Dynamic current-to-pneumatic converter and pneumatic amplifier
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 18, 2005
Issued Date -
N/A
app pub date -
Oct 26, 2000
filing date -
Jul 23, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dynamically balanced pneumatic relay amplifier and a current-to-pneumatic converter are disclosed. The relay has a balance plug, a supply plug positioned on top of the balance plug, a bead chain connecting the balance plug and the supply plug, and a vent plug positioned on top of the supply plug. The relay also includes a baffle positioned on top of the vent plug. The converter, used in an electro-pneumatic positioner, comprises a flat strip made of magnetic material located in proximity to a nozzle, and a flow regulator having a flat spring securing a plug in a seat within the regulator. The converter also includes a cantilevered flexure integrally secured to a molded spring support, a first bias spring positioned on a first side of the flexure, and a second bias spring positioned on a second side of the flexure. The thickness of the flexure is locally reduced in an area not integrated into the molded spring support.
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