Abstract: In accordance with the embodiments of the present invention, an alarm system is provided. The alarm system includes a system controller coupled to at least one initiation device. At least one textual notification device such as for example a signboard is coupled to the system controller. In one embodiment, the textual notification device is a multi-line signboard having an alarm input and a secondary input. The textual notification device is supervised, controlled, and powered integrally with the system controller. In an additional embodiment, an audible generator can be provided that provides an audible message in conjunction with the visual message on the textual notification devices.

Abstract: A water control fixture includes a housing having a plurality of ports defining a hot water inlet port, a cold water port, a fixture outlet port, and an auxiliary port, wherein water is dispensed from the housing via the fixture outlet port. A flow control unit is configured to be selectively positioned in fluid communication with different combinations of the plurality of ports, wherein the flow control unit has a main passage in fluid communication with the hot water inlet port, the cold water port, and the fixture outlet port. The flow control unit controls the flow of water from the hot water inlet port and the cold water port to the fixture outlet port. The flow control unit has an auxiliary passage in fluid communication with the auxiliary port and at least one of the hot water inlet port, the cold water port, and the fixture outlet port to perform an auxiliary function.

Abstract: A multistage pump assembly includes a manifold having an inlet port configured to be coupled to a supply pipe and an outlet port configured to be coupled to a discharge pipe. The inlet and outlet ports define an end suction, radial outlet port configuration. The pump assembly also includes a cartridge having a sleeve and plurality of pumping stages that define a pump stack received within the sleeve. An outer chamber is defined between the pump stack and the sleeve. Each of the pumping stages includes an impeller mounted along a pump shaft that rotates about a rotation axis. The cartridge is aligned horizontally such that the rotation axis is substantially horizontal. An end plate is positioned between the manifold and the cartridge and includes at least one cartridge engagement surface supporting the cartridge. The end plate is removably coupled to the manifold.

Abstract: A security system includes a system control panel for arming and disarming a security system. A door sensing unit is mounted proximate to a door to be monitored. The door sensing unit includes a door contact, a radio frequency (RF) transceiver, and a low frequency (LF) transmitter. The door contact is configured to detect open and closed states of the door. The RF transceiver is interconnected with the system control panel over a network and the LF transmitter transmits an LF data packet when the door contact detects the open state of the door. A disarm device having an LF detection circuit detects the LF data packet. The disarm device transmits an RF disarm data packet based on the LF data packet. The RF transceiver transmits a disarm message to the system control panel over the network to disarm the security system based on the RF disarm data packet.

Abstract: The IR sensor is configured to be mounted proximate to a door to be monitored. The IR sensor has an IR transmitter and an IR receiver. The IR transmitter has an active period and an idle period. The IR transmitter transmits control data packets which are provided by the processor during the active period. The IR receiver has an active period for detecting IR data and reflected data packets. Each of the reflected data packets has a packet IR reflectivity. The memory stores a door IR reflectivity associated with a door surface of the door, and the processor compares the packet IR reflectivity to the door IR reflectivity to determine at least a door position of the door.

Abstract: A security system comprises a system control panel for arming and disarming the security system. A door sensing unit comprises a first radio frequency (RF) transceiver interconnected with the system control panel over a network. The first RF transceiver is mounted proximate to a door that defines at least a portion of a perimeter around an area to be monitored by the security system. The first RF transceiver has an RF detection field proximate to the door. A disarm device comprises a second RF transceiver that automatically transmits a disarm device packet. The first RF transceiver receives the disarm device packet when the second RF transceiver is within the RF detection field. The first RF transceiver sends a disarm message to the system control panel over the network to disarm the security system based on at least the disarm device packet.

Abstract: An electron beam production and control assembly includes a vacuum chamber, a beam source, and a target. The target has an active section and an inactive section. The active section is adapted to generate x-rays when the beam impinges on the x-ray producing section. The electron beam production and control assembly also includes a focusing unit positioned along the chamber at a location intermediate the rearward end and the forward end. The focusing unit directs the beam towards the target in a converging manner to impinge on the target. The focusing unit sweeps the beam along a scanning path over the active section of the target. The focusing unit moves the beam to a retrace path on the inactive section of the target between sweeps of the scanning path to maintain ion accumulation in the beam between sweeps over the active section.

Abstract: A breathing air tank and valve assembly is provided for use in a self-contained breathing apparatus. The breathing air tank and valve assembly includes a pressure vessel and a cylinder valve for connection to the pressure vessel. The cylinder valve includes a valve body having an interior, and a first fitting adapted to connect the valve body directly to the pressure vessel, thereby creating a fluid connection to the interior of the valve body. The cylinder valve includes a second fitting that is an outlet adapted to connect the valve body to a pressure reducer assembly, and a third fitting that is an inlet having a check valve. The third fitting is adapted to connect the valve body to an external source of pressurized air and thereby provide a direct air path from the external source of pressurized air through the interior of the valve body to the pressure vessel.

Abstract: An upright vacuum cleaner having dual cleaning motor and fan units is provided having a cleaning head engagable with a floor and a suction nozzle and a brush roller rotatably mounted therein. A first motor and fan unit is mounted in the vacuum cleaner for producing suction in the suction nozzle and is operatively connected to the brush roller for rotating it. An upright housing is connected to the cleaning head, the housing having a handle for moving the vacuum cleaner along the floor during floor cleaning use. Contained in the housing are a dirt storage container, a passageway leading from the suction nozzle in the cleaning head to the storage container and a second motor and fan unit operatively associate with the storage container for drawing dirt laden air from the cleaning head through the passageway and into the storage container simultaneously with operation of the first motor and fan unit.

Abstract: A voltage controlled oscillator (VCO) is provided that includes an output buffer having a first buffer stage including a first transistor and a second buffer stage including a second transistor. The first and second transistors are connected in a cascaded emitter follower buffer arrangement.

Abstract: A security system comprises a surveillance unit comprising a visible light camera detecting video data from within a first field of view (FOV) and an infrared (IR) imager detecting IR data within the first FOV. An IR detection module determines whether at least a portion of the IR data is one of within a predetermined IR range, above a predetermined IR threshold, and below a predetermined IR threshold. A processor identifies a region of interest (ROI) within the video data to be further analyzed based on an output of the IR detection module.

Abstract: A security system comprises a system control panel for monitoring at least one device on a network. An infrared (IF) sensor located on the network has an IR transmitter and an IR receiver. The IR transmitter transmits control data packets and the IR receiver detects received data packets and IR data. A processor provides the control data packets to be transmitted by the IR transmitter. The processor determines that an external communication device is initiating communication with a target device over the network based on at least the received data packet received by the IR receiver. The processor establishes bi-directional communication over the network between the external communication device and the target device which is one of the processor, the system control panel and the at least one device.

Abstract: A frequency multiplier is provided that includes a switching component having a plurality of differential pairs of transistors. The frequency multiplier further includes a gain stage. A common mode feedback generated by the switching component is also provided to the gain stage.

Abstract: A valve assembly for a water circulation system includes a bypass valve with an inlet and an outlet that permits recirculating flow of water from a hot water line of the water circulation system. The valve assembly also includes a shut-off valve with a valve body having a hot water inlet and a hot water outlet configured to be coupled to a fixture of the water circulation system. The shut-off valve is located proximate the fixture and operating in an open position allowing water to flow to the hot water outlet and a closed position restricting water from flowing to the hot water outlet. The shut-off valve is configured to move automatically from the open position to the closed position in a controlled manner to limit discharge, from the hot water outlet, of water having a temperature below a desired level.

Abstract: A security system comprises a system control panel for arming and disarming the security system. A door sensing unit comprises a first radio frequency (RF) transceiver interconnected with the system control panel over a network. The first RF transceiver is mounted proximate to a door that defines at least a portion of a perimeter around an area to be monitored by the security system. The first RF transceiver has an RF detection field proximate to the door. A disarm device comprises a second RF transceiver that automatically transmits a disarm device packet. The first RF transceiver receives the disarm device packet when the second RF transceiver is within the RF detection field. The first RF transceiver sends a disarm message to the system control panel over the network to disarm the security system based on at least the disarm device packet.

Abstract: A method is provided for presenting occupancy information in a fire alarm system. The method includes obtaining event data indicative of an emergency event within a zone of a premises, obtaining count information indicative of a number of individuals within the zone of the premises, and displaying the event data and the count information for the zone simultaneously.

Abstract: A system and method for controlling a radar antenna are provided. The method includes generating a first single beam antenna pattern, generating a second single beam antenna pattern and transmitting the first and second single beam antenna patterns. The method further includes using phase detection to determine angular information for a detected object based on a phase difference of received signals.

Abstract: A disarming system for an RFID tag or an IRID tag having a magnetically operated sensor or switch includes a permanent magnet, wherein the permanent magnet is configured to activate the magnetically operated switch or sensor in the RFID tag or IRID tag when the RFID tag or IRID tag is brought into proximity of the permanent magnet. The disarming station also includes a receiving station configured to disarm a security system when the magnetically operated switch or sensor in the RFID tag or IRID tag is activated.

Abstract: Methods and systems for a flexible hose assembly are provided. The flexible hose assembly includes a core tube including a substantially fluid-impervious body including an inner surface and an outer surface, and an aramid sleeve including aramid yarn, the aramid sleeve circumferentially covering the core tube.

Abstract: A vacuum cleaner power head (40) for vacuum cleaning and having two counter rotating agitators 52 and 54. Motor (60) rotates agitators (52) and (54) through transmission (70), and also rotates suction fan (65) to provide suction air to the rotary brush agitators. Exterior housing 48 and inner housing (49) provide air suction passageways to direct suction air through fan (65) and out of the housing to a dirt collection bag (34). Self-propelled function is provided by using user force on handle (32) to create differential contact friction between the two counter-rotating rotary brush agitators so that a net traction force is generated that propels power head (40) in the direction the user is pushing.