Self-propelled luggage bag with detatchable foldable wheels

Abstract

The main body of the luggage bag has a special tilted shape that puts more weight at the top instead of at the bottom of the luggage bag. There are two sets of wheels. The first set of wheels is at the bottom of the luggage bag. The second set of wheels has a spring, screws or fixed positions attached to adjust the height. This second set of wheels can be foldable (into a box), or detachable from the luggage, and be attached to any existing traditional luggage bag. There is an “L” shape lever as part of the handle to release the stress of the human arm while dragging the luggage bag. The wheels can be connected and powered by electrical sources or batteries.

1 . The shape of the bag is tilted, so more weight is at the top of the bag. 
   
   
       2 . The handle has two 90 degree angles (“L” shape) to lower the front rod. 
   
   
       3 . The handle can be attached to the same side of the luggage bag, where the 2 nd  set of wheels is attached, or to the opposite side of the bag. 
   
   
       4 . The 2 nd  set of wheels is foldable and detachable. They can be folded into a box or protected by foldable racks. 
   
   
       5 . There is a spring attached to the 2 nd  set of wheels, so when the passenger drags the bag, the spring converts the gravity to a forward moving force. 
   
   
       6 . The 2 nd  set of wheels with a spring can be detached and compatible to all existing conventional luggage bags. 
   
   
       7 . Special electrical connection between the two sets of wheels. 
   
   
       8 . A 2 nd  set of wheels that is foldable and can be attached to the bottom of the luggage. 
   
   
       9 . The handle of the luggage bag and the 2 nd  set of wheels can act simultaneously, through mechanical or electronic devices and connections.