Tilted Push-Pull Wheeled Luggage with a Removable Front Swingable Wheel with an Elongated Neck for the Removable Front Swingable Wheel
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.
This invention generally relates to luggage. In particular, the invention relates to a novel wheeled luggage that reduces the user's burden of lifting a portion of the wheeled luggage during transportation. Furthermore, the invention relates to a novel wheeled luggage which utilizes a removable front swingable wheel.
Wheeled luggage is a common method of carrying items for shippers and travelers. One common type of wheeled luggage is a “pullman” case. There are several variations of pullman cases. One type of pullman cases has two fixed wheels located in the bottom-rear portion and a pair of luggage legs in the bottom-front portion of the case. This type of pullman case also has a handle or a strap located in the front portion of the case. A user is required to “pull” the case by lifting the front portion of the case and pulling the case forward. The pullman case can either have a solid or flexible casing. One disadvantage of the pullman case is that the user has to lift the front portion of the case with a handle and then pull the case forward, which requires a directly proportional amount of pulling force relative to the weight of the case. Therefore, for pullman cases, increased weight of luggage requires a proportionally increased amount of pulling force from the user.
Another common type of pullman case has four wheels at the bottom of the case. They are designed to be pulled like a wagon with a handle or a strap in the front portion of the case. In order to pull the case ergonomically, the handle or the strap of the four-wheeled pullman is diagonally upward from the front portion of the case because a user is typically taller than the case. A Newtonian physics force diagram for the required diagonally-upward force suggests that the user is essentially lifting a portion of the weight of the case (i.e. a vertical vector component from the diagonally upward vector representing the net force). Therefore, heavier pullman cases assert substantial strain on the user's arm during transportation. As a real-world example, this drawback is apparent to a user in with a heavy pullman-type luggage at a large airport, where the user may be required to roll the luggage across hundreds or thousands of yards.
Furthermore, a conventional wheeled luggage which has one or more wheels in front of the rear wheels and a flat surface clearance height at a bottom surface is often inconvenient for a user. The flat surface clearance height typically requires the user to provide a vertical-lift force to a front portion of the conventional wheeled luggage to prevent tip-over and accommodate a smooth movement of the conventional wheeled luggage.
Therefore, a novel wheeled luggage which substantially reduces the stress on a user's arm is highly desirable. Furthermore, a novel wheeled luggage configuration which provide a variable surface clearance height for smoother movement of a wheeled luggage is also highly desirable.
SUMMARYSummary and Abstract summarize some aspects of the present invention. Simplifications or omissions may have been made to avoid obscuring the purpose of the Summary or the Abstract. These simplifications or omissions are not intended to limit the scope of the present invention.
A wheeled luggage case configured to be pushed and pulled by a user using a handle attached to the wheeled luggage case is disclosed. In one embodiment of the invention, the wheeled luggage case comprises 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.
Furthermore, another embodiment of a wheeled luggage case configured to be pushed and pulled by a user using a handle attached to the wheeled luggage case is disclosed. In one embodiment of the invention, the wheeled luggage case comprises 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.
Moreover, an elongated neck for a removable front swingable wheel attachable to a lower front portion of a wheeled luggage is also disclosed. In one embodiment of the invention, the elongated neck comprises 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.
Specific embodiments of the invention will now be described in detail with reference to the accompanying figures. Like elements in the various figures are denoted by like reference numerals for consistency.
In the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will become obvious to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well known methods, procedures, and/or components have not been described in detail to avoid unnecessarily obscuring aspects of the present invention. The detailed description is presented largely in terms of procedures, logic blocks, processing, and/or other symbolic representations that directly or indirectly resemble wheeled luggage and its various configurations. These descriptions and representations are the means used by those experienced or skilled in the art to most effectively convey the substance of their work to others skilled in the art.
Reference herein to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Further, the order of blocks in process flowcharts or diagrams representing one or more embodiments of the invention do not inherently indicate any particular order nor imply any limitations in the invention.
In general, embodiments of the invention relate to an apparatus for carrying items in a luggage. More specifically, embodiments of the invention relate to a wheeled luggage which can be used for a “push mode” and a “pull mode” by the user using a handle attached to the wheeled luggage.
Furthermore, embodiments of the invention enable the user to move the wheeled luggage in a push mode with significantly less effort than in a pull mode. More specifically, the invention alleviates the user from lifting a portion of the weight of the wheeled luggage by tilting the luggage backward (i.e. towards the user) and incorporating one or more “swingable” front wheels in lower front portion of the luggage.
In one embodiment of the invention, each swingable wheel is configured to rotate horizontally around a neck of the swingable wheel attached to a bottom portion of the wheeled luggage. The tilting of the wheeled luggage is achieved by using an elongated neck for each swingable wheel, thereby creating a higher front ground clearance relative to a lower rear ground clearance provided by fixed rear wheels for the wheeled luggage.
In one embodiment of the invention, an elongated neck (702, 703) of a swingable wheel (704) in
In one or more embodiments of the invention, the pair of fixed rear wheels (106) provide linear stability to movement of the wheeled luggage (103) and a swingable front wheel (112) provides a directional guidance to the wheeled luggage (103) depending on the user's applied force on a handle (101,102) attached to the wheeled luggage (103). In one embodiment of the invention, a pair of fixed rear wheel covers (110) covers some portions of the pair of fixed rear wheels (106). It is important to note that the wheeled luggage (103) is tilted backward (i.e. towards the user (111)) because an elongated neck creates a higher front clearance than a rear ground clearance created by the pair of fixed rear wheels (106). The elongated neck comprises a triangular neck portion (104) which enables an axis of rotation for the swingable front wheel (112) to make a perpendicular angle (7) with a flat surface. The elongated neck further comprises an additional neck portion (105) which contains the swingable front wheel (112). The additional neck portion (105) is horizontally swingable by rotating around the axis of rotation contained in the elongated neck, depending on a directional force applied by the user (111) to the handle (101, 102).
The perpendicular angle (7) enabled by a geometrical tilt provided by the triangular neck portion (104) is important because the perpendicular (7) angle provides generally even gravitational pressures on the swingable front wheel (112), which reduces rotation-hampering forces to the swingable front wheel (112) based on the directional force applied by the user (111). A zoomed-in diagram showing this key feature of the invention is also illustrated and described in detail for
Continuing with
An inherent advantage of the present invention comes from the push mode of wheeled luggage (103). Unlike a pull mode, in which the user is forced to lift a portion of the weight of the wheeled luggage, the push mode benefits from an inherent advantage in laws of physics. By applying the diagonal forward-downward force (i.e. push mode) instead of a forward-upward force (i.e. pull mode), the user leverages gravity and does not have to lift a portion of the weight of the wheeled luggage. Over long distances, the forward-downward force used during the push mode results in superior usability and efficiency for movement of the wheeled luggage, compared to the pull mode. Ease of movement of the wheeled luggage during the push mode is a key feature of the invention.
In one or more embodiments of the invention, the pair of fixed rear wheels (210) provides a linear stability to the movement of the wheeled luggage (203). An elongated neck creates a higher front clearance than a rear ground clearance created by the pair of fixed rear wheels (210). The elongated neck comprises a triangular neck portion (204) and an additional neck portion (205) which contains the swingable front wheel (206). The additional neck portion (205) is horizontally swingable by rotating around a vertical axis contained in the elongated neck, depending on a directional force applied by the user (211) to the handle (201, 202). Unlike the push mode, the pull mode requires the user (211) to apply the forward-upward force, Fu2 (209), to a handle (201, 202) which necessitates the user (211) to lift a portion of the weight of the wheeled luggage (203).
A simple Newtonian physics vector diagram (207, 208, 209) demonstrates this added burden to the user (211) for the pull mode. The net force applied by the user (211) is illustrated by a vector, Fu2 (208), which can be broken down into components, a horizontal vector, Fh2 (207), and a vertical vector, Fv2 (209). The horizontal vector, Fh2 (207) is responsible for pulling the wheeled luggage (203) forward. The vertical vector, Fv2 (208), essentially requires the user (211) to lift up a portion of the weight of the wheeled luggage (203). In essence, lifting up the portion of the weight of the wheeled luggage (203) is inefficient and unnecessary (i.e. in light of the push mode described for
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In one embodiment of the invention, the removable front swingable wheel (809) is attached to an additional neck portion (808) which is attached to the sliding plate (806). The additional neck portion (808) can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (809). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (802) has a higher front ground-clearance height relative to a rear ground-clearance height in an attached mode for the removable front swingable wheel (809), because the triangular neck portion (805) and/or the additional neck portion (808) provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (801).
Continuing with
In one embodiment of the invention, one or more fixed rear wheels (1101) provide stability for a straight-path movement of the wheeled luggage (1102). The one or more fixed rear wheels (1101) may be at least partially covered by one or more wheel covers (1110), depending on a particular embodiment of the present invention. Furthermore, in one embodiment of the invention, the additional neck portion (1105) can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1104). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1102) has a higher front ground-clearance height relative to a rear ground-clearance height because the triangular neck portion (1106) and/or the additional neck portion (1105) provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1101).
Continuing with
In one embodiment of the invention, one or more fixed rear wheels (1201A, 1201B) provide stability for a straight-path movement of the wheeled luggage (1202). The one or more fixed rear wheels (1201A, 1201B) may be at least partially covered by one or more wheel covers (1210A, 1210B), depending on a particular embodiment of the present invention. Furthermore, in one embodiment of the invention, the additional neck portion can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1204). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1202) has a higher front ground-clearance height relative to a rear ground-clearance height if the removable front swingable wheel (1204) is in an attached mode because the triangular neck portion (1206) and/or the additional neck portion provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1201A, 1201B). If the removable front swingable wheel (1204) is separated from the wheeled luggage (1202), then one or more luggage legs (1208A, 1208B) may provide a sufficient front ground clearance to make the overall ground clearance of the wheeled luggage (1202) level.
In one embodiment of the invention, one or more fixed rear wheels (1301A, 1301B) provide stability for a straight-path movement of the wheeled luggage (1302). The one or more fixed rear wheels (1301A, 1301B) may be at least partially covered by one or more wheel covers (1310A, 1310B), depending on a particular embodiment of the present invention. Furthermore, in one embodiment of the invention, the additional neck portion can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1304). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1302) has a higher front ground-clearance height relative to a rear ground-clearance height if the removable front swingable wheel (1304) is in an attached mode because the triangular neck portion (1306) and/or the additional neck portion provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1301A, 1301B). If the removable front swingable wheel (1304) is separated from the wheeled luggage (1302), then one or more luggage legs (1308A, 1308B) may provide a sufficient front ground clearance to make the overall ground clearance of the wheeled luggage (1302) level.
In one embodiment of the invention, the removable front swingable wheel (1409) is attached to an additional neck portion (1404) which is attached to the snap-fit male guide stand (1406). The additional neck portion (1404) can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1409). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1402) has a higher front ground-clearance height relative to a rear ground-clearance height in an attached mode for the removable front swingable wheel (1409), because the triangular neck portion (1405) and/or the additional neck portion (1404) provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1401). If the removable front swingable wheel (1409) is detached from the wheeled luggage (1402), a luggage leg (1410) may provide a sufficient front ground clearance to make the overall ground clearance of the wheeled luggage (1402) level.
In one embodiment of the invention, the removable front swingable wheel (1509) is attached to an additional neck portion (1504) which is attached to the snap-fit male guide stand (1506). The additional neck portion (1504) can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1509). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1502) has a higher front ground-clearance height relative to a rear ground-clearance height in an attached mode for the removable front swingable wheel (1509), because the triangular neck portion (1505) and/or the additional neck portion (1504) provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1501A, 1501B). If the removable front swingable wheel (1509) is detached from the wheeled luggage (1502), one or more luggage legs (1510A, 1510B) may provide a sufficient front ground clearance to make the overall ground clearance of the wheeled luggage (1502) level.
In one embodiment of the invention, the removable front swingable wheel (1609) is attached to an additional neck portion (1604) which is attached to the snap-fit female guide stand (1606). The additional neck portion (1604) can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1609). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1602) has a higher front ground-clearance height relative to a rear ground-clearance height in an attached mode for the removable front swingable wheel (1609), because the triangular neck portion (1605) and/or the additional neck portion (1604) provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1601). If the removable front swingable wheel (1609) is detached from the wheeled luggage (1602), a luggage leg (1610) may provide a sufficient front ground clearance to make the overall ground clearance of the wheeled luggage (1602) level.
In one embodiment of the invention, the removable front swingable wheel (1709) is attached to an additional neck portion (1704) which is attached to the snap-fit female guide stand (1706). The additional neck portion (1704) can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1709). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1702) has a higher front ground-clearance height relative to a rear ground-clearance height in an attached mode for the removable front swingable wheel (1709), because the triangular neck portion (1705) and/or the additional neck portion (1704) provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1701A, 1701B). If the removable front swingable wheel (1709) is detached from the wheeled luggage (1702), one or more luggage legs (1710A, 1710B) may provide a sufficient front ground clearance to make the overall ground clearance of the wheeled luggage (1702) level.
In one embodiment of the invention, the removable front swingable wheel (1809) is attached to an additional neck portion which is attached to the snap-fit male or female guide stand (1806). The additional neck portion can be configured to be horizontally “swingable” and can contain a vertical axis of rotation for the removable front swingable wheel (1809). Furthermore, in a preferred embodiment of the invention, the wheeled luggage (1802) has a higher front ground-clearance height relative to a rear ground-clearance height in an attached mode for the removable front swingable wheel (1809), because the triangular neck portion (1805) and/or the additional neck portion provides an elevated front ground clearance compared to a ground clearance provided by one or more fixed rear wheels (1801A, 1801B).
Continuing with
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims
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.
Type: Application
Filed: May 18, 2009
Publication Date: Sep 3, 2009
Inventors: Kyong-Soo Chung (Sacramento, CA), Hyo-Soon Chung (Sacremento, CA), Samuel Seungmin Cho (Fremont, CA)
Application Number: 12/467,979
International Classification: A45C 5/14 (20060101);