Pack frame convertible between a pack support and a chair

A pack frame convertible between a pack support and a chair, the convertible pack frame comprising:

• a primary element having opposite first and second ends;
• a secondary element pivotably mounted on the primary element to permit pivoting of the secondary element with respect to the primary element wherein the primary and secondary elements are movable between a pack configuration and a chair configuration, the pack configuration being characterized by the primary and secondary elements being oriented substantially parallel to each other, the chair configuration being characterized by the primary and secondary elements being in a skewed orientation with respect to each other;
• a securing band for securing the primary element to the body of a user when the primary and secondary elements are in the pack configuration;
• a seat for extending between the primary element and the secondary element when the primary and secondary elements are in the chair configuration, wherein the seat is mounted on a first one of the primary and secondary elements and the seat is removably fastenable to a second one of the primary and secondary element when the primary and secondary elements are in the seat configuration, wherein the seat is configured to hold the primary and secondary elements in the chair configuration when the seat is fastened to the second one of the primary and secondary elements, and wherein the seat is configured such that the seat must be unfastened from the second one of the primary and secondary elements for the secondary element to be moved from the chair configuration to the pack configuration;
• and additionally comprising an extended back rest assembly mounted on the primary element, the extended back rest assembly having a deployed condition and a stored condition, the deployed condition of the back rest assembly being characterized by the back rest assembly extending outwardly from one of the ends of the primary element, the stored condition being characterized by the back rest assembly being pivoted back upon the primary element so as not to extend from the one end of the primary element and wherein the back rest member has an intermediate condition between the deployed and stored conditions of the back rest member to form a support, the intermediate condition being characterized by the back rest member being in an orientation substantially perpendicular to a plane of the primary element, the back rest being supported in the intermediate condition by a supplemental support member extending from the primary element, the supplemental support member comprising a tie.