Stability of Non-coercive Variational Inequalities

@inproceedings{Adly2002StabilityON,
  title={Stability of Non-coercive Variational Inequalities},
  author={Samir Adly and Emil Ernst and Michel Th{\'e}ra},
  year={2002}
}
A valve assembly is described of the so-called block and vent type wherein the valve is normally closed with the downstream side vented. When a pilot pressure is applied, it first closes the vent and then opens the valve partially. On application of a second pilot signal from another source or from a suitable time delay network, the valve opens fully. On release of the pilot pressures, the valve closes first and then opens the downstream vent.