초록 ▼

The present invention is drawn to a backpack structure, which structure allows a user to carry the backpack on his/her shoulders or, if desired, to transport the backpack in a wheeled fashion. The structure comprises a horizontally positioned base member which has a sliding front portion. An expanda

The present invention is drawn to a backpack structure, which structure allows a user to carry the backpack on his/her shoulders or, if desired, to transport the backpack in a wheeled fashion. The structure comprises a horizontally positioned base member which has a sliding front portion. An expandable and compressible backpack is mounted on the base member. In a retracted state, the base member and backpack are almost half their expanded size so that the structure may be conveniently stored in compact locations. Actuator mechanisms are conveniently located on the base member to allow a user to quickly and easily release the sliding portion and backpack for expansion. The sliding portion and backpack are easily pushed into a retracted position and are automatically locked therein.

대표청구항 ▼

The present invention is drawn to a backpack structure, which structure allows a user to carry the backpack on his/her shoulders or, if desired, to transport the backpack in a wheeled fashion. The structure comprises a horizontally positioned base member which has a sliding front portion. An expanda

The present invention is drawn to a backpack structure, which structure allows a user to carry the backpack on his/her shoulders or, if desired, to transport the backpack in a wheeled fashion. The structure comprises a horizontally positioned base member which has a sliding front portion. An expandable and compressible backpack is mounted on the base member. In a retracted state, the base member and backpack are almost half their expanded size so that the structure may be conveniently stored in compact locations. Actuator mechanisms are conveniently located on the base member to allow a user to quickly and easily release the sliding portion and backpack for expansion. The sliding portion and backpack are easily pushed into a retracted position and are automatically locked therein. [US_PATENT]US-3698608, 19721000, Entwistle, 224/159; US-D294429, 19880300, Vasquez, D03/214; US-4746044, 19880500, Arvizu et al., 224/155; US-5020709, 19910600, Hoaglan, 224/155; US-5205451, 19930400, Manzer, 224/161; US-5222641, 19930600, Medeiros, Jr., 224/161; US-5335834, 19940800, Verina, 224/159; US-5509590, 19960400, Medeiros et al., 224/161; US-6098856, 20000800, Reilly, 224/159