EP1051928B1 - Sac à dos - Google Patents

Sac à dos Download PDF

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Publication number
EP1051928B1
EP1051928B1 EP00202350A EP00202350A EP1051928B1 EP 1051928 B1 EP1051928 B1 EP 1051928B1 EP 00202350 A EP00202350 A EP 00202350A EP 00202350 A EP00202350 A EP 00202350A EP 1051928 B1 EP1051928 B1 EP 1051928B1
Authority
EP
European Patent Office
Prior art keywords
backpack
front wall
shell
wall
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00202350A
Other languages
German (de)
English (en)
Other versions
EP1051928A1 (fr
Inventor
Jonas Blanking
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global Act AB
Original Assignee
Global Act AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global Act AB filed Critical Global Act AB
Priority claimed from EP97948082A external-priority patent/EP0971608B1/fr
Publication of EP1051928A1 publication Critical patent/EP1051928A1/fr
Application granted granted Critical
Publication of EP1051928B1 publication Critical patent/EP1051928B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C7/00—Collapsible or extensible purses, luggage, bags or the like
    • A45C7/0018—Rigid or semi-rigid luggage
    • A45C7/0022—Rigid or semi-rigid luggage comprising an integrated expansion device
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/02—Materials therefor

Definitions

  • the present invention relates to a backpack as set forth in the preamble to the appended claim 1 and to a method of producing such a backpack.
  • Conventional backpacks usually have a sack made of a flexible material and comprise a front side facing a carrier, which side is either soft or comprises a frame.
  • Such backpacks are suitable for carrying soft and durable objects, such as clothing, but they are less suitable for many other cumbersome and fragile objects, such as papers, books, binders, portable computers, and cameras.
  • backpacks which comprise a dimensionally stable container for holding various objects.
  • the backpack is formed as a dimensionally stable container, e.g. from plastic, comfort problems arise. It is uncomfortable to carry a hard container directly against one's back. There have been various attempts to solve this problem.
  • US 3,902,640 discloses a backpack which is made of a semi-rigid material throughout.
  • the front side of the backpack has been given a curved profile in order to adapt it to the back of a carrier to a certain extent.
  • this construction achieve a backpack which is particularly comfortable to carry, especially for individuals whose body shape deviates from the shape to which the backpack is adapted.
  • US 3,679,108 discloses a rigid "backbox", which has an inflatable air cushion facing the back of the carrier. A mouldable surface is formed against the carrier, but the "backbox” becomes cumbersome and is hardly comfortable to carry for a long period of time.
  • the construction shown presents a clear risk of the carrier being injured by sharp corners and edges of the "backbox", e.g. in the case of a fall.
  • SE 503,777 describes a portable storage device with a dimensionally stable container and a separate harness, which has its own dimensionally stable back piece forming a surface for the carrier in front of the container. This construction also becomes cumbersome and difficult to adapt to carriers of various body shapes and creates a risk of the carrier being injured, e.g. in the case of a fall.
  • Carrying objects on one's back is ergonomically correct, relatively comfortable, and less tiring than carrying objects in other ways. There is thus a need for an improved type of backpack which is easy to handle and which, moreover, enables the carrying of objects which in many situations are presently unsuitable for carrying in existing types of backpack.
  • the object of the present invention is to provide a backpack, which is an improvement on the known constructions described above.
  • a particular object is to provide a backpack which is suitable for carrying fragile objects and which at the same time is comfortable and easy to handle.
  • the backpack according to the invention has a casing which surrounds a space.
  • the casing has a flexible front wall, which directly adjoins the space and is intended to be facing the back of a carrier.
  • a backpack is provided which is comfortable to carry by virtue of the fact that the front wall can conform to the shape of the carrier's back and which, moreover, by virtue of the absence of dimensionally stable panels facing the back of the carrier, is lightweight and easy to handle and carry.
  • the casing has a rigid shell means extending from the front wall. In this way, a space is extended which maintains its shape and volume regardless of whether or not an object is placed in the space. In this connection, it is possible for a carrier to pack fragile objects, as well as to carry these objects in a safe and comfortable manner.
  • shell means is self-supporting and rigid.
  • the shell is formed in one single piece out of plastic.
  • a flexible wall refers to a pliable or formable wall with no substantial rigidity or ability in itself to maintain a given shape when being acted upon by an external force.
  • a dimensionally stable shell means refers to a shell means capable of maintaining its given shape despite being acted upon by a certain degree of external force.
  • the shell forms wall portions sideways, rearwards and downwards from the space, thereby the shell can be said to have a shovel-form.
  • the shell extends rearwards from the rear side of the front wall, thus presenting no part of the front of the backpack.
  • a lower portion of the front wall is connected to a lower portion of the shell means.
  • the connection between the rigid shell means and the flexible front wall is arranged along a portion, i.e. an extent with a certain area, in the lower area of the casing instead of along an edge, one avoids uncomfortable and dangerous edges cutting into the back of the carrier in the area where the horizontally acting forces between the backpack and the carrier are the greatest.
  • the lower portion of the shell means, which portion is connected to the front wall comprises a supporting surface arranged along the front wall for resting against a carrier.
  • the lower portion of the shell means which portion is connected to the front wall, has a backwardly curved portion below the supporting surface. In this way, good adaptation is achieved to the shape of the lower part of the back in different people, while the lower edge of the shell means faces away from the carrier, whereby the risk of injury in connection with blows and knocks is avoided.
  • the shell means is detachably connected to the other parts of the backpack.
  • the backpack can be divided into one rigid part and one flexible part.
  • the invention comprises a backpack with a casing which has one soft or flexible part and one rigid or hard part.
  • the rigid part comprises a shell means which in the downward, backward, and sideways directions defines a space in the backpack.
  • the soft part comprises the front wall of the space, which at the same time forms a back panel facing the back of a carrier, and carrying straps connected thereto.
  • the shell means is directly connected to the lower portion of the front wall.
  • the shell means has upper front portions which are connected to the front wall, either directly thereto or by the intermediary of wall portions associated with the soft part, which form part of the side walls of the space. It is of substantial importance to the invention that the shell means is considerably more rigid than the front wall.
  • Fig. 1 shows a backpack according to the invention in a view obliquely from behind.
  • Fig. 2 shows the backpack according to Fig. 1 in a view obliquely from the front.
  • Fig. 3 shows the backpack according to Fig. 1 in an opened position.
  • Fig. 4 shows the backpack according to Fig. 1 in an expanded position.
  • Fig. 5 shows the backpack according to Fig. 1 in an opened and expanded position.
  • Fig. 6 shows the backpack according to Fig. 1 in a disassembled state.
  • Figs 1 and 2 show a backpack 1 according to the invention in a front view and a rear view respectively.
  • different reference directions refer to the backpack as it is intended to be aligned when it is carried on the back of a carrier.
  • the backpack 1 comprises a casing 2 and carrying straps 4 connected thereto.
  • the casing 2 defines a space 26 (see Fig. 3) and comprises a front wall in the form of a flexible back panel 30 facing a carrier and a dimensionally stable, self-supporting shell means 50 connected to the back panel 30.
  • the shell means 50 is formed in one single piece out of a dimensionally stable material, e.g. metal, injection-moulded plastic or a fibre reinforced plastic material, and can be said to comprise three essential wall portions, viz. a rear wall portion 51 and two opposite side-wall portions 52.
  • the rear wall portion 51 has an S-shaped longitudinal section and in that way defines a space in the upper portion 53 of the shell means 50 and forms a gently rounded portion against the carrier in the lower portion 54 of the shell means 50.
  • the lower portion 54 of the shell means 50 comprises a supporting surface 55 for a carrier, as well as a backwardly curved portion 56 below the supporting surface 55.
  • the lower portion 54 is corrugated for achieving greater strength.
  • the rear wall portion 51 merges into the side-wall portions 52, which in turn end in a slightly concave, forward-facing edge 57 (see Fig. 6) adjacent to the upper area of the wall portion 51 and in a stiffening flange along the wall portion 51 in the lower area 54 of the same.
  • a major advantage of the open design of the shell means, shown in the embodiment, with soft edges and corners, is that the shell means can be made in a single step, e.g. by means of injection moulding.
  • the back panel 30, which is pliable but not extensible, comprises four portions, a lower lumbar portion 31, two shoulder portions 32, 33 juxtaposed thereabove, as well as an upper portion 34. These four portions comprise one padding panel each, e.g. of polyethylene with a thickness of about 15 mm.
  • the padding panels, each of which is pliable, are held in place by external and internal textile materials and seams 37 arranged between the panels.
  • the back panel 30 may also comprise a single padding panel divided into portions by the seams. By virtue of the padding of the back panel, any hard or angular objects in the space will not cause discomfort when the backpack is carried.
  • the back panel 30 exhibits greater pliability along the lines (the seams 37) where the portions 31, 32, 33 adjoin.
  • the lumbar portion 31 extends part way up between the shoulder portions 32, 33.
  • the lumbar portion 31 is connected to the lower portion 54 of the shell means 50 with the aid of screws 41 and nuts for forming a supporting surface for the carrier.
  • the screws 41 are recessed in the padding of the lumbar portion 31 and on the back (outside) of the shell means 50 extend into the respective corrugated parts in order not to be in the way on one of the sides.
  • the shoulder portions 32, 33 are connected to the shell means 50 with the aid of connection means 11, as will be described in more detail below.
  • the upper ends of the carrying straps 4 are connected to the upper area of a respective shoulder portion 32, 33 while the lower ends are connected to the outer edges of the lumbar portion 31 of the back panel 30 adjacent to the lower portion 54 of the shell means 50.
  • the lumbar portion 31 is curved outwards somewhat for forming tabs 36 adjacent to the attachment point of the carrying straps 4 in order to hold the lower ends of the carrying straps 4 out laterally, so that a comfortable fit against the carrier is achieved.
  • a carrying handle 5 is arranged between the upper attachment points of the carrying straps 4.
  • the backpack 1 has a flexible cover 16 made of fabric which along a front edge connects to the back panel 30 and which in a closed position (Figs 1 and 2) covers an upper opening between the back panel 30 and the upper edge of the shell means 50.
  • Fig. 3 shows the backpack 1 with the cover 16 open.
  • a cord 18 runs in a channel in the cover 16 and extends out from the channel in an opening in the rear portion of the cover 16.
  • the cord 18 which may be elastic, the dimension of the circumference of the cover 16 can be reduced to varying degrees by pulling the cord 18 out of the channel different distances.
  • the cord 18 does not have to extend along the entire circumference of the cover 16, but only along a portion of the same.
  • a locking means of a conventional type can be arranged around the cord outside the cover to prevent the cord, when in an extended position, from being pulled into the channel so that the circumferential dimension of the cover increases.
  • the shell means 50 In its upper area, the shell means 50 has a backwardly or outwardly curved upper portion 15, which ends in an upper edge 14.
  • the outwardly curved edge 14 serves two purposes. Firstly, the cover 16 can be closed by being pulled over the backwardly curved, upper portion 15 of the shell means 50, after which the cord 18 is tightened and fixed in the pulled-out position, either by a locking means described above or by a locking means arranged on the shell means, in this case in the form of a cleat 20.
  • the outwardly curved upper portion 15 and the backward-facing upper edge 14 prevent injuries to a carrier caused by the edge of the rigid shell means 50, e.g. in the case of a fall in connection with skiing or bicycling.
  • Figs 4 and 5 show the backpack 1 in an expanded state with a closed and an open cover 16 respectively.
  • the back panel 30 is connected to the shell means 50 by the intermediary of a common lower portion and by the intermediary of connection means 11 arranged on the sides.
  • Each of these connection means 11 comprises a strapping means 13, which is also shown in Figs 1-3 and which comprises a strap 23 and a locking means in the form of a buckle 24. With the aid of this strapping means 13 it is possible, above and at a distance from the lower portion 54 of the shell means 50, to adjust the distance between the back panel 30 and the shell means 50.
  • each connection means 11 comprises a downwardly tapering, wedge-shaped portion 12 made of fabric or some other flexible material.
  • the wedge-shaped portion 12 is fixedly connected to the back panel 30, and along its rear edge portion 12a (see Fig. 6) it is detachably connected to the shell means 50 at the front edge 57 of the same with the aid of screws 40 and nuts or other suitable means.
  • the rear edge portion 12a of the wedge-shaped portion 12 is provided with a sealing material 12b (see Fig. 6) on its side facing the shell means 50 and is provided with a rigid strip 12c on its outside. Consequently, a watertight connection is formed between the wedge portion 12 and the shell means 50.
  • the wedge-shaped portion forms front side walls of the space 26.
  • the wedge-shaped portion 12 will be expanded between the back panel 30 and the shell means 50 when the backpack is sufficiently full.
  • the backpack according to the embodiment has a bottom means (not shown) with a wedge-shaped cross-section to be placed in the bottom of the space 26 and thereby to form a flat bottom surface.
  • the bottom means is preferably made of foam plastic and is detachable to allow increased space volume if necessary.
  • the bottom means may comprise a panel which is articulated to the inside of the front wall, e.g. of 15 mm polyethylene, and which rests against a supporting edge on the inside of the shell means for forming a flat bottom surface.
  • Fig. 6 shows the backpack with the shell means 50 separated from the back panel 30 with associated parts 4, 12, 16. Accordingly, the backpack can be divided into one flexible part and one hard or rigid part. In this way, it is possible, for instance, to wash the flexible parts, which in addition to padding comprise fabric. Moreover, it is possible to replace a rigid part if it has been deformed, e.g. in an accident.
  • a backpack has been provided which has a large number of advantages and new features compared to previously known constructions. Accordingly, it is possible in a simple manner to attach various fastener means in the rigid shell means to permit various objects to be carried on the outside of the backpack.
  • the concave lower portion 54 of the back (outside) of the shell means 50 is particularly suited to hold objects, such as a sleeping bag.
  • Another major advantage of the backpack is that, by virtue of the shape of the shell means, it distributes the centre of gravity of a load in the backpack high up on and close to the carrier.

Landscapes

  • Portable Outdoor Equipment (AREA)

Claims (5)

  1. Sac à dos comprenant une paroi avant (30) destinée à être tournée vers le dos d'un porteur, et des parties de paroi s'étendant vers l'arrière depuis la paroi avant et qui, avec la paroi avant (3), forment une enveloppe (2) entourant un espace (26),
       caractérisé en ce que
       la paroi avant (30) est une paroi souple et munie d'une garniture, directement adjacente audit espace (26), et
       les parties de paroi de l'enveloppe (2) qui s'étendent depuis la paroi avant (30) comportent une coquille de matière plastique rigide cohérente (50) formée en une seule pièce et s'étendant depuis la paroi avant (30).
  2. Sac à dos selon la revendication 1, dans lequel la coquille (50) est formée par moulage par injection.
  3. Sac à dos selon la revendication 1 ou 2, dans lequel la coquille (50) a une forme de pelle formant des parties de paroi disposées latéralement, vers l'arrière et vers le bas depuis ledit espace.
  4. Sac à dos selon l'une quelconque des revendications précédentes, dans lequel la coquille (50) s'étend vers l'arrière du côté arrière de la paroi avant (30).
  5. Procédé de production d'un sac à dos comprenant les étapes suivantes :
    la mise à disposition d'une paroi avant souple et munie d'une garniture (30),
    la mise à disposition d'une coquille (50) de matière plastique rigide et cohérents formée en une seule pièce et ayant deux parties (52) de parois latérales opposées, et
    le raccordement de la paroi avant (30) et de la coquille (50) de matière plastique par l'intermédiaire d'un dispositif de raccordement (11) disposé sur les parties de parois latérales (52).
EP00202350A 1997-01-06 1997-12-05 Sac à dos Expired - Lifetime EP1051928B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US3576697P 1997-01-06 1997-01-06
US35766P 1997-01-06
EP97948082A EP0971608B1 (fr) 1997-01-06 1997-12-05 Sac a dos

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97948082A Division EP0971608B1 (fr) 1997-01-06 1997-12-05 Sac a dos

Publications (2)

Publication Number Publication Date
EP1051928A1 EP1051928A1 (fr) 2000-11-15
EP1051928B1 true EP1051928B1 (fr) 2003-04-16

Family

ID=26148893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202350A Expired - Lifetime EP1051928B1 (fr) 1997-01-06 1997-12-05 Sac à dos

Country Status (1)

Country Link
EP (1) EP1051928B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20203685U1 (de) * 2002-03-06 2003-07-17 HYVE AG, 80339 München Lawinenschaufel-Rückenschutz-Kombination
US7631792B2 (en) * 2005-04-07 2009-12-15 Philip Troy Christy Backpack
SE542052C2 (en) * 2017-05-09 2020-02-18 Schjoelin Evaggelos Bag for ping-pong balls
FR3101762B1 (fr) 2019-10-10 2021-11-05 Guery Julien Sac à dos pour motocycliste

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA961016A (en) * 1969-07-17 1975-01-14 John A. Ingram Carrier devices for shoulder-strap support on the back
US3622056A (en) * 1970-05-07 1971-11-23 John Edward Droeger Convertible satchel
US5370287A (en) * 1992-11-24 1994-12-06 Cormier Corporation Divisible backpack
GB9511925D0 (en) * 1995-06-13 1995-08-09 Tate Aarn Improvements in and relating to backpacks
US5634576A (en) * 1995-11-13 1997-06-03 Armadilo Ltd. Knapsack

Also Published As

Publication number Publication date
EP1051928A1 (fr) 2000-11-15

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