Patent Grant
9174798
The present disclosure relates generally to vaults for providing an enclosed region beneath a ground surface. More specifically, vaults are provided comprising a locking lid with a cap assembly for securing various electrical, water, communications and other components and systems below grade of ground level.
Subgrade vaults are widely used to provide internal enclosed regions where connections can be made and housed. Classic examples of such connections are the joinder of electrical cables used in street lighting, in telephone and communication systems, and water valves for residential communities and golf courses. Such vaults are generally placed below grade of ground level with their upper surfaces at grade where loads from pedestrians and vehicles, as well as environmental factors such as the presence of precipitation and animals are anticipated. Generally they will be used by and allow access to municipalities, utilities, and other installations where longevity of the vaults, and affordability are important. Although subgrade vaults are typically comprised of precast or poured-in-place concrete, alternative materials such as fiberglass, plastic, and other materials may be used and the present invention is not limited to any given material.
Vault systems and devices are intended for access and interaction with trained professionals who, for example, need to service complex, dangerous, and/or valuable subgrade systems to maintain vital infrastructure. Accordingly, in addition for these devices and systems to withstand various forces and abuse due to environmental conditions, it is desirable to provide systems that allow for general ease of access to the appropriate individuals, while simultaneously preventing unauthorized access. A lid for providing access to an enclosed subgrade region must not only be structurally sound, but must be simple to remove and replace, while reliably holding the lid onto the body when access is not needed.
Subgrade storage systems generally contain and/or provide access to valuable components necessary in performing critical functions and/or with respect to monetary value. In part due to the high commodity prices of metals and other internal components, theft is an increasing problem which is not only expensive but extremely disruptive when communication, electrical or water service is discontinued. Furthermore, improperly secured or physically damaged subgrade systems may present hazardous conditions to passer-bys and professionals alike. Currently known systems fail to provide adequate safety and security measures for preventing and/or deterring unauthorized access to subgrade storage areas.
There has thus been a long-felt but unmet need to provide a subgrade vault system having features adapted for securing at least a lid portion to additional system components, such as a vault cap. The following references relate to the field of subgrade storage vaults and facilities and are hereby incorporated by reference in their entireties: U.S. Pat. No. 4,567,697 to Hahne, U.S. Pat. No. 6,772,566 to Machledt et al., U.S. Pat. No. 6,899,240 to Dang et al., U.S. Pat. No. 7,163,352 to Jurich et al., U.S. Pat. No. 7,385,137 to Burke et al., U.S. Pat. No. 7,467,910 to Lecuyer et al., and U.S. Pat. No. 7,748,926 to Jurich et al.
It is one object of the present invention to provide for an improved subgrade or above grade vault system having locking or selectively securing features to prevent unwanted access to an enclosed region. It is another object of the present invention to provide a concrete enclosure adapted for containing subgrade systems wherein the concrete enclosure comprises a lid which can be secured when the lid is generally in a closed or sealed position, thus preventing unwanted or unauthorized access to contents of the enclosure.
It is another object of the present invention to provide a multiple component system for securing subgrade systems and devices, the system comprising a cap assembly at least partially cast in a material including, but not limited to plastic or concrete, and a substantially rigid locking member secured to a portion of the cap, and a lid adapted for selective securing to the cap.
It is another object of this invention to provide an improved subgrade vault, with cost effective manufactured components to selectively secure an enclosure. In one embodiment components are comprised of a plastic product and/or concrete structure formed to a cap, one or more locking members or clips to join with a bolt or other hardware, to selectively secure a lid to the cap.
In various embodiments, the present invention comprises a cap adapted to be connected or secured to a concrete box or structure for containing, enclosing, and/or securing subgrade utility components. In one embodiment, the present invention comprises a plastic cap formed to or connected with a quantity of concrete, the concrete having a height extending downwardly from the plastic cap, a generally polygonal or rectangular shape, and a predetermined thickness. As used herein, a “rectangle” or “rectangular” object refers to any quadrilateral with four right angles, including square and non-square rectangles. In one embodiment, the quantity of concrete comprises a top portion to which a cap is formed or attached and a bottom portion that is generally open. In an alternative embodiment, the present invention comprises a quantity of concrete comprising four side walls and a bottom portion, such that the device comprises a fully contained enclosure when a lid, as will be described in further detail, is placed on or connected to a top portion.
In various embodiments, precast concrete is used to form portions of a subgrade storage vault, as precast concrete is generally known to provide a substance that is simultaneously rigid and strong enough to accommodate various compressive and shear loading that a subgrade vault is likely to experience. However, it is to be expressly understood that the present invention is not limited to embodiments comprising precast concrete. Indeed, any rigid material determined to be economically feasible for use in subgrade storage vaults may be used to form the body and/or peripheral walls of a lockable subgrade storage vault in accordance with the present invention. For example, in various embodiments, a lockable subgrade vault structure is provided wherein various components comprise cellular concrete, polyethylene, polypropylene, polyvinyl chloride, nylon, polycarbonate, aluminum, acrylonitrile butadiene styrene, acetal, acrylic, epoxy, fluorocarbons, lonomer, polybutylene, polyester, polystyrene, silicone, various combinations thereof and various similar materials thereto.
In various embodiments, the present invention comprises a subgrade storage facility wherein a molded plastic cap is first formed and a main body comprising four walls is formed or extruded therefrom. In a particular embodiment, the present invention comprises an injection molded, rotomolded or blow-molded plastic cap and a main body portion comprises precast concrete and a method of making the same. In one embodiment, the present invention comprises an injection molded cap adapted for receiving a locking device, wherein at least a portion of the locking device is secured to the cap and/or body upon extrusion or creation of the body portion from the cap. For example, a cap may be provided comprising four sides, each of said four sides having a width approximately corresponding to a width of a sidewall of a main body portion to be extruded or extended therefrom. Prior to extrusion of a sidewall, a locking bracket or element may be positioned on a cap such that a portion of the locking element is positioned within an area defined by the width(s) of the cap and at least a portion of the locking element disposed within an area corresponding to the open vault portion of the device. Thus, in at least one embodiment, a locking element is secured to a cap and/or main body portion through the creation or extrusion of the main body portion with at least a portion of the locking element remaining accessible for user interaction (e.g. securing and locking activities) through an open top and/or bottom portion of the device.
In various embodiments, a locking member comprises one or more apertures for receiving and securely attaching the locking member to additional components. For example, in one embodiment, a locking member comprises at least one aperture which receives a quantity of concrete and allows concrete to harden or cure in, around, and/or through the locking member. Thus, in various embodiments, a rigid connection between a quantity of concrete and a locking member is obtained, the connection generally being stronger than simply layering or sandwiching a locking member between two regions of concrete. Similarly, apertures may be provided on a locking member for receiving one or more portions of a cap member. For example, a cap member may be provided with pre-formed spikes or extensions which may be placed through portions of a locking member, thus preventing various movements of the locking member with respect to the cap and enhancing the connection between components.
In various embodiments, a locking element of the present invention comprises a rigid member, such as a metallic bar or wedge shaped feature. In one embodiment, the locking element comprises a rigid member adapted for being placed in and secured to one or more corners of a subgrade enclosure. For example, a rigid locking member may be disposed in and secured to a corner of a bottom portion of a plastic cap, such that at least a portion of the locking member overlaps or resides upon a portion of the cap and at least a portion of the locking member spans an open center portion of the cap. Thus, in one embodiment, the present invention comprises a locking member that spans a distance between generally perpendicular sides of a cap.
In one embodiment, a locking member of the present invention comprises a threaded through-hole for receiving a fastener. Obviously, locking features such as threaded through-holes should preferably be disposed in a portion of the locking member that is to be positioned within an open center (i.e. user accessible) portion of the vault. In an alternative embodiment, the present invention comprises a rigid member having a through-hole, the rigid member adapted for receiving a clip or additional component having one or more threaded through-holes. Accordingly, in one embodiment, a locking member is constructed of a minimal amount of material wherein an additional threaded component is adapted to be placed on the locking member, the threaded component comprising the appropriate thickness for a female threaded portion and thereby reducing the need for raw materials and associated cost of the device. In various embodiments, a threaded female portion is adjustable along a length of the locking member. For example, in one embodiment, a plurality of apertures are provided along a length of a locking member, each of the apertures capable of receiving a clip nut, or similar device for receiving a fastener.
It is to be expressly understood that various locking members may achieve objects of the present invention and, as such, the present invention contemplates numerous variations of the locking members as shown and described herein. These variations, as will be recognized by one of ordinary skill in the art include, but are not limited to variations within size, shape, orientation, material, and quantity of locking members that are provided. For example, although various figures included herewith depict a locking member having a first end and a second end disposed within a volume of concrete, it is contemplated that a locking member alternatively comprises a cantilever type mechanism secured to a main body portion and/or cap by only one end of the mechanism. Similarly, the present invention is not confined to vaults having locking members disposed proximal to a corner of a cap. Rather, a locking member may be disposed and extend inwardly from any number of points along an interior of a cap. It will also be expressly understood that various embodiments of locking members as described herein may be provided either in isolation or in combination with various other contemplated locking members or features.
In various embodiments, the present invention comprises one or more locking members comprising various different polygonal or round shapes. Thus, it is to be recognized that locking members of the present invention for use in subgrade vaults are not necessarily comprised of rectangular or evenly regularly shaped objects. Indeed, flanges or protrusions disposed along a shoulder of a cap may comprise a variety of different shapes, as may locking members such as bars secured to a cap and/or main body portion of the vault.
Locking members of the present invention may be comprised of any material known to provide sufficient strength properties and combinations thereof. Accordingly, although a preferred embodiment contemplates a metal locking mechanism disposed within a concrete main body portion and a plastic cap, the present invention is not limited to any such embodiment.
In various embodiments, the present invention comprises a lid adapted to be secured to a cap. In one embodiment, a lid of the present invention comprises a combination of plastic and a concrete material, wherein an outer portion of the lid is generally comprised of plastic to accommodate stress concentrations at specific locations and generally prevent or reduce the risk of chipping and cracking at corner and perimeter regions of the lid. An inner or central portion is generally comprised of a concrete material, such as Portland cement or precast concrete adapted for accommodating anticipated static and dynamic loading known to be experienced by a subgrade vault with a lid.
In one embodiment, a lid of the present invention comprises at least one aperture or through-hole and an optional cap, lid, or cover, for selectively sealing the same. The aperture or through-hole is formed such that a locking member is accessible by a fastening member, for example, through the aperture at least when the lid is placed on the cap in a closed position. Accordingly, when a lid is placed on or within a cap of the present invention, an enclosed vault region is established, with access to a locking member(s) provided through an aperture formed in the lid. Thus, when a lid is placed upon a subgrade vault, the lid may be further secured and/or locked to additional components via one or more fasteners. For example, in one embodiment, once a lid is placed upon a cap, one or more apertures formed in the cap provide above-grade access for a threaded fastener such as a bolt to be secured to a female threaded portion secured to a cap/main body portion as previously described. In various embodiments, cap or cover features are provided to cover or conceal apertures and locking hardware formed in a lid, thus providing a generally flush lid surface for improving aesthetic and safety characteristics of the lid.
In various embodiments, unauthorized access to an internal volume of a subgrade vault is prevented or at least minimized through the use of tamper-proof fasteners. For example, lids of the present invention may be secured to caps, vaults, and/or additional components through the use of one or more tamper-proof fasteners. One of skill in the art will recognize that a wide variety of known or custom-made tamper-proof fasteners may be employed in embodiments of the present invention, such that an ordinary passerby or potential pillager is unlikely to possess the requisite tool for removing/loosening the fastener. By way of example only, tamper-proof fasteners suitable for use in the present invention include, but are not limited to those available through Tamperproof Screw Company, Inc.
In one embodiment, the present invention comprises a subgrade vault having a lid with a single aperture formed in a corner of the lid and corresponding to a locking member formed in a cap/vault portion for securing the lid to the vault. In an alternative embodiment, the present invention comprises a lid having a plurality of apertures in a plurality of corners of the lid, each of the apertures corresponding to a subgrade locking mechanism for securing the lid to the cap/vault.
In various embodiments, the present invention comprises a lid with one or more apertures and corresponding subgrade locking mechanism(s) disposed in a central region of the lid and vault opening. For example, in a particular embodiment, the present invention comprises a lid with an aperture disposed in a central region of the lid and a locking mechanism spanning across a dimension of the cap and providing a point of attachment for the lid within a central region of the lid, or alternatively on one or more edges of the cap.
In various embodiments, the present invention comprises one or more apertures having removable features for selectively viewing or accessing a subgrade feature, such as a meter. For example, in one embodiment, a lid is provided having a removable feature adapted for being selectively removed from a remainder of the lid such that subgrade features, such as a water meter, may be read without the need for complete removal of the lid. In various embodiments, the removable feature or features comprise pry-off lids or caps adapted to be removed and applied with relative ease to observe or read one or more subgrade features. In alternative embodiments, caps or lids for observing subgrade features comprise securing features, such as tamper-proof fasteners as previously described.
In various embodiments, subgrade vault lids are provided having one more plates or portions adapted to display information. For example, in one embodiment, a composite plastic and concrete cover is provided having a plastic name plate for displaying general information related to the contents of the vault (e.g. “ELECTRICAL,” “WATER,” “GAS,” etc.)
In one embodiment, a method of forming a subgrade concrete vault is provided comprising: (1) placing a locking member on the underside of a pre-formed plastic cap by aligning pre-formed plastic pins of said plastic cap through the corresponding holes provided in the locking element and applying a force to the locking element; (2) placing the plastic cap and locking member into a precast mold or on a vibrating table with a jig to align the cap with mold; (3) optionally inserting a sizing ring into the plastic cap; (4) pouring a concrete into a mold, wherein at least one boundary of the mold is defined by the cap; (5) verifying that the plastic cap and locking element have not been damaged; (6) placing the product into a kiln and curing the product; (7) removing the product from the kiln and verifying that it is ready to be shipped and/or sold. After forming, a concrete vault is provided with an integral plastic cap which includes a bracket embedded in the concrete vault and which is adapted to receive hardware such as a bolt which secures the lid to the cap and requires a special tool.
In one embodiment, a method of securing a lid to a subgrade concrete vault structure is provided, the method comprising: (1) placing a lid on a cap portion of a subgrade vault; (2) verifying that an aperture of the lid is generally aligned with a threaded aperture of a locking mechanism attached to a the subgrade vault; (3) where an aperture of the lid is not generally aligned with a threaded aperture of a locking mechanism, removing the lid, adjusting the location of the threaded aperture of the locking mechanism, and replacing the lid; (4) inserting and applying torque to a tamper-proof fastener until the fastener secures the lid to the vault via contact between a portion of the fastener with a portion of the lid and threaded attachment to the threaded aperture in the locking mechanism.
In various embodiments, a fastener connects a lid of the present invention to additional components (e.g. caps) based on contact between a head of the fastener and a portion of the lid. In an alternative embodiment, a lid aperture comprises a threaded through-hole through which a fastener is threadably secured.
In various embodiments, a lid of the present invention may be secured directly to a cap portion, such as a shoulder of the cap. For example, in one embodiment, a threaded fastener may be provided through an aperture in the lid and secured or threaded through a shoulder portion of the cap. Preferably, the shoulder portion of the cap to which the fastener and/or lid is secured comprises one or more reinforcing features as shown and described herein. In one embodiment, the shoulder portion of the cap comprises a rigid securing member to provide structure for the shoulder and, in at least one embodiment, female threads for receiving the fastener.
The Summary of the Invention is neither intended nor should it be construed as being representative of the full extent and scope of the present disclosure. The present disclosure is set forth in various levels of detail in the Summary of the Invention as well as in the attached drawings and the Detailed Description of the Invention and no limitation as to the scope of the present disclosure is intended by either the inclusion or non-inclusion of elements, components, etc. in this Summary of the Invention. Additional aspects of the present disclosure will become more readily apparent from the Detailed Description, particularly when taken together with the drawings.
The above-described benefits, embodiments, and/or characterizations are not necessarily complete or exhaustive, and in particular, as to the patentable subject matter disclosed herein. Other benefits, embodiments, and/or characterizations of the present disclosure are possible utilizing, alone or in combination, as set forth above and/or described in the accompanying figures and/or in the description herein below. Further details and other features will become apparent after review of the following Detailed Description and accompanying drawing figures.
Those of skill in the art will recognize that the following description is merely illustrative of the principles of the disclosure, which may be applied in various ways to provide many different alternative embodiments. This description is made for illustrating the general principles of the teachings of this disclosure invention and is not meant to limit the inventive concepts disclosed herein.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the general description of the disclosure given above and the detailed description of the drawings given below, serve to explain the principles of the disclosures.
It should be understood that the drawings are not necessarily to scale. In certain instances, details that are not necessary for an understanding of the disclosure or that render other details difficult to perceive may have been omitted. It should be understood, of course, that the disclosure is not necessarily limited to the particular embodiments illustrated herein.
The present invention provides its benefits across a broad spectrum of endeavors. It is applicant's intent that this specification and the claims appended hereto be accorded a breadth in keeping with the scope and spirit of the invention being disclosed despite what might appear to be limiting language imposed by the requirements of referring to the specific examples disclosed. To acquaint persons skilled in the pertinent arts most closely related to the present invention, a preferred embodiment of the method that illustrates the best mode now contemplated for putting the invention into practice is described herein by, and with reference to, the annexed drawings that form a part of the specification. The exemplary method is described in detail without attempting to describe all of the various forms and modifications in which the invention might be embodied. As such, the embodiments described herein are illustrative, and as will become apparent to those skilled in the arts, can be modified in numerous ways within the scope and spirit of the invention, the invention being measured by the appended claims and not by the details of the specification.
Although the following text sets forth a detailed description of numerous different embodiments, it should be understood that the legal scope of the description is defined by the words of the claims set forth at the end of this disclosure. The detailed description is to be construed as exemplary only and does not describe every possible embodiment since describing every possible embodiment would be impractical, if not impossible. Numerous alternative embodiments could be implemented, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims.
To the extent that any term recited in the claims at the end of this patent is referred to in this patent in a manner consistent with a single meaning, that is done for sake of clarity only so as to not confuse the reader, and it is not intended that such claim term by limited, by implication or otherwise, to that single meaning Finally, unless a claim element is defined by reciting the word “means” and a function without the recital of any structure, it is not intended that the scope of any claim element be interpreted based on the application of 35 U.S.C. §112, sixth paragraph.
While various embodiments of the present disclosure have been described in detail, it is apparent that modifications and alterations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and alterations are within the scope and spirit of the present disclosure, as set forth in the following claims.
Embodiments of the present invention further comprise at least one locking element 10, which is partially mounted or secured within a cap/main body portion and partially extends into an open center portion 8 of the vault. In one embodiment, a locking element comprises a rigid member 12, such as a metal bar having a length wherein at least a portion of the length extends into an area around which concrete is poured and formed. A method of manufacture is contemplated wherein a locking element 10 is placed on or proximal to a cap upon which a concrete main body portion is to be formed. Upon pouring or forming a concrete main portion, the locking member 10 becomes secured to the finished product due to at least a part of the length of the locking element 10 residing in the path of poured concrete and/or concrete being poured through apertures provided in the locking element 10.
As shown in
In various embodiments, lids of the present invention comprise at least one lift interface 22 for providing a point of attachment for various devices design to lift or displace the lid. Lift interfaces 22 may comprise a recess having a rigid member or post adapted for grasping or communication with a lifting device comprising a hook, as will be recognized by one of ordinary skill in the art.
As shown in the embodiments provided in
In various embodiments, a corner feature 100 of the present invention comprises a threaded female member 102 within which a fastener may be placed. In certain embodiments, particularly those where the corner feature 100 is comprised of a concrete material, the corner feature 100 comprises an aperture 102 within which a threaded insert or sleeve may be provided. In one particular embodiment, the corner feature 100 comprises a mass of concrete that provides structural support or a region within which a threaded sleeve may be inserted, the threaded sleeve adapted to receive a fastener for securing a lid. Thus, in various embodiments, a main body portion may be formed with a protrusion or extension of concrete capable of withstanding various loads, such as loads provided by the application of force to the threaded sleeve via a fastener and connected lid.
While
The foregoing discussion of the disclosure has been presented for purposes of illustration and description. The foregoing is not intended to limit the disclosure to the form or forms disclosed herein. In the foregoing Detailed Description for example, various features of the disclosure are grouped together in one or more embodiments for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the following claims are hereby incorporated into this Detailed Description, with each claim standing on its own as a separate preferred embodiment of the disclosure.
Moreover, though the present disclosure has included description of one or more embodiments and certain variations and modifications, other variations and modifications are within the scope of the disclosure, e.g. the use of a certain component described above alone or in conjunction with other components may comprise a system, while in other aspects the system may be the combination of all of the components described herein, and in different order than that employed for the purpose of communicating the novel aspects of the present disclosure. Other variations and modifications may be within the skill and knowledge of those in the art, after understanding the present disclosure. This method of disclosure is intended to obtain rights which include alternative embodiments to the extent permitted, including alternate, interchangeable and/or equivalent structures, functions, ranges or steps to those claimed, whether or not such alternate, interchangeable and/or equivalent structures, functions, ranges or steps are disclosed herein, and without intending to publicly dedicate any patentable subject matter.
This application is a Continuation of and claims the benefit of priority from U.S. patent application Ser. No. 13/294,054, filed Nov. 10, 2011, which claims the benefit of priority of U.S. Provisional Patent Application 61/412,252, filed Nov. 10, 2010, the entire disclosures of which are hereby incorporated by reference in their entireties.
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| Number | Date | Country | |
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| Number | Date | Country | |
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| Number | Date | Country | |
|---|---|---|---|
| Parent | 13294054 | Nov 2011 | US |
| Child | 14486662 | US |
