Abstract:
An electrical appliance includes a power cord having a GFCI device and an associated remote test/reset unit. The power cord includes a first end portion provided with a plug adapted to be inserted into an electrical outlet. The first end portion extends to a second end portion that is electrically coupled to a plurality of electrical components in the appliance. The test/reset unit is spaced from the GFCI device along the power cord. Preferably, the test/rest unit is connected to the power cord through an extension lead. With this arrangement the test/reset unit is actually remote from the GFCI device, allowing easy access to service personnel.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention pertains to the art of electrical appliances and, more particularly, to an electrical appliance provided with a ground fault circuit protection device having a remote, easily accessible test/reset unit. 
     2. Discussion of the Prior Art 
     Providing circuit protection for electrical appliances is well known in the art. Certainly, virtually all receptacles are provided with some form of over current protection, typically a fuse or circuit breaker. In general, the fuse or circuit breaker functions to interrupt power to a receptacle or other electrical device in the event current flowing through the circuit exceeds a predetermined threshold value. The National Electrical Code (NEC) sets the standard for matching a particular circuit breaker with a particular size or gauge wire. In any case, by cutting off power to an electrical appliance having a shorted circuit, wires carrying the electrical current to the appliance are prevented from over-heating and possibly melting. 
     Several years ago, the National Electrical code implemented a requirement that all receptacles located in bathrooms, above kitchen counters, outdoors or other similar locations, be provided with ground fault protection. Towards that end, receptacles placed in the above locations/environments are now protected with a ground fault circuit interrupter (GFCI). The GFCI device could either be mounted at a circuit panel, i.e., incorporated into a circuit breaker, or provided directly at the receptacle. GFCI devices interrupt power to an electrical load in the event that a ground leak is detected. In simple terms, the GFCI device cuts off power to an electrical load having grounded portions of the load exposed to electrical current. By interrupting power to a device leaking current to ground, an individual who may come in contact with a grounded portion of the load will not receive a shock. In any case, once the faulty load has been disconnected, a reset button is activated to restore power to the receptacle. Most, if not all, GFCI devices are provided with a test button. When activated, the test button simulates a ground leak to test the functionality of the GFCI device. 
     Over the years, the NEC has called for GFCI protection in more and more applications. For instance, an impending change to the NEC will require that all vending machines be provided with GFCI protection. The impending change will require that a GFCI device be provided either at the circuit breaker, the outlet or in the power cord within 12″ of the power cord plug. Accessing a circuit breaker to test or reset a GFCI device is generally not a problem. Circuit breakers are typically located in panels that, if not readily accessibly by service personnel, can be accessed by other on-site personnel. In contrast, GFCI devices that are located at the receptacle or in the power cord may be made generally inaccessible by the particular positioning of the vending machine. That is, a vending machine(s) or another electrical appliance(s) may block access to the receptacle or power cord plug, while the appliance may be quite difficult to move. If the GFCI device is made inaccessible, service personnel would be unable to test the functionality of the GFCI device or reset a tripped GFCI device after the problem that caused the initial trip is corrected. 
     Accordingly, despite the existence of various GFCI devices available in the prior art, there still exists a need for a GFCI device that can be employed with electrical appliances having receptacles or power cord plug portions that are inaccessible. More specifically, there exists a need for a GFCI device having a remote test/reset unit that can be employed in applications where access to a receptacle or power cord is, at least, substantially limited. 
     SUMMARY OF THE INVENTION 
     The present invention is directed to an electrical appliance provided with a ground fault circuit interrupter (GFCI) device that is provided with a remote test/reset unit. The electrical appliance includes a cabinet that houses a plurality of electrical components employed in the overall operation of the appliance. The appliance is provided with a power cord that electrically connects the electrical components in the cabinet to a source of electricity. 
     In accordance with the invention, the power cord includes a first end portion that is provided with a plug. The plug is adapted to be inserted into an electrical outlet. The first end portion extends to a second end portion which is electrically coupled to the plurality of electrical components in the cabinet. The first and second end portions are interconnected through an intermediate portion. Preferably, both the GFCI device and the test/reset unit are electrically coupled to the power cord, with the test/reset unit being separate from, yet electrically connected to, the GFCI device. Most preferably, the test/reset unit is spaced from the GFCI device along the power cord. In accordance with the most preferred form of the invention, the test/rest unit is connected to the power cord and the GFCI device through an extension lead. With this arrangement, the test/reset unit is actually offset from a main axis of the power cord, allowing installation at a location that provides access to service personnel. 
     Additional objects, features and advantages of the present invention will become more readily apparent from the following detailed description of a preferred embodiment when taken in conjunction with the drawings wherein like reference numerals refer to corresponding parts in the several views. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a front elevational view of an electrical appliance, in the form of a vending machine, incorporating a power cord having a GFCI device provided with a remote test/rest unit in accordance with the invention; and 
         FIG. 2  is a detail view of the power cord of  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     With initial reference to  FIG. 1 , an electrical appliance, shown in the form of a vending machine  2 , includes a cabinet  4 . As shown, cabinet  4  includes top, bottom and opposing side walls  6 - 9 . Arranged below bottom wall  7  are a pair of leg members  10  and  11  for positioning vending machine  2  upon a supporting surface (not shown). In the preferred embodiment shown, vending machine  2  is divided into a plurality of zones for performing various functions associated with the delivery of products to a consumer. Towards that end, vending machine  2  includes a storage/display zone  14 , a currency receiving zone  15  and a dispensing zone  16 . 
     In the embodiment shown, storage/display zone  14  is provided with a plurality of product support shelves  20 - 24  for supporting and displaying a plurality of product containers, one of which is indicated at  26 . Each of the plurality of product support shelves  20 - 24  includes an associated plurality of dispensing mechanisms  27  for delivering each product container  26  from storage/display zone  14  to dispensing zone  16 . The actual construction and operation of the dispensing mechanisms does not constitute part of the present invention. Instead, various known dispensing mechanisms could be employed, including that set forth in detail in commonly assigned U.S. Pat. No. 6,571,988 entitled “Article Release Mechanism For a Vending Machine” issued on Jun. 3, 2003. Again, it should be understood that various other dispensing mechanisms could be employed, such as coils for prepackaged food items, conveyor belts, delivery cups or the like. In a manner known in the art, storage/display zone  14  is provided with a door  34  having a glass panel  35  that enables a consumer to view and choose between the variety of available product containers  26  stored within vending machine  2 . 
     In accordance with the embodiment shown, dispensing zone  16  is arranged below storage/display zone  14  and includes a dispensing chamber  37  having a plurality of product access openings  39  and  40  that enable the consumer to remove a dispensed product from dispensing chamber  37 . Product access openings  39  and  40  are provided with delivery doors  43  and  44  respectively, each of which is pivotally mounted to dispensing chamber  37  so as to be shiftable between a first position, effectively closing off a respective product access opening  39 ,  40  and a second position enabling the retrieval of a dispensed product from dispensing chamber  37 . 
     In the embodiment shown, currency receiving zone  15  includes a currency receiving center  50  for inputting and storing currency deposited by the consumer during a vend transaction. Currency receiving center  50  includes a bill acceptor/validator  52 , a multi-price coin mechanism  53  and a key pad  55  for inputting particular product selections. Currency receiving center  50  also includes a display  57  for providing information to the consumer, as well as validating the particular selection made. Finally, a coin return slot  59  is provided for returning any required change to the consumer at the completion of a vend operation. In general, the above described structure is provided for the sake of completes and to enable a better understanding of the figures. The present invention is actually directed to an electrical appliance circuit protection device employed in connection with vending machine  2  or other appliance. 
     As illustrated in  FIGS. 1 and 2 , vending machine  2  includes a power cord  100  used to supply electrical energy to various electrical components housed within cabinet  4  such as, for example, dispensing mechanism  27 , bill acceptor/validator  52  and display  57 . Power cord  100  is shown to include main cord body  101  having a first end  104  provided with a male plug portion  106  that is adapted to cooperate with a receptacle  107 . Plug portion  106  can be designed to interconnect with a standard 120 volt receptacle, a 220 volt receptacle, or any receptacle design which can transfer the power necessary to operate the various electrical components. First end  104  extends to a second end  110  having a female plug portion  112  that interconnects with vending machine  2 . At this point, it should be noted that second end  110  could actually be hard-wired to vending machine  2 . Extending between first and second ends  104  and  110  is an intermediate portion  116  of main cord body  101 . In accordance with the embodiment shown, a ground fault circuit interrupt (GFCI) device is arranged along intermediate portion  116 . GFCI device  120  functions to protect or interrupt power to vending machine  2  in the event of a current leak to ground. 
     In accordance with a preferred form of the invention, a test/reset unit  130  is spaced from GFCI device  120  along power cord  100 . Test/reset unit  130  enables service personnel to test the operational capability of GFCI device  120  and reset power to vending machine  2  following a test or in the event that GFCI device  120  has sensed a fault condition and interrupted power to vending machine  2 . Test/reset unit  130  includes a main body portion  132  upon which is mounted a test button  133  and a reset button  134 . Of course, it should be understood that additional features, such as indicator lights, could also be provided on main body portion  132 . 
     In accordance with the most preferred form of the invention, test/reset unit  130  is arranged remote from main cord body  101  of power cord  100  through an extension lead  144 . Extension lead  144  extends from main cord body  101  and includes a first end  146  that leads into main body portion  132  and a second end  148  that ultimately connects to GFCI device  120 . In the embodiment shown, extension lead  144  extends to intermediate portion  116  of power cord  100 . However, it should be understood that test/reset unit  130  could be arranged at various other points along power cord  100  that are spaced from GFCI device  120 . 
     With this construction, test/reset unit  130  provides a remote and easily accessible unit for testing or resetting GFCI device  120 . That is, given the size and weight of vending machine  2 , it is often the case that access to receptacle  107  is not readily available. Moreover, given the National Electric Code requirement that GFCI device  120  be located no more than 12 inches from first end  104  of power cord  100 , it may not be even possible to access GFCI device  120 . Thus, while GFCI device  120  must be located closer, i.e., within at least 12 inches, to first end portion  104 , such as denoted by distance X in  FIG. 2 , the distance “Y” from GFCI device  120  to second end portion  110  can be of any length necessary to enable power cord  100  to reach from receptacle  107  to power vending machine  2 . Therefore, by arranging test/reset unit  130  closer to second end portion  110 , and preferably mounted to extension lead  144 , the need to access receptacle  107  or GFCI device  120  is negated, and test/reset functions can be readily performed without the need to move vending machine  2 . 
     Although described with reference to a preferred embodiment of the invention, it should be readily understood that various changes and/or modifications can be made to the invention without departing from the spirit thereof. For instance, while the test/reset unit is shown attached to the power cord through an extension lead, it should be understood that the test/reset unit could be provided along the axis of the power cord itself or at the female plug portion that connects to the appliance. In addition, while the electric appliance of the present invention is described as a vending machine, it should be understood that the present invention can be incorporated into any number of electrical appliances such as, for example, laundry appliances, refrigerators, cooking appliances or other types of electrical appliances that would benefit from GFCI protection and require access to a remote/test unit. In general, the invention is only intended to be limited by the scope of the following claims.