Patent Application
20120096906
The present invention relates generally to a lock receptacle assembly and more particularly to a barrel lock receptacle assembly that includes a tamper resistance lock receptacle.
Utilities, such as gas, are provided to customers through lines that include valves. These valves, which are commonly referred to as “stops” or “cocks,” are used to control the flow of gas through the line. Such valves are well known and generally include a body portion having an inlet and outlet that are separated by a rotatable plug. The plug has a handle or knob that may be rotated to control fluid flow.
As will be appreciated, it is generally desirable to secure such valves so that they cannot be opened to provide gas to an unauthorized customer. Typically, securing such valves involves partially enclosing the valve with a shroud or cover so that the valve cannot be accessed. The cover is secured in place over the valve with, for example, a barrel lock.
In a known lock assembly, a protective cover is secured over a gas valve with a post or pin that includes a barrel lock receptacle. The pin is secured to the protective cover by the barrel lock and a cap. In particular, the barrel lock secures the cap to the pin and prevents removal of the protective cover from the valve. While such assemblies are generally effective, they may present durability issues when tampered with. For example, a pry bar may be used to put force directly on the balls of the barrel lock within the pin. If enough force is applied, the balls of the barrel lock may shear or deform allowing the cap, pin and protective cover to be removed.
As will be appreciated, a lock assembly that provides an enhanced degree of tamper resistance is desirable.
It is an object of the present invention to provide a lock receptacle assembly.
It is an additional object of the present invention to provide a lock receptacle assembly that is highly tamper resistant.
It is an additional object of the present invention to provide a lock receptacle assembly that is easy to install and remove.
It is an additional object of the present invention to provide a lock receptacle assembly that may be easily manufactured.
An embodiment of the inventive lock receptacle assembly includes a body portion having a first end that includes a bore configured to receive a lock, an end cap removably securable to the first end of the body portion. The end cap having a through bore to allow passage of the lock, such that, when assembled, the lock can lock the end cap and the body portion together. The end cap interlocks with the first end of the body portion so that there is substantially no load on the lock when axial force is applied to the assembly.
An addition embodiment of the present invention is a valve lock assembly that includes a cover configured to be placed over a utility valve, the cover having two opposed side-walls each of which includes an aperture. The embodiment further includes a lock receptacle assembly having a body portion and an end cap, the body portion is configured to be placed through each of the cover apertures to prevent removal of the cover from a utility valve. The assembly further includes a lock for selectively securing the body portion to the end cap when assembled. The end cap interlocks with the body portion so that there is substantially no load on the lock when axial force is applied to the assembly.
The cap 14 has a through bore 20 that allows the barrel lock 22 to pass through the cap 14 and into the post bore 16 to secure the post and cap together. As shown, the cap 14 and pin have shoulder portions 23 that prevent movement of the assembly 10 relative to the walls 24 of the cover. While such assemblies are generally effective, when pried with a pry bar, force F is directed to the balls of the barrel lock. As will be appreciated, in certain circumstances it may be possible for the balls 19 to shear or deform against the annular recess 18 allowing the cap 14 to separate from the post 12 and the cover to be removed from the valve. As discussed below, an embodiment of the present invention addresses the potential issue.
Turning now to
More specifically, the assembly 30 includes a body portion 32. The body portion 32 has a first end that includes a bore 36 for receiving the barrel lock 52. The bore 36 includes a recess 38 for the balls 35 of the barrel lock 52. The first end of the body portion 32 also includes a channel 42 having a reduced profile or diameter if the body is cylindrical. The channel 42 is formed in the body portion 32 such that it creates a shoulder 40, which interlocks with the end cap 34 when assembled as described herein.
The body portion 32 also includes a second opposite end, which features a flange 48. The flange 48 abuts against a side-wall 50 of a cover 60. The flange 48 prevents passage of the body portion 32 through an aperture in the side-wall 50 to secure the cover 60 over a valve 70.
As stated, the assembly 30 also includes an end cap 34. The end cap 34 has a though bore 46 that allows the barrel lock 52 to be inserted through the cap 34. The though bore 46 of the end cap 34 further includes a lip 44 that mateingly engages the shoulder 40 of the body portion 32 to interlock the end cap 34 and body portion 32.
The end cap 34 also features an open mounting aperture or slot 37 formed in a side of the cap 34. The mounting slot 37 is configured to receive the channel 42 and shoulder 40 of the body portion 32 such that the lip 44 mateingly engages the shoulder 40. The barrel lock is then placed through the end cap 34 and into the body 32 and secured in place by having the balls 35 extend into the recess 38.
In use, the cover 60 is first placed over a valve 70. The body portion 32 is the inserted through an opening or aperture in the side wall 50 of the cover 60 until the flange 48 abuts the side-wall and the first end of the body 32 extends through an aligned aperture in the opposite side-wall 50 of the cover 60. The end cap 34 is then placed on the body portion 32 and locked in place via the barrel lock 52.
Importantly, when the aforementioned embodiment is pried with a pry bar, as illustrated in
Referring now to
In either of the embodiments described herein, the end cap and body portion may be manufactured from any suitable durable material, e.g., a hardened steel. As will be appreciated, the body portion and end cap may be manufactured in a variety of shapes and need not be cylindrical.
It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above-described embodiments (and/or aspects thereof) may be used in combination with each other. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. While the dimensions and types of materials described herein are intended to define the parameters of the invention, they are by no means limiting and are exemplary embodiments. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
In the appended claims, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.” Moreover, in the following claims, the terms “first,” “second,” “third,” “upper,” “lower,” “bottom,” “top,” “up,” “down,” etc. are used merely as labels, and are not intended to impose numerical or positional requirements on their objects. Further, the limitations of the following claims are not written in means-plus-function format and are not intended to be interpreted based on 35 U.S.C. §112, sixth paragraph, unless and until such claim limitations expressly use the phrase “means for” followed by a statement of function void of further structure.
This written description uses examples to disclose several embodiments of the invention, including the best mode, and also to enable any person skilled in the art to practice the embodiments of invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
As used herein, an element or step recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising,” “including,” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.
Since certain changes may be made in the above-described invention, without departing from the spirit and scope of the invention herein involved, it is intended that all of the subject matter of the above description or shown in the accompanying drawings shall be interpreted merely as examples illustrating the inventive concept herein and shall not be construed as limiting the invention.
