F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
103/29
F04C 9/00 (2006.01) F04B 15/02 (2006.01) F04C 13/00 (2006.01)
Patent
CA 1065188
ABSTRACT OF THE DISCLOSURE A piston pump for conveying cement has a piston moveable in an annular working chamber to save space. To reduce sealing problems, the piston is displaced to and fro along a circular path in the working chamber between end positions, and a control device located immediately adjacent the end positions and interrupting the circular path of movement of the piston connects the working chamber in front of the piston to an outlet passage and behind the piston to an inlet passage.
273969
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