Fluid handling – With indicator – register – recorder – alarm or inspection means – Plural
Reexamination Certificate
2011-02-08
2011-02-08
Hepperle, Stephen (Department: 3753)
Fluid handling
With indicator, register, recorder, alarm or inspection means
Plural
C137S554000, C251S129110
Reexamination Certificate
active
07882852
ABSTRACT:
A direct drive servovalve device includes (i) a servovalve motor having a stator and a rotor assembly configured to rotate relative to the stator, (ii) a valve member coupled to the rotor assembly, and (iii) a sensor assembly. The sensor assembly includes an interface configured to couple to a controller that controls the servovalve motor, a set of programmable Hall sensors coupled to the interface, and a support. The support (e.g., a ring-shaped collar or sleeve) supports the set of Hall sensors at an installation location which is (i) adjacent to the rotor assembly and (ii) fixed relative to the stator. The set of programmable Hall sensors is configured to provide a set of position signals to the controller through the interface. The set of position signals identifies a rotational position of the rotor assembly relative to the stator.
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Bessinger Russell
Coakley Kim
BainwoodHuang
Hepperle Stephen
Rost Andrew J
Woodward HRT, Inc.
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