Patent ID: 11931766
Assignee: GRACO MINNESOTA INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F  G | IPC B  G

Claim 15:
16. The dispensing system of claim 15, further comprising:
a controller configured to control dispense and reload cycles of the dispensing system, the controller comprising:
control circuitry; and
a memory encoded with instructions that, when executed by the control circuitry, cause the control circuitry to initiate and proceed through a dispense cycle and a reload cycle;

wherein during the dispense cycle, the control circuitry causes the first inlet valve and the second inlet valve to enter a closed state, causes the first outlet valve and the second outlet valve to enter an open state, and causes the motor to displace the slide bracket in a first direction to cause the first piston to drive the first material downstream through the first outlet valve and the second piston to drive the second material downstream through the second outlet valve; and
wherein during the reload cycle, the control circuitry causes the first outlet valve and the second outlet valve to enter a closed state, causes the first inlet valve and the second outlet valve to enter an open state, and causes the motor to displace the slide bracket in a second direction to cause the first piston and second piston to move in the second direction and increase an available volume in the first cylinder and the second cylinder;
wherein during the reload cycle, the first material is configured to flow to the first cylinder through the first flow path in the first pump rod and is provided to the first cylinder by the first fluid outlet in the first pump rod, and the second material is configured to flow to the second cylinder through the second flow path in the second pump rod and is provided to the second cylinder by the second fluid outlet in the second pump rod.