Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1996-06-03
2000-02-01
Pihulic, Daniel T.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
H01H 3534
Patent
active
H00018325
ABSTRACT:
An electromagnetically transparent fluidic operator for adapting a conventional, mechanically operated electric switch to remote, fluidic operation includes a non-metallic housing for being rigidly attached to the electric switch with a chamber in the housing aligned with a mechanical actuator of the electric switch and a non-metallic, expandable reservoir mounted by the housing. The reservoir includes a nipple rigidly attached to the housing and a deformable diaphragm forming a seal with the nipple and being disposed in the chamber close to the mechanical actuator. The reservoir is pressurized with fluid from a remote location causing the diaphragm to deform and the reservoir to expand thereby applying a positive pressure or operating force against the mechanical actuator to operate the electric switch. A method of adapting an electric switch for remote, fluidic operation includes the steps of rigidly attaching the housing to a selected electric switch such that the chamber in the housing is aligned with the mechanical actuator, positioning the diaphragm in the chamber close to the mechanical actuator, rigidly attaching the nipple to the housing, establishing a seal between the nipple and the diaphragm to form a fluid-tight reservoir and supplying fluid to the reservoir to deform the diaphragm and apply the operating force against the mechanical actuator.
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Bristol Babcock Instruments/Systems, Model 506019, 506038 and 506039 Prese Switches for gauge pressures. Copyright date 1988, United States.
Eshelman William E.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
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