초록 ▼

A backpack with at least one strap that can quickly be retracted or extended to permit the user to easily put on or remove the backpack. The backpack includes a retracting mechanism and a locking device. The retracting mechanism allows the retracting strap to extend or retract as desired. The lockin

A backpack with at least one strap that can quickly be retracted or extended to permit the user to easily put on or remove the backpack. The backpack includes a retracting mechanism and a locking device. The retracting mechanism allows the retracting strap to extend or retract as desired. The locking device keeps the strap from extending or retracting while the backpack is being carried.

대표청구항 ▼

[ We claim:] [1.] A backpack adapted to be carried on a back of a user comprising:(a) a main bag having a rear section, said rear section having a first portion and a second portion,(b) at least two straps, including a retracting strap having a non-retractable end, a retractable end, and a length fr

[ We claim:] [1.] A backpack adapted to be carried on a back of a user comprising:(a) a main bag having a rear section, said rear section having a first portion and a second portion,(b) at least two straps, including a retracting strap having a non-retractable end, a retractable end, and a length from the non-retractable end to the retractable end, the non-retractable end being attached to the first portion of the main bag, the retractable end being attached to the second portion,(c) a retracting means for selectively extending and retracting the length of said retracting strap along a predetermined axis; and(d) a locking means for temporarily fixing position of the length of said retracting strap in response to a change in angle of said length relative to said predetermined axis, wherein, when worn on the back of a user, said locking means locks said retracting strap, said locking means including a buckle adapted and positioned proximate said retracting strap to stop said retracting means from extending and retracting the length of said retracting strap during carrying of the backpack, and to release said retracting means while the backpack is being put on and removed from the user's back.