Patent ID: 8894385

Claim:
A bi-directional pump, comprising: a pump housing, the pump housing comprising a pump outlet; a fluid pressurizer positioned in the pump housing and configured to provide fluid flow selectively in a first direction and a second direction; a first passage positioned in the pump housing and a second passage positioned in the pump housing; a junction fluidly positioned in the pump housing connecting the first and second passages to the pump outlet; a flow controller positioned in the pump housing to move relative thereto between a first position placing the first passage in fluid communication with the pump outlet via the junction when the fluid pressurizer provides fluid flow in the first direction, and a second position placing the second passage in fluid communication with the pump outlet via the junction when the fluid pressurizer provides fluid flow in the second direction; and a second travel limiter distinct from the pump housing, wherein the first passage comprises: a first passage bend; a first passage aperture opening into the first passage bend; and a first travel limiter configured to limit the travel of the flow controller so as to space the flow controller from the first passage aperture, wherein the second passage comprises: a second passage bend; and a second passage aperture opening into the second passage bend, the second passage bend is included in the second travel limiter, and the second travel limiter is configured to limit the travel of the flow controller so as to space the flow controller from the second passage aperture, and wherein the second travel limiter comprises: a first limiter aperture; and a second limiter aperture, the second passage bend is positioned between the first and second limiter apertures.