Abstract:
The present invention generally relates to an impact and temperature resistant housing that also resists being removed from its fixed mounting position. Additionally, the present invention resists being fashioned into a weapon if it is removed from its mounted position. In general, the present invention comprises a base section, conical section, terminal support section, and corresponding center terminal.

Description:
TECHNICAL FIELD  
         [0001]    The present invention generally relates to an encapsulated housing for an electronic touch memory button and related circuitry. Specifically, the present invention provides a rigid, impact resistant housing that encapsulates a touch button and corresponding electrical components, such as a circuit board. This housing is designed so that its shape provides excellent resiliency against external forces. The housing of the present invention also serves to impede one&#39;s ability to forcibly remove the housing from its mounted position.  
         BACKGROUND OF THE INVENTION  
         [0002]    Electronic touch memory button terminals are used for a variety of purposes, and generally comprise a metallic housing module, which includes circuit components therein. The assembly forms a touch memory button with the electronic components contained in the housing, wherein the housing can then be mounted in a desired location for use. The touch memory button terminals can be used in a variety of ways, such as for applications including inventory control, machinery maintenance records, retail tagging, guard tour systems or the like.  
           [0003]    The touch memory buttons are typically mounted to a wall or other surface using a mounting device. The touch memory buttons are configured such that a conductive terminal is formed on a top surface of the touch memory button assembly. In this and other possible applications, the electronic data module provides terminal connections, which can be contacted by the user to communicate with the electronic component package therein. As an example, a host system could read/write access such touch button modules by contacting a terminal provided thereby with a suitable reader. In many cases, a hand-held wand will provide the contact with the electronic touch memory button module, by contacting the electronic terminal by pressing a contact on the wand against the terminal. The manual contacting of the electronic terminal connects the reader with the electronic component package to communicate information therebetween. As merely an example of suitable touch memory buttons with which the present invention could be used, Dallas Semiconductors produces electronic data modules of this type, and corresponding reading devices such as that described. Examples of such devices are described for example in U.S. Pat. Nos. 4,945,217 and 4,982,371. Other touch button or electronic data module configurations are also contemplated to be used in the present invention.  
           [0004]    A specific application of the present invention is in association with the invention described in U.S. patent application Ser. No. 09/419,475 entitled “Guard Tour System” which is hereby incorporated herein by reference. The invention described is directed toward a system for use by security guards or the like, to monitor rounds of a property or the like by guards. The system comprises a variety of electronic hardware components and software. The electronic hardware includes one or more touch button readers; one or more downloaders for use with the touch button readers, and a plurality of electronic data modules or touch memory buttons located throughout a facility. Each electronic data module may comprise a housing according to the present invention, and may include electronic circuit components that may be preprogrammed with information specific to its particular location. The system may use electronic wands, which are touched to the electronic terminal associated with the data module, that are mounted in association with the housing on a wall or corridor along a guard&#39;s surveillance route or as desired for another application. Each electronic data module may contain preprogrammed information specific to its particular location in addition to a variety of other desired information. As a guard progresses through the route, the guard uses an electronic wand to read or transmit information from or to each touch memory button.  
           [0005]    The guard tour system as described is generally directed toward security applications, but can also be used in a plurality of applications in which regular checks of various conditions are made and verified. For example, the system can be used to insure regular checks of fire extinguishers throughout a facility. In this example each fire extinguisher would include a touch memory button fastened to its exterior. The touch memory button is encapsulated by an impact resistant housing, and would include information identifying the particular fire extinguisher in almost an identical manner to the system using touch memory buttons along a guard control path. Any application utilizing touch buttons could utilize the present invention, such as systems including but not limited to, equipment checks, maintenance checks, hotels, restaurants, supermarket and/or restroom cleaning checks, patient checks in hospitals, or any other application.  
           [0006]    The memory buttons may be used in a variety of other applications and settings, such as a prison, correctional facility, or other type of facilities or environments. Because the button may be used in various setting where it may be exposed to tampering or damage, it would be desirable to have a button housing to eliminate or minimize tampering or damage to the devices. Additionally, it would be desirable to provide for mounting of an electronic data module or touch memory button, such that damage from application of external forces that may be imparted on the device are eliminated or minimized. Further, it is desired that a housing for an electronic data module be capable of withstanding an unauthorized attempt to remove the module from its mounted position. Finally, it would be desirable to provide an electronic data module or touch memory button housing, which is temperature resistant, and able to withstand extreme temperatures from an incendiary device. It would also be desirable to provide an electronic data module housing which protects the electrical components from transient electrical signals or the like.  
         SUMMARY OF THE INVENTION  
         [0007]    Based upon the foregoing, it is an object of the present invention to provide an electronic data module housing which enhances protection of the module and which resists being destroyed by external forces and extreme temperatures, as well as resisting being removed from its mounted position.  
           [0008]    The housing is designed to have a profile, which inhibits damaging the electronic terminal and electrical components mounted in the housing. In an embodiment, the housing is formed as a frustoconical structure comprised an outer housing and an electronic terminal assembly accessible from the exterior thereof. The housing may be formed from plastic, metal, composite material or any other type of material that is suitable for forming such a housing. Depending on the environment the device is to be used in, the structural integrity of the material can be shown to withstand possible forces or conditions in a particular environment. As an example, a stainless steel outer housing may be used. In an embodiment of the present invention, the housing is comprised of a plurality of concentric sections that are integrated together to form a single unified housing. The housing may comprise a mounting section having a plurality of mounting bores, which extend through the mounting section, and having a conical section extending from the mounting section toward a central recess providing an electronic terminal support section. An electronic terminal is mounted in the support section, and is in electrical connection with the electrical circuit components mounted in the housing. Surrounding the interior of the terminal support section is a dielectric insulator that serves to electronically isolate the terminal. The housing forms a cavity created by the frustoconical section to provide a region for electrical components, such as a circuit board, mounted in electrical isolation. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]    [0009]FIG. 1 is a cross-sectional view of the present invention.  
         [0010]    [0010]FIG. 2 is a top elevational view of the present invention.  
         [0011]    [0011]FIG. 3 is a side elevational view of center terminal of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0012]    Turning to FIGS.  1 - 3 , there is illustrated an embodiment of the present invention, or electronic data module housing  10 . The housing  10  comprises a mounting section  12 , a frustoconical section  16 , and a terminal support section  18 . The mounting section  12  is a substantially disk-shaped, planar surface that has one or more mounting bores  14 , which extend through the surface of the mounting section  12 , and allow a securing device such as a screw, nail, bolt, or other similar means to be used to secure the housing  10  to a wall, door, or any other suitable area. Additionally, the mounting section  12  may take on any form or shape that is suitable for the particular application. It is also contemplated that at least one bore  14  is designed, such that the head of the fastener used to mount the present invention  10  is flush or counter sunk with respect to the top of the surface of the mounting section  12 . Thus, because the amount of edges or protrusions of the housing  10  are reduced, it is difficult for an unauthorized individual to achieve any leverage, or to grab on to, or to attach a tool onto the housing  10 . As a result, the housing  10  is made resistant to being removed from its mounted position unless desired. Moreover, the present invention may be mounted at a desired location using glue, epoxy, or another suitable adhesive or like material.  
         [0013]    The frustoconical section  16  is substantially sloped and extends upwardly from the mounting surface in a low profile configuration. Depending on the mounting surface, the angle (i.e. shallowness/steepness) of the conical section  16 , as well as the height that the conical section  16  extends from the mounting section  12  can vary. At the apex of the conical section  16  is a terminal support section  18  which may be substantially cylindrical in shape. The terminal support section  18  extends generally perpendicularly with respect to the mounting section  12 , and forms a cavity  21  at the apex for positioning and protecting a terminal  30 . The terminal  30  may be formed as a solid piece of stainless steel, and provides one of the two electrical connections between a reader (not shown) and the electronic circuitry on the printed circuit board (PCB)  22 . Another terminal is provided by the housing section  18  adjacent the terminal  30 . The terminal support section  18  may further comprise a supporting surface generally indicated at  19 , which extends inwardly from section  18 . The supporting surface  19  facilitates proper positioning of terminal  30 , and supports the terminal  30  in association with housing  10 , particularly against impacts on terminal  30 . The supporting surface  19  also comprises an opening  23  therein, being a central opening in the embodiment shown. The opening  23  provides access from the terminal cavity  21  to an interior enclosed cavity  26  formed adjacent a mounting surface by housing  10 . The terminal cavity  21  is lined with a dielectric material  20  that serves to encapsulate and electrically isolate the electronic center terminal  30 , disposed within the terminal support cavity  21 . The member  20  may be a nylon washer or other suitable material, which in conjunction with the terminal  30 , may be press fit into the terminal support section  18 . The material from which member  20  is made could be any suitable insulating material. Further, the entire assembly could be molded in place, glued, or otherwise mechanically fastened. The terminal  30  may also be held in position within the insulating material member  20  by any type of suitable adhesive, or in other suitable and known manners.  
         [0014]    As noted form the above, the terminals provided by terminal  30  and housing section  18 , have a shape and dimension to allow any reader capable of reading conventional touch memory buttons to communicate with the electronics mounted in association with the PCB  22 . Any part of the housing  10  in the area of section  18 , can serve as a terminal for connection to the PCB via electrical connectors  24 . The base section  12 , conical section  16 , and the terminal support section  18  are preferably integrally formed from the same material such as plastic, metal, composite, or any other suitable material. Alternatively, these sections could be constructed individually from various materials and suitably joined together via welding, thermo-welding, adhesives or any other suitable means of connecting the individual sections together. The material chosen to comprise the base section  12 , the conical section  16 , and the terminal support section  18  is impact resistant and is capable of withstanding a variety of external forces, which may be directed toward the housing  10 . If the material chosen were not electrically conductive, a further electrical contact would be provided to allow communication with the reader.  
         [0015]    The housing of the present invention  10  forms cavity  26  in conjunction with a mounting surface, which is fully enclosed and protected from the external environment. The cavity  26  forms a mounting space for the printed circuit board  22 . The PCB  22  is connected to terminal  30  and conductive housing  10  in the area of section  18  by electrical connectors  24 , used to operatively connect terminal  30  for operation as controlled by circuit components on PCB  22 . This cavity  26  provides sufficient area such that the circuit board  22  does not extend beyond the bottom of the base section  12 , thus allowing the present invention  10  to be mounted directly to a desired mounting surface. On the PCB  22 , electronic components, such as a circuit component produced by Dallas Semiconductor, referred to as the Dallas DS2401Z (Silicon Serial No.), which is similar circuitry to that used in typical touch memory buttons produced by Dallas Semiconductor. Further, a transient voltage suppressor circuit, such as produced by General Semiconductor as Model TGL41-6.8, may provide transient voltage protection for the other circuit components, such as may be supplied from a 9 Volt battery or other sources.  
         [0016]    [0016]FIG. 3 illustrates a side view of the electronic terminal  30 , which the housing  10  is designed to mount in an impact resistant configuration. The cavity  21  created by the terminal support section  18  provides a secure and sturdy support for the terminal  30 . The terminal  30  may comprise a top section  32  and a bottom section  34 . The top section  32  is preferably mounted so as to be substantially flush with the top portion of the terminal support section  18 . In this manner, a person using a portable data reading/transfer device can transfer or receive electronic data through the outwardly facing surface of terminal  30 . The mounting configuration protects both the terminal  30  as well as circuit board  22  within the impact resistant housing  10 . To further facilitate protecting the circuit components, once the circuit board  22  is mounted in association with terminal  30  within cavity  26 , the cavity can be filled with a potting compound, such as a hard epoxy, for potting of the circuitry within housing  10 . The hard epoxy potting compound will secure the connection between the circuit board  22  and terminal  30 , and protect the circuitry from external environmental elements, such as moisture, heat or the like. The potting of the electrical circuit components also protects the circuitry from possible electrical interference with other electrical devices. The configuration also incorporates electrical protection from external voltage sources, such as typical 9-volt battery or the like. The housing  10  is designed to prevent abuse from deliberate impacts, as well as possible damage from heat sources or the like. The low profile configuration of the housing  10  provides a more secure mounting of an electronic data module or touch memory button assembly and associated circuit components for various applications in which electronic data modules may be used. For use in a guard tour system as described, the ruggedized electronic data module configuration reduces the ability for the terminal and related circuit components to be damaged in the environments in which the devices are used, such as security facilities, prisons or the like. The low profile housing configurations reduces the ability to remove the housing from its mounted position, while making the terminal easily accessible for interrogation by a hand-held reader or the like. It should also be understood that while a particular embodiment of the present invention has been shown and described herein, various alternatives could also be made, such as in the mounting of the terminal in association with the housing. As an example, a standard Dallas Semiconductor touch memory button could be mounted (perhaps even by the end user) inside the housing  10 , from the rear of housing  10 , with the cavity  21  configured to retain the standard memory button in the desired position. In such an embodiment, the housing  10  would not be completely filled with a potting compound to allow access from the rear of the housing  10 . In this case, the housing  10  would protect the standard touch memory button and may also be configured to provide transient voltage protection. The button could therefore be installed much like a battery is installed into a watch, providing protection for the housing in which the standard button is packaged. Current buttons are thin and fragile, accordingly such a configuration would take this into account. Further, although the housing  10  has been shown to have a substantially circular configuration, other shapes may be used for a desired application or environment.  
         [0017]    The foregoing disclosure is illustrative of the present invention, and is not to be construed as limiting thereof. Although an embodiment of the invention has been described, persons of ordinary skill in the art will readily appreciate that numerous modifications could be made without departing from the scope and spirit of the disclosed invention. As such, it should be understood that all such modifications are intended to be included within the scope of this invention as defined in the claims. Within the claims, any means-plus-function language is intended to cover the structures described in the present invention as performing the recited function, and not only structural equivalence, but also equivalent structures. The written description and drawings illustrate the present invention and are not to be construed as limited to the specific embodiment disclosed. The present invention is only therefore defined by the following claims, including equivalence thereof.