Cryogenic controller device
OwnerW. Edward Samuelsinventor
Life of this patent
Estimating the term…
Abstract
A device providing gas-powered logic responsive to a sensor such as a gas discharging type level probe and actuating valving controlling flow of liquid to be dispensed; and adapted to valving either for a volatile, especially cryogenic liquid utilizing the liquid's vapor pressure from a free gas space in a storage vessel top region as a power source both for control function and for the liquid transfer through a valve to a receiver, or with use of a separate gas supply for powering the probe, logic and amplifier, valving which applies liquid transferring pressure to a free gas space of a source vessel or vents the same for liquid transfer cut off, for volatile or non-volatile liquid.
Claims27
A gas energized fluidic controller unit responsive to gas pressure signals to produce a mechanical motion output, said controller unit comprising:
- a housing including a body and providing
- a first chamber for a sensor diaphragm, and
- a second chamber for a power diaphragm;
- a sensor diaphragm mounted in the body and spanning said first chamber to define
- a sensor gas space on one side of the sensor diaphragm;
- a sensor signal gas line connection on the housing
- communicating with said sensor gas space
- to shift the sensor diaphragm responsively to sensor signal gas pressure;
- a power diaphragm mounted in the body and spanning said second chamber to define on one side of the power diaphragm
- a power diaphragm operating gas space;
- an energizing gas connection on the body as a gas inlet and in constant communication with said operating gas space and sensor gas space a venting passageway in said body from said operating gas space to atmosphere;
- venting controlling means including said sensor diaphragm for controlling flow of gas through said venting passageway to atmosphere responsive to sensor signal gas pressure thereby varying gas pressure in said operating gas space to shift the power diaphragm;
- means supported by said housing including a shiftable element opposed to the said other side of the power diaphragm and shiftable by the power diaphragm for the mechanical motion output of the unit.
A gas energized fluidic controller unit responsive to gas pressure signals to produce a mechanical motion output, said controller unit comprising;
- a housing including a body block coaxially recessed at opposite ends affording a first and second recess, and a first and a second cover plate for said recesses thereby providing at said recesses respectively,
- a first chamber for a sensor diaphragm, and
- a second chamber for a power diaphragm;
- a sensor diaphragm mounted in and spanning said first chamber to define
- a sensor gas space on one side of the sensor diaphragm;
- a sensor signal gas line connection on the housing
- communicating with said sensor gas space
- to shift the sensor diaphragm responsively to sensor signal gas pressure;
- a power diaphragm mounted in and spanning said second chamber to define, on one side of the power diaphragm,
- a power diaphragm operating gas space;
- an energizing gas connection on the body as an energizing gas inlet, and passageway means in the housing putting said gas inlet in constant communication respectively
- with said operating gas space to provide operating gas pressure in the operating gas space and
- with said sensor gas space to provide sensor signal gas to said sensor signal gas line connection through the sensor gas space whereby variations in flow resistance of a sensor probe connected to the sensor signal gas line connection develop sensor signal gas back pressure variations appearing in said sensor gas space;
- a venting passageway in said body from said operating gas space to atmosphere;
- venting controlling means including said sensor diaphragm for controlling flow of gas through said venting passageway to atmosphere responsive to sensor signal gas pressure thereby varying gas pressure in said operating gas space to shift the power diaphragm;
- means supported by said second cover plate including a shiftable element opposed to the said other side of the power diaphragm and shiftable by the power diaphragm for the mechanical motion output of the unit.
Dependencies are inferred from the claim text.