Fluidic switching devices

A composite fluidic device comprising:

• a high pressure rail transporting fluid at a first pressure;
• a low pressure rail transporting fluid at a second pressure that is less than the first pressure;
• and
• a fluidic device coupled to the high pressure rail and the low pressure rail, the fluidic device comprising:
• a gate comprised of at least one chamber whose volume expands with fluid pressure within the chamber causing a volume of the chamber to increase, wherein a high pressure state of the gate corresponds to a first chamber size, and a low pressure state of the gate corresponds to a second chamber size that is smaller than the first chamber size;
• a channel configured to transport a fluid from a source to a drain, wherein the source is an input that fluid enters the channel, and the drain is an output for the fluid in the channel, wherein the output provides a signal to an actuator in a haptic apparatus;
• and
• an obstruction that controls a rate of fluid flow between the source and the drain in accordance with the fluid pressure within the gate, the obstruction configured to induce a first flow rate of the fluid in the channel in accordance with the low pressure state of the gate and a second flow rate of the fluid in the channel in accordance with the high pressure state of the gate;
• wherein the gate includes a plurality of inextensible elements that have a first shape at the low pressure state and a second shape at the high pressure state and a block that at least partially blocks the channel, and wherein the plurality of inextensible elements are attached to a curling actuator that is coupled to the block, and the curling actuator adjusts a location of the block within the channel based in part on the fluid pressure in the gate.