Convertible back pack frame

A back pack frame comprising

• (a) a main support structure including a pair of side supports, and a pair of cross-supports extending between said side supports;
• each said side support including (i) first and (ii) second side support bars, said second bar being substantially straight, and said first bar being straight and substantially parallel to said second bar over the majority of the length thereof, (iii) a pair of interconnecting bars interconnecting said first and second side support bars, and (iv) a pair of legs extending from said second bar away from said first bar, said legs and interconnecting bars being disposed in a common plane with said first and second bars;
• and
• (b) a pack supporting structure including shoulder straps for mounting said frame on a person's shoulders;
• and
• (c) means for mounting said pack supporting structure with respect to said main support structure so that said pack supporting structure is always laterally within said side supports of said main support structure, and so that it is movable from a first position wherein it is generally within the volume defined by said main support structure, to a second position wherein it is primarily without the volume defined by said main support structure, while still connected thereto, said mounting means comprising:
• a collar that surrounds and is slidable with respect to each said first side support bars;
• means for selectively releasably preventing movement of each of said collars with respect to said first side support bar with which it is associated;
• and means for mounting said pack supporting structure for rotation with respect to said collars about an axis generally transverse to said side support bars.

A back pack frame that is convertible into a chair having a seat and a back defining a chair sitting area, said frame comprising

• a main support structure;
• a pack supporting structure for supporting a pack having a front flap, the front flap of the pack being disposed on the opposite side of said pack supporting structure as shoulder straps attached to the pack supporting structure for mounting said frame on a person's shoulders;
• and
• means for mounting said pack supporting structure with respect to said main support structure so that said pack supporting structure is movable from a first position wherein it is generally coextensive with said main support structure, to a second position wherein said main support structure forms the chair seat, and said pack supporting structure forms the chair back with said shoulder straps mounting side of said pack supporting structure being disposed within the chair sitting area, and said pack front flap being disposed exterior the chair sitting area and accessible from exterior the chair sitting area with the frame in the chair-forming position.

A back pack frame that is convertible into a chair having a seat and a back;

• said frame comprising
• a main support structure;
• a pack supporting structure for supporting a pack, and including shoulder straps for mounting said frame on a person's shoulders;
• means for mounting said pack supporting structure with respect to said main support structure so that said pack supporting structure is movable from a first position wherein it is generally coextensive with said main support structure, to a second position wherein said main support structure forms the chair seat and said pack supporting structure forms the chair back;
• and
• flexible sheet means, and means for mounting said flexible sheet means on said main support structure and operatively attached to said pack supporting structure for automatically moving said flexible sheet means from a collapsed position to a taut position, wherein it defines the chair seat, upon movement of said pack supporting structure from said first position to said second position.

A pack frame comprising:

• (a) a main support structure including:
• a pair of side supports;
• a pair of cross-supports extending between said side supports;
• each said side supports including a first support bar, each said first bar being straight over the majority of the length thereof, and having the ends thereof formed as an arc of a circle and having extensions extending perpendicular to the straight portion thereof and forming legs, said first bar and leg extensions of each side support being coplanar;
• (b) a pack supporting structure including a pair of side bars and a plurality of cross-bars;
• (c) a collar surrounding and slidable with respect to each first bar, and including means for releasably preventing movement of each of said collars with respect to said first side support bar with which it is associated;
• (d) shaft means for mounting each pack supporting structure side bar for slidable movement with, and rotation, about an axis transverse to said side support bars, with respect to said collars;
• (e) flexible sheet means;
• and
• (f) means for operatively mounting said flexible sheet means to said main support structure for movement generally with said pack supporting structure.