Patent application number | Description | Published |
20090013111 | Unidirectional USB Port - A circuit interfaced between a first USB host and a second USB host for providing unidirectional transmission of data signals from the first USB host to the second USB host is provided. A first converter circuit is operable to receive data signals from the first USB host and convert them from a USB protocol to a second communications protocol. A second converter circuit is operable to receive the converted data signals from the first converter circuit and convert them from the second communications protocol to the USB protocol for transmission to the second USB host. The first and second converter circuits are electrically connected to each other in such a manner as to provide a transmission path from the first USB host to the second USB host and to disable a transmission path from the second USB host to the first USB host. | 01-08-2009 |
20090160425 | Multi-Test Circuit Interrupter Tester - A testing system includes a hand-held transmitter that plugs into a receptacle electrically coupled to a selected branch circuit. The transmitter includes a circuit effective to test an arc fault circuit interrupter electrically coupled to the branch circuit by creating a first pulse on the branch circuit that is effective to trip the arc fault circuit interrupter. The transmitter can perform at least one additional test including: determining whether the receptacle is wired properly; determining a location of a circuit interrupting device electrically coupled to the branch circuit by creating a second pulse on the branch circuit that can be sensed by a receiver located proximately to the respective circuit interrupting device and broadly tuned about a frequency of the second pulse; and testing a ground fault circuit interrupter electrically coupled to the branch circuit by creating a third pulse on the branch circuit that is effective to trip the ground fault circuit interrupter. | 06-25-2009 |
20100301998 | Multi-sensor alarm apparatus, system and/or method for securing articles - A multi-sensor alarm apparatus, system and method may prevent and/or may deter a theft and/or a removal of one or more articles from a display stand. A base, a main body and a head unit are provided. The base and the main body are secured to the display stand. The multi-sensor alarm apparatus monitors an integrity of the attachment of the main body to the base with a separation sensor. Further, the multi-sensor alarm apparatus monitors sensors connected to the head unit and/or to the main body. The sensors may be removed and/or added as needed depending on the articles to be secured. | 12-02-2010 |
20110084689 | Circuit, system and/or method for detecting an electrical connection between an electrical device and a power supply - A circuit, a system and/or a method detect a passive electrical connection and/or an active electrical connection between an electrical device and a power supply. An integrity of the electrical connection between the electrical device and the power supply is monitored to determine if the electrical device may have access to power and/or to determine if the electrical device may be secure while on display. A high frequency AC signal is modulated onto a positive power rail between the electrical device and the power supply. Capacitance circuitry of the electrical device may remove the high frequency signal from the positive power rail. An absence of the high frequency signal on the positive power rail indicates that the electrical connection exists between the electrical device and the power supply. A presence of the high frequency signal on the positive power rail indicates that the electrical connection does not exist between the electrical device and the power supply. | 04-14-2011 |
20110114618 | UNIVERSAL FOOD HOLDING CABINET WITH SNAP-IN ESCUTCHEONS - Bezels or escutcheons for a temperature-controlled food holding cabinet are removable and field replaceable by the use of interlocking tabs and detents that hold the escutcheon in place and align the escutcheon to electrical connectors. A tab formed on either the escutcheon or chassis of the cabinet, engages a corresponding detent formed on either the cabinet chassis or the escutcheon. Two tabs and detents are preferably used. One tab engages a corresponding detent with an interference fit. | 05-19-2011 |
20110114624 | FOOD HOLDING CABINET POWER SUPPLIES WITH DOWNLOADABLE SOFTWARE - A universal food holding cabinet has multiple compartments, the temperatures of which are under software control by microprocessors or microcontrollers located on power supply circuit boards for corresponding compartments. Each compartment can have different temperature control requirements with different requirements being met by different programs in different processors, or different operating parameters for the same program. The cabinet is configured to prevent the power supply boards from being installed incorrectly, to provide an address to a power supply circuit board when it is installed and by which a power supply circuit can be addressed by a master controller to receive downloads of executable instructions and/or data. | 05-19-2011 |
20110114625 | FOOD HOLDING CABINET WITH SELF-ALIGNING AND ADDRESSABLE POWER SUPPLIES - A universal food holding cabinet has multiple compartments, the temperatures of which are under software control by microprocessors or microcontrollers located on power supply circuit boards for corresponding compartments. Each compartment can have different temperature control requirements with different requirements being met by a different program in different processors, or different operating parameters for the same program. The cabinet is configured to prevent the power supply boards from being installed incorrectly, to provide an address to a power supply circuit board when it is installed and by which a power supply circuit can be addressed by a master controller. | 05-19-2011 |
20110252984 | Temperature Sensor for a Food Holding Cabinet - The temperature of shelves used in a food holding cabinet are measured using a transistor. The voltage across a PN junction being known to be temperature dependent, the shelf temperature can be inferred from a calculated temperature of a PN junction of a transistor thermally coupled to a heated or refrigerated shelf. No calibration of the measurement device is required since the PN junction voltage, current and temperature relationship is well known. | 10-20-2011 |
20120256753 | ARC FAULT CIRCUIT INTERRUPTER TESTER - An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense circuit. When the power transistor is operated, the current flowing through the transistor is sensed, and if the current is not at least equal to a threshold value, the voltage at which the power transistor is operated is increased. | 10-11-2012 |
Patent application number | Description | Published |
20090067344 | System, apparatus, and method for assigning node addresses in a wireless network - A significant label is associated with at least one node of a wireless network through the use of a handheld wireless transceiver. A user passes the transceiver near a network node, causing the transceiver to read the unique address of the node. The user then enters a label holding significance into the transceiver, which associates the label with the unique address. | 03-12-2009 |
20090268989 | Secured bag locking and tracking device - A secure container for controlling and monitoring access to at least one secured bag locking device is disclosed. The secure container is lockable to prevent access by unauthorized parties, and may include any feature of prior art secure containers, such as shock detection or a camera to photograph access. The secure container contains a number of rails to provide power to and monitor the status of docked secured bag locking devices. In addition, the secure container includes an antenna to allow secured devices to be tethered to it via communications with an active radio frequency identification tag secured to the tethered device. | 10-29-2009 |
20100026086 | TWO-WIRE ADDRESSING SCHEME - A two-wire communications system is disclosed. The disclosed communications system uses a distributed power line and a distributed common line to transmit messages. A power transistor is operated to transmit either a logical high or a logical low using the two signal lines. | 02-04-2010 |
20110210819 | SECURED BAG LOCKING AND TRACKING DEVICE - A secure container for controlling and monitoring access to at least one secured bag locking device is disclosed. The secure container is lockable to prevent access by unauthorized parties, and may include any feature of prior art secure containers, such as shock detection or a camera to photograph access. The secure container contains a number of rails to provide power to and monitor the status of docked secured bag locking devices. In addition, the secure container includes an antenna to allow secured devices to be tethered to it via communications with an active radio frequency identification tag secured to the tethered device. | 09-01-2011 |
Patent application number | Description | Published |
20090013111 | Unidirectional USB Port - A circuit interfaced between a first USB host and a second USB host for providing unidirectional transmission of data signals from the first USB host to the second USB host is provided. A first converter circuit is operable to receive data signals from the first USB host and convert them from a USB protocol to a second communications protocol. A second converter circuit is operable to receive the converted data signals from the first converter circuit and convert them from the second communications protocol to the USB protocol for transmission to the second USB host. The first and second converter circuits are electrically connected to each other in such a manner as to provide a transmission path from the first USB host to the second USB host and to disable a transmission path from the second USB host to the first USB host. | 01-08-2009 |
20100026086 | TWO-WIRE ADDRESSING SCHEME - A two-wire communications system is disclosed. The disclosed communications system uses a distributed power line and a distributed common line to transmit messages. A power transistor is operated to transmit either a logical high or a logical low using the two signal lines. | 02-04-2010 |
20110114624 | FOOD HOLDING CABINET POWER SUPPLIES WITH DOWNLOADABLE SOFTWARE - A universal food holding cabinet has multiple compartments, the temperatures of which are under software control by microprocessors or microcontrollers located on power supply circuit boards for corresponding compartments. Each compartment can have different temperature control requirements with different requirements being met by different programs in different processors, or different operating parameters for the same program. The cabinet is configured to prevent the power supply boards from being installed incorrectly, to provide an address to a power supply circuit board when it is installed and by which a power supply circuit can be addressed by a master controller to receive downloads of executable instructions and/or data. | 05-19-2011 |
20110114625 | FOOD HOLDING CABINET WITH SELF-ALIGNING AND ADDRESSABLE POWER SUPPLIES - A universal food holding cabinet has multiple compartments, the temperatures of which are under software control by microprocessors or microcontrollers located on power supply circuit boards for corresponding compartments. Each compartment can have different temperature control requirements with different requirements being met by a different program in different processors, or different operating parameters for the same program. The cabinet is configured to prevent the power supply boards from being installed incorrectly, to provide an address to a power supply circuit board when it is installed and by which a power supply circuit can be addressed by a master controller. | 05-19-2011 |
20120256753 | ARC FAULT CIRCUIT INTERRUPTER TESTER - An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense circuit. When the power transistor is operated, the current flowing through the transistor is sensed, and if the current is not at least equal to a threshold value, the voltage at which the power transistor is operated is increased. | 10-11-2012 |