Diaphragm actuators having adjustable actuation force

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United States of America Patent

PATENT NO 9874292
SERIAL NO

14216125

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Abstract

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Diaphragm actuators having adjustable actuation force are disclosed herein. An example apparatus includes a spring seat coupled to a diaphragm of an actuator. The spring seat is to contact a spring and is to be coupled to a stem. The diaphragm is to displace the stem based on a force provided to the diaphragm, and the stem is to control a fluid valve. The example apparatus also includes an adjuster to adjust an amount of force provided to the spring seat by the spring.

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Patent Owner(s)

  • FISHER CONTROLS INTERNATIONAL LLC

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adams, Daniel Martin Marshalltown, US 6 18
Arnold, David Anthony Marshalltown, US 8 41

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