Roller cage assembly

A roller cage assembly for use with a support rod comprising:

• a roller sleeve having a first end and a second end;
• a primary keeper having a passage for receiving the rod, and having an expandable gap for securing the support rod;
• a secondary keeper having a passage for receiving the rod, and having an expandable gap for securing the support rod;
• a primary hub having an inner hub, an outer hub, and a cavity;
• a secondary hub having an inner hub, an outer hub, and a cavity;
• and
• a tube connected between the primary inner hub and the secondary inner hub;
• wherein the cavity of the primary hub receives and allows rotational movement of the primary keeper, and has an inner aperture and an outer aperture, said outer aperture having a diameter slightly less than the diameter of the inner aperture;
• wherein the primary keeper has slip ridges to facilitate rotational movement of said primary keeper within the cavity of the primary hub;
• wherein the cavity of the secondary hub receives and allows rotational movement of the secondary keeper, and has an inner aperture and an outer aperture, said outer aperture slightly less in diameter than the diameter of the inner aperture;
• wherein the secondary keeper has slip ridges to facilitate rotational movement of said secondary keeper within the cavity of the secondary hub;
• wherein the outer hub of the primary hub is connected to the first end of the roller sleeve;
• wherein the outer hub of the secondary hub is connected to the second end of the roller sleeve;
• wherein the roller sleeve, the primary hub, the secondary hub, and the tube are arranged to define a sealed inner cavity, whereby liquid transfer into the inner cavity is prevented;
• and
• wherein the primary keeper has a joined slit membrane for maintaining a substantially constant degree of tension on the rod, and the secondary keeper has a joined slit membrane for maintaining a substantially constant degree of tension on the rod.

A roller cage assembly for use with a support rod comprising:

• a roller sleeve;
• a tube;
• and
• a pair of end hub members, each said end hub member comprising:
• an inner hub;
• an outer hub;
• a cavity;
• and
• a keeper;
• wherein each cavity receives and allows rotational movement of a corresponding keeper, each cavity having an inner aperture and an outer aperture, each outer aperture defined by an annular tab and having a diameter slightly less than the diameter of the inner aperture, said annular tab facilitating rotational movement of the keeper;
• wherein each keeper has:
• a passage for receiving the support rod;
• an expandable gap for securing the support rod;
• slip ridges to facilitate rotational movement of the keeper;
• and a joined slit membrane for maintaining a substantially constant degree of tension on the support rod;
• and
• wherein the roller sleeve, each end hub member, and the tube are arranged to define a sealed inner cavity, whereby liquid transfer into the inner cavity is substantially prevented.