Abstract: A multi-stage regenerative rotary pump assembly includes a housing, and an elongated shaft received in the housing for rotation about a rotational axis. The shaft has a longitudinal axis aligned with the rotational axis. A rotary member is operatively connected to the shaft and dimensioned for receipt in the housing. The rotary member has opposite, first and second faces axially spaced from one another in a direction of the longitudinal axis. At least the first face of the rotary member includes a first pump stage having a first stage inlet and a first stage outlet in fluid communication therewith. At least the first face includes a second pump stage having a second stage inlet and a second stage outlet in fluid communication therewith, and the second stage inlet is configured to be in fluid communication with the first stage outlet.

Abstract: A kit for implanting a flexible multi-lead cardiac monitor for recording biosignals when the monitor is placed under the skin. The kit includes the monitor, an implantation tool for implanting the monitor under the skin, and optionally a surgical knife. The monitor exhibits an open-circular shape, is based on a flexible printed circuit board with at least two sensing electrodes, optionally a ground electrode, includes a main circuit based on the FPCB, and is free of a casing. The implantation tool exhibits an open-circular shape to reversibly receive the monitor, includes a base to reversibly accommodate the monitor, a handle connected to the base, and a slider reversibly insertable into the base. A process to make the monitor of the kit, the monitor obtainable according to the process, a process to monitor biosignals with the monitor, and the use of the kit, of the monitor and of the implantation tool.

Abstract: A fuel pump system (100) and associated method for supplying fuel from an associated fluid source (112) to an associated downstream use (102, 104) including for engine (i) start mode, (ii) run mode, and (iii) actuation mode are disclosed. The system has a pump (110) including a primary stage (116) having an inlet (114), and an outlet (120) that is configured to selectively supply pressurized flow for the (ii) run mode, and a regenerative stage (130) commonly driven with the primary stage to selectively provide pressurized fluid for the (i) start mode and the (iii) actuation mode.

Abstract: A multi-stage regenerative rotary pump assembly includes a housing, and an elongated shaft received in the housing for rotation about a rotational axis. The shaft has a longitudinal axis aligned with the rotational axis. A rotary member is operatively connected to the shaft and dimensioned for receipt in the housing. The rotary member has opposite, first and second faces axially spaced from one another in a direction of the longitudinal axis. At least the first face of the rotary member includes a first pump stage having a first stage inlet and a first stage outlet in fluid communication therewith. At least the first face includes a second pump stage having a second stage inlet and a second stage outlet in fluid communication therewith, and the second stage inlet is configured to be in fluid communication with the first stage outlet.

Abstract: A method for connecting a mobile device with a vehicle-based system is described. The vehicle based-system comprises a first device and a second device that are both in possession of a system key. For an initial connection request between the first device and the mobile device, a token pair comprising a plaintext token and an encrypted token has been provided. The encrypted token is obtainable by applying the system key to at least the plaintext token. The mobile device is connected with the vehicle-based system by receiving, for a subsequent connection request with the second device and from the mobile device, the token pair comprising the plaintext token and the encrypted token. The token pair is verified using at least the system key. The subsequent connection is accepted upon successful verification of the token pair.

Abstract: A pump bearing member is disclosed for use in a pump bearing assembly and a gear pump assembly.

Abstract: A centrifugal pump includes a selectable regenerative style pumping element, including a regenerative pump rotor and at least one side wall flow channel formed by a rotating disc. The regenerative pumping element is selectable between a first state in which the disc does not rotate with the impeller and a second state in which the disc rotates with the impeller.

Abstract: An engine fuel or pump system includes a centrifugal pump having an impeller for imparting energy to an associated fluid for an associated downstream engine fuel system. A regenerative start stage is in selective fluid communication with the pump. And ejector includes an inlet that communicates with the pump outlet and an outlet that communicates with the pump inlet. Further, a regulator valve is interposed between the pump outlet and the regenerative start stage that selectively regulates associated flow from the regenerative start stage. The associated method include directing flow from the centrifugal pump to a regenerative start stage in order to supply an associated downstream flow circuit. During low speed starting, a portion of the flow from the regenerative start stage is provided to an ejector that recirculates to an inlet of the centrifugal pump.

Abstract: A filter for a fluid system is designed to capture and retain large debris. The filter includes a structure that captures the debris, and due to the design, configuration, or conformation of the structure, the structure makes it difficult for the captured debris to break loose and thereby prevents repeated impact of the debris with a filter surface. Different embodiments form regions of reduced turbulence such as an angled annular wall, angled wall, or baffles, or a contoured basket in an inlet region that captures large debris, and retains the debris in the structure of the filter.

Abstract: A pump assembly includes a pump unit having a centrifugal pump and a variable pump supplying pressurized flow. A fuel control assembly receives flow from the pump unit and includes at least one metering valve and at least one throttling valve. A control for the variable pump receives first and second pressure signals indicative of a pressure differential across the throttling valve, or across the metering valve/throttling valve combination, for altering operation of the variable pump in response to the pressure differential.

Abstract: An integrated pressure plate and port plate, and method of forming same, for a pump includes a housing having a pumping chamber formed therein. The housing includes first and second metal pressure plate portions that form at least a portion of the pumping chamber wherein at least one of the first and second pressure plate portions has a hard coating formed of a different material than a remainder of the housing metal on a surface thereof where integrated ports are formed on surface(s) of the pressure plate portion(s). Surface irregularities relieve stresses and promote adhesion of the coating (e.g., tungsten carbide) to the underlying metal (aluminum alloy).

Abstract: An engine fuel or pump system includes a centrifugal pump having an impeller for imparting energy to an associated fluid for an associated downstream engine fuel system. A regenerative start stage is in selective fluid communication with the pump. And ejector includes an inlet that communicates with the pump outlet and an outlet that communicates with the pump inlet. Further, a regulator valve is interposed between the pump outlet and the regenerative start stage that selectively regulates associated flow from the regenerative start stage. The associated method include directing flow from the centrifugal pump to a regenerative start stage in order to supply an associated downstream flow circuit. During low speed starting, a portion of the flow from the regenerative start stage is provided to an ejector that recirculates to an inlet of the centrifugal pump.

Abstract: A multi-stage centrifugal pump assembly allows for multiple fixed ratio pressure levels. The multiple pressure levels permit optimization of actuation loops without the need for pressure regulators, and can be used directly by the actuators.

Abstract: A centrifugal pump includes a selectable regenerative style pumping element, including a regenerative pump rotor and at least one side wall flow channel formed by a rotating disc. The regenerative pumping element is selectable between a first state in which the disc does not rotate with the impeller and a second state in which the disc rotates with the impeller.

Abstract: A gear pump comprising a bearing and first and second high pressure feeds from a bearing lube supply source to a lube pad disposed on an inside diameter of the bearing. Each of the first and second high pressure feeds includes an orifice. At least one of the first and second high pressure feeds includes a valve configured to selectively control the feed path and orifice within which it is installed. A method of controlling flow to a gear pump bearing is also disclosed.

Abstract: A pump bearing member is disclosed for use in a pump bearing assembly and a gear pump assembly.

Abstract: A fuel system includes a pump unit having at least a fixed displacement pump supplying pressurized flow. A fuel control assembly receives flow from the pump unit and includes at least one metering valve and at least one throttling valve. A control (bypass valve control) for the fixed displacement pump receives first and second pressure signals indicative of a pressure differential across the throttling valve, or across the metering valve/throttling valve combination, for altering output from the fixed displacement pump in response to the pressure differential. In other embodiments, the pump unit includes a centrifugal pump and a fixed displacement pump that can be fully or partially redundant depending on sizing of the pumps, and the system requirements.

Abstract: A method for connecting a mobile device with a vehicle-based system is described. The vehicle based-system comprises a first device and a second device that are both in possession of a system key. For an initial connection request between the first device and the mobile device, a token pair comprising a plaintext token and an encrypted token has been provided. The encrypted token is obtainable by applying the system key to at least the plaintext token. The mobile device is connected with the vehicle-based system by receiving, for a subsequent connection request with the second device and from the mobile device, the token pair comprising the plaintext token and the encrypted token. The token pair is verified using at least the system key. The subsequent connection is accepted upon successful verification of the token pair.

Abstract: A multi-stage centrifugal pump assembly allows for multiple fixed ratio pressure levels. The multiple pressure levels permit optimization of actuation loops without the need for pressure regulators, and can be used directly by the actuators.

Abstract: An integrated pressure plate and port plate, and method of forming same, for a pump includes a housing having a pumping chamber formed therein. The housing includes first and second metal pressure plate portions that form at least a portion of the pumping chamber wherein at least one of the first and second pressure plate portions has a hard coating formed of a different material than a remainder of the housing metal on a surface thereof where integrated ports are formed on surface(s) of the pressure plate portion(s). Surface irregularities relieve stresses and promote adhesion of the coating (e.g., tungsten carbide) to the underlying metal (aluminum alloy).