Flexible bags – Wall details – Multi-layer or ply
Reexamination Certificate
2000-01-27
2001-04-03
Garbe, Stephen P. (Department: 3727)
Flexible bags
Wall details
Multi-layer or ply
C220S495080, C224S645000, C383S002000, C383S113000, C383S903000, C428S131000
Reexamination Certificate
active
06210037
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a liner insert, and more specifically, a size adjustable removable liner insert for use in a variety of differently sized and shaped carrying bags.
2. Description of Related Art
Various kinds of soft bodied carrying bags such as soft bodied back packs (or backpacks), luggage, briefcases, portfolios, duffle bags, tool belts and the like are common place today. Often, soft bodied carrying bags are used for a wide array of purposes and within a diverse and wide range of areas such as educationally, industrially, athletically, militarily, recreationally and professionally, to name a few. Soft bodied carrying bags are generally constructed from at least one layer of synthetic woven or knitted fabric-like materials, canvas or fabrics, as well as a combination of these materials.
However, an inherent problem associated with soft bodied carrying bags are their susceptibility to puncture damage from pens, pencils, corners of books or other items having sharpened edges, protrusions, or irregular shapes capable of piercing, puncturing and/or tearing the soft bodied carrying bag. Therefore, there is a great need for a liner insert, preferably removable, that can be inserted and/or installed within a soft bodied carrying bag to prevent inherent puncture related damage caused by sharp edged objects; thereby increasing the useful life span of soft bodied carrying bags.
Examples of various kinds of liners, inner containers or the like, as taught in the prior art are as follows:
U.S. Pat. No. 5,628,436 to Jones et al. issued on May 13, 1997, discloses saddlebags with a removable rigid insulated liner. However, the rigid liner is not size adjustable to fit carrying bags of a different size.
U.S. Pat. No. 4,674,127 to Yamada et al. issued on Jun. 16, 1987, discloses a liner bag used in containers, and employed in the transporting of granular goods or bulk items such as grain and feed stocks. The liner disclosed in Yamada et al. is capable of effectively preventing sagging in the upper face of the liner bag body when installed on the inside of the container. However, the liner bag is not size adjustable to fit different size carrying bags or containers.
U.S. Pat. No. 4,622,693 to Mykleby issued on Nov. 11, 1986, discloses a protective collapsible liner bag, especially well suited to vacuum packaging or modified atmosphere packaging of food products. However, the liner is apparently not readily size adjustable to fit carrying bags of a different size.
U.S. Pat. No. 5,639,164 to Ishino et al. issued on Jun. 17, 1997, discloses a liner used in containers having box-shaped configurations. The liner is bag-shaped and has a ring portion, connection means, and a connection mechanism for connecting the ring portion to the container holding the liner. However, the liner does not appear to be readily size adjustable to fit containers of a different size.
None of the above inventions and patents, taken either singly or in combination, is seen to describe the instant invention as claimed.
SUMMARY OF THE INVENTION
Accordingly, it is a principal object of the invention to provide a removable one-piece, puncture resistant, flexible inner liner insert for use in a variety of soft bodied carrying bags. The liner insert comprises an adjustable variably sized bottom portion having at least four sides, at least four stress relief joints, a front flap attached to the first side of said bottom portion, a back flap attached to a second side of the bottom portion, and a first side flap and a second side flap attached to the third and fourth sides of the bottom portion respectively. Additionally, a plurality of size adjusting perforations can be located at each of the four joints and run inwardly at an approximately 45° angle from the joints toward the center of the bottom portion. The size adjusting perforations enable the size of the bottom portion of the liner insert to be appropriately adjusted, such that the size of the bottom portion of the liner insert substantially corresponds to the size of the bottom region of the soft bodied carrying bag the liner is to be placed within.
It is another object of the invention to provide a versatile one-piece inner liner insert that is removable and capable of being shaped to substantially conform to the body cavity of the carrying bag that the liner is to be placed within.
It is a further object of the invention to provide an inner liner insert that is puncture-resistant to sharp-edged objects, water-resistant, durable and flexible.
It is a further object of the invention to provide an inner liner insert having substantially circular stress relief joints on the bottom portion of the liner inserts to help prevent the liner insert from tearing at these joints.
Still, another object of the invention is to provide a liner insert that can be used with a variety of differently sized and shaped carrying bags due to an adjustable variably sized bottom portion that is capable of substantially corresponding to the bottom portion of the carrying bag.
It is an object of the invention to provide an inner liner insert that can be stored in either a flat or rolled up position when stored outside a carrying bag.
It is an object of the invention to provide improved elements and arrangements thereof in an apparatus for the purposes described which is inexpensive, dependable and fully effective in accomplishing its intended purposes.
These and other objects of the present invention will become readily apparent upon further review of the following specification and drawings.
REFERENCES:
patent: 3733024 (1973-05-01), Bolling, Jr. et al.
patent: 3948436 (1976-04-01), Bambara
patent: 4573202 (1986-02-01), Lee
patent: 4622693 (1986-11-01), Mykleby
patent: 4674127 (1987-06-01), Yamada et al.
patent: 4882213 (1989-11-01), Gaddis et al.
patent: 4883701 (1989-11-01), Rankin et al.
patent: 4891454 (1990-01-01), Perdelwitz, Jr.
patent: 4932556 (1990-06-01), Hui et al.
patent: 5149203 (1992-09-01), Sacks
patent: 5472279 (1995-12-01), Lin
patent: 5547075 (1996-08-01), Hoogerwoord
patent: 5628436 (1997-05-01), Jones et al.
patent: 5639164 (1997-06-01), Ishino et al.
patent: 5722710 (1998-03-01), Ralciani
Garbe Stephen P.
Litman Richard C.
LandOfFree
Back pack liner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Back pack liner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back pack liner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2550104