Tilted Push-Pull Wheeled Luggage with a Removable Front Swingable Wheel with an Elongated Neck for the Removable Front Swingable Wheel

Abstract

A wheeled luggage is configured to be pushed or pulled using a handle attached to the wheeled luggage. The wheeled luggage has a main luggage body with a plurality of fixed wheels and one or more swingable wheels in front of the plurality of fixed wheels. In one or more embodiments of the invention, one or more swingable wheels in front of the plurality of fixed wheels are easily removable and re-attachable by a user. Furthermore, each swingable wheel has an elongated neck attached or attachable on-demand to a lower front portion of the main luggage body, which creates a higher ground clearance (i.e. backward tilt) in the lower front portion of the wheeled luggage relative to a lower rear portion of the wheeled luggage. This backward tilt enables a user to push the wheeled luggage ergonomically by applying a “pushing” force to the handle.

1 . A wheeled luggage case configured to be pushed and pulled by a user using a handle attached to the wheeled luggage case, the wheeled luggage case comprising:
 a main luggage body with a higher front ground-clearance height relative to a rear ground-clearance height of the main luggage body, wherein the higher front ground-clearance height is achieved by a triangular neck portion which enables a vertical axis of swinging rotation for one or more removable front swingable wheels to form a perpendicular angle with a flat (i.e. horizontal) surface, and wherein the triangular neck portion contributes to a backward-tilt of the wheeled luggage case;   one or more fixed rear wheels located near a rear edge of a lower portion of the main luggage body, wherein each fixed rear wheel stabilizes a straight path movement; and   the one or more removable front swingable wheels located in front of the one or more fixed rear wheels in an attached mode, wherein the one or more removable front swingable wheels can be easily attached, detached, and/or re-attached by the user, and wherein the one or more removable front swingable wheels utilize a slide rail, a ball detent, a plurality of Velcro strips, and/or “snap-fit” male and female guides to be attached or detached to the lower portion of the main luggage body by the user.   
   
   
       2 . The wheeled luggage case of  claim 1 , wherein the backward-tilt of the wheeled luggage case is specified to indicate that the wheeled luggage case is tilted towards the user standing behind the wheeled luggage case. 
   
   
       3 . The wheeled luggage case of  claim 1 , wherein the one or more removable front swingable wheels located in front of the one or more fixed rear wheels are configured to change their directions freely depending on a direction of a force applied by the user. 
   
   
       4 . The wheeled luggage case of  claim 1 , wherein the slide rail, the ball detent, the plurality of Velcro strips, and/or the “snap-fit” male and female guides are at least partly implemented on a surface of the triangular neck portion, which is used in conjunction with the one or more removable front swingable wheels. 
   
   
       5 . The wheeled luggage case of  claim 1 , wherein the slide rail is used in conjunction with the ball detent to provide guiding and locking mechanisms for the one or more removable front swingable wheels. 
   
   
       6 . The wheeled luggage case of  claim 5 , wherein the slide rail assists guiding the one or more removable front swingable wheels to a lockable position on the lower portion of the main luggage body, and wherein the ball detent assists locking the one or more removable front swingable wheels to a fixed position on the lower portion of the main luggage body. 
   
   
       7 . The wheeled luggage case of  claim 1 , wherein the plurality of Velcro strips comprises a first Velcro strip on the lower portion of the main luggage body and a second Velcro strip on a top portion of the one or more removable front swingable wheels. 
   
   
       8 . The wheeled luggage case of  claim 7 , wherein the first Velcro strip and the second Velcro strip are configured to be adhered upon contact. 
   
   
       9 . The wheeled luggage case of  claim 1 , wherein the snap-fit male and female guides incorporate a locking mechanism for the one or more removable front swingable wheels, and wherein a surface of the one or more removable front swingable wheels has a snap-fit male or female guide and the lower portion of the main luggage body has a snap-fit male or female guide to accommodate a locked position of the snap-fit male and female guides. 
   
   
       10 . The wheeled luggage case of  claim 1 , wherein the one or more removable front swingable wheels enable the user to push the wheeled luggage case forward in any direction of the user's choice by applying a diagonal forward-downward force on the handle of the wheeled luggage case, and wherein the one or more fixed rear wheels provide a straight-line stability. 
   
   
       11 . The wheeled luggage case of  claim 1 , wherein the wheeled luggage case can be pulled by the user by further tilting the main luggage body towards the user, thereby detaching the one or more removable front swingable wheels from the flat surface and relying only on the one or more fixed rear wheels for pulling movement of the wheeled luggage case. 
   
   
       12 . The wheeled luggage case of  claim 1 , wherein the triangular neck portion is attached to another neck portion which is horizontally “swingable” and contains the vertical axis of swinging rotation for the one or more removable front swingable wheels. 
   
   
       13 . A wheeled luggage case configured to be pushed and pulled by a user using a handle attached to the wheeled luggage case, the wheeled luggage case comprising:
 a main luggage body with a higher front ground-clearance height relative to a rear ground-clearance height of the main luggage body, wherein the higher front ground-clearance height is achieved by a triangular neck portion which enables a vertical axis of swinging rotation for one or more removable front swingable wheels to form a perpendicular angle with a flat (i.e. horizontal) surface, and wherein the triangular neck portion contributes to a backward-tilt of the wheeled luggage case;   one or more fixed rear wheels located near a rear edge of a lower portion of the main luggage body, wherein each fixed rear wheel stabilizes a straight path movement; and   the one or more removable front swingable wheels located in front of the one or more fixed rear wheels in an attached mode, wherein the one or more removable front swingable wheels can be easily attached, detached, and/or re-attached by the user by utilizing a first Velcro strip on the lower portion of the main luggage body and a second Velcro strip on a top portion of the one or more removable front swingable wheels.   
   
   
       14 . The wheeled luggage case of  claim 13 , wherein the first Velcro strip and the second Velcro strip are at least partly implemented on a surface of the triangular neck portion, which is used in conjunction with the one or more removable front swingable wheels. 
   
   
       15 . The wheeled luggage case of  claim 14 , wherein the first Velcro strip and the second Velcro strip are configured to be adhered upon contact. 
   
   
       16 . The wheeled luggage case of  claim 13 , wherein the one or more removable front swingable wheels enable the user to push the wheeled luggage case forward in any direction of the user's choice by applying a diagonal forward-downward force on the handle of the wheeled luggage case, and wherein the one or more fixed rear wheels provide a straight-line stability. 
   
   
       17 . The wheeled luggage case of  claim 13 , wherein the wheeled luggage case can be pulled by the user by further tilting the main luggage body towards the user, thereby detaching the one or more removable front swingable wheels from the flat surface and relying only on the one or more fixed rear wheels for pulling movement of the wheeled luggage case. 
   
   
       18 . The wheeled luggage case of  claim 13 , wherein the triangular neck portion is attached to another neck portion which is horizontally “swingable” and contains a vertical axis of swinging rotation for the one or more removable front swingable wheels. 
   
   
       19 . An elongated neck for a removable front swingable wheel attachable to a lower front portion of a wheeled luggage, the elongated neck comprising:
 a triangular neck portion with a top surface of the triangular neck portion permanently attached or attachable on-demand to a bottom surface of the wheeled luggage, wherein the triangular neck portion enables a vertical axis of swinging rotation for the removable front swingable wheel to form a perpendicular angle with a flat (i.e. horizontal) surface, and wherein the triangular neck portion contributes to a backward-tilt of the wheeled luggage case; and   an additional neck portion attached or attachable on-demand to a bottom surface of the triangular neck portion, wherein the additional neck portion is horizontally rotational to enable a “swinging” motion of the swingable wheel and contains a vertical axis of swinging rotation, and wherein the triangular neck portion and the additional neck portion contribute to a backward-tilt of the wheeled luggage case.   
   
   
       20 . The elongated neck of  claim 19 , wherein the triangular neck portion and/or the additional neck portion utilize a slide rail, a ball detent, a plurality of Velcro strips, and/or “snap-fit” male and female guides to be attachable on-demand.