Abstract: A cabin pressure control system comprising an automatic motor controller (AMC); and a manual motor controller (MMC) that comprises a motor configured to regulate cabin pressure; a cabin pressure sensor configured to determine a first set of cabin pressure data; a differential pressure sensor comprising first and second ports, the first port configured to obtain a second set of cabin pressure data and the second port configured to obtain a first set of ambient pressure data; processing circuitry coupled to the cabin pressure sensor and to the differential pressure sensor, the processing circuitry configured to receive the first set of cabin pressure data; determine a first set of differential pressure data, the first set of differential pressure data relating the second set of cabin pressure data with the first set of ambient pressure data; disable the AMC; and control the motor to regulate the cabin pressure.

Abstract: A power supply system includes a multitude of independent electrical systems each comprising one or more power blocks, wherein each power block is configured to provide a respective power output and a converter comprising a multitude of inputs coupled to the multitude independent electrical systems and comprising a multitude of outputs coupled to a multitude of independent loads, the converter configured to aggregate the power output of each of the multitude of independent electrical systems and to output direct current (DC) power to the multitude of independent loads through the multitude of outputs based on the aggregated power output. The power supply system includes a power controller coupled to the converter and configured to allocate power to each of the multitude of independent loads based on input power from each of the multitude of independent electrical systems and power consumption from each of the multitude of independent loads.

Abstract: The present invention relates to a plate device (10) for an electrochemical fuel cell stack having stacked cells and a corresponding fuel cell device. The plate device is provided per each cell (20) for distributing and collecting a fluid across planar dimensions of a cell (20). A transition section (11) of the plate device (10) forms a flat shaped flow cross-section for a fluid to be transferred in a planar direction of the plate device (10) in fluid communication between a port (30, 31, 32, 33) and the cell (20), wherein a plurality of flow features (14) is disposed within the transition section (11) and the transition section (11) is enclosed by a boundary (17). According to the invention, the plate device (10) has at least one support feature (15, 16) that is integrally formed with the boundary (17) and with at least one of outermost arranged flow features (14) out of the plurality of flow features (14) for strutting the flat flow cross-section in a thickness direction of the plate device (10).

Abstract: A system to induce electrical muscle relaxation for airway management. The illustrative system includes a power control system targeted to relax muscles associated with an airway channel, and more particularly, to assist in human intubation by placement of an endotracheal tube within the trachea of a patient, mask ventilation, and/or resolution of laryngospasm. The relaxation of the muscles is achieved through external stimulation of nerves through the skin by an output electrical current pattern applied by the power control system. The illustrative system is configured to independently regulate an output current frequency and an output current amplitude of the output electrical current pattern.

Abstract: The disclosure is directed to an independent manual control system of an all-electric cabin pressure control system (CPCS). The manual control system may include a momentary electrical switch to manually set the position of an outflow valve (OFV) along with a closed loop control to hold the cabin pressure at the pressure setpoint. The closed loop control of the manual control system is independent from the automatic pressure control functions of the all-electric CPCS.

Abstract: A lift-ready flowhead assembly which is generally formed of a flowhead assembly, a lifting yoke, and a lift sub. The flowhead assembly includes (i) a flowhead body having body threads and a side entry port, (ii) a swivel housing, (iii) a load collar tube rotatively supported in the swivel housing by a bearing assembly, and (iv) a ball valve positioned in said flowhead body and configured to block and unblock a central passage running through the load collar tube and the flowhead body. The lifting yoke includes (i) a yoke body having a center aperture, and (ii) opposing pad-eyes extending from the yoke body. The lift sub includes (i) a head section, (ii) a neck section having external neck threads, and (iii) a sub passage extending through the head and neck sections. The neck section of the lift sub extends through the center aperture of the yoke body and the neck threads engage the body threads of the flowhead body, thereby securing the lifting yoke to the flowhead assembly.

Abstract: A valve seat for a ball valve. The valve seat having a valve seat body with a circumferential concave seating surface configured to mate with a curvature of the valve ball. A seal pocket formed within the valve seat body, the seal pocket having (i) an throat formed in the concave seating surface, (ii) an outer pocket sidewall, and (iii) an inner pocket sidewall. A retaining groove positioned below the throat on either the outer pocket sidewall or the inner pocket sidewall and a flexible seal element shaped for positioning in the seal pocket. The seal element includes (i) an extended lip configured to rest within the retaining groove when the seal element is seated in the seal pocket, and (ii) a sealing face with an upper end laying below the valve seat's concave seating surface and a mid-portion extending upward above a curvature path of the concave seating surface.

Abstract: An image forming apparatus comprising a thermal printhead and a controller. The thermal printhead has heating elements. The controller is to receive an indicated print mode corresponding to a type of thermal medium to be used, determine a power profile based on the indicated print mode, and control power to be delivered to the thermal printhead based on the determined power profile.

Abstract: In some examples, a cabin pressure control and monitoring system includes an outflow valve and a manual control panel comprising a selector switch and configured to generate a signal, wherein a value encoded in the signal is dependent on a position of the selector switch. The cabin pressure control and monitoring system also includes a controller configured to receive the signal from the manual control panel, determine a target rate of change for a cabin pressure based on the value encoded in the signal, and control the outflow valve based on the target rate of change.

Abstract: A valve seat for a ball valve. The valve seat having a valve seat body with a circumferential concave seating surface configured to mate with a curvature of the valve ball. A seal pocket formed within the valve seat body, the seal pocket having (i) an throat formed in the concave seating surface, (ii) an outer pocket sidewall, and (iii) an inner pocket sidewall. A retaining groove positioned below the throat on either the outer pocket sidewall or the inner pocket sidewall and a flexible seal element shaped for positioning in the seal pocket. The seal element includes (i) an extended lip configured to rest within the retaining groove when the seal element is seated in the seal pocket, and (ii) a sealing face with an upper end laying below the valve seat's concave seating surface and a mid-portion extending upward above a curvature path of the concave seating surface.

Abstract: A method of actuating a valve which includes (i) a valve housing with two opposing stem apertures including a first diameter neck wall and a second, larger diameter shoulder wall; (ii) a valve stem positioned within each of the stem apertures, the valve stems including a neck section and a shoulder section engaging the neck wall and the shoulder wall, respectively; (iii) wherein the valve stems have (1) an overall length L which does not extend substantially beyond the stem aperture, and (2) a shoulder engagement length L2 which is at least 20% of L; (iv) wherein a diameter of the neck section is between about 1.5/1000 if an inch and about 7/1000 of an inch less than a diameter of the first diameter neck wall and a diameter of the shoulder section is between about 1.

Abstract: A valve seat for a ball valve. The valve seat having a valve seat body with a circumferential concave seating surface configured to mate with a curvature of the valve ball. A seal pocket formed within the valve seat body, the seal pocket having (i) an throat formed in the concave seating surface, (ii) an outer pocket sidewall, and (iii) an inner pocket sidewall. A retaining groove positioned below the throat on either the outer pocket sidewall or the inner pocket sidewall and a flexible seal element shaped for positioning in the seal pocket. The seal element includes (i) an extended lip configured to rest within the retaining groove when the seal element is seated in the seal pocket, and (ii) a sealing face with an upper end laying below the valve seat's concave seating surface and a mid-portion extending upward above a curvature path of the concave seating surface.

Abstract: A tool joint clamp which includes a clamp assembly and a stop ring. The clamp assembly has at least two die carriers, with each die carrier having a translating and pivoting link between the die carriers such that the die carriers may move toward and away from a centerline of the clamp assembly. The stop ring includes a ring body having a central aperture forming an internal sidewall, with at least a portion of the internal sidewall having splines. A cam surface and cam follower are positioned between the clamp assembly and the stop ring, with the cam surface and cam follower configured to urge the die carriers toward the clamp assembly's centerline when relative torque is applied between the clamp assembly and the stop ring.

Abstract: The disclosure is directed to an independent manual control system of an all-electric cabin pressure control system (CPCS). The manual control system may include a momentary electrical switch to manually set the position of an outflow valve (OFV) along with a closed loop control to hold the cabin pressure at the pressure setpoint. The closed loop control of the manual control system is independent from the automatic pressure control functions of the all-electric CPCS.

Abstract: In the specification and drawings a flowhead assembly is described and shown with a flow adapter positioned within a through bore of the flowhead assembly housing; a first ball valve and second ball valve located above the flow adapter; a spacer assembly positioned between the first and second ball valve; at least one side flow entry attachment fluidly connected with the through bore of the flowhead assembly. The sideflow entry attachment includes a first and second ball valve located in a central passage in the sideflow entry attachment housing, with a spacer assembly positioned between them; a flow guide insert is positioned above the ball valves and includes a flow path that is in fluid communication with the through bore of the flowhead assembly; a plug retains the flow guide insert within the central passage. Also described and shown is a frac head assembly including a flow adapter that has chamfered internal surfaces surrounding side entry apertures.

Abstract: A valve seat for a ball valve. The valve seat having a valve seat body with a circumferential concave seating surface configured to mate with a curvature of the valve ball. A seal pocket formed within the valve seat body, the seal pocket having (i) an throat formed in the concave seating surface, (ii) an outer pocket sidewall, and (iii) an inner pocket sidewall. A retaining groove positioned below the throat on either the outer pocket sidewall or the inner pocket sidewall and a flexible seal element shaped for positioning in the seal pocket. The seal element includes (i) an extended lip configured to rest within the retaining groove when the seal element is seated in the seal pocket, and (ii) a sealing face with an upper end laying below the valve seat's concave seating surface and a mid-portion extending upward above a curvature path of the concave seating surface.

Abstract: A system to induce electrical muscle relaxation for airway management. The illustrative system includes a power control system targeted to relax muscles associated with an airway channel, and more particularly, to assist in human intubation by placement of an endotracheal tube within the trachea of a patient, mask ventilation, and/or resolution of laryngospasm. The relaxation of the muscles is achieved through external stimulation of nerves through the skin by an output electrical current pattern applied by the power control system. The illustrative system is configured to independently regulate an output current frequency and an output current amplitude of the output electrical current pattern.

Abstract: In an audio processing system a center point stereo sound processor in combination with a digital transducer alignment sound processor converts regular left and right stereo audio source signals to sum and difference signals, enabling a center stage spatialized stereo acoustic image to be created directly from a forward-directed loudspeaker unit and a sideways-directed dipole loud speaker unit. The forward-directed loudspeaker unit includes one vertically-mounted loudspeaker. The sideways-directed dipole loudspeaker unit is located directly below and to the sides of the forward-directed loudspeaker unit and includes two speaker cones connected in parallel and wired out of phase with each other. The center point stereo sound processor receives a left and right, stereo, audio signal source and converts the left and right signals into sum and difference signals. The sum, left plus right signal drives the forward-directed loudspeaker unit.

Abstract: In the specification and drawings, a valve is described and shown having a first and second valve seat carrier, a valve seat associated with each valve seat carrier, and a valve ball between the valve seats. The valve further includes a stop mechanism operatively connected to at least a first valve seat, the stop mechanism limiting travel of the first valve seat towards the valve ball such that the valve ball may be push away from a sealing engagement with the first valve seat.

Abstract: Our audio cabinet includes a recess in a cabinet wall in which is seated a control panel comprising a rigid plate bent to form a first planar section and a second planar section connected together by a slanted planar section. An exposed face surface of the slanted planar section includes at least one socket for inserting a plug of a cable. The rigid plate has a configuration that is complementary to the configuration of a perimeter of the recess so the plate fits within the recess with the exposed face surface facing the one side of the enclosure. With the plate seated in the recess the socket faces the one side of the enclosure and the exposed face of the slanted section is offset a predetermined distance from said one side to provide clearance for the plug to be inserted into the socket. The dimensions of the recess and angles of the plate are arranged such that an inserted plug is protected from contact with the floor if the audio cabinet is toppled over.