B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
222/63
B65G 53/00 (2006.01) F04B 15/02 (2006.01)
Patent
CA 1166204
ABSTRACT OF THE DISCLOSURE Apparatus for pumping a powdery or granular material has a first cylinder and a second cylinder parallel to each other and each having a front end and a rear end, a connector box connecting the respective rear ends of the cylinders for placing them in communication, a material inlet at the front end of the first cylinder, a material outlet at the front end of the second cylinder, a first piston in the first cylinder and a first piston rod connected thereto and extending out of the first cylinder, a second piston in the second cylinder and a second piston rod connected thereto and extending out of the cylinder, and a reciprocating drive connected to the piston rods for reciprocating the pistons simultaneously in the same directions within the respective cylinders, the pistons each having openings therethrough and a first one-way valve on the first piston normally closing the opening therein and opening when the first piston is moving in the forward direction and a second one-way valve on the second piston normally closing the opening therein and opening when the second piston is moving in the rearward direction.
384824
Nakashima Shigeo
Nakashima Seisakusho Co. Ltd.
Riches Mckenzie & Herbert Llp
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