Abstract:
An aircraft carry-on bag fitted with transport casters or slides on a rigid bottom and pulled by a strap or rigid handle bridle fastened on both vertical sides of said bag near its top front edge.

Description:
BACKGROUND OF THE INVENTION 
     Airlines provide space beneath seats for storing carry-on articles. Usual dimension limitation for such articles is that the sum of the length plus width plus height should not exceed 45 inches. 
     A loaded bag falling within this dimension criterion can weigh over 40 pounds and become difficult to carry. These bags are therefore sometimes fitted with friction slides, small wheels or ball casters on their bottoms and pulled by means of a single strap or handle fastened to a clip or ring located in the middle of the leading or front section of the bag. To facilitate steering or directing the bag, front caster wheels are swivel-mounted while the rear wheels are rigidly mounted for stability. With friction slides, swivel-mounted front caster wheels and ball casters, the bags have a tendency to swerve back and forth as they are pulled by means of a single strap or handle. Such swerving usually causes the bag to overturn. 
     SUMMARY OF INVENTION 
     In the present invention the normally used single pull strap or handle fastened to the center of the front and leading side of the bag is replaced with two straps, each of which is bridle-fastened adjacent to the top edge of the sides of the bag; or by a rigid handle fastened by swivel pins on both sides of the bag near the top front edges. The leading ends of the two straps are joined by means of a buckle or some other device, or a bridle-attached single strap is used. 
    
    
     DRAWINGS 
     These and other features, aspects, and advantages will become better understood with reference to the following description, appended claims and accompanying drawings, where: 
     FIG. 1 is a side elevational view of a luggage container with a pull strap having features of the invention; 
     FIG. 2 is a front view of the luggage container of FIG. 1; 
     FIG. 3 is a bottom view of the luggage container of FIG. 1; 
     FIG. 4 is a perspective view of the luggage container of FIG. 1 showing the buckle unlatched; 
     FIG. 5 is a side view of another luggage container having features of the present invention; 
     FIG. 6 is a perspective view of yet another luggage container having features of the invention; 
     FIG. 7 is an exploded view of the handle of the container in FIG. 6; 
     FIG. 8 is a top view of the luggage container of FIG. 6; and 
     FIG. 9 is a front view of the luggage container of FIG. 6. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The invention will now be described in greater detail by means of reference to the drawings in which: 
     FIG. 1 shows a side view of the bag where Item 1 signifies the fabric of construction, which preferably should be 1000 denier waterproof Kordura or equivalent; Item 2 represents a flap for holding the carrying handles together, said flap to be fastened by means of Velcro or clips; Item 3 represents the handles; Item 4 represents the pull straps; Item 5 represents an adjustable strap buckle; Item 6 represents the preferred length of fastening the strap to the bag for improved stability when pulled; Item 9 represents a flap which covers the closing zippers and protects them from rain or snow; Item 10 represents a side pocket with zipper; Item 11 represents the front swivel-mounted transport wheels; Item 12 represents the rear mounted transport wheels which are not swivel-mounted. 
     Additional detail is provided in FIG. 2 where Item 7 illustrates the left zipper flap; Item 8 represents the center zipper flap; Item 10 represents a pocket with zipper; and Item 13 represents piping in the seams of the bag. 
     Additional detail is provided in FIG. 3 where Item 14 represents the rigid bottom of the bag required for the slides, transport wheel, or ball caster mountings, and which is constructed in a pleated manner so that the bottom is semi-collapsible and facilitates the squeezing of the bag into the allotted space. 
     FIG. 4 is provided to facilitate visual understanding of the bag construction. 
     Although the pull straps can be fastened to the sides of the bag by conventional means such as rivets, adhesive, buckles, clips or by stitching for a short length, it has been found that greater stability and less tendency to wobble during movement of the bag is obtained if the straps are fastened to the bag along a major portion of the available length of the bag at its upper edge. This length should comprise at least fifty percent of the bag length and the fastening should start within a few inches of the front panel of the bag. 
     FIG. 5 illustrates the situation where the flexible pull strap is replaced by a rigid handle. Item 15 represents the rigid handle fabricated from plastic, wood, metal rod or tube. This handle is shaped in dog-leg fashion as shown so that it can be pivoted into a snug position over the top of the bag (as shown by the phantom lines 15a). Item 16 is a pin or rivet fastened to the bag which serves as a swivel for Handle 15. Item 17 is a buckle or clip which is used to secure the handle to the top of the bag in the fold-back position. Item 18 illustrates a zippered side panel for opening the bag from its sides. In the case of this type of bag construction, the rigid handle can be fashioned in a single piece and Item 19 represents a convenience grip. 
     FIG. 6 illustrates the situation where the suitcase is opened in a clam shell fashion. In this case the rigid handle is fashioned in two pieces as illustrated by Items 20 and 21. These same items are clipped together by means of Item 22 which is a coupling similar to the type used on vacuum cleaner tubes. This coupling allows Item #1 to slip and join Item 21 at their ends. They are locked in place by means of a spring loaded ball illustrated as Item 23. When the handle is in its fold-back position it can be held in place with the clip strap illustrated by Item 17. If the suitcase is to be opened Item 23 is pressed to release the Item 22 clip and allow the handle to separate. 
     Item 24 illustrates a rigid bar fastened near the top of the side panel and to which the Item 16 swivel pin is connected. This rigid bar is the preferred method for fastening the pivot to the bag as it imparts a degree of stability in maneuvering the bag with the rigid handle. 
     FIGS. 8 and 9 are provided to further illustrate the bag construction and the rigid pull handle. 
     Although the present invention has been described in considerable detail with reference to certain preferred versions thereof, other versions are possible. For example, although a single type of coupling device has been illustrated, other types such as a spring loaded slide coupling, a bayonet clip type, a telescoping type, or a screw type can be used. 
     Although reference is made throughout this disclosure to airline carry-on bags, it is not the intent of this invention to limit its application to this capacity. This invention can be applied to all types and sizes of caster or slide-transported luggage for use on trains, buses, ships and all other vehicles of transportation. Therefore, the spirit and scope of the appended claims should not necessarily be limited to the description of the preferred versions contained herein.