Patent ID: 8544699

Claim:
An inductor pump system comprising: a pump system for dispensing a fluid from a container; a base for receiving the container; and a fluid activated ram for positioning the pump system axially with respect to the base, the fluid activated ram comprising: a cylinder comprising: an upper end; a lower end mounted to the base; and an interior; a piston comprising: a first end disposed within the interior of the cylinder; and a second end extending from the upper end of the cylinder and to which the pump system is mounted; wherein the piston comprises a non-round cross-sectional profile; a bearing assembly coupled to the cylinder and engaging the piston to permit the piston to slide axially from the cylinder and to prevent the piston from rotating within the cylinder; wherein the bearing assembly comprises: a bearing disposed between the cylinder and the piston, the bearing including: an outer periphery that faces the cylinder; and an inner periphery having a non-round profile to engage the cross-sectional profile of the piston; a cylindrical end cap connected to the upper end of the cylinder and positioned between the interior of the cylinder and the outer periphery of the bearing; and a first retaining ring coupled to the cylinder to axially secure the cylinder end cap to the cylinder; a first retaining pin connected to the cylinder end cap and the cylinder to prevent rotation of the cylinder end cap with respect to the cylinder; and an O-ring seal disposed between the cylinder and the end cap.