Abstract: A gage assembly includes a base having an arm configured to move between an open position and a closed position and a clamp fixed to the base. The clamp includes a handle configured to move between a first position and a second position. The clamp also includes a clamp extension configured to move between an open position and a closed position. The movement of the handle corresponds with movement of the clamp extension between the first position and the second position and of the arm between the open position and the closed position such that when the handle is in the first position the arm and the clamp extension are in the open position and when the handle is in the second position the arm and the clamp extension are in the closed position.

Abstract: A virtual tunnel method is described herein which implemented by a host and next hop routers to address a problem that is related to synchronizing active tunnel(s) and active link(s) between the host and next hop routers. Furthermore, a multiple tunnel management method is described herein which implemented by a host to address the problem that is related to synchronizing active tunnel(s) and active link(s) between the host and multiple next hop routers.

Abstract: A virtual tunnel method is described herein which implemented by a host and next hop routers to address a problem that is related to synchronizing active tunnel(s) and active link(s) between the host and next hop routers. Furthermore, a multiple tunnel management method is described herein which implemented by a host to address the problem that is related to synchronizing active tunnel(s) and active link(s) between the host and multiple next hop routers.

Abstract: In one aspect, the present invention addresses Layer-3 (L3) connection monitoring between two “multi-attached” host nodes that are interconnected via an intervening communication network having a known network topology. The present invention provides the two-fold benefit of rapid connection failure detection and failure location determination. In one or more embodiments, the present invention “pinpoints” the failure location, improving the intelligence of any triggered failure recovery mechanism and/or providing better, more meaningful failure reporting. A BFD session is established between the local and remote host nodes for each L3 communication path between them, e.g., for each unique pairing of local and remote network attachment points. Upon the occurrence of an L3 connection failure, the pattern of up/down states for these BFD sessions is analyzed, along with knowledge of the involved network topology, to determine the apparent location of the L3 connection failure.

Abstract: A virtual tunnel method is described herein which implemented by a host and next hop routers to address a problem that is related to synchronizing active tunnel(s) and active link(s) between the host and next hop routers. Furthermore, a multiple tunnel management method is described herein which implemented by a host to address the problem that is related to synchronizing active tunnel(s) and active link(s) between the host and multiple next hop routers.

Abstract: A virtual tunnel method is described herein which implemented by a host and next hop routers to address a problem that is related to synchronizing active tunnel(s) and active link(s) between the host and next hop routers. Furthermore, a multiple tunnel management method is described herein which implemented by a host to address the problem that is related to synchronizing active tunnel(s) and active link(s) between the host and multiple next hop routers.

Abstract: In one aspect, the present invention addresses Layer-3 (L3) connection monitoring between two “multi-attached” host nodes that are interconnected via an intervening communication network having a known network topology. The present invention provides the two-fold benefit of rapid connection failure detection and failure location determination. In one or more embodiments, the present invention “pinpoints” the failure location, improving the intelligence of any triggered failure recovery mechanism and/or providing better, more meaningful failure reporting. A BFD session is established between the local and remote host nodes for each L3 communication path between them, e.g., for each unique pairing of local and remote network attachment points. Upon the occurrence of an L3 connection failure, the pattern of up/down states for these BFD sessions is analyzed, along with knowledge of the involved network topology, to determine the apparent location of the L3 connection failure.

Abstract: A node of a packet switched telecommunications network includes a network interface unit which sends and, receives data from the network. The node includes a processing unit which performs real-time Quality of Service (QoS) measurements on the data and routes the data through the network interface to the network based on the QoS measurements. A method for routing data by a node of a packet switched telecommunications network including the steps of sending and receiving data to and from the network with a network interface of the node. There is the step of performing real-time Quality of Service (QoS) measurements on the data with a processing unit of the node. There is the step of routing the data with the processing unit through the network interface to the network based on the QoS measurements.

Abstract: A first group of core network (CN) nodes are arranged for transmitting a change request from a source to a target radio network controller (RNC), to a CN node selected from the set of CN nodes to which the target RNC is connected. Relating to a communication in progress with a first RNC (11) and a first CN node (13), for which a change from the first to a second RNC (12) is requested: the change request is transmitted from the first CN node to a second CN node (14) of the first group, and is forwarded from the second to a third CN node (15) selected, according to predetermined criteria, from the set of CN nodes to which the second RNC is connected.

Abstract: A multiple position tool receptacle may be incorporated within a medical delivery unit, such as a dental unit head, allowing for positioning of a hand-held device in one of two or more seats. The receptacle may include a switching device operatively coupled in the receptacle to “activate” the medical delivery unit upon removal of a hand-held device from any one of the receptacle's seats. A method of providing multiple hand piece positioning in a “holster” is also provided.

Abstract: A hand-operated brake release may be incorporated within a medical delivery unit, such as a dental unit head, having an articulating apparatus allowing for improved ergonomic positioning of the delivery unit. The hand-operated brake release includes a sheath covering a switching element coupled to a handle in order to provide sealed brake releasing sensitive to the user's touch or grasp. A method of operating a delivery unit mounted on an articulating arm is also provided.

Abstract: A first group of core network (CN) nodes are arranged for transmitting a change request from a source to a target radio network controller (RNC), to a CN node selected from the set of CN nodes to which the target RNC is connected. Relating to a communication in progress with a first RNC (11) and a first CN node (13), for which a change from the first to a second RNC (12) is requested: the change request is transmitted from the first CN node to a second CN node (14) of the first group, and is forwarded from the second to a third CN node (15) selected, according to predetermined criteria, from the set of CN nodes to which the second RNC is connected.

Abstract: An uninterruptible power supply (UPS) includes a plurality of UPS modules. Each of the UPS modules has a battery that provides power to a protected load in the event of a utility power failure. A plurality of controllers control how much power each of the batteries deliver to the protected load, and a communication bus allows the controllers to exchange information about the battery voltages. One of the controllers calculates the average battery voltage of the plurality of batteries and adjusts the amount of energy provided by an individual battery such that the battery voltage is about equal to the average battery voltage.

Abstract: An uninterruptible power supply (UPS) system includes a first UPS module that has a first power source, a second power source and a controller operable to selectively connect the first or second power source to a load. A second UPS module is connected in parallel with the first UPS module. The second UPS module also includes a first power source, a second power source and a controller operable to selectively connect the first or second power source to a load. The controller of the first UPS module gradually transfers power from the first power source of the first UPS module to the first power source of the second UPS module to detect the presence of the first power source of the second UPS module.

Abstract: Devices and methods for improved voltage source transfer switching. First and second voltage sources (primary and alternate) are connectable to a load via corresponding first and second switches, which may comprise SCRs. A controller operates the switches according to various transfer methods. In some transfer methods, the timing of the switching operation is critical. For example, switching times may be optimized to reduce or prevent transformer saturation due to the dc flux built up during the transfer event. The controller force commutates off the primary source switch by turning on the appropriate alternate source switch for a brief period of time. In this case, the alternate source switches are “pulsed” (rather than being turned on continuously), so that the switches will naturally commutate off at the next current zero cross. Subsequently, the volt-second balancing control logic will permanently turn on these switches at the appropriate time.

Abstract: This disclosure is concerned with devices and methods for voltage source transfer switching that reduces or eliminates transformer saturation due to DC flux built up during a transfer event. First and second voltage sources (primary and alternate) are connectable to a load via corresponding switches. A transformer is connected downstream of the switches. A controller operates the switches according to various transfer methods wherein a switching time is determined to minimize downstream saturation current.

Abstract: A communication circuit carries at least one signal including synchronizing intervals by which output of the signal by first apparatus coupled to the communication circuit is to be synchronized. A communication method includes selecting and modulating at least a portion of the duration of at least some of the synchronizing intervals. A modulator is provided for selecting and modulating at least a portion of the duration of at least some of the synchronizing intervals. Another communication circuit carries at least a first signal including frequencies in at least a first frequency band. A method of determining whether the first signal is escaping from the circuit includes transporting along the circuit apparatus adapted for receiving the first signal, detecting whether a received signal includes frequencies in the first frequency band, and producing an indication that the received signal includes frequencies in the first frequency band.

Abstract: The present invention is a redundancy system in the interface between a wireless and packet-based telecommunications network. The redundancy system includes back-up support components coupled to hub broadcast routers. Because the back-up support component monitors all communications to the primary support component through the communications from the hub broadcast routers, the back-up support component can assume responsibility for the primary interface support component without excessive overhead in sending back-up file information to a redundant component.

Abstract: A multi-stage cooling system is disclosed. The multi-stage cooling system is capable of providing a plurality of cooling capacities. The cooling system has a plurality of independently operable compressors. A control system operates the compressors to provide a cooling capacity corresponding to the heat load of a space to be cooled. A condenser structure of the cooling system has a plurality of individual condenser coils. Each condenser coil has an independent refrigerant path receiving compressed refrigerant from one of the compressors. An evaporator structure of the cooling system has a plurality of individual evaporator coils. Each evaporator coil has an independent refrigerant path receiving condensed refrigerant from a corresponding condenser coil via an expansion mechanism and returning refrigerant to an input of a corresponding compressor.

Abstract: A multi-stage cooling system is disclosed. The multi-stage cooling system is capable of providing a plurality of cooling capacities. The cooling system has a plurality of independently operable compressors. A control system operates the compressors to provide a cooling capacity corresponding to the heat load of a space to be cooled. A condenser structure of the cooling system has a plurality of individual condenser coils. Each condenser coil has an independent refrigerant path receiving compressed refrigerant from one of the compressors. An evaporator structure of the cooling system has a plurality of individual evaporator coils. Each evaporator coil has an independent refrigerant path receiving condensed refrigerant from a corresponding condenser coil via an expansion mechanism and returning refrigerant to an input of a corresponding compressor.