Abstract:
A supply source for delivery of a CO-containing dopant gas composition is provided. The composition includes a controlled amount of a diluent gas mixture such as xenon and hydrogen, which are each provided at controlled volumetric ratios to ensure optimal carbon ion implantation performance. The composition can be packaged as a dopant gas kit consisting of a CO-containing supply source and a diluent mixture supply source. Alternatively, the composition can be pre-mixed and introduced from a single source that can be actuated in response to a sub-atmospheric condition achieved along the discharge flow path to allow a controlled flow of the dopant mixture from the interior volume of the device into an ion source apparatus.
Abstract:
A pressure and flow altitude compensated shut off valve includes a valve body, a valve element, and an altitude compensation pilot valve. The valve body has an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port. The valve element is disposed within the flow passage and is responsive to fluid pressure at the inlet port to move between a closed position, in which fluid may not flow through the flow passage, and a plurality of open position between the closed position and a full-open position. The altitude compensation pilot valve is coupled to the valve body and is responsive to pressure variations at the second port to control the fluid pressure at which the valve element moves to the closed and open positions.
Abstract:
The auxiliary breathing flow channel apparatus for an oxygen mask for pilots and crew of an airplane includes a flow control device with closed and open positions to regulate flow through an auxiliary channel. A pressure sensor such as an aneroid capsule automatically closes the auxiliary channel upon a decrease in cabin pressure. A handle also allows a user to manually move the flow regulating means to a closed position.
Abstract:
The invention relates to an assembly including a pressurized gas storage tank and a control device for filling the tank with gas and/or extracting gas therefrom. The aforementioned tank includes: a hole which communicates with the interior of the tank, a filling and distribution head which is disposed at the hole and which includes a pre-expansion device which is at least partially integrated inside the volume of the tank, and a connection interface which is removably engaged with the gas supply and/or extraction control device such as to co-operate therewith. The invention is characterized in that the head includes an isolation member, such as a valve, which is housed at least partially inside the volume of the head and which can be accessed by an opening member that is external to the head through an access hole that is provided in the head. The above-mentioned control device includes a body having a connection end which is intended to be removably engaged with the connection interface, an opening member which can move in relation to the body and an actuation element which can move the opening member selectively between a retracted rest position and an operating position in which one end of the opening member projects out from the body beyond the connection end, such that the opening member can extend into the access hole in the head in order to open the isolation member.
Abstract:
A subsea valve actuator apparatus is disclosed for actuating a subsea valve. The valve actuator apparatus includes a housing which defines an enclosure and a rim. A cover cooperates with the rim for sealing the enclosure. A gearbox is disposed within the enclosure the gearbox including a worm wheel which is connected to the subsea valve for actuating the valve. The gearbox includes a seal which is disposed between the worm wheel and the housing for sealing the worm wheel relative to the housing so that lubricant disposed within the enclosure for lubricating the gearbox is sealed within the enclosure. A pressure compensator is disposed within the enclosure for maintaining pressure of the lubricant disposed within the enclosure at substantially the same pressure as the pressure of seawater outside the gearbox.
Abstract:
A pressure-regulating valve for opening and closing, based on atmospheric pressure, a valve body provided to a communication flow passage via which a primary chamber and a secondary chamber communicate inside a valve housing, with the aid of a pressure-receiving membrane that constitutes one surface of the secondary chamber, for regulating the pressure of a liquid fed to the primary chamber via an inflow port, and for feeding the liquid from the secondary chamber via an outflow port; the pressure-regulating valve wherein a cover is provided for allowing action of the pressure-receiving membrane and for covering the pressure-receiving membrane; and the cover has light-blocking properties.
Abstract:
A system for maintaining a desired cabin pressure in an aircraft includes a cabin-pressure control sub-system; a pressure relief valve for operation in event of failure or malfunction of the subsystem; a pressure relief valve actuator for operating the pressure relief valve; and a pressure relief valve control (PRVC) for producing commands for operation of the pressure relief valve actuator responsively to a first set of signal indicative of aircraft altitude and to presence of cabin-to-ambient pressure differential (ΔP) that varies from a desired ΔP by a predetermined amount
Abstract:
The invention relates to an assembly including a pressurized gas storage tank and a control device for filling the tank with gas and/or extracting gas therefrom. The aforementioned tank includes: a hole which communicates with the interior of the tank, a filling and distribution head which is disposed at the hole and which includes a pre-expansion device which is at least partially integrated inside the volume of the tank, and a connection interface which is removably engaged with the gas supply and/or extraction control device such as to co-operate therewith. The invention is characterized in that the head includes an isolation member, such as a valve, which is housed at least partially inside the volume of the head and which can be accessed by an opening member that is external to the head through an access hole that is provided in the head. The above-mentioned control device includes a body having a connection end which is intended to be removably engaged with the connection interface, an opening member which can move in relation to the body and an actuation element which can move the opening member selectively between a retracted rest position and an operating position in which one end of the opening member projects out from the body beyond the connection end, such that the opening member can extend into the access hole in the head in order to open the isolation member.
Abstract:
A pressure control system is disclosed. The control system in one embodiment includes a main body comprising a pilot chamber wherein an intake port and a discharge port are formed, and a spool comprising an upper slide and a lower slide. The spool in this embodiment is attached by a spring to the upper part of the main body. The exhaust apparatus pressure control system includes an absolute pressure sensor for detecting the pressure in the intake port and a differential pressure sensor for detecting the difference between the pressure in the intake port and atmospheric pressure; a control valve for supplying a pressure regulating gas to the pilot chamber; and a control circuit for sending switching signals to the absolute pressure sensor and the differential pressure sensor, and driving the control valve based on the output from the absolute pressure sensor or differential pressure sensor.
Abstract:
A cabin pressure control system (CPCS) software control logic modification may boost the voltage applied to a motor by applying a duty cycle offset to compensate for asymmetric motor loading. The motor may be part of an open-loop system for operating a butterfly valve that may regulate outflow from the aircraft cabin. In CPCS applications, the loading on the butterfly valve is unidirectional due to a mechanical spring and pneumatic loading, thus, causing asymmetric loading to the motor. By boosting the motor voltage when the motor is required to act against the asymmetric load, CPCS performance and robustness may be improved.