Partially Ballasted Shelving Unit
The invention is directed to a partially ballasted shelving unit having a hollow body and plurality of shelves. A plurality of interconnected ballast chambers formed in the open body provide a ballast holding configuration that when partially filled with a ballast material provides a path for the ballast material to flow from one ballast chamber to another when the shelving unit is reoriented from a vertical orientation to a tipped orientation. The flowing ballast material causing the center of gravity to move when the shelving unit is lifted or moved.
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This application is a continuation of co-pending U.S. Provisional Application Ser. No. 61/929,774 filed Jan. 21, 2014 and claims the benefit of the filing date of said co-pending provisional Application Ser. No. 61/929,774.
FIELD OF THE INVENTIONThe present invention relates generally to furniture for use in intensive use facilities and institutional settings such as hospitals, military housing, prisons, jails, detention centers and psychiatric facilities. More particularly, the present invention relates to a partially ballasted shelving system for movable installations.
BACKGROUND OF THE INVENTIONModular furniture such as chest of shelves, beds and nightstands may designed for use in residential area to hold belongings near or around a bed or chair. Facilities having large quantities of people who may have special needs require furniture designed for intensive use safety and durability. Intensive use furniture may have strong design features to hold up to continuous use by people such as inmates, large and smallb Assembled furniture may present certain hazards in use in intensive use settings where furniture components and fasteners may be removed and turned into weapons. Plastic and fiberglass construction has replaced wood and metal by its ability to be formed into a unitary three-dimensional shapes without external fasteners. Furthermore, such molded furniture may have hollow chambers for to reduce weight and material usage. Such hollow chambers may be filled with structural foam or ballast material. Fiberglass and plastic is generally more easily made aesthetically appealing than steel or wood, and more resistant to damage. Wood furniture, for example may have problems with cracking, warping and joints loosening or absorption of moisture resulting in rot, mold or bacterial growth. Wood, metal or fiberglass furniture is made to order or in small quantities due to the complexity and labor involved.
Furniture in intensive use settings may be designed to blend into surrounding decorations by matching colors or design features. The furniture may be arranged in place and moved to adapt to rearrangement or for cleaning operations such as hose or scrub down. Intensive use furniture may be ballasted or bolted directly to the floor or walls to reduce rearranging, tipping or moving furniture. Securing the furniture to the floor or ballasting to weight the furniture reduces safety concerns by visitors and staff resulting in a safer environment. When the staff must be able to move furniture for cleaning or rearranging, ballasting may be used to increase the weight of the furniture making it difficult but not impossible to move. However, even ballasted, heavier furniture may still be lifted by a strong person and moved.
Therefore, it is desirable to provide a modular molded furniture design having a single piece molded body adapted as a shelving unit supported on a horizontal surface such as a floor by feet or casters. The furniture being of unitary design and manufacture to reduce assembly fasteners and further having a plurality of ballast chambers in the hollow body. The plurality of ballast chambers interconnected to allow a flowable ballast material to flow by force of gravity when the vertical orientation of the shelf unit is changed by tipping or trying to lift the shelf unit. The flowing ballast material may change the center of gravity of the shelf unit making the shelf unit unwieldy and difficult to throw or carry.
BRIEF SUMMARY OF THE INVENTIONA first embodiment of the present invention is directed to a modular furniture system for use in demanding environments, comprising a rotationally molded (referred to hereinafter as (roto-molded) semi rigid unit having a one piece hollow body comprising an integral ballast chamber, a plurality of feet for engaging a bottom panel and a top panel. The integral ballast chamber may further comprise a first side ballast chamber extending from the top panel to the bottom panel and from front to back, a second side ballast chamber extending from the top panel to the bottom panel from the front to the back being generally parallel to and of similar size with the first side ballast chamber and a back ballast chamber extending from the top panel to the bottom panel and interconnected to the first side ballast chamber to the second side ballast chamber. The back ballast chamber in fluid communication with the first and second side ballast chambers and generally oriented perpendicular to each of the first and second side ballast chambers. Shelves may be integrally molded into the unit between the first and second side chambers and the back chamber.
The shelves may be hollow forming individual shelf ballast chambers having fluid communication channels between each of the side and back ballast chambers. The ballast material such as sand, pea gravel or water is placed in the ballast chamber by a closable ballast port formed in the hollow body. The port may be sealed by spin welding a plug in the port to hermetically seal the ballast chamber The port may be located on the bottom of the ballast chamber. Ballast material is placed in the ballast chamber in a predetermined volume to partially fill the hollow body leaving an air chamber portion adjacent the top panel of the ballast chamber while gravity urges the ballast material into a bottom ballasted portion adjacent the bottom panel.
The semi-rigid unit may be formed of a resilient material having scratch and graffiti resistant surfaces. The bottom panel may be disposed on the bottom surface of the bottom shelf and adapted to engage a floor or supporting surface. The ballast port formed thereon may be more tamper resistant. The ballast port maybe molded or drilled into the bottom surface to provide an opening for inserting the ballast material. Coincidentally, a ballast port may be adjacent to and aligned with one or more corners whereby the spin welded plug welded in the ballast port seals the ballast port and serves as a foot formed on the bottom surface. Alternatively, the bottom surface may be adapted to receive casters to provide easy movement of the unit. Threaded fasteners may be insert molded into the hollow body thereby adapting the bottom surface to receive casters, floor attachment brackets or tamper resistant glides.
The ballast chamber may have several interconnected ballast chambers allows the ballast material to flow from one ballast chamber to another. In the event that a person tries to lift the unit. This shifting of the ballast material causes a shifting of a center of gravity and movement of the air chamber portion making the unit awkward to hold, carry or lift. This unit is designed to be used in facilities where people who have special needs are housed. In the event that these people and may have an emotional or physical problem, the moving center of gravity and this unit prevents it from being lifted are thrown.
Alternatively, the unit may have structural foam inserted into the hollow cavities forming ballast chambers to increase the rigidity of the unit. The structural foam such as flexible polyurethane foam may be treated with flame retardant chemicals to reduce danger in case of a fire. The partially filled open chest may be configured as a two shelf nightstand sized unit or may have three or more shelves to be used as a storage unit for books, clothes etc.
The above description sets forth, rather broadly, the more important features of the present invention so that the detailed description of the preferred embodiment that follows may be better understood and contributions of the present invention to the art may be better appreciated. There are, of course, additional features of the invention that will be described below and will form the subject matter of claims. In this respect, before explaining at least one preferred embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of the construction and to the arrangement of the components set forth in the following description or as illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which form a part of this application. The drawings show, by way of illustration, specific embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention.
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Although the description above contains many specifications, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the embodiments of this invention. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents rather than by the examples given. Further, the present invention has been shown and described with reference to the foregoing exemplary embodiments. It is to be understood, however, that other forms, details, and embodiments may be made without departing from the spirit and scope of the invention which is defined in the following claims.
Claims
1. A partially ballasted shelving unit having a plurality of shelves, each one of the plurality of shelves generally parallel to each other one of the plurality of shelves, each one of the plurality of shelves having a generally horizontal orientation, the partially ballasted shelving unit comprising:
- a hollow body having a ballast chamber, the ballast chamber having an air space portion and a ballast portion
- a ballast material in the hollow body, the ballast material having a predetermined ballast volume.
2. The invention of claim 1 wherein the ballast chamber further comprises a plurality of interconnected ballast chambers.
3. The invention of claim 2, further comprising a ballast port in the hollow body, the ballast port in fluid communication with one of the plurality of ballast chambers, a ballast port plug sealingly in the ballast port.
4. The invention of claim 1, further comprising a bottom panel on the partially ballasted shelving unit, a plurality of feet on the bottom panel, the plurality of feet disposed to engage the horizontal surface.
5. The invention of claim 2, wherein the plurality of ballast chambers further comprise a first side ballast chamber and a second side ballast chamber, the first side ballast chamber in fluid communication with the second side ballast chamber.
6. The invention of claim 5 wherein the plurality of ballast chambers further comprises a back ballast chamber, the back ballast chamber in fluid communication with the first side ballast chamber.
7. The invention of claim 6, wherein the back ballast chamber is further in fluid communication with the second ballast chamber, whereby when the shelving unit is moved from a vertical orientation to a tipped orientation the ballast material flows between the first side, second side and back ballast chambers.
8. The invention of claim 1 further comprising a plurality of casters on the hollow body, the casters disposed to engage the floor.
9. The invention of claim 1 wherein the hollow body further comprises a first side panel, a second side panel, a back panel, a front panel, a top panel and a bottom panel, the first side panel spaced from and generally parallel to the second side panel, the front panel spaced from and generally parallel to the back panel, the first side panel connected to the front panel and the back panel, the first side panel further connected to the top panel and the bottom panel, each of the plurality of shelves connected between the first and second side panels, a first side ballast chamber in the first side panel, a second side ballast chamber in the second side panel, the first side ballast chamber in fluid communication with the second side ballast chamber.
10. The invention of claim 9 further comprising a back ballast chamber in the back panel, the back ballast chamber in fluid communication with the first side ballast chamber.
11. The invention of claim 1 wherein the ballast chamber defines an open volume, the ballast material further comprises a ballast volume, the ballast volume being between 40% and 60% of the open volume.
12. An partially ballasted shelving unit comprising:
- a hollow body, the hollow body having a shell surrounding an open interior, the hollow body having a ballasted portion and an air space portion, a flowable ballast material in the ballasted portion, a ballast port formed in the hollow body, ballast plug in the ballast port;
- a plurality of feet mounted on the hollow body.
13. The invention of claim 12, wherein the hollow body further comprises a back panel and a first side panel, the back panel attached to the first side panel, the back panel further comprises a back ballast chamber in the hollow body, the first side panel further comprises a first side ballast chamber in the hollow body and the first side ballast chamber in fluid communication with the back ballast chamber, the first side panel in a generally perpendicular orientation to the back panel.
14. The invention of claim 13, wherein the hollow body further comprises a second side panel attached to the back panel, the second side panel comprising a second side ballast chamber in fluid communication with the back ballast chamber and the first side ballast chamber.
15. The invention of claim 14 wherein the first side panel is spaced from the second side panel, the first side panel in a generally parallel orientation to the second side panel, the back panel between the first side panel and the second side panel, the back panel generally perpendicular to each of the first and second side panels.
16. The invention of claim 12, further comprising a shelf ballast chamber in one of the plurality of shelves, the shelf ballast chamber in fluid communication with the back ballast chamber.
17. The invention of claim 12 wherein the shell further comprises an outside surface and an inside surface, the hollow body further comprises a ballast port in the shell formed by material removed from the shell to form an opening from the outside surface to the inside surface, the ballast port in fluid communication open interior.
18. A partially ballasted shelving unit having a plurality of shelves, the partially ballasted shelving unit comprising:
- a hollow body, the hollow body having a top panel, a bottom panel, a back panel, a first side panel, a second side panel and an open front, the back panel attached to the first side panel and the second side panel, the back panel connected to the top panel and the bottom panel, the back panel having a back ballast chamber;
- a flowable ballast material in the back ballast chamber, the flowable ballast material in a ballast portion of the back ballast chamber,
- an airspace portion in the back ballast chamber void of flowable ballast material;
- a movable center of gravity wherein, the center of gravity moves by gravity urging the flowable ballast material within the back ballast chamber when the shelving unit is moved from a vertical orientation to a tipped orientation.
Type: Application
Filed: Jan 21, 2015
Publication Date: Jul 23, 2015
Applicant: THE NORIX GROUP (West Chicago, IL)
Inventor: Brian Moon (Sycamore, IL)
Application Number: 14/602,264