Expandable Bag

Abstract

An expandable/collapsible bag that can be configured into three different sizes—small medium, and large. It is of cylindrical shape, has three interconnected chambers, a zipper running along its entire length, three handles on top, and two drawstrings. When the bag is in its large configuration, all chambers are expanded and accessible. The two side chambers can collapse inwards into the middle chamber, allowing the size of the bag to be reduced. This can be done by collapsing and pushing the material of each side chamber into chamber B past the line of their adjacent drawstrings. Once the collapsed material from each side chamber is completely inside chamber B, then, their adjacent drawstrings can be cinched or pulled tight to close the ends of the bag. This keeps the collapsed material from the side chambers inside the middle chamber and prevents the bag from expanding when in use.

Claims

1. A bag comprising: a multi-compartment cylindrical shaped duffel bag; one or more drawstrings; a zipper running the length of the long axis of the bag; and one or more handles.

2. The bag of claim 1, wherein the number drawstrings is one less than the number of compartments.

3. The bag of claim 2, wherein the number of compartments is three.

4. The bag of claim 3, wherein in its fully expanded position there are three chambers, chambers A, B, and C; and two drawstrings, drawstrings 1 and 2.

5. The bag of claim 4, wherein if the bag is not filled to capacity in its fully expanded position, then material from either side chamber, chamber A or chamber C, is collapsed inward to reduce the size of the bag; and once all the material from either side chamber, chamber A or chamber C, is past the line of their adjacent drawstring and in chamber B, their adjacent drawstring is cinched or pulled tight to close the end of the bag.

6. The bag of claim 3, wherein to get to the smallest or most fully reduced position, both side chambers, chamber A and chamber C, are collapsed inwards into chamber B, and both drawstrings are cinched to close both ends of the bag; and the material from chamber A and chamber C is now tucked and trapped within chamber B and the drawstrings are used to ensure the bag does not expand from this fully reduced position.

7. The bag of claim 1, wherein the bag is cylindrical in shape.

8. The bag of claim 1, wherein the bag has a single handle.

9. The bag of claim 1, wherein the bag has a single zipper.

10. A method for collapsing a duffel bag comprising the steps of: providing a duffel bag in a fully expanded position where there are three chambers, chambers A, B, and C; and two drawstrings, drawstrings 1 and 2; collapsing material from chamber A or chamber C into chamber B; cinching or pulling tight the drawstring adjacent to the collapsed chamber to close the end of the bag once all the material from the collapsed chamber is past the line of the drawstring and in chamber B.

11. The method of claim 10, comprising the following additional steps: collapsing material from chamber A and chamber C into chamber B; and cinching or pulling tight each of the two drawstrings to close each end of the bag once all the material from the collapsed chambers is past the line of the drawstrings and retained inside chamber B.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein form a part of the specification, illustrate the present invention and, together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the invention.

[0016] FIG. 1 illustrates a three chamber embodiment of the bag of the present invention in a fully expanded position where all the chambers are accessible.

[0017] FIG. 2 illustrates a three chamber embodiment of the bag of the present invention in a partially expanded position where a side chamber is being collapsed into its adjacent middle chamber.

[0018] FIG. 3 illustrates a two chamber embodiment of the bag of the present invention in a partially expanded position where a side chamber is being collapsed into its adjacent middle chamber.

[0019] FIGS. 4-6 illustrate a two chamber embodiment of the bag of the present invention in a partially expanded position where a side chamber is collapsed into its adjacent middle chamber and a drawstring is used to trap the collapsed material of the side chamber inside its adjacent middle chamber.

[0020] FIG. 7 illustrates a two chamber embodiment of the bag of the present invention in a partially expanded position where a second side chamber is collapsed into its adjacent middle chamber.

[0021] FIG. 8 illustrates a single chamber embodiment of the bag of the present invention in a partially expanded position where a second side chamber is collapsed into its adjacent middle chamber.

[0022] FIGS. 9-10 illustrate a single chamber embodiment of the bag of the present invention in a partially expanded position where a both side chambers are collapsed into the middle chamber and two drawstrings are used to trap the collapsed material of the both side chambers inside the middle chamber.

[0023] FIG. 11 illustrates a two chamber embodiment of the bag of the present invention in a partially expanded position where a side chamber is collapsed into its adjacent middle chamber and a drawstring is used to trap the collapsed material of the side chamber inside its adjacent middle chamber.

[0024] FIG. 12 illustrates a planar view of the three chamber embodiment of the bag of the present invention in a fully expanded position where all the chambers are accessible.

[0025] FIG. 13 illustrates a two chamber embodiment of the bag of the present invention in a partially expanded position where a second side chamber is collapsed into its adjacent middle chamber.

[0026] FIG. 14 illustrates a single chamber embodiment of the bag of the present invention in a partially expanded position where a second side chamber is collapsed into its adjacent middle chamber.

[0027] FIG. 15 illustrate a single chamber embodiment of the bag of the present invention in a partially expanded position where a both side chambers are collapsed into the middle chamber and two drawstrings are used to trap the collapsed material of the both side chambers inside the middle chamber.

DETAILED DESCRIPTION OF THE INVENTION

[0028] In the following detailed description of the invention of exemplary embodiments of the invention, reference is made to the accompanying drawings (where like numbers represent like elements), which form a part hereof, and in which is shown by way of illustration specific exemplary embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, but other embodiments may be utilized and logical, mechanical, electrical, and other changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims.

[0029] In the following description, numerous specific details are set forth to provide a thorough understanding of the invention. However, it is understood that the invention may be practiced without these specific details. In other instances, well-known structures and techniques known to one of ordinary skill in the art have not been shown in detail in order not to obscure the invention. Referring to the figures, it is possible to see the various major elements constituting the apparatus of the present invention.

[0030] Referring to FIGS. 1-15 the bag of the present invention is illustrated in a step-wise manner from the bag's expanded position in FIG. 1 to its fully tucked and smallest embodiment/position in FIGS. 10 and 15.

[0031] The design is an expandable/collapsible bag that can be configured into three different sizes—small medium, and large. It is of cylindrical shape, has three interconnected chambers 101, 102, and 103, a zipper 109 and 110 running along its entire length, three handles 104, 105, and 106 on top, and two drawstrings 107 and 108.

[0032] When the bag is in its large configuration as shown in FIGS. 1 and 12, all chambers, chamber A 101, chamber B 102, and chamber C 103, are expanded and accessible. Here, handle B 105 can be used to carry the bag since, in this configuration, handle B 105 is centered at the top. The two side chambers, chamber A 101 and chamber C 103, can collapse inwards into chamber B 102 as shown in FIGS. 2-9, allowing the size of the bag to be reduced. This can be done by collapsing and pushing the material of each side chamber, chamber A 101 and chamber C 103 into chamber B 102 past the line of their adjacent drawstrings, drawstring 1 107 for chamber A 101 and drawstring 2 108 for chamber C 103. Once the collapsed material from each side chamber A 101 and chamber C 103 is completely inside chamber B 102, then, their adjacent drawstrings 107 and 108 can be cinched or pulled tight to close the ends of the bag. This keeps the collapsed material from the side chamber A 101 and chamber C 103 inside chamber B 102 and prevents the bag from expanding when in use.

[0033] There are two medium configurations, 1 and 2, and collapsing any one of the two side chambers, chamber A 101 and chamber C 103 transforms the bag to one of the two medium configurations. There is no specific order as to which side chamber A 101 and chamber C 103 should be collapsed first. Since the bag is symmetric, both medium configurations are of equal size. However, visually, one has a cinched drawstring on one end and the other on the opposite end.

[0034] Collapsing only chamber A 101 transforms the bag to medium configuration 1, where the bag is the length of chamber B 102 and chamber C 103, and chamber B 102 and chamber C 103 are expanded and accessible. Here, handle C1 106 can be used to carry the bag since, in this configuration, handle C 106 is centered at the top. Collapsing only chamber C 103 transforms the bag to medium configuration 2, where the bag is the length of chamber A 101 and chamber B 102, and chamber A 101 and chamber B 102 are expanded and accessible. Here, handle A 104 can be used to carry the bag since, in this configuration, handle A 104 is centered at the top.

[0035] Collapsing both side chambers, chamber A 101 and chamber C 103, transforms the bag to its small configuration. In this configuration, the bag is only the size of chamber B 102, and only chamber B 102 is expanded and accessible. Here, handle B 105 can be used to carry the bag since, in this configuration, handle B 105 is centered at the top.

[0036] Although the present invention has been described in considerable detail with reference to certain preferred versions thereof, other versions are possible. Therefore, the point and scope of the appended claims should not be limited to the description of the preferred versions contained herein.

[0037] As to a further discussion of the manner of usage and operation of the present invention, the same should be apparent from the above description. Accordingly, no further discussion relating to the manner of usage and operation will be provided.

[0038] Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

[0039] Thus, it is appreciated that the optimum dimensional relationships for the parts of the invention, to include variation in size, materials, shape, form, function, and manner of operation, assembly and use, are deemed readily apparent and obvious to one of ordinary skill in the art, and all equivalent relationships to those illustrated in the drawings and described in the above description are intended to be encompassed by the present invention.

[0040] Furthermore, other areas of art may benefit from this method and adjustments to the design are anticipated. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents, rather than by the examples given.