Patent application number | Description | Published |
20090056644 | STORAGE-TYPE WATER HEATER HAVING TANK CONDITION MONITORING FEATURES - Methods and systems for evaluating the condition of a water tank having a powered anode protection system. The water heater includes a storage tank to hold water, a powered anode, and a control circuit. The control circuit includes a variable voltage supply, a voltage sensor, and a current sensor. The control circuit is configured to compare a measured parameter to a threshold. In some constructions, the threshold is indicative of a condition of the storage tank at which the powered anode is no longer able to protect the storage tank from corrosion. In other constructions, the threshold is predicative of a potential failure of the storage tank caused by corrosion. In some constructions, the control circuit is configured to estimate a time remaining until the predicted failure of the storage tank. | 03-05-2009 |
20090061367 | APPLIANCE HAVING A SAFETY STRING - A gas-fired appliance is disclosed that includes a gas valve powered by a power source. A plurality of switching units, each responsive to a condition of the appliance, are arranged in series between the gas valve and the power source. Each switching unit includes an emitter, such as an emitter of an optocoupler, that is used to monitor the opened or closed status of a switch in the switching unit. When at least one switch opens, power to the gas valve is reduced preventing the gas valve from operating. However, because this reduced power is provided to each subsequent switching unit, each optocoupler can be monitored regardless of the opened or closed status of previous switching units. As such, one or more open switches can be detected simulataneously. | 03-05-2009 |
20090061368 | APPLIANCE HAVING LOAD MONITORING SYSTEM - An appliance is disclosed that includes an electrically operated load such as a gas-fired appliance having an electrically operated gas valve. A current sensing circuit is configured to sense the current provided to the load. Based upon this sensed current, it is determined whether the load is energized. Methods are also disclosed for monitoring the status of a current sensing circuit to determine the actual operating state of the load. | 03-05-2009 |
20090290989 | CONTROLLER FOR A MOTOR AND A METHOD OF CONTROLLING THE MOTOR - A method of controlling a motor operating a pumping apparatus of a fluid-pumping application. The pumping apparatus includes a pump having an inlet to receive a fluid and an outlet to exhaust the fluid, and the motor coupled to the pump to operate the pump. The method includes the acts of controlling the motor to operate the pump and monitoring the operation of the pump. The monitoring act includes monitoring a power of the motor, and determining whether the monitored power indicates an undesired flow of fluid through the pump. The method further includes the act of controlling the motor to cease operation of the pump when the determination indicates an undesired flow of fluid through the pump and zero or more other conditions exist. | 11-26-2009 |
20090290991 | CONTROLLER FOR A MOTOR AND A METHOD OF CONTROLLING THE MOTOR - A method of controlling a motor operating a pumping apparatus of a fluid-pumping application. The pumping apparatus includes a pump having an inlet to receive a fluid and an outlet to exhaust the fluid, and the motor coupled to the pump to operate the pump. The method includes the acts of controlling the motor to operate the pump and monitoring the operation of the pump. The monitoring act includes monitoring a power of the motor, and determining whether the monitored power indicates an undesired flow of fluid through the pump. The method further includes the act of controlling the motor to cease operation of the pump when the determination indicates an undesired flow of fluid through the pump and zero or more other conditions exist. | 11-26-2009 |
20100155386 | WATER HEATER AND METHOD OF OPERATING THE SAME - A storage-type water heater includes a tank for supporting water to be heated, a first heating bank including a first heating surface disposed within the tank, a first contactor connected to the first heating bank, a second heating bank including a second heating surface disposed within the tank, a second contactor connected to the second heating bank, and a controller for selectively operating the first contactor and the second contactor. | 06-24-2010 |
20110002792 | CONTROLLER FOR A MOTOR AND A METHOD OF CONTROLLING THE MOTOR - A pumping apparatus for a jetted-fluid system includes a pump having an inlet connectable to the drain, and an outlet connectable to the return. The pump is adapted to receive the fluid from the drain and jet fluid through the return. The pumping apparatus includes a motor coupled to the pump to operate the pump, a sensor connectable to the power source and configured to generate a signal having a relation to a parameter of the motor, and a switch coupled to the motor and configured to control at least a characteristic of the motor. The pumping apparatus also includes a microcontroller coupled to the sensor and the switch. The microcontroller is configured to generate a derivative value based on the signal, and to control the motor based on the derivative value. | 01-06-2011 |
Patent application number | Description | Published |
20120182146 | MERCHANDISE DISPLAY SECURITY DEVICE FOR HEADPHONES - A merchandise display security device for an article of merchandise having an audio cord includes an electrical control circuit for producing a sense loop in the audio cord, monitoring a non-alarming state and an alarming state of the sense loop, and activating an alarm in the event that the sense loop changes from the non-alarming state to the alarming state. In one embodiment, the device includes a security sensor adapted for being attached to a media player. The security sensor has an audio jack for receiving an audio plug on the audio cord and includes an audio connector cord having an audio plug for engaging an audio jack on the media player. The security sensor may be electrically connected to an alarming base by a sense cord and include a power adapter cord for providing power to the media player through the sense cord and the power adapter cord. | 07-19-2012 |
20120293330 | SYSTEMS AND METHODS FOR PROTECTING RETAIL DISPLAY MERCHANDISE FROM THEFT - Security systems and methods configured for use with an item of merchandise for retail display include a housing, at least one sensor carried by the housing and at least one output device carried by the housing. The security system further includes a controller carried by the housing and operably coupled to the sensor and to the output device. The controller is operable to determine a distance traveled by the item of merchandise from a retail display “home” position based upon a sensor input from the sensor, and to activate the output device based upon the distance traveled by the item of merchandise exceeding a threshold distance. The controller may utilize the at least one sensor in conjunction with an inertial navigation system (INS) and motion processing algorithms or techniques to determine the distance traveled by the item of merchandise from the retail display “home” position. | 11-22-2012 |
20130033380 | MERCHANDISE SENSOR AND METHOD FOR PROTECTING AN ITEM OF MERCHANDISE - A merchandise sensor for protecting an item of merchandise displayed on a merchandise display security device from theft includes sensor electronics and a sensor element operably coupled to the sensor electronics. The sensor element provides an output value in an initial stable state before an interaction state and in a subsequent stable state following the interaction state. The sensor electronics compares the output value of the sensor element in the subsequent stable state and the output value of the sensor element in the initial stable state to determine whether a change in the output value indicates an alarm condition. In the event that the output value of the sensor element in the subsequent stable state is not within a predetermined tolerance bandwidth of the output value of the sensor element in the initial stable state, the sensor electronics activates an alarm in response to the alarm condition. | 02-07-2013 |
20140335730 | SECURITY CONNECTOR - In one example, the connector includes a body portion configured to be connected to a cord and a connection portion engaged with the body portion and comprising a plurality of conductors. The connection portion includes a conductive shield electrically connected to a plurality of the conductors when the connection portion is not engaged with the article of merchandise, and the connection portion also includes at least one ground conductor that is not electrically connected to the remaining conductors and/or the conductive shield when the connection portion is not engaged with the article of merchandise. At least one of the conductors and/or the conductive shield is configured to cooperate with the ground conductor to define a sense loop when the connector is engaged with the article of merchandise, and interruption of the sense loop is indicative of a security event. | 11-13-2014 |
Patent application number | Description | Published |
20080210852 | Fiber optic security system for sensing the intrusion of secured locations - A sensor for a security system is disclosed to detect intrusions at one or more predetermined locations wherein each location includes a moveable member which must be moved in order to intrude the location. The system includes a fiber network routed in close proximity to one or more locations. The sensor comprises a sensor housing for being disposed at a location to detect a predetermined movement of the moveable member from a secure position to an unsecured position, and means for mounting the sensor housing in a stationary position at the location without a physical connection to the moveable member. The sensor housing includes a fiber inlet and a fiber outlet, and a fiber chamber for receiving a predetermined sensor fiber of the fiber network being routed through the sensor housing. The sensor has a sensor actuator for engaging the sensor fiber to generate an intrusion signal upon detecting predetermined movement of the moveable member, and causing the intrusion signal to be transmitted along the sensor fiber to a processor whereby the intrusion and location of the intrusion may be determined by the processor. Preferably, the sensor includes a magnetic actuator having a magnetic attraction to the moveable members whose interruption causes activation of the sensor and generation of the intrusion signal. | 09-04-2008 |
20090040046 | Double-end fiber optic security system for sensing intrusions - A security system is disclosed for detecting intrusions at a plurality of predetermined locations having moveable closure members. The system comprises a plurality of intrusion sensors disposed at the locations for detecting movement of the closure members. Primary and secondary optical fiber sensor lines are routed through the intrusion sensors, and primary and secondary scanning units pulse signals along the sensor lines and receive reflected signals back from the sensor lines. A processor processes the reflected signals to determine if a reflection and/or attenuation change has occurred in a reflected pulse signal signifying a prescribed level of unauthorized intrusion activity which matches a signature intrusion signal. In the event of a cut through in the sensor lines, the primary sensor line monitors the sensors downstream of the break, and the secondary sensor line is activated to monitor the sensors downstream of the break. | 02-12-2009 |
20090201153 | Fiber optic security system for sensing the intrusion of secured locations - A sensor for a security system is disclosed to detect intrusions at one or more predetermined locations wherein each location includes a moveable member which must be moved in order to intrude the location. The system includes a fiber network routed in close proximity to one or more locations. The sensor comprises a sensor housing for being disposed at a location to detect a predetermined movement of the moveable member from a secure position to an unsecured position, and means for mounting the sensor housing in a stationary position at the location without a physical connection to the moveable member. The sensor housing includes a fiber inlet and a fiber outlet, and a fiber chamber for receiving a predetermined sensor fiber of the fiber network being routed through the sensor housing. The sensor has a sensor actuator for engaging the sensor fiber to generate an intrusion signal upon detecting predetermined movement of the moveable member, and causing the intrusion signal to be transmitted along the sensor fiber to a processor whereby the intrusion and location of the intrusion may be determined by the processor. Preferably, the sensor includes a magnetic actuator having a magnetic attraction to the moveable members whose interruption causes activation of the sensor and generation of the intrusion signal. | 08-13-2009 |
20140139337 | ENTRANCE SECURITY SYSTEM - An entrance denial security system comprises an entrance barrier closing an entrance into a secured area having a plurality of structural tubular elements with hollow cores forming a rigid integral barrier. At least one optical fiber sensor line is laced through the hollow cores of the structural elements for detecting a fault condition signifying an unauthorized intrusion attempt. A processor in communication with the fiber sensor line generates a fault signal in response to a fault signal level. A communication device operatively associated with the processor communicates the fault signal and an alarm. The system also includes a plurality of tubular elements lying a common plane and the sensor line is routed through the tubular elements. In one instance, the tubular elements are PVC pipe. | 05-22-2014 |