Systems and methods of securing a compliant member in a pump

A gear pump-head, comprising:

• a pump body and a magnet cup together defining a pump cavity, at least one inlet in fluid communication with the pump cavity, and at least one outlet in fluid communication with the pump cavity, the pump body having a longitudinal axis;
• at least one driving gear and a driven gear enmeshed with each other in the pump cavity;
• a suction shoe disposed on a surface of the pump body and situated about the driving gear and the driven gear, the suction shoe including an engaging portion comprising a concave or convex axially-aligned end surface facing in the axial direction of the pump body;
• a permanent magnet situated in the magnet cup and being coupled to the driving gear;
• and
• a pressure-absorbing member situated in the pump cavity, the pressure-absorbing member being configured to engage the concave or convex axially-aligned end surface of the engaging portion of the suction shoe such that the suction shoe is urged radially inwardly with respect to an outer edge portion of the surface of the pump body.

A gear pump-head, comprising:

• a pump body and a magnet cup together defining a pump cavity, at least one inlet in fluid communication with the pump cavity, and at least one outlet in fluid communication with the pump cavity;
• at least one driving gear and a driven gear enmeshed with each other in the pump cavity;
• a suction shoe disposed on a surface of the pump body and situated about the driving gear and the driven gear, the suction shoe including an engaging portion comprising a concave or convex axially-oriented end surface;
• a permanent magnet situated in the magnet cup and being coupled to the driving gear;
• and
• a pressure-absorbing member situated in the pump cavity, at least a portion of the pressure-absorbing member extending along a longitudinal axis of the pump between a surface of the pump body and an interior surface of the magnet cup when the pressure-absorbing member is in a non-deflected state, the interior surface of the magnet cup being configured to contact an upper surface of the pressure-absorbing member such that the pressure-absorbing member is captured between the surface of the pump body and the interior surface of the magnet cup to limit axial movement of the pressure-absorbing member in the pump cavity, the pressure-absorbing member being configured to engage the concave or convex axially-oriented end surface of the engaging portion of the suction shoe such that the suction shoe is urged radially inwardly with respect to an outer edge portion of the surface of the pump body.