Electrically powered pump unit

Details Electrically powered pump unit Electrically powered pump unit

F - Mech Eng,Light,Heat,Weapons

04

B

310/38, 103/43

F04B 49/00 (2006.01) F04B 17/04 (2006.01) H02K 33/06 (2006.01)

Patent

CA 1333545

A pump unit comprises a pump piston (7;24) driven by a linear electric motor having induction and reaction members (11;31;131 & 12;32;132) with closely adjacent flat surfaces. A reaction member can be sandwiched between two induction members. Co-operating induction and reaction members extend radially from a rod connected to the piston, or to two axially spaced pistons, or are grouped tangentially around it. The piston or pistons are driven synchronously and so that constant force is applied by way of a control system which includes a trajectory generator and a controller responsive to selected inputs relating to pump performance characteristics and feedback signals derived from measured current flow and piston position.

593029

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