Backpack with removable wheels

Abstract

Rollers are fastened to a chassis which is removably held to a bottom of a backpack by hook and loop fasteners. The rollers are on legs which are rotatably mounted at one end so the rollers can be moved from a first, compact position to a second, expanded position to provide better stability to the backpack which rests on the rollers. Another hook and loop area on the backpack can be used to store the rollers and chassis when they are removed from the bottom of the backpack.

What is claimed is:  
     
         1 . A wheeled back pack, comprising: 
 a backpack;    at least one roller;    means for removably fastening the at least one roller to an exterior surface of a bottom the backpack.    
     
     
         2 . The back pack of  claim 1 , wherein the means comprise hook and loop fasteners.  
     
     
         3 . A wheeled backpack, comprising: 
 a backpack having a bottom and a side, with one of a hook or loop fastener fastened to the backpack using the hook or loop fastener;    a mounting chassis having the other of a hook and loop fastener fastened to the chassis so the chassis can be removably connected to the backpack;    at least one roller mounted to the chassis.    
     
     
         4 . The backpack of  claim 3 , wherein the at least one of the hook and loop fastener if fastened to an exterior surface of the bottom of the backpack.  
     
     
         5 . The backpack of  claim 3 , wherein the chassis comprises a plate with the other of the hook or loop fastener fastened to a first side of the plate.  
     
     
         6 . The backpack of  claim 5 , wherein there are a plurality of rollers connected to the chassis.  
     
     
         7 . The backpack of  claim 3 , wherein there are a plurality of rollers at least some of which are connected to at least one support which moves relative to the chassis to allow the support to change a position of the roller connected to that support.  
     
     
         8 . The backpack of  claim 3 , wherein there are four rollers each connected to a support having a first end rotatably fastened to the chassis.  
     
     
         9 . The backpack of  claim 3 , wherein there are four rollers each connected to a support having a first end rotatably fastened to the chassis to rotate in a plane to allow positioning of the wheels relative to each other parallel to that plane.  
     
     
         10 . The backpack of  claim 3 , wherein there are four rollers each connected to a support having a first end rotatably fastened to the chassis to rotate in a plane, the rollers and supports having a first position in which the supports are substantially parallel and a second position in which the supports are aligned along intersecting lines.  
     
     
         11 . The backpack of  claim 3 , wherein there are four rollers each connected to a support having a first end rotatably fastened to the chassis to rotate in a plane, the rollers and supports having a first position in which the rollers are adjacent each other, and a second position in which the rollers are spaced further apart than in the first position.  
     
     
         12 . The backpack of  claim 3 , wherein the backpack further has the at least one of the hook or loop fasteners at two locations, and each of sufficient size at each location to hold the chassis and rollers to the back pack.  
     
     
         13 . The backpack of  claim 3 , wherein the backpack has two shoulder straps for carrying the backpack and the chassis is removably fastened by the hook and loop fasteners to either a side or a bottom of the backpack.  
     
     
         14 . A method of fastening wheels to a backpack, comprising: 
 placing one of a hook or loop fastener on a backpack at a first location on a side, bottom or back of the backpack;    placing the other of a hook or loop fastener on a chassis;    fastening at least one roller to the chassis, the hook and loop fasteners being of sufficient size to hold the chassis to the back pack when the backpack rests on the rollers and is rolled during use of the backpack.    
     
     
         15 . The method of  claim 14 , further comprising the step of fastening each roller to a support movably extending from the chassis.  
     
     
         16 . The method of  claim 14 , further comprising fastening each roller to a support having one end movably fastened to the chassis so the rollers can be positioned relative to each other.  
     
     
         17 . The method of  claim 14 , further comprising, fastening a patch of the other of a hook or loop fastener to the backpack at a second location on a side, front or back of the backpack, and sizing the patch to hold the chassis and rollers.  
     
     
         18 . The method of  claim 14 , further comprising fastening a pulling strap to the backpack.  
     
     
         19 . The method of  claim 14 , further comprising fastening two shoulder straps to the backpack and located so a person's arms can fit through the arm straps and carry the backpack on a back of the person.