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

Claim 18:
19. A pump comprising:
a slide bracket configured to move longitudinally in a first downstream direction and a second upstream direction;
a first bracket spaced from the slide bracket, the first bracket comprising:
a rod bore extending into an upstream side of the first bracket; and
a cylinder bore extending into a downstream side of the first bracket;

a second bracket spaced from the first bracket, the second bracket comprising:
an inlet side and an outlet side;
a material inlet disposed in the inlet side;
a material outlet disposed in the outlet side; and
a material flowpath extending between the material inlet and the material outlet;

a cylinder having a first cylinder end and a second cylinder end, wherein the cylinder is retained between the first bracket and the second bracket;
a pump rod connected to the slide bracket and extending into the first bracket through the rod bore, the pump rod comprising:
a first rod end disposed proximate the slide bracket;
a second rod end disposed at an opposite end of a rod body from the first rod end, the second rod end including a fluid outlet extending into the second rod end; and
a flow path extending through the rod body between a fluid inlet extending into the rod body and the fluid outlet;

a piston mounted on the second rod end and disposed within the cylinder, wherein the piston includes an upstream side and a downstream side;
wherein the pump rod is configured to receive material through the fluid inlet and provide the material to the cylinder through the fluid outlet in the second rod end; and
wherein the pump rod is configured to drive piston, and the piston is configured to drive the material from the cylinder into the second bracket through the material inlet.