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AIR-INTAKE SHUTOFF VALVES FOR ENGINES

  • US 20170298842A1
  • Filed: 04/18/2016
  • Published: 10/19/2017
  • Est. Priority Date: 04/18/2016
  • Status: Active Grant
First Claim
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1. An actuation system for a valve, comprising:

  • a housing having an end wall;

    a first piston slidably positioned within the housing;

    a second piston slidably positioned within the housing, between the first piston and the end wall;

    a piston rod coupled to the first piston and slidably extending through the second piston and the end wall, and configured to be coupled with the valve;

    a first spring arranged between the first piston and the second piston; and

    a second spring arranged between the second piston and the end wall, wherein the first spring and the second spring are configured to bias the valve to a closed position.

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