F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
201/56
F04B 53/12 (2006.01) F04B 19/08 (2006.01)
Patent
CA 1203499
Abstract A hollow piston pump (10) for pumping animal waste ma- terial including paddles (55, 155, 255) to agitate waste material collected in a hopper (11) and aid in its transfer into the hollow piston (17), a pumping chamber (14) including a cylindrical tube (76), and/or a cylindrical hollow piston (17) having antifriction bearings (90) and a seal (91) between its outer surface and the cylindrical tube (76) of the pumping chamber (14).
415712
Acorn Equipment Corp.
Fetherstonhaugh & Co.
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