Linear actuator pumping system

A pumping system comprising:

• a central housing having a sump;
• left and right side housings fixed to the central housing, each side housing having cooling fins and defining a bore and first and second passageways, the first passageway fluidly connecting the sump to the bore, the second passageway being proximate the cooling fins and fluidly connecting the bore to a top end of the central housing;
• a shaft extending through the central housing and through the bores of each side housing;
• a motor located in the central housing and configured to move the shaft axially;
• two end seals between shaft and each of the side housings, the end seals axially fixed to the side housings;
• two middle seals between the shaft and each of the housings, the middle seals axially fixed to the shaft, thereby defining a first chamber within the first bore, the first chamber having a first volume that varies based on an axial position of the shaft;
• and
• a set of one-way valves configured such that
• axial movement of the shaft towards the right side housing draws coolant from the sump, through the first passageway of the left side housing, into the bore of the left side housing and propels coolant from the bore of right side housing, through the second passageway of the right side housing, and across the motor back to the sump, and
• axial movement of the shaft towards the left side housing draws coolant from the sump, through the first passageway of the right side housing, into the bore of the right side housing and propels coolant from the bore of left side housing, through the second passageway of the left side housing, and across the motor back to the sump.