Convertible beach chair and transport device

A folding combination wheeled device comprising:

• a rigid base frame comprised of a pair of substantially parallel first bar members each having a distal end and a proximal end, the first bar members being foldable around a central first pair of rotatable hinges so as to provide a folded configuration and an unfolded configuration of the base frame, wherein a distance between the first bar members in the folded configuration is approximately equal to a folded length of the first bar members in the folded configuration, and an unfolded length of the first bar members is approximately double the folded length;
• a rigid secondary frame comprised of a pair of substantially parallel second bar members each having a distal end and a proximal end, the second bar members having a length approximately equal to the folded length of the first bar members and being rotatably attached to the distal ends of the first bar members through a second pair of rotating hinges at the proximal end of the second bar members;
• a first approximately rectangular handle attached to the proximal end of the first bar members and rotatable around an upper handle joint with respect to the first bar members;
• a second approximately rectangular handle attached to the distal end of the second bar members and rotatable around a lower chair joint with respect to the second bar members;
• and
• a pair of wheels respectively rotatably mounted to a pair of extension arms that are rigidly attached to each of the second pair of rotatable hinges;
• the device having a dolly mode, a long flat chair mode, a short flat chair mode, a reversed tall back chair mode, a reversed short back chair mode, and a folded mode;
• wherein, in the dolly mode:
• the first bar members are in the un-folded configuration forming a vertical back for the device;
• the second bar members are approximately perpendicular to the first bar members;
• and the second handle forms a lower foot for the device;
• wherein, in the long flat chair mode:
• the first and second bar members are configured as in the dolly mode, with the second bar members forming a back for the device while the first handle forms a lower foot for the device;
• wherein, in the short flat chair mode:
• the first bar members are in a folded configuration;
• the second bar members are approximately perpendicular to the first bar members;
• the second bar members form a back for the device;
• and a pair of descending legs form a lower foot for the device;
• wherein, in the reversed tall back chair mode:
• the first bar members and the second bar members are configured as in the dolly mode, with the first bar members forming a long chair back for the device, and the second handle forming a lower foot for the device;
• wherein, in the reversed short back chair mode:
• the first bar members are in the folded configuration forming a short chair back for the device;
• and the second bar members and second handle are configured as in the tall back chair mode;
• and
• wherein, in the folded mode:
• the first bar members are in the folded configuration;
• the second bar members are approximately parallel to the first bar members;
• and the first and second handles are folded and also approximately parallel to the first bar members.