U.S. patent application number 14/840815 was filed with the patent office on 2016-03-03 for backpack with flexible frame.
The applicant listed for this patent is Bill Ridley. Invention is credited to Bill Ridley.
Application Number | 20160058160 14/840815 |
Document ID | / |
Family ID | 55401050 |
Filed Date | 2016-03-03 |
United States Patent
Application |
20160058160 |
Kind Code |
A1 |
Ridley; Bill |
March 3, 2016 |
BACKPACK WITH FLEXIBLE FRAME
Abstract
A backpack comprising a frame and a harness attached to the
frame. The frame has a loop structure defining an opening and a
torsion panel traversing the opening. The loop structure may be
formed of a coil spring covered by a sheath. The backpack may
further strapping, such as bungees, for supporting removable pack
bags.
Inventors: |
Ridley; Bill; (Norman,
OK) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Ridley; Bill |
Norman |
OK |
US |
|
|
Family ID: |
55401050 |
Appl. No.: |
14/840815 |
Filed: |
August 31, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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62043883 |
Aug 29, 2014 |
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Current U.S.
Class: |
224/261 |
Current CPC
Class: |
A45F 3/08 20130101 |
International
Class: |
A45F 3/08 20060101
A45F003/08 |
Claims
1. A backpack, comprising: a frame including a loop structure
defining an opening and a torsion panel traversing the opening, the
loop structure being formed of a coil spring covered by a sheath;
and a harness attached to the frame.
2. The backpack of claim 1, wherein the coiled spring is
continuous.
3. The backpack of claim 1, wherein the torsion panel is
corrugated.
4. The backpack of claim 1, wherein the coil spring is formed of a
length of plastic strapping material wrapped in a helical pattern.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional
Application Ser. No. 62/043,883, filed on Aug. 29, 2014, the
entirety of which being hereby expressly incorporated herein by
reference.
BACKGROUND
[0002] One of the advantages of using a conventional,
external-frame backpack is that it allows a hiker to carry heavy,
bulky loads with maximum comfort and efficiency, and with minimum
fatigue over an extended period of time. By stabilizing the full
contents of the backpack upon a lightweight rigid frame, and then
by distributing that load efficiently onto the hiker's shoulders,
torso, and hips while in a walking motion, its advantages as a
large-capacity load-carrier are obvious; however, these are all
negated by a critical design flaw.
[0003] A conventional, rigidly-braced external-frame backpack is
not capable of flexing in unison with the hiker's natural walking
motion. Furthermore, in the current configuration, rigidly-braced
side-rails suspend the full load directly off the hip belt causing
great discomfort to the backpacker, rather than on the lumbar
region where it would be most comfortable. Finally, this
arrangement causes the backpack contents to pivot with each natural
hip motion, affecting an eccentric momentum at the top of the pack
bag that causes undue fatigue to the user's neck, shoulders and
upper torso.
[0004] Therefore, a need exists for an improved backpack that is
vertically stable, and yet, still able to flex torsionally in
unison with the hiker's body while in natural walking motion.
SUMMARY OF THE INVENTIVE CONCEPTS
[0005] To resolve the abovementioned design flaw, the inventive
concepts disclosed herein are directed to a backpack with a
flexible external-frame having a vertical torsion panel allowing a
load to be distributed efficiently to the hiker's body, and to
rotate along the X-Y axis in unison with the natural walking
motion.
[0006] To provide both structural rigidity and torsional
flexibility, the frame includes a continuous coil-spring inner
frame encased in an outer sheath, which is then fastened via hub
connectors to a vertical torsion panel to create a vertically
stable, yet torsionally-flexible external frame.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The accompanying drawings, which are incorporated in and
constitute a part of this specification, illustrate one or more
implementations described herein and, together with the
description, explain these implementations. The drawings are not
intended to be drawn to scale, and certain features and certain
views of the figures may be shown exaggerated, to scale, or in
schematic in the interest of clarity and conciseness. Not every
component may be labeled in every drawing. Like reference numerals
in the figures may represent and refer to the same or similar
element or function. In the drawings:
[0008] FIG. 1 is a perspective view of a backpack constructed in
accordance with the inventive concepts disclosed herein.
[0009] FIG. 2 is an exploded, perspective view of the backpack of
FIG. 1.
[0010] FIG. 3 is a sectional view of a portion of a frame.
[0011] FIG. 4 a side elevational view of the backpack of FIG.
1.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0012] Before explaining at least one embodiment of the presently
disclosed and claimed inventive concepts in detail, it is to be
understood that the presently disclosed and claimed inventive
concepts are not limited in their application to the details of
construction, experiments, exemplary data, and/or the arrangement
of the components set forth in the following description or
illustrated in the drawings. The presently disclosed and claimed
inventive concepts are capable of other embodiments or of being
practiced or carried out in various ways. Also, it is to be
understood that the phraseology and terminology employed herein is
for purpose of description and should not be regarded as
limiting.
[0013] In the following detailed description of embodiments of the
inventive concepts, numerous specific details are set forth in
order to provide a more thorough understanding of the inventive
concepts. However, it will be apparent to one of ordinary skill in
the art that the inventive concepts disclosed and claimed herein
may be practiced without these specific details. In other
instances, well-known features have not been described in detail to
avoid unnecessarily complicating the instant disclosure.
[0014] As used herein, the terms "comprises," "comprising,"
"includes," "including," "has," "having" or any other variation
thereof, are intended to cover a non-exclusive inclusion. For
example, a process, method, article, or apparatus that comprises a
list of elements or steps is not necessarily limited to only those
elements or steps and may include other elements, steps, or
features not expressly listed or inherently present therein.
[0015] Unless expressly stated to the contrary, "or" refers to an
inclusive or and not to an exclusive or. For example, a condition A
or B is satisfied by anyone of the following: A is true (or
present) and B is false (or not present), A is false (or not
present) and B is true (or present), and both A and B are true (or
present).
[0016] In addition, use of the "a" or "an" are employed to describe
elements and components of the embodiments herein. This is done
merely for convenience and to give a general sense of the inventive
concepts. This description should be read to include one or at
least one and the singular also includes the plural unless it is
obvious that it is meant otherwise.
[0017] Throughout this disclosure and the claims, the terms
"about," "approximately," and "substantially" are intended to
signify that the item being qualified is not limited to the exact
value specified, but includes some slight variations or deviations
therefrom, caused by measuring error, manufacturing tolerances,
stress exerted on various parts, wear and tear, or combinations
thereof, for example.
[0018] The use of the term "at least one" will be understood to
include one as well as any quantity more than one, including but
not limited to each of, 2, 3, 4, 5, 10, 15, 20, 30, 40, 50, 100,
and all integers therebetween. The term "at least one" may extend
up to 100 or 1000 or more, depending on the term to which it is
attached; in addition, the quantities of 100/1000 are not to be
considered limiting, as higher limits may also produce satisfactory
results. Singular terms shall include pluralities and plural terms
shall include the singular unless indicated otherwise.
[0019] The term "or combinations thereof" as used herein refers to
all permutations and/or combinations of the listed items preceding
the term. For example, "A, B, C, or combinations thereof" is
intended to include at least one of: A, B, C, AB, AC, BC, or ABC,
and if order is important in a particular context, also BA, CA, CB,
CBA, BCA, ACB, BAC, or CAB. Continuing with this example, expressly
included are combinations that contain repeats of one or more item
or term, such as BB, AAA, AAB, BBC, AAABCCCC, CBBAAA, CABABB, and
so forth. The skilled artisan will understand that typically there
is no limit on the number of items or terms in any combination,
unless otherwise apparent from the context.
[0020] Finally, as used herein any reference to "one embodiment" or
"an embodiment" means that a particular element, feature,
structure, or characteristic described in connection with the
embodiment is included in at least one embodiment. The appearances
of the phrase "in one embodiment" in various places in the
specification are not necessarily referring to the same embodiment,
although the inventive concepts disclosed herein are intended to
encompass all combinations and permutations including one or more
of the features of the embodiments described herein.
TABLE-US-00001 DRAWING LEGEND 1. Inner Coil Spring 2. Outer Tube
Fabric Sheath 3. Coupling Tube 4. Non-Removable Fasteners 5.
Self-Adhesive Hub Connectors 6. Vertical Torsion Panel 7. Modular
Shoulder Pads 8. Modular Torso Pads 9. Modular Waist Pads 10. Hook
and Loop Fasteners 11. Vertical Downstraps 12. Upper Load Leveling
Straps 13. Belt Halves 14. Side Adjustment Straps 15. Side
Fastening Straps 16. Sternum Straps 17. Bungee Restraint Cords 18.
Bungee Adjustment Straps 19. Vertical Webbing Restraint 20.
Removable Pack Bags
[0021] Referring now to the drawings, an exemplary embodiment of a
backpack constructed in accordance with the inventive concepts
disclosed herein will now be described.
[0022] The Backpack includes a (1) Coil Spring Inner Frame made of
a lightweight, durable, plastic spring fully encased in a (2)
Fabric-Tube Outer Sheath made of sewn (or braided, or woven)
canvas-like material. These two components are then mated using an
inner (3) Coupling Tube and (4) Fasteners, forming a continuous and
flexible outer frame connected via (5) Self-Adhesive Hub Connectors
to a (6) Vertical Torsion Panel made from a vertically-oriented
panel, allowing the frame to be flexible only along the (X-Y)
torsional plane. This panel may be shaped to approximate the
general curvature of the hiker's shoulders, torso, lower back and
buttocks.
[0023] The coil spring may be made of a length of plastic strapping
material, such as that used to tie lumber pallets. This material
may then be turned into a continuous closed coil using standard
spring-manufacturing equipment and procedures similar to making a
metal spring from flat wire. The coil spring may then be placed on
a turning mandrel, where the loose coils are closed and sealed into
a continuous, closed tube-spring. This closed tube-spring may then
be encased in a continuous outer sheath made of a suitable
material, such as a canvas-like fabric, which can either be sewn
into a tube using flat strips of fabric, or it can be woven or
braided as a continuous tube.
[0024] The coil spring and sheath may be attached to one another
using a plastic coupling tube and non-removable fasteners. To
perform this mating, the sheath fabric may be tucked into both open
ends of the coil spring with sufficient insertion length to be
locked into position with the coupling tube. Because all these
materials melt, a heated probe can penetrate the walls of the
spring, sheath and coupler, and permanently held in place with
non-removable fasteners such as "pine tree clips."
[0025] One of the advantages inventive concepts disclosed herein is
the "synergy" created by the discontinuous compressive force
created by the coil spring against the continuous tensile force
created by the sheath tube. By containing the mechanical energy of
the spring inside a tensile tube, this produced a flexible, yet
stable outer brace.
[0026] The coils spring/sheath outer brace is shaped into a
continuous outer ring, which is then fastened to an interior
torsion panel composed of a vertically stable, yet torsionally
flexible material. In one embodiment, the material is a twinwall
corrugated plastic panel, which is structurally rigid along its
Z-axis, and yet, is torsionally flexible along its X-Y axis.
Furthermore, plastic twinwall can be shaped to approximate the
basic profile of a hiker's torso. Finally, twinwall panel also
provides a surface for attaching it to the outer brace via hub
connectors.
[0027] In one embodiment, the hub connectors must be spaced at
regular intervals along the outer brace. To achieve the desired
stability and flexibility, the hubs connectors may be permanently
fastened to the vertical torsion panel. To this end, the hub
connectors may be made of a suitable material that allows it to be
shaped to wrap around the outer brace and also have a flat
attachment area parallel to the twinwall. In one embodiment, the
hub connectors may be "VHB-type" structural adhesive tape
fasteners, making the hub connectors self-adhesive. The hub
connectors can be made from a variety of materials, ranging from
metal, carbon fiber, or plastic with sufficient bonding coefficient
to hold the connector to the twinwall panel, while allowing the
outer brace to shift through the connection while the hiker is in a
natural walking motion.
[0028] The backpack may further (a) an adjustable harness and (b)
rearward bungee restraints for securing removable pack bags. In one
embodiment, the Harness may include (7) Modular Shoulder, (8)
Torso, and (9) Waist Padding shaped to fit the user's individual
anatomy using a corresponding system of (10) Hook and Loop
Fasteners, which also allows the harness to be positioned optimally
on the frame.
[0029] In complement with the modular padding, a system of webbing
straps with hardware may include (11) Vertical Downstraps to attach
the lower ends of the shoulder pads to the frame; (12) Upper Load
Leveling Straps to pull the load closer or further away from the
shoulders as needed; (13) Adjustable Belt Halves to properly fit
the waist; (14) Side Adjustment Straps to adjust the position the
waist pads; (15) Side Fastening Straps to fasten the waist pads
securely to the sides of the frame; and (16) A Sternum Strap to
adjust the position of the shoulder pads across the chest.
[0030] In one embodiment, the backpack may include a course of (17)
Bungee Restraint Cords that pass between the hub connectors and the
vertical torsion panel to provide secure anchoring points for
restraining multiple removable pack bags on a rearward open
platform. These bungee cords also receive (18) Bungee Webbing
Straps which, in concert with the (19) Vertical Webbing Restraint,
to completely stabilize multiple (20) Removable Pack Bags.
[0031] From the above description, it is clear that the inventive
concepts disclosed herein are well adapted to carry out the objects
and to attain the advantages mentioned herein as well as those
inherent in the invention. While exemplary embodiments of the
inventive concepts have been described for purposes of this
disclosure, it will be understood that numerous changes may be made
which will readily suggest themselves to those skilled in the art
and which are accomplished within the spirit of the inventive
concept disclosed and claimed herein.
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