Abstract: A method for calibrating a fuel control valve assembly including a valve and an actuator is disclosed. The method includes determining an encoder offset by actuating the valve until a predetermined value for the effective flow area is measured to obtain an actual calibration encoder count and comparing the actual calibration encoder count to an initial calibration encoder count. The method also includes adjusting an alignment encoder count and a maximum encoder count by an amount of the encoder offset. The method further includes associating the adjusted alignment encoder count with an alignment command value and the adjusted maximum encoder count with a maximum command value.

Abstract: A method for calibrating a fuel control valve assembly including a valve and an actuator is disclosed. The method includes determining an encoder offset by actuating the valve until a predetermined value for the effective flow area is measured to obtain an actual calibration encoder count and comparing the actual calibration encoder count to an initial calibration encoder count. The method also includes adjusting an alignment encoder count and a maximum encoder count by an amount of the encoder offset. The method further includes associating the adjusted alignment encoder count with an alignment command value and the adjusted maximum encoder count with a maximum command value.

Abstract: A method and apparatus for providing multiple spray zones to different subportions of a silverware basket within the wash chamber of a dishwasher.

Abstract: An automatic dishwasher having a tub defining a wash chamber for receiving utensils to be washed, a first rack located within the wash chamber, a second rack located within the wash chamber above the first rack, a rotatable spray arm associated with the second rack, a liquid recirculation system for selectively supplying liquid to the rotatable spray arm, and a drive system for driving the rotatable spray arm.

Abstract: An automatic dishwasher having a tub defining a wash chamber for receiving utensils to be washed and including a rotatable spray arm located within the wash chamber and a liquid recirculation system for selectively supplying liquid to the rotatable spray arm and where the rotatable spray arm is driven with a power unit.

Abstract: An automatic dishwasher comprises a housing defining a wash chamber for holding utensils to be washed, a movable sprayer fluidly coupled with a source of liquid and having at least one directionally-controllable outlet for controllably spraying liquid into the wash chamber, and a controller operably coupled to the movable sprayer to control the direction of the directionally-controllable outlet to spray liquid in at least one preselected location within the wash chamber.

Abstract: A sequencing diverter valve system in a washing appliance includes a fluid distribution manifold having a fluid inlet for receiving washing fluid and a plurality of fluid outlets. A fluid responsive rotating drive arm is connected to a drive reduction mechanism which, in turn, is operatively connected to a rotating sequencing valve for shifting the valve through a plurality of discrete positions at a rate of rotation less than the rate of rotation of the drive arm. As it rotates, the sequencing valve sequentially directs the washing fluid to a respective one or more of the plurality of fluid outlets.

Abstract: An automatic dishwasher having multiple spray nozzles located in the corner of a utensil rack in which case the wash liquid is sequentially sprayed from the corner spray nozzles.

Abstract: A method and apparatus for providing multiple spray zones to different subportions of a silverware basket within the wash chamber of a dishwasher.

Abstract: The invention provides an ion trap assembly. In general terms, the ion trap assembly contains: a) a segmented linear ion trap; b) an insulator disposed around the segmented linear ion trap; and c) a bonding material for attaching and spacing the insulator and said segmented linear ion trap. The ion trap assembly is generally made by mounting an elongated conductive workpiece to a set of rigidly connected insulators using a bonding material, and cutting the elongated conductive workpiece into a plurality of rods using wire electrical discharge machining. Also provided is a mass spectrometry system containing the precision segmented linear ion trap.

Abstract: A method and apparatus for calibrating a mass spectrometry system in which lock mass ions are introduced into the transport region of a mass spectrometer intermittently in a pulsed manner and analyte ions and/or lock mass ions are then detected at the mass analyzer. In one embodiment, analyte ions are also introduced into the transport region of the mass spectrometer from the analyte ion source intermittently in a pulsed manner.

Abstract: A method and apparatus for calibrating a mass spectrometry system in which lock mass ions are introduced into the transport region of a mass spectrometer intermittently in a pulsed manner and analyte ions and/or lock mass ions are then detected at the mass analyzer. In one embodiment, analyte ions are also introduced into the transport region of the mass spectrometer from the analyte ion source intermittently in a pulsed manner.

Abstract: The invention provides an ion trap assembly. In general terms, the ion trap assembly contains: a) a segmented linear ion trap; b) an insulator disposed around the segmented linear ion trap; and c) a bonding material for attaching and spacing the insulator and said segmented linear ion trap. The ion trap assembly is generally made by mounting an elongated conductive workpiece to a set of rigidly connected insulators using a bonding material, and cutting the elongated conductive workpiece into a plurality of rods using wire electrical discharge machining. Also provided is a mass spectrometry system containing the precision segmented linear ion trap.

Abstract: The present invention provides an apparatus and method for use with a mass spectrometer. The multimode ionization source of the present invention provides one or more atmospheric pressure ionization sources (e.g., electrospray, atmospheric pressure chemical ionization and/or atmospheric pressure photoionization) for ionizing molecules. A method of producing ions using the multimode ionization source is also disclosed. The apparatus and method provide the advantages of the combined ion sources without the inherent disadvantages of the individual sources. In an embodiment, the multimode ionization source includes an infrared emitter enclosed in an inner chamber for drying a charged aerosol. ESI/APCI multimode sources may include a corona needle shield and/or an auxiliary electrode.

Abstract: The invention provides a multipole device for a mass spectrometer system. In general, the multipole device contains a plurality of conductive rods each comprising a conductive layer, a resistive layer, and an insulative layer between the conductive and resistive layers. The invention finds use in a variety of applications, including ion transport, ion fragmentation and ion mass filtration. Accordingly, the invention may be employed in a variety of mass spectrometer systems.

Abstract: An atmospheric pressure ion source, e.g. for a mass spectrometer, that produces ions by atmospheric pressure photoionization (APPI). It includes a vaporizer, a photon source for photoionizing vapor molecules upon exit from the vaporizer, a passageway for transporting ions to, for example, a mass spectrometer system, and a means for directing the ions into the passageway. The center axis of the vaporizer and the center axis of the passageway form an angle that may be about 90 degrees. Included in the invention is a method for creating ions by atmospheric pressure photoionization along an axis and directing them into a passageway oriented at an angle to that axis.

Abstract: The invention provides a multipole device for a mass spectrometer system. In general, the multipole device contains a plurality of conductive rods each comprising a conductive layer, a resistive layer, and an insulative layer between the conductive and resistive layers. The invention finds use in a variety of applications, including ion transport, ion fragmentation and ion mass filtration. Accordingly, the invention may be employed in a variety of mass spectrometer systems.

Abstract: An atmospheric pressure ion source, e.g. for a mass spectrometer, that produces ions by atmospheric pressure photoionization (APPI). It includes a vaporizer, a photon source for photoionizing vapor molecules upon exit from the vaporizer, a passageway for transporting ions to, for example, a mass spectrometer system, and a means for directing the ions into the passageway. The center axis of the vaporizer and the center axis of the passageway form an angle that may be about 90 degrees. Included in the invention is a method for creating ions by atmospheric pressure photoionization along an axis and directing them into a passageway oriented at an angle to that axis.