A reciprocating pump includes a drive section and a pump section. The drive section
has a reciprocating coil assembly to which alternating polarity control signals
are applied during operation. A permanent magnet structure of the drive section
creates a magnetic flux field which interacts with an electromagnetic field produced
during application of the control signals to the coil. Depending upon the polarity
of the control signals applied to the coil, the coil is driven in one of two directions
of movement. A drive member transfers movement of the coil to a pump element which
reciprocates with the coil to draw fluid into a pump chamber and expel the fluid
during each pump cycle. The pump is particularly well suited to cyclic pumping
applications, such as fuel injection systems for internal combustion engines.