collapsible sidewalls that can be raised and lowered.
BACKGROUND INFORMATIONPortable collapsible liquid containment berms are used to prevent hazardous fluids from entering the environment from the spillage of the fluids during, for example, the loading and unloading of storage containers and transport vehicles, wash-down of equipment and vehicles, and repair/maintenance of equipment and vehicles.
Typically one or more sides of the containment berm can be lowered and laid flat so that the equipment or vehicle can easily enter the containment area. Once the equipment or vehicle is inside, the sidewall(s) are then extended to prevent fluids from escaping. Any leaked, spilt or wash-down fluid is retained within the containment berm and can be pumped out for proper disposal. Once the containment berm is emptied, the sidewall(s) can be lowered to remove the equipment, storage containers or vehicle.
These devices are typically made with a flexible barrier material, such as a rubberized fabric, reinforced PVC or a heavy weight film, and are folded or rolled-up for easy storage and transport. During use, the collection berm must be unfolded/unrolled and the sides extended to a generally vertical position to achieve its fluid retaining capability. To maintain the sidewalls in this generally vertical position, a number of sidewall braces have been employed, for example, as disclosed in U.S. Pat. Nos. 5,316,175; 5,762,233; 6,092,686; and 6,880,720. Since each side brace must be individually manipulated by hand to extend or to lower the sidewalls, the operators must bend over and work their way down the sidewall(s) that need to be raised or lowered.
SUMMARY OF THE INVENTIONAn aspect of the present invention is to provide a containment berm comprising: a floor; at least one collapsible sidewall connected to the floor; and at least one sidewall support bracket comprising a rotatable sidewall support arm structured and arranged to support the sidewall in a raised position, wherein the sidewall support arm is rotatable around an axis substantially perpendicular to a plane of the raised sidewall.
Another aspect of the present invention is to provide a containment berm comprising: a floor; a collapsible sidewall connected to the floor; and multiple sidewall support brackets comprising sidewall support arms structured and arranged to support the sidewall in a raised position, wherein each sidewall support arm is rotatable around an axis substantially perpendicular to a plane of the raised sidewall.
A further aspect of the present invention is to provide a containment berm comprising: a floor; at least one collapsible sidewall; multiple support brackets comprising rotatable sidewall support arms structured and arranged to support the sidewall in a raised position; and a control strap connected to upper ends of the sidewall support arms structured and arranged to force the sidewall support arms into raised positions when an end of the control strap is pulled.
Another aspect of the present invention is to provide a containment berm comprising: a floor; at least one collapsible sidewall connected to the floor comprising an inner sidewall panel, an outer sidewall panel, and a pocket located therebetween; multiple support brackets comprising sidewall support arms at least partially positioned in the pocket; and a control strap at least partially positioned in the pocket and connected to the sidewall support arms structured and arranged to force the sidewall support arms into raised positions when an end of the control strap is pulled.
These and other aspects of the present invention will be more apparent from the following description.
Embodiments of the present invention provide portable collapsible fluid containment berms that eliminate the need to individually manipulate each sidewall support brace or bracket during raising or lowering of the flexible sidewalls. The support brackets for each sidewall comprise arms that are rotatable from a lowered position in which the sidewall is collapsed to a raised position in which the sidewall is generally vertical. The rotatable sidewall support arms of the brackets may be contained in pockets or sleeves on the sidewall and/or between adjacent sidewall layers in embodiments in which the sidewalls comprise two separate sheets of material. The sidewall pockets may be at least as high and wide as the as the length of each sidewall support arm.
In certain embodiments, the support brackets also include bottom legs connected to the rotatable sidewall support arms. The bottom legs may extend generally horizontally outwardly and/or inwardly from the sidewall, and may be contained in close-fitted hinge pockets or sleeves on a bottom or top surface of the floor of the berm and/or an external apron or skirt of the berm. The bottom legs can rotate in the hinge pockets or sleeves, with the rotational axis being generally perpendicular to the sidewall orientation when the sidewall is in its raised position.
In certain embodiments, a series of sidewall support arms may be joined together at or near their top ends with a control strap such as a cable, cord, rod or the like. The control strap may extend externally from the sidewall of the berm, e.g., from the first and last support brackets in a series, and a loop or handle may be attached to the free ends of the strap. The control strap may be used to change the orientation of the sidewall support arms within the sidewall pockets. For example, pulling on a flexible control strap rotates the sidewall support arms around an axis such that the sidewall support arms slide within the sidewall pocket(s). When the sidewall is to be collapsed, the sidewall support arms are moved from their generally vertical positions to their generally horizontal positions. When the sidewall is to be raised, the flexible control strap may be pulled in the opposite direction to rotate and slide the sidewall support arms in the sidewall pocket(s) from their generally horizontal collapsed positions to their generally vertical raised positions.
One or more of the sidewalls 20 may include an inner sidewall panel 22 and an outer sidewall panel 24 forming a continuous or discontinuous pocket 23 therebetween. For purposes of illustration,
As shown most clearly in
In the collapsed position shown in
As shown in
In certain embodiments, each sidewall support bracket 30 may also include a bottom leg 34 that may be generally horizontal. For example, the sidewall support arm 32 and bottom leg 34 may have a fixed orientation in relation to each other, such as a generally L-shaped or T-shaped configuration, as more fully described below. The sidewall support arm 32 and bottom leg 34 may be integrally formed from the same piece of material, e.g., by bending a rod, bar or tube of metal or plastic material, or by molding plastic material to the desired shape. Alternatively, separate sidewall support arm 32 and bottom leg 34 pieces may be fastened together by any suitable means such as welding, mechanical fasteners, adhesives and the like. The cross sections of the bottom legs 34 may be generally round to allow for easy pivoting with a hinge sleeve or pocket 16, but other cross-sectional shapes such as squares and hexagons, will work as long as they can pivot in the hinge sleeve 16. The cross sections of the sidewall support arms 32 may be the same or different from the cross sections of the bottom legs 34. For example, the sidewall support arms 32 and bottom legs 34 may both have round cross sections. Alternatively, the sidewall support arms 32 may have flattened cross sections such as rectangular, oval, elliptical or the like. The sidewall support arms 32 and bottom legs 34 may have typical diameters or widths of from 0.2 to 1 inch or more, for example, from 0.25 to 0.5 or 0.75 inch.
The bottom leg 34 of the support bracket 30 is aligned with the axis of rotation A in embodiments shown in the figures. As shown in
As shown in
In certain embodiments such as shown in
In certain embodiments, the bottom leg 34 may be generally T-shaped as shown in
In certain embodiments, the bracket 30 does not require a rotatable bottom leg 34, in which case the rotatable sidewall support arm 32 may be pivotally attached to any suitable support structure that allows the sidewall support arm 32 to rotate between its collapsed and raised positions, while providing sufficient bracing support for the sidewall 20. For example, the support brackets may be formed of two separate pieces that are pivotally joined to each other, e.g., a substantially horizontal stationary floor member to which a rotatable sidewall support arm is attached. Since the bottom portion of a pivoting two-piece design may not need to rotate within a hinge pocket, the bottom horizontal leg can be a significantly different shape, such as a plate, than the rotatable sidewall support arm 32. In certain embodiments, the bottom hinge pocket 16 may be eliminated and the bottom leg 34 of the support bracket 30 may be joined directly to the floor and/or external skirt of the containment berm.
As shown in
As shown in
One method to string the sidewall support arms 32 together is run a control strap 40 in the form of a vinyl coated cable through the hole 36 in the upper portion of each arm 32, and then to place cable crimps 44 in the form of sleeves onto the cable on both sides of each arm 32 to lock it in position. To ensure that the arms 32 lay flat when collapsed, the crimps 44 may be located a slight distance away (e.g., about 1 inch) from the arm 32 to enable the cable to bend out of the way. This results in some cable play, which is not an issue. If the crimps 44 are placed too close to the arm 32, the cable may not be able to bend until it is clear of the crimps, thus keeping the arms 32 from lying flat.
As shown in
As illustrated in
Whereas particular embodiments of this invention have been described above for purposes of illustration, it will be evident to those skilled in the art that numerous variations of the details of the present invention may be made without departing from the invention as defined in the appended claims.
Claims
1. A containment berm comprising:
- a floor;
- at least one collapsible sidewall connected to the floor; and
- at least one sidewall support bracket comprising a rotatable sidewall support arm structured and arranged to support the sidewall in a raised position, wherein the sidewall support arm is rotatable around an axis substantially perpendicular to a plane of the raised sidewall.
2. The containment berm of claim 1, wherein the sidewall support arm travels in a plane substantially parallel with the plane of the raised sidewall.
3. The containment berm of claim 1, wherein the sidewall comprises a pocket, and the support arm is movable in the pocket when it rotates around the axis of rotation.
4. The containment berm of claim 3, wherein the sidewall comprises an inner sidewall panel and an outer sidewall panel, and the pocket is located between the inner and outer sidewall panels.
5. The containment berm of claim 4, wherein the inner and outer sidewall panels are substantially coextensive with each other.
6. The containment berm of claim 1, wherein the sidewall support bracket further comprises a bottom leg connected to the sidewall support arm.
7. The containment berm of claim 6, wherein the bottom leg and sidewall support arm are generally L-shaped.
8. The containment berm of claim 6, wherein the bottom leg and sidewall support arm are generally T-shaped.
9. The containment berm of claim 6, wherein the bottom leg is connected to the floor.
10. The containment berm of claim 9, wherein the bottom leg is rotatably mounted on the floor by a hinge sleeve attached to the floor and having sleeve opening receiving at least a portion of the bottom leg.
11. The containment berm of claim 10, wherein the hinge sleeve is fastened to a bottom surface of the floor.
12. The containment berm of claim 6, wherein the bottom leg is rotatably mounted on an external skirt extending outwardly from the sidewall in a generally horizontal direction.
13. The containment berm of claim 1, further comprising a control strap connected to the sidewall support arm structured and arranged to force the sidewall support arm into a raised position when an end of the control strap is pulled.
14. The containment berm of claim 13, wherein the control strap is structured and arranged to force the sidewall support arm into a collapsed position when an opposite end of the control strap is pulled.
15. The containment berm of claim 1, wherein the sidewall comprises a stop member structured and arranged to prevent the sidewall support arm from rotating substantially past a generally vertical raised position when the sidewall support arm is rotated from a generally horizontal lower position to the raised position.
16. The containment berm of claim 15, wherein the stop member comprises a welded portion between an inner sidewall panel and an outer sidewall panel of the sidewall.
17. A containment berm comprising:
- a floor;
- a collapsible sidewall connected to the floor; and
- multiple sidewall support brackets comprising sidewall support arms structured and arranged to support the sidewall in a raised position, wherein each sidewall support arm is rotatable around an axis substantially perpendicular to a plane of the raised sidewall.
18. The containment berm of claim 17, wherein each sidewall support arm travels in a plane substantially parallel with the plane of the raised sidewall.
19. The containment berm of claim 17, wherein the sidewall support arms travel in at least one pocket formed in the sidewall.
20. The containment berm of claim 19, wherein the sidewall comprises an inner sidewall panel and an outer sidewall panel, and the at least one pocket is located between the inner and outer sidewall panels.
21. The containment berm of claim 17, wherein each sidewall support bracket further comprises a bottom leg connected to the sidewall support arm.
22. The containment berm of claim 17, further comprising a control strap connected to the sidewall support arms structured and arranged to force the sidewall support arms into raised positions when an end of the control strap is pulled.
23. The containment berm of claim 22, wherein the control strap is structured and arranged to force the sidewall support arms into collapsed positions when an opposite end of the control strap is pulled.
24. A containment berm comprising:
- a floor;
- at least one collapsible sidewall;
- multiple support brackets comprising rotatable sidewall support arms structured and arranged to support the sidewall in a raised position; and
- a control strap connected to upper ends of the sidewall support arms structured and arranged to force the sidewall support arms into raised positions when an end of the control strap is pulled.
25. The containment berm of claim 24, wherein the control strap passes through a hole in each of the sidewall support arms.
26. The containment berm of claim 25, wherein the strap can slide a limited distance in each of the holes.
27. The containment berm of claim 24, further comprising at least one crimp on the control strap structured and arranged to contact at least one of the sidewall support arms.
28. The containment berm of claim 24, further comprising opposing crimps on the control strap located on opposite sides of one of the sidewall support arms, wherein one of the crimps contacts the sidewall support arm when the strap is pulled to rotate the sidewall support arm into its raised position, and the other crimp contacts the sidewall support arm when the strap is pulled to rotate the sidewall support arm into a lower collapsed position.
29. The containment berm of claim 24, wherein the sidewall support arm is rotatable around an axis substantially perpendicular to a plane of the raised sidewall.
30. A containment berm comprising:
- a floor;
- at least one collapsible sidewall connected to the floor comprising an inner sidewall panel, an outer sidewall panel, and a pocket located therebetween;
- multiple support brackets comprising sidewall support arms at least partially positioned in the pocket; and
- a control strap at least partially positioned in the pocket and connected to the sidewall support arms structured and arranged to force the sidewall support arms into raised positions when an end of the control strap is pulled.
Type: Application
Filed: Feb 28, 2014
Publication Date: Sep 4, 2014
Inventors: Robert J. Starr (Tyrone, PA), Matthew A. Romito (State College, PA), Mark S. Woytowich (State College, PA), Dane R. Jackson (Port Matilda, PA)
Application Number: 14/193,954
International Classification: B65D 37/00 (20060101);