Patent ID: 8910917

Claim:
A motor support comprised of: two or more cylindrical rails each having a substantially similar precise diameter and substantially smooth outer surfaces, such that the two or more cylindrical rails are arranged in a longitudinal orientation and substantially parallel to one another; a first cleat and a second cleat positioned substantially perpendicular to the one or more cylindrical rails, wherein the first cleat is positioned at one end of the two or more cylindrical rails and the second cleat is position at the opposing end of the two or more cylindrical rails; and a slidable carriage enveloping portions of the two or more cylindrical rails, wherein the slidable carriage is comprised of: one or more motor support plates; two or more glider tubes connected to a bottom side of the one or more motor support plates and having an external square cross-sectional shape and internal axial bores movably encompassing the two or more cylindrical rails, such that each of the two or more glider tubes have open end portions and center portions; bearing sleeves tightly press fitted in the end portions of the two or more glider tubes, wherein the bearing sleeves have axially extending bores of round cross-section having an inner diameter and a substantially square outer shape, the inner diameter being of a smooth surface and being of a predetermined size to substantially surround the substantially smooth outer surfaces of each of the two or more cylindrical rails such that the bearing sleeves may slide freely on the two or more cylindrical rails, and the substantially square outer shape being sized to substantially fit within the two or more glider tubes such that the end portions of the glider tubes and the bearing sleeves are substantially flush with one another; lubricant reservoirs located at a center portion of the two or more glider tubes, such that the lubricant reservoirs retain viscous lubricant to allow the two or more glider tubes to be self-lubricating as the bearing sleeves slide on the cylindrical rails; and a spring-loaded tension controlling means comprised of: a tension adjusting screw connecting through each of the first cleat and second cleat; a spring housing substantially surrounding the tension adjusting screw and having a first end opening and a second end opening of a diameter slightly greater than a diameter of a spring; a tensioning nut connected to the tension adjusting screw; a tensioning follower nut connected to the tension adjusting screw; the spring surrounded by the spring housing and surrounding the tension adjusting screw; and at least one gusset plate being substantially perpendicular to the one or more motor support plates and a second opening of the spring housing, wherein the at least one gusset further connects to the two or more glider tubes and substantially seals the spring within the spring housing.