US 11,940,820 B2
Pressure-regulating valve with non-linear flow regulator
Zhenya Yourlo, North Ryde (AU); Mohammadreza Behi, North Ryde (AU); Peter Crichton, North Ryde (AU); and Norman Micheal Berry, North Ryde (AU)
Assigned to Memjet Technology Limited, Dublin (IE)
Filed by Memjet Technology Limited, Dublin (IE)
Filed on Apr. 5, 2022, as Appl. No. 17/713,516.
Claims priority of provisional application 63/174,988, filed on Apr. 14, 2021.
Prior Publication US 2022/0332124 A1, Oct. 20, 2022
Int. Cl. G05D 16/06 (2006.01); B41J 2/175 (2006.01)
CPC G05D 16/0644 (2013.01) [B41J 2/17596 (2013.01); G05D 16/0658 (2013.01); G05D 16/0661 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A pressure regulating valve for an inkjet printhead, said valve comprising:
a valve inlet;
a valve outlet;
a fluid flow path defined between the valve inlet and the valve outlet;
an orifice positioned in the flow path;
a movable valve member configured for regulating a fluid flow rate through the orifice;
a regulator chamber having the valve outlet and comprising a diaphragm operatively connected to the valve member, such that movement of the diaphragm moves the valve member relative to the orifice; and
a biasing mechanism for resiliently biasing the diaphragm away from the orifice, wherein the valve member is bell-shaped or trumpet-shaped, and whereby a curved outer surface of the valve member determines an extent of occlusion of the orifice.