Corner member for a reformer exercise apparatus

A reformer exercise apparatus comprising:

• a rectangular frame having a head end member, a foot end member and a pair of spaced parallel side members;
• and
• a corner member joining at least each side member to one of the head and foot end members, the corner member comprising:
• an elongated hollow metal extrusion having an axis and, in cross section, a central corner portion and two leg portions each extending from the central portion at a right angle to an other of the two leg portions, each leg portion having an inner side wall spaced from an outer side wall parallel to the inner side wall and merging with the central portion, and an outer end wall joining the inner and outer side walls;
• the inner and outer side walls each having an inner surface facing the inner surface of the other side wall, and an opening through the outer end wall defining a space between the inner and outer side walls adjacent one end of the extrusion for receiving one end of one of the frame side members and end members;
• wherein the central corner portion has a circular cross section portion tangent to each outer side wall and a straight inner connecting wall joining the inner side wall of each leg portion;
• wherein at least one of the inner surfaces of the side walls in the space has discrete surface features adapted to grip and retain the one end of one of the side members and end members in the space when received through the opening;
• and
• wherein the outer side walls each has a pair of inwardly projecting spaced T shaped ribs for receiving therebetween an elongated fastener nut member therein, and wherein the T shaped ribs each has an end face with a plurality of discrete surface features adapted to grip and retain the one end of one of the side members and end members when received through the opening in the outer end wall.

A reformer frame having four corner members each joining a side member to one of a head end member and a foot end member, each corner member comprising:

• an elongated hollow metal extrusion having an axis and, in cross section, a central corner portion and two leg portions each extending from the central portion at a right angle to each other,
• each leg portion having an inner side wall spaced from an outer side wall parallel to the inner side wall and merging with the central portion, and an outer end wall joining the inner and outer side walls;
• the inner and outer side walls each having an inner surface facing the inner surface of the other side wall, and an opening through the outer end wall defining a space between the inner and outer side walls adjacent one end of the extrusion for receiving one end of one of the side members and end members;
• wherein the central corner portion has a circular cross section portion tangent to each outer side wall and a straight inner connecting wall joining the inner side wall of each leg portion;
• and
• wherein the outer side walls each has a pair of inwardly projecting spaced T shaped axial ribs for receiving therebetween an elongated fastener nut member therein, and wherein the T shaped axial ribs each has an end face having a plurality of discrete surface features adapted to grip and retain the one end of one of the side members and end members when received through the opening in the outer end wall.