Patent ID: 11969935
Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. A nozzle for a 3D printing system, the nozzle comprising:
a flowpath with a material inlet and a material outlet;
a valve in fluid communication with the flowpath between the material inlet and the material outlet; and
a compensator in fluid communication with the flowpath in a location between the material inlet and the material outlet,
wherein the valve includes a first diaphragm moveable between an open state and a closed state, wherein in the closed state the first diaphragm is displaced and obstructs the flow path between the material inlet and the material outlet,
wherein the compensator includes a second diaphragm moveable between a contracted state and an expanded state, and
wherein the second diaphragm moves from the expanded state to the contracted state when the first diaphragm moves from the open state to the closed state such that a change in volume of the flowpath caused by the displacement of the first diaphragm is approximately equal to a change in volume of the flowpath at the second diaphragm.