Abstract: Transmitters or object identifiers are discloses that are able to radiate consistent power regardless of the object where the transmitters or object identifiers are placed. The transmitter or object identifier may include a vertical loop antenna. The loop plane of the vertical loop antenna is substantially perpendicular to the surface of the object where the transmitter or object identifier is placed. The transmitter or object identifier may include a folded vertical loop antenna where the loop plane of the vertical loop antenna is extended and folded to have additional loop planes. The antennas of the present invention enable the transmitter or object identifier to radiate consistent power regardless of the object where the transmitter or object identifier is placed and regardless of the orientation of the transmitter or object identifier.

Abstract: A location system comprises a location determining module adapted to receive a first signal and a second signal. The location determining module is adapted to associate one of the signals with the other signal provided the first and second signals are received within a selected time period of each other.

Abstract: Transmitters or object identifiers are discloses that are able to radiate consistent power regardless of the object where the transmitters or object identifiers are placed. The transmitter or object identifier may include a vertical loop antenna. The loop plane of the vertical loop antenna is substantially perpendicular to the surface of the object where the transmitter or object identifier is placed. The transmitter or object identifier may include a folded vertical loop antenna where the loop plane of the vertical loop antenna is extended and folded to have additional loop planes. The antennas of the present invention enable the transmitter or object identifier to radiate consistent power regardless of the object where the transmitter or object identifier is placed and regardless of the orientation of the transmitter or object identifier.

Abstract: Systems and methods for allowing the location of transmitter to be determined (approximated) without requiring its distance from a receiver to be precisely known. Methods for determining a location of a transmitter without precise distance calculations. In one embodiment, a method is disclosed having the steps of: for a receiver, estimate a first zone a first transmitter is in; for remaining receivers that can receive a given transmitter, each estimate a second zone a first transmitter is in; and determine if there are overlaps in any of the zones. In another embodiment a potential target area is defined wherein the location of a transmitter can estimated.

Abstract: A location system comprises a location determining module adapted to receive a first signal and a second signal. The location determining module is adapted to associate one of the signals with the other signal provided the first and second signals are received within a selected time period of each other.

Abstract: A circulating fluidized bed reactor includes a lower zone having a fluidization grid, primary and secondary air injection inlets, and fuel feed inlets, an upper zone, internal bubbling beds at the top of the lower zone collecting solid matter from recirculation internal to the reactor and delivering a fraction thereof to external bubbling bed heat exchangers close coupled with the walls of the reactor level with the internal beds. The external heat exchangers reject the solid matter into the lower zone after exchanging heat with an external fluid. The reactor is simple in structure and benefits from the advantages of bubbling external beds while maintaining conventional design in the lower zone.

Abstract: Apparatus for cooling the wall of a fluidized bed hearth in a middle join region of generally upsidedown V-shaped vertical right cross-section between the upsidedown truncated pyramid-shaped bottom portions of the furnace above two parallel floors and a top portion of rectangular right cross-section, having a front face and a rear face parallel to the ridge of the upsidedown V-shape and having side faces perpendicular to said ridge, said wall being provided with heat exchanger tubes conveying water or an emulsion of water and steam, wherein the heat exchanger tubes are essentially horizontal and disposed in the flanks of the upsidedown truncated pyramid-shaped lower portions in line with the upsidedown V-shape and open out into tubes lining the side faces perpendicular to the ridge thereof. This makes it possible to perform cooling by natural circulation.

Abstract: The present invention relates to an arrangement for supporting and guiding the skirt of a cyclone, and comprising at least three "shoe" components which pass through the cyclone body and the ends of which support the top portion of the skirt. By means of this disposition, the arrangement enables the skirt to be held at its periphery, thereby limiting deformation of the skirt. Preferably, the inner ends of the shoes support the top portion of the skirt via a horizontal annular flange provided on the skirt.

Abstract: A cyclone for separating a mixture of gas and solid particles by centrifuging into a fraction that is enriched in particles and a gaseous fraction that is depleted in particles, the cyclone comprising a cylindrical vessel into which a duct for injecting the mixture of gas and solid particles opens out tangentially, an axial duct for removing the gaseous fraction, means for removing the fraction that is enriched in particles, which means are situated in the bottom portion of the cylindrical vessel, gas injection means serving to fluidize the solid particle enriched fraction as a dense bed, and heat exchanger means for exchanging heat between the dense fluidized bed that is formed and a fluid to be vaporized and/or reheated, together with means for adjusting the level of the dense bed.

Abstract: An apparatus and method are disclosed for an IV pump which can act also as a passive infusion controller. The apparatus has a disposable flow chamber with two pumping subchambers connected by a first collapsible passageway. A pump drive is used to operate the pumping subchambers and includes a first control valve for depressing the first collapsible passageway to control flow between the subchambers and an outlet control valve for depressing an outlet collapsible passageway to control flow of infusate out of the flow chamber. The flow chamber has a base surface and first and second caps, each cap being spaced apart from the base surface and having means for attachment to one of two moveable connector rods. The caps each act as one side of the first and second pumping subchambers, respectively, the base surface being the other side. A flexible wall is connected to the base surface and to each of the caps providing the subchamber volumes therebetween.

Abstract: A pressure transducer having a first pair leads for receiving an excitation voltage and a second pair of leads between which it can supply a voltage corresponding to a pressure applied to it is provided with means for placing at least one electrical load between said first pair of leads. The leads are connected to a pressure monitor having means for indicating the pressure represented by the voltage between said second pair of leads and means for indicating an alarm condition when said signal indicates a pressure outside of a given limit. The monitor has local means for disabling the alarm indicating means and means for setting the indicated pressure to zero. The monitor also has means responsive to a first given current in said first pair of leads for disabling said means for indicating an alarm and means responsive to a second given current in said first pair of leads for causing said means for indicating pressure to indicate a zero pressure.

Abstract: An apparatus and method are disclosed for an IV pump which can act also as a passive infusion controller. The apparatus has a disposable flow chamber with two pumping subchambers connected by a first collapsible passageway. A pump drive is used to operate the pumping subchambers and includes a first control valve for depressing the first collapsible passageway to control flow between the subchambers and an outlet control valve for depressing an outlet collapsible passageway to control flow of infusate out of the flow chamber. The flow chamber has a base surface and first and second caps, each cap being spaced apart from the base surface and having means for attachment to one of two moveable connector rods. The caps each act as one side of the first and second pumping subchambers, respectively, the base surface being the other side. A flexible wall is connected to the base surface and to each of the caps providing the subchamber volumes therebetween.