U.S. patent application number 16/936649 was filed with the patent office on 2020-11-12 for hammock.
This patent application is currently assigned to AMOK EQUIPMENT AS. The applicant listed for this patent is AMOK EQUIPMENT AS. Invention is credited to Jonas HAUG.
Application Number | 20200352312 16/936649 |
Document ID | / |
Family ID | 1000004975119 |
Filed Date | 2020-11-12 |
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United States Patent
Application |
20200352312 |
Kind Code |
A1 |
HAUG; Jonas |
November 12, 2020 |
HAMMOCK
Abstract
A hammock which includes a pair of suspension points provided on
opposed sides that the hammock is arranged to suspend from in use.
The hammock has a mid-section for supporting a user's body in a
direction perpendicular to a line between the suspension points.
The mid-section suspends from a pair of wings extending outwardly
from opposing lateral edges of the mid-section to the suspension
points. On each side of the hammock there may be provided a line of
adjustable length for raising a first portion of the mid-section,
for example, for inclining the back of the hammock. Second lines of
adjustable length may be provided for raising a second portion of
the mid-section to change the shape of the hammock further, for
example raising the knees of the user to bring him or her into a
fully-seated position.
Inventors: |
HAUG; Jonas; (Fredrikstad,
NO) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
AMOK EQUIPMENT AS |
Trondheim |
|
NO |
|
|
Assignee: |
AMOK EQUIPMENT AS
Trondheim
NO
|
Family ID: |
1000004975119 |
Appl. No.: |
16/936649 |
Filed: |
July 23, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15114541 |
Jul 27, 2016 |
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PCT/EP2014/071925 |
Oct 13, 2014 |
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16936649 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A45F 3/22 20130101 |
International
Class: |
A45F 3/22 20060101
A45F003/22 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 5, 2014 |
GB |
1401978.0 |
Claims
1-20. (canceled)
21. A hammock comprising: a pair of suspension points provided on
opposed sides of the hammock that the hammock is arranged to
suspend from in use; an approximately rectangular mid-section for
supporting a user's body from head to foot when lying in a sleeping
position in a direction substantially transverse to a line between
the suspension points, the mid-section including a pocket for
receiving a sleeping pad to stiffen the mid-section, wherein the
longer edges of the pocket provide a pair of opposing lateral edges
of the mid-section; a pair of wings, each extending outwardly from
one of the opposing lateral edges of the mid-section substantially
to a respective suspension point, wherein the wings are cut with a
profile that is configured to provide a substantially flat
mid-section for the user when the hammock is under load from the
user resting on the mid-section in the sleeping position; a pair of
first lines of adjustable length, each first line descending from a
respective suspension point and being connected to a first location
along a respective lateral edge of the mid-section by a web of
fabric, the first lines being for reducing, whilst in use, a
distance between the respective first location and the respective
suspension point, so as to raise a first portion of the mid-section
corresponding to the first locations and thereby change the shape
of the mid-section from a first, reclined configuration to a
second, raised or seated configuration, a pair of second lines of
adjustable length on each opposed side of the hammock, each second
line descending from a respective suspension point and being
connected to a second location along a respective lateral edge of
the mid-section by the web or a further web of fabric on that side,
the second lines being for reducing, whilst in use, a distance
between the respective second location and the respective
suspension point, so as to raise a second portion of the
mid-section corresponding to the second locations and thereby
change the shape of the mid-section to a third, fully-seated
configuration, wherein the web of fabric connected to each first
line or second line is arranged to distribute tension from the
respective first line or second across a length of the respective
lateral edge of the midsection when the first lines and second
lines are under load.
22. The hammock as claimed in claim 21, wherein the wings each
comprise woven fabric panels.
23. The hammock as claimed in claim 22, wherein the wings each
extend from a suspension point to a head end of the mid-section and
to a foot end of the mid-section.
24. The hammock as claimed in claim 22, wherein the wings are each
substantially bell-shaped.
25. The hammock as claimed in claim 21, wherein a base edge of each
of the wings comprises a convex section.
26. The hammock as claimed in claim 21, wherein a base edge of each
of the wings comprises a pair of spaced convex sections and a
centrally positioned concave section between.
27. The hammock as claimed in claim 22, wherein the fabric
comprises a warp and a weft which are orientated at about 45
degrees to a principal direction of tension in each of the wings
when under load.
28. The hammock as claimed in claim 21, wherein the first location
on each of the opposing lateral edges is arranged so that, when in
use, reducing the distance between the first location and the
respective suspension point elevates a shoulder region of the user
when lying along the mid-section.
29. The hammock as claimed in claim 21, wherein the second location
on each of the opposing lateral edges is arranged so that, when in
use, reducing the distance between the second location and the
respective suspension point elevates a knee region of a user
supported by the mid-section.
30. The hammock as claimed in claim 21, wherein each line of
adjustable length is looped through a return device.
31. The hammock as claimed in claim 21, wherein the lines of
adjustable length are straps.
32. The hammock as claimed in claim 21, further comprising a foot
pocket formed at a foot end of the mid-section to receive the feet
of a user resting on the mid-section.
33. The hammock as claimed in claim 21, wherein a ridgeline is
provided between the suspension points and is adapted to be under
tension when the hammock is under load.
34. The hammock as claimed in claim 21, wherein the hammock further
comprises one or more inflatable members.
35. The hammock as claimed in claim 34, wherein the one or more
inflatable members are each in the form of inflatable tubes
extending either side of the mid-section.
36. The hammock as claimed in claim 21, wherein the mid-section is
configured to accommodate two users in a side by side arrangement.
Description
TECHNICAL FIELD
[0001] The present invention relates to a hammock, and more
particularly to a transverse hammock. Thus the hammock is of the
type having two suspension points where a user of the hammock is
supported on a mid-section that extends transversely to a line
between the suspension points.
INTRODUCTION
[0002] In a traditional hammock, the body of the hammock extends
longitudinally between two suspension points, with the user lying
generally in-line with the suspension points (referred to below as
a longitudinal hammock).
[0003] One of the problems with a longitudinal hammock is that the
hammock will sag between the suspension points, especially when
under load, creating a curved bed that the user has to sleep in.
This can result in a sleeping position that some will find
uncomfortable.
[0004] With the recent popularity in hammocks for recreational use
and in particular for camping, there have been a number of
developments in an alternative type of hammock design where the
user lies in a transverse direction (a transverse hammock). Such
transverse hammocks can achieve a flatter, more comfortable,
sleeping position for the user.
[0005] An example of such a hammock is the Ergo Hammock
manufactured by Exped AG., a company based in Switzerland, and an
illustration of the hammock can be seen in FIG. 1A.
DE-U-202011103350 of Exped AG also describes aspects of their
hammock. FIG. 1B shows a plan view of the hammock as illustrated in
DE-U-202011103350. The user is supported on a rectangular
mid-section of the hammock that extends in a direction which is
transverse to an imaginary line between the suspension points. The
mid-section is angled at around 75 degrees to the imaginary line
between the suspension points.
[0006] In these known examples, an array of ropes is provided on
both sides of the hammock to support the mid-section suspended
between. The ropes radiate out from a suspension point to a
respective lateral edge of the mid-section, with the ropes attached
to the edge at reinforced points spaced out along the length of the
hammock. One criticism of the ropes is that, particularly in a
camping hammock where the ropes are of a thin gauge to be as
lightweight as possible, they can be prone to becoming tangled with
each other as well as with any anchoring straps when the hammock is
packed away in a sack. This can be frustrating for the user when
he/she comes to erect their hammock at a new site.
[0007] In use, despite offering a flatter profile for the user than
a longitudinal hammock, the weight of the person still tends to
develop a curved profile in the mid-section due to the way the load
is transferred to each of the ropes that radiate out from the
suspension points. The points where the ropes connect to the
lateral edges also represent points of high stress concentration
and this can result in discomfort from the feeling of bands of
tension under the user's body.
[0008] Another concern with hammocks is how to keep the user
insulated from the cold when they are being used for camping. Where
a side of the hammock is drawn up against the user, this tends to
compress the material of the user's sleeping bag and this can
significantly reduce the effectiveness of the sleeping bag's
insulation to keep the user warm. Camping pads and other
lightweight mattresses are often used to provide a layer of thermal
insulation between the user and the external environment, but these
are often unrestrained within a hammock and can move around during
use. Where they are retained in pockets, care has to be taken,
because the pad can then transfer loads in a way that creates
points of high seam tension and possibly result in the hammock
ripping.
[0009] In the transverse hammock manufactured by Exped AG, the
mid-section is provided as a wide continuous sheet of fabric which
extends a distance up on either side beyond the normal footprint of
the sleeping area to the lateral edges of the mid-section where the
ropes are then attached. A pocket is provided in the underside of
the mid-section to accommodate a sleeping pad. As the pocket needs
to be sufficiently large to be able to accept a range of
commercially available sizes of sleeping pad, one which is thinner
than the pocket will tend to rest on the lower surface of the
pocket, hanging away from the under-surface of the mid-section that
the user sleeps on. This can result in less warmth being retained
by the user.
[0010] It would be desirable to improve on these arrangements and
provide a hammock that can achieve a flatter position for the user
to lie in.
[0011] It would also be desirable to provide a hammock that can
offer more functionality for the user.
SUMMARY OF THE INVENTION
[0012] Viewed from a first aspect there is provided a transverse
hammock comprising: a pair of suspension points provided on opposed
sides of the hammock that the hammock is arranged to suspend from
in use; a mid-section for supporting a user's body in a direction
which is transverse to a line between the suspension points; and a
pair of wings extending outwardly from opposing lateral edges of
the mid-section to the suspension points.
[0013] The wings offer many advantages over the known hammock
arrangements. The most noticeable for the user is the simplicity of
the structure and the ease of erection and use. The wings also
allow a more even distribution of the tension that is experienced
in the mid-section during use and the ability to provide a flatter
sleeping position. They also offer a greater degree of protection
from cold breezes. These will de described in more detail
below.
[0014] The "line" between the suspension points may be an imaginary
straight line or more preferably it is represented by a real line
provided by a strap or rope which forms a ridge line extending
between the suspension points. A ridge line provides the benefit
that the cut of the hammock can be based on a known separation
distance of the suspension points and so the hammock's properties
can be more carefully preset. Additional anchoring lines (e.g.,
straps or ropes) can then extend out from each suspension point to
an anchoring part. These might be an adjustable strap for looping
around a tree or some other immovable object, that the hammock can
then be suspended from.
[0015] The term "transverse" used herein to describe the
orientation of the mid-section to the line between the suspension
points also includes "substantially transverse", i.e., it includes
arrangements where the mid-section is within .+-.30 degrees of
perpendicular, more preferably within .+-.20 degrees of
perpendicular and most preferably within .+-.15 degrees of
perpendicular. In one preferred example the mid-section is
orientated at right angles to the line between the suspension
points; namely the mid-section may be orientated to support the
user's body perpendicularly to the line between the suspension
points.
[0016] The wings may comprise fabric material, for example, a panel
made from one or more pieces of woven fabric. These fabric wings
are in place of the ropes radiating from the suspension points as
used in the prior art of FIGS. 1A and 1B. The wings avoid the
tangling problems experienced with the rope arrangements.
[0017] It has also been found that by using a fabric, with its
pattern of threads (the warp and the weft), the distribution of the
user's weight can be taken account of more precisely in the
construction of the hammock, for example, in order to achieve a
flatter, more comfortable sleeping position. The nature of the
fibres within the fabric also tends to distribute the forces within
the wings, resulting in a more even distribution of stresses at the
seams/joins and a more comfortable sleeping experience for the
user.
[0018] The fabric material may extend to the suspension point or
may finish short thereof, for example, to leave a small gap or
provide room for netting or other material at the top of each wing.
Preferably the fabric extends at least 80% of the way up each wing,
more preferably at least 90%, i.e., that woven fabric is at least
present in the region between one third and two thirds up each
wing, preferably the full height of the wing, in order to help
distribute loads within a central region of the wing (e.g., in the
x and y directions of the warp and weft), in contrast to the ropes
of the prior art hammocks (which carry the loads solely in radial
directions).
[0019] The fabric may be orientated so that the warp/weft are
substantially aligned, i.e., parallel or perpendicular, with the
line extending between the suspension points when viewed from above
(unless stated otherwise, all references herein to this line
between the suspension points are intended to be when the hammock
is viewed from above, e.g., when laid out flat on a floor). With
this alignment of the warp/weft, the weight is generally carried
along the length of the fibres which extend down through the
central portions of the wings, with load also being transmitted
along the bias of the fabric, i.e., diagonally across the fabric,
to the side edges of the fabric.
[0020] The fabric of the wings could also be cut on the bias, such
that the warp and weft are inclined to this line extending between
the suspension points, for example, the threads may extend in a
direction that is inclined at between about 30 to 60 degrees to the
line extending between the suspension points, and more preferably
at about 45 degrees to this line ("about" implying, for example,
.+-.10.degree., more preferably .+-.5.degree., when the hammock is
viewed from above and laid out flat). In this way, as the fabric is
caused to stretch under the load of the user, tension is
transmitted out to the side edges of the wings via the fibres, and
in this way it distributes the tension more evenly within the
fabric of wings.
[0021] The use of a fabric for the wings helps to spread the
tension, reducing the tendency for the hammock to tear, e.g., at
the seams, and improving the comfort for the user (the hammock
feels more supple and the tension feels less localised as a band
passing under the user). By appropriate cutting of the base edge of
the wing, and in some embodiments orientating the fabric on the
bias, it also helps to keep the wings looking taut regardless of
the resting position of the user.
[0022] The wings are preferably cut with a curved base edge which
has a profile configured (having taken account of the orientation
of the fabric) to provide a substantially flat mid-section for the
user when the hammock is under load from a user resting in it.
[0023] Preferably the profile of the base edge of each wing
includes at least one convex section. Thus in arrangements where
the mid-section has been cut with a rectangular or approximately
rectangular outline shape each wing may be roughly triangular in
shape with a generally convex base edge (as opposed to a strictly
triangular profile with straight edges) arranged to produce a
substantially flat mid-section for the user to lie on when the
fabric is under load.
[0024] More preferably, where the fabric is orientated on the bias,
i.e, the fibres will be at roughly 45.degree. to the line between
the two suspension points when viewed from above, the profile of
the base edge may include two, spaced, convex sections and a
centrally positioned concave section between. Thus the base edge
will have an undulating profile.
[0025] The wings are configured so that the weight of the user,
which will be distributed all along the mid-section of the hammock
between the head and foot ends (often not in a particularly even
manner), is balanced with the centre of mass located below the line
between the suspension points. As a person's mass tends to be
located more in their shoulders and upper sections of their body
than their legs, preferably this centre of mass position or
`mid-point` of the hammock (i.e., the region directly beneath the
line between the suspension points) is not a true halfway point of
the mid-section, but instead a point positioned further up the
mid-section towards the head end. In other words, the suspension
points are positioned slightly closer to the head end than the foot
end, and the hammock is asymmetric about this `mid-point` where the
centre of the user's mass is intended to be carried.
[0026] The wings are preferably configured so that the side edges
of the wings converge towards a given suspension point at an angle
.alpha. that is less than an angle .beta. subtended by two
imaginary lines radiating from the suspension point to the head end
and to the foot end of the mid-section respectively. Described in
another way, the wings are narrower at the suspension points than
they would be if the wings had been cut from a triangular piece of
fabric that extends to the head and foot ends of the mid-section.
This is preferably through providing wings that are substantially
bell-shaped in profile, with side edges that curve inwardly.
[0027] Bell-shaped wings have scooped side edges and this
arrangement has been found to carry the forces better within the
wings. For example, a main force component may extend diagonally up
the fabric of the wing from the `mid-point` of the mid-section, and
this together with force components from other loaded regions of
the mid-section may blend with one another roughly around the
middle of the scooped side edge to then be directed up to the
suspension point in a balanced manner along a reinforced seam that
runs up the side edge.
[0028] The angle .alpha. may be centred about a principal line of
tension extending between a suspension point and a centre of mass
position, i.e., .alpha./2 corresponds essentially with the
`mid-point` of the hammock where the centre of mass is carried. In
this way, the majority of the weight on the hammock is transmitted
centrally up the wings from the centre of mass point, within a
central portion of the fabric lying generally along the .alpha./2
line and within the angle .alpha. defined by the side edges of the
wing.
[0029] Thus the angle .beta. may correspond to around 90.degree. as
the angle subtended by the imaginary lines extending from the foot
and head ends to the suspension point, and by contrast the angle
.alpha. may be less than 60.degree., for example less than
45.degree. and more preferably around 30.degree. or less. The angle
.alpha. may satisfy the condition
.beta./4.ltoreq..alpha..ltoreq..beta./2, and preferably is a value
corresponding to about .beta./3.
[0030] The side edges of the wings may have a concave or cut-away
profile, so that in the lower regions of the wings and in
particular along the base edge of the wings, the wings are
configured to reach out towards the head and foot ends of the
hammock. For example, at the base edge the wings may reach out to
points that subtend the suspension points with imaginary lines at
an angle .beta. or close thereto.
[0031] Thus viewed from another aspect, there can be seen to be
provided a transverse hammock, the hammock comprising a pair of
suspension points provided on opposed sides of a transversely
orientated mid-section, the mid-section providing a surface with a
head end and a foot end for a user to lie on, wherein the hammock
comprises a pair of wings that support the mid-section, each wing
being defined by a base edge attached to the mid-section and by a
pair of side edges that converge towards a given suspension point
at an angle .alpha., wherein the angle .alpha. is less than an
angle .beta. subtended by two imaginary lines radiating from the
given suspension point to the head end and to the foot end of the
mid-section respectively.
[0032] The mid-section may be approximately rectangular in profile,
having straight or generally straight lateral edges extending from
the head end to the foot end. The mid-section could also comprise
other profiles such as a truncated wedge shape with a wider head
end than the foot end, and/or have curved lateral edges to create
an elliptical or egg-shaped profile.
[0033] The mid-section may include a pocket for a sleeping pad.
Preferably the mid-section is formed as a sleeve to house the
sleeping pad, most preferably as a rectangular pocket, the long
edges of the pocket providing the lateral edges that the wings
extend from.
[0034] The pocket may be of a size to accommodate a range of
commercial sleeping pads. The pocket may incorporate an internal
pouch at the head end and/or foot end(s) in order to be able to
hold a range of different lengths of mat more tightly. The sleeping
pad may be a foam pad, an air mattress, a down or fibre-filled air
mattress or any other form of mattress that might be suitable. The
hammock may be supplied with a removable sleeping pad, or it could
be integrally formed with the hammock, for example as an integral
inflatable mattress portion.
[0035] The hammock may also include inflatable elements, for
example, tubes extending along each of the lateral edges, as well
as possibly across the head or foot ends, to provide beams that
impart rigidity to the mid-section and further help to distribute
the forces in the wings of the hammock.
[0036] Preferably the hammock is configured so that a significant
portion of the load from the user, i.e., more than 50% of the load,
is carried by a central portion of the wings (i.e., the portion
within the angle .alpha. described above), the tension from the
load extending down to the `mid-point` or centre of mass positioned
directly below the line between the suspension points when the
hammock is in use.
[0037] This has been found to assist other functionality. Thus
viewed from a further aspect, there can be seen to be provided a
hammock comprising: a pair of suspension points provided on opposed
sides of the hammock that the hammock is arranged to suspend from
in use; a mid-section for supporting a user's body in a direction
transverse to a line between the suspension points; and on each
side, a line of adjustable length for reducing, whilst in use, at a
first location along each opposing lateral edge of the mid-section,
a distance between that location and the respective suspension
point, so as to raise a first portion of the mid-section
corresponding to the first location and thereby change the shape of
the mid-section from a first configuration to a second
configuration.
[0038] In this way, the hammock can be made adjustable. The first
configuration may be a reclined configuration, for example, where
the user is lying substantially flat. The second configuration may
be a raised configuration, for example, where a shoulder region of
the user is raised with respect to the legs.
[0039] Where a significant portion of the load from the user is
being carried by the central portion of the wings as described
above, this allows the line of adjustable length, which might be a
strap or a cord passing through an adjustment device, to be
shortened easily by the user while they are still in place, resting
in the hammock. This line of adjustable length may pull up a
portion of the mid-section that supports an upper region of the
user's back, in order to raise the user's shoulders from a reclined
position to a seated position. The line of adjustable length may
comprise a handle for the user to pull on.
[0040] The hammock may further comprise, on each side, a line of
adjustable length for reducing, whilst in use, at a second location
along each of the opposing lateral edges of the mid-section, a
distance between that location and the respective suspension point,
so as to raise a second portion of the mid-section corresponding to
the second location and thereby change the shape of the mid-section
to a third configuration. Preferably the second location on each of
the opposing lateral edges is arranged so that, when in use,
reducing the distance between the second location and the
respective suspension point elevates a knee region of a user
supported by the mid-section. Thus, when the shoulders of the user
have been raised, the user may shorten the second set of lines of
adjustable length in order to raise his/her knees into a
full-seated position. Pulling the knees of the user up also helps
to compensate for the slight shift in movement of the centre of
gravity associated with raising the shoulders.
[0041] By raising a location corresponding to the knees of the
user, the hammock can be made to `buckle` at this position to allow
the user's knees to bend.
[0042] Preferably the lines of adjustable length are connected to
the mid-section by hoisting webs. These may comprise roughly
triangular pieces of fabric that help to distribute the forces
along the region of lateral edge (and helps to accommodate
different heights of user too). The hoisting webs may be cut with
the same orientation as the wings, and in one example are cut on
the bias. In a similar way to the wings, the one or more hoisting
webs may be substantially bell-shaped with scooped side edges. They
may also include rounded bottom edges (either of a generally convex
or an undulated profile according to the orientation of the
fabric). In a further arrangement, two or more lines of adjustable
length may be attached to a common hoisting web that is arranged to
raise more than one location along the mid-section, each
independently of the next.
[0043] The line(s) of adjustable length may comprise an arrangement
which provides at least a two to one purchase on the load. In an
example, the line of adjustable length descends from a suspension
point through a buckle to a ring provided on a hoisting web, which
preferably comprises a substantially triangular panel that is
joined to a lateral edge of the mid-section, and back from the ring
to the buckle, to allow it to be tightened or released by the
user.
[0044] The hammock may be provided at the foot end with a footbox.
This is a pocket arrangement that provides room for the feet of the
user without the fabric being under tension where it surrounds the
feet. In this way the insulating material of the sleeping bag can
remain in a reasonably uncompressed form and thereby maintain its
insulating properties. The footbox may be cut with extra fabric
provided in a roof portion of the footbox to allow room for the
user's toes to extend up into during use.
[0045] The hammock may be made of any suitable material. Preferably
it is made of a lightweight fabric such as nylon or polyester, more
preferably a ripstop nylon material. However, it could equally be
made from other fabrics such as cotton or any mixture of fibres as
desired.
[0046] The hammock may be provided with a bug net, which attaches
to the hammock, for example, by using a long zip or hook and eye
fabric connection (e.g., Velcro.RTM.) provided around an upper part
of the hammock. If a footbox is present then running the zip (or
other connector) along an upper edge of the footbox facilitates an
easier opening and closing of the zip while the user is seated in
the hammock. The fabric of the wings also helps to avoid points
where the stresses are concentrated such that it can make it
difficult to connect and disconnect the bug net. A carabiner may be
provided to hook the top of the bug net to a ridge line.
BRIEF DESCRIPTION OF THE DRAWINGS
[0047] Certain preferred embodiments of the hammock will now be
described in greater detail, by way of example only, and with
reference to the accompanying drawings, in which:
[0048] FIG. 1A shows an illustration of a known transverse
hammock;
[0049] FIG. 1B shows a further illustration of the known transverse
hammock;
[0050] FIGS. 2A and 2B are plan and perspective views of a first
preferred hammock with bell-shaped wings;
[0051] FIG. 3 is a plan view of a preferred hammock having
triangular wings;
[0052] FIGS. 4A, 4B and 4C illustrate examples of different wing
shapes;
[0053] FIG. 5 is a view showing panels of fabric for use in a
preferred hammock;
[0054] FIG. 6 is a perspective view of a hammock showing
considerations for the wings;
[0055] FIG. 7 shows a plan view of another preferred hammock where
the user is in a sleeping position, the hammock comprising controls
in the form of lines of adjustable length for adjusting the profile
of the hammock;
[0056] FIG. 8 shows a perspective view of the hammock of FIG. 7
with the controls adjusted to provide a reclining position for the
user;
[0057] FIG. 9 shows a perspective view of a preferred hammock with
the controls adjusted to provide a fully-seated configuration for
the user;
[0058] FIG. 10 shows a perspective view of the hammock of FIG. 9
being used for camping;
[0059] FIG. 11A shows a perspective view of a preferred hammock
with a bug net and FIG. 11B shows it with an additional
flysheet;
[0060] FIG. 12 shows an example of a line of adjustable length and
a portion of a hoisting web;
[0061] FIG. 13 is a perspective view of a further preferred hammock
with an alternative arrangement for the controls;
[0062] FIG. 14A shows a cross-sectional view through a preferred
hammock including a sleeping pad and FIG. 14B shows a similar view
where an additional pouch has been incorporated to accommodate a
smaller sleeping pad;
[0063] FIG. 15A is a representation of how the sleeping pad may be
inserted and extracted and FIG. 15B shows a similar view where an
additional pouch has been incorporated in the hammock like in FIG.
14B;
[0064] FIG. 16A is a perspective view of a preferred hammock which
has been provided with inflatable tubes and FIG. 16B shows an
enlargement of this detail. Figure, FIGS. 16C and 16D shows similar
views for an embodiment where an inflatable ring replaces the
inflatable tubes, and FIGS. 16E and 16F show partial perspective
views of a further embodiment having a different arrangement of an
inflatable tube;
[0065] FIG. 17 is a perspective view of a preferred hammock for two
users;
[0066] FIG. 18 is a perspective view of a preferred hammock similar
to the one shown in FIG. 17 which is additionally provided with
controls in the form of lines of adjustable length for adjusting
the profile of the hammock, the hammock being shown in a sleeping
configuration;
[0067] FIG. 19 shows a perspective view of the hammock of FIG. 18
with the controls setting the hammock into a reclining
configuration;
[0068] FIG. 20 shows a perspective view of the hammock of FIG. 18
with the controls putting the hammock into a fully-sitting
configuration; and
[0069] FIG. 21 is a perspective view of another preferred hammock
with narrower wings.
DETAILED DESCRIPTION
[0070] FIG. 1A illustrates a front perspective view of a known
transverse hammock 1 that is available from Exped AG. The hammock 1
has a pair of suspension points 2, which are in turn suspended from
lines 3 that are anchored to immovable objects, such as two
adjacent trees (not shown). The separation of the suspension points
2 is controlled by a ridge line 4 that extends between the two
suspension points 2.
[0071] The hammock is a transverse hammock, i.e., the user is
intended to lie on a mid-section 5 that is orientated substantially
at right angles to the ridge line 4. Thus the head end 6 and the
foot end 7 of the mid-section 5 are positioned either side of the
ridge line 4 when viewed from above rather than in line with
it.
[0072] The opposed lateral edges 8 of the mid-section 5 are
suspended from an array of ropes 9 that extend from each suspension
point 2, the ropes 9 being spread out along the lateral edge 8 at
intervals. The length of the ropes 9 is fixed to provide a suitable
sleeping position for the user. In order to make the hammock 1 as
lightweight as possible, these ropes 9 can be of a narrow gauge
which makes them prone to tangling.
[0073] As can be seen in the figure, a pocket 10 is provided on the
under-surface of the hammock 1 to accommodate a sleeping pad (not
shown) for the user. A seam where the pocket 10 is sewn to the
mid-section 5 marks out a `base` of the hammock 1 corresponding to
the sleeping area for the user. The width of the mid-section 5,
however, is much wider than this base, such that the fabric
continues up to a lateral edge 8 to provide a shallow `side` for
the user. Where the ropes 9 attach to the mid-section 5,
significant stress concentrations can develop when the hammock 1 is
under load from a user. Over the top of the user, a bug net 11 may
be provided, suspended from the ridge line 4 and connected to upper
parts of the hammock 1 by a zip.
[0074] FIG. 1B shows the transverse hammock 1 as depicted in
DE-U-202011103350 (similar features in FIG. 1A are indicated by the
same reference number in FIG. 1B). When viewed from above, as
shown, the mid-section 5 of this hammock 1 is angled so that it is
around 15.degree. off being at right angles to the line between the
pair of suspension points 2. An array of ropes 9 is provided on
each side of the hammock to suspend the mid-section 5, the ropes 9
extending between a suspension point 2 and a respective lateral
edge 8 of the mid-section 5.
[0075] FIG. 2A shows a preferred hammock 20 viewed from above. It
comprises a pair of spaced suspension points 22 from which the
hammock 20 is suspended. Lines 23 (see FIG. 2B) for anchoring the
hammock 20 to a pair of trees or other immovable objects, extend
from the other side of the suspension points 22. The hammock 20
comprises a mid-section 25 having a head end 26 and a foot end 27
arranged on opposite sides of a line 24 extending between the two
suspension points 22. Thus the hammock 20 is a transverse hammock
with a mid-section 25, which provides a surface that a user can lie
on as shown, arranged substantially at right angles to a ridge line
24a.
[0076] The mid-section 25 may be substantially rectangular in
outline as shown, defined by opposed (left and right) lateral edges
28 extending between edges at the head end 26 and foot end 27. A
rectangular outline is useful because it corresponds to that of
most commercially available sleeping mats. The mid-section could,
of course, be a different shape, for example, a tapered or wedge
shape, or provided with curved lateral edges to give a
substantially oval or egg-shaped outline. The mid-section 25 may
also include rounded corners to impart some tension into the wings
29 at that point.
[0077] The mid-section 25 of the hammock 20 is preferably arranged
to provide an essentially flat surface for the user to lie on. The
flatness can be assisted through the incorporation of a sleeping
pad within a pocket of the mid-section 25. The pocket may include
one or more internal pouch(es) for the head end and/or foot end of
the sleeping pad to be tucked into (these will be discussed in more
detail later with respect to FIG. 14). The sleeping pad helps to
tension the mid-section 25 in the length direction, and through the
provision of one or more pouches can be arranged to accommodate
different lengths of sleeping pad. Additional tensioning elements,
such as inflatable tubes or rods etc., could be used to help
stiffen the mid-section 25. For example, an inflatable tube could
be incorporated either side of a sleeping pad in the mid-section 25
extending along the lateral edges 28.
[0078] The hammock 20 is shown in perspective in FIG. 2B. As can be
seen in the figure, the mid-section 25 is suspended from a pair of
wings 29, each of which is connected to a lateral edge 28 of the
mid-section 25. In use, the wings 29 comprise flat, roughly
triangular panels that extend from the lateral edges 28 up to the
suspension points 22, the wings 29 being inclined at an angle of
between 20 to 70.degree. to the line 24 between the suspension
points 22, more preferably between 30 and 60.degree. to the line
24, and most preferably at around 45.degree..+-.15.degree. to this
line 24. The wings 29 may comprise single, generally triangular
pieces of fabric, or could be made from several pieces of fabric
that are sewn together. More preferably the wings 29 are
bell-shaped as shown, having pronounced curved side edges 32 that
extend from the ends of a bottom edge 33 (that is joined to the
mid-section 25) up to suspension points 22 along a concave path.
The wings 29 may reach out to the head end 26 and the foot end 27
of the mid-section 25 to span the length of the lateral edges
28.
[0079] FIG. 3 shows a top view of an alternative transverse hammock
20 (where similar features are indicated by the same reference
numbers). In this embodiment, the wings 29 have straight side edges
32' extending from the suspension points 22 to the head and foot
ends 26, 27 of the mid-section 25, in order to provide wings 29
with a triangular profile.
[0080] The wings 29 in any of the embodiments may be made of any
suitable woven material, for example, a lightweight man-made fabric
suitable for camping situations, such as a polyester or nylon
material, preferably including a rip-stop fibre within the weave.
An example would be a rip-stop nylon. The fabric could also be made
from fibres like cotton or silk, or indeed any mixture of natural
fibres with man-made fibres so long as the fabric is sufficiently
strong for its purpose.
[0081] A woven fabric material, which will have a warp and a weft
arranged at 90.degree. to each other, has been found to distribute
forces from the user's weight in a more advantageous way than was
previously achievable with an array of ropes 9. This is because the
fabric will stretch under load, particularly along the bias of the
fabric (45.degree. to the warp and weft), as the warp and weft are
caused to pull apart slightly. This in turn helps to spread the
load diagonally within the panel as well as along the fibre
direction, and in this way it can avoid stress concentrations which
might cause a seam to pull apart. The seams might be formed by
stitching, gluing, welding, or any combination of these, and may
comprise a locked or double locked arrangement.
[0082] Some possible outline shapes of the wings 29 are shown in
more detail in FIGS. 4A, 4B and 4C. The fabric of the wings 29 may
be orientated in two main directions, namely with the warp/weft (as
indicated by the crossed arrows in the figures) arranged
substantially aligned with a principal direction of tension T in
the wings 29 which runs from the top corner down the middle of the
wing 29 as shown in FIG. 4A (the warp/weft will also be aligned
with the imaginary line 24 extending between the suspension points
22 when viewed from above), and with the warp/weft inclined to the
principal direction of tension T (and the line 24 extending between
the suspension points 22 when viewed from above), preferably at
around 45.degree., as shown in FIG. 4B. FIG. 4C shows a triangular
wing with the warp/weft aligned with the lateral edge 28.
[0083] Preferably the wings 29 are provided with a curved bottom
edge 33. Where the fabric is substantially aligned with the
principal direction of tension T, this may be provided as a smooth,
rounded convex section 33', and where the fabric is inclined to the
principal direction of tension T, e.g., at 45.degree., then the
curved bottom edge 33 may define rounded convex sections 33' at the
ends towards the side edges 32, and a concave section 33'' towards
the middle of the bottom edge 33, giving it an undulating or wavy
profile as shown. When the wing 29 is under load from the weight of
a user, the wing 29 stretches causing this bottom edge 33 to
straighten and thereby match the straight or generally straight
lateral edge 28 of the mid-section 25.
[0084] FIG. 5 shows a preferred arrangement of two wings 39 cut on
the bias (warp and weft orientated at 45.degree. to a principal
direction of tension T) arranged on opposite sides of the
mid-section 25. Each wing 29 has curved (scooped) side edges 32 to
provide a bell-shaped appearance, as well as an undulating bottom
edge 33 to encourage the mid-section 25 to achieve a flat profile
when under load. The orientation of the fabric for the mid-section
25 is preferably standard and aligned with the warp and weft
parallel/perpendicular to its lateral edges 28/head and foot ends
26, 27.
[0085] FIG. 6 shows details of the bell-shaped wings 29 in more
detail. Thus the wings may be configured so that the side edges 32
of the wings 29 curve inwardly and converge towards a given
suspension point 22 at an angle .alpha. that is less than an angle
.beta. subtended by two imaginary lines .beta..sub.1, .beta..sub.2
radiating from the suspension point 22 to the head end 26 and to
the foot end 27 of the mid-section 25 respectively. As a result,
the wings 29 are significantly narrower adjacent the suspension
points 22 than they would be if they had been cut from a triangular
piece of fabric having straight edges extending to the head and
foot ends 26, 27. This curve in the side edges 32 helps to direct
load being transmitted diagonally within the wings 29 and from the
head and foot ends 26, 27 along the side edges 32 of the wings 29
up towards the suspension point 22 without distorting the
appearance of the wing 29.
[0086] The angle .alpha. may be centred about a principal line of
tension T as shown. The principal line of tension T follows the
surface of the wings from a suspension point 22, down the wing 29
to a centre of mass position C, indicated by the dashed line which
passes across the mid-section 25. Through this, a majority of the
weight on the hammock 20 is transmitted centrally up the wings 29
from the centre of mass point C within a relatively narrow band of
fabric lying generally along the principal line of tension T
(.alpha./2) and within the sector of angle .alpha. as defined by
the imaginary lines .alpha..sub.1 and .alpha..sub.2 projecting the
convergence of the side edges 32 of the wing 29. As indicated in
the figure, this central portion of the fabric within the lines
.alpha..sub.1 and .alpha..sub.2 may be only around a third of the
angular width of the area between the lines .beta..sub.1 and
.beta..sub.2 extending to the head end 26 and foot end 27 of the
mid-section 25.
[0087] By carrying the weight of the user in this way, it assists
with providing further functionality to the hammock 20. For
example, as shown in FIG. 7, the hammock 20 may be provided with
controls, for example, in the form of one, preferably two, sets of
lines of adjustable length 34 for reducing, whilst in use, at a
location along each opposing lateral edge 28 of the mid-section 25
that might be for example, a region behind the shoulders of the
user or a region behind the knees of the user, a distance between
that location and the respective suspension point 22. By reducing
the distance of the line 34, it can raise the shoulder or knee
region of the mid-section 25 and thereby change the shape of the
mid-section 25 from a first configuration (e.g., a flat
configuration for sleeping as shown in FIG. 7) to a second
configuration (e.g., back raised configuration for relaxing as
shown in FIG. 8) or to a third configuration (e.g., back and knees
raised configuration for sitting up in the hammock 20 as shown in
FIG. 9, which shows a front perspective view of another preferred
embodiment of the hammock). The user can also use these controls to
adjust the profile of the mid-section for the most preferred
sleeping position.
[0088] Preferably, each of the lines of adjustable length 34 extend
from a suspension point 22 to a hoisting web 35 as illustrated,
which spreads the forces over a section of the lateral edge 28. In
the same way as the wings 29, these hoisting webs 35 are preferably
bell-shaped with curved side edges 36, and preferably a rounded
bottom edge (of either a generally convex profile if the fibres of
the fabric are aligned with the lateral edge 28 or an undulating
profile with a concave section centred between two convex sections
if the hoisting webs 35 are aligned on their bias). The base edges
of the hoisting webs, as well as assisting to distribute load, also
help to make the lines of adjustable length 34 more suitable for a
range of different height users, particularly the lines for raising
the knees.
[0089] FIG. 12 shows an example of a line of adjustable length 34
in greater detail. Here the line 34 comprises two portions of
strap, one hanging down from the suspension point 22 (suspension
point 22 not shown) and holding a buckle 37, and the other
descending from the buckle 37, to a ring 38 at the top of the
hoisting web 35 where the side edges 36 converge, back up to the
buckle 37, and then returning in the opposite direction towards the
user, where it then terminates in a handle 39 for the user to pull
on.
[0090] The line of adjustable length 34 can of course take other
forms, for example, arrangements using ropes, pulleys, cleats
and/or ratchets, etc. The arrangement may provide a simple 1 to 1
relationship, i.e., the amount of line 34 pulled is equal to the
amount the region is raised, or it may provide a greater degree of
purchase, e.g., as a 1 to 2 (as shown in FIG. 12), 1 to 3, 1 to 4
purchase, etc., depending on the amount of effort desired.
[0091] FIG. 9 illustrates a preferred embodiment of the hammock 20
in use in a seated configuration, with FIG. 10 showing the hammock
adapted for use in a camping scenario. The hammock 20 is suspended
from a pair of trees (not shown) via lines 23 that attach to the
suspension points 22. Then over the top of the hammock 20, a
flysheet or canopy 40 is provided, which is either suspended over
the ridge line 24a of the hammock 20, or more preferably, is
suspended from additional lines 41 extending to the trees. The
canopy 40 is further pulled taut using guys 42 which extend to the
ground.
[0092] In the embodiments of FIGS. 9 and 10, the hammock 20 is
provided with a footbox 43, comprising a specially shaped pocket of
fabric having an expandable section 44 for the user's toes to
extend into without introducing tension into the fabric.
[0093] FIG. 11A is a perspective view of a hammock 20 fitted with a
bug net 31. The bug net 31 can be provided with a zip or some other
form of detachable connection which runs around the upper region of
one wing 29, across the top edge of the footbox 43, around the
upper region of the other wing 29 and across the fabric at the head
end 26 of the mid-section 25. The top of the bug net 31 may be
provided with a carabiner 45 or other connector for hooking on to
the ridgeline 24a.
[0094] FIG. 11B shows the hammock arrangement of FIG. 11A being
used with a flysheet 40 that is suspended from additional lines 41
and pulled taut by guys 42.
[0095] FIG. 13 shows a perspective view of another embodiment of
the hammock 20. As with the embodiments of FIGS. 2A and 2B, the
hammock 20 comprises a mid-section 25 that is supported from a pair
of suspension points 22 by a pair of fabric wings 29. As with the
embodiment of FIGS. 7 to 9, the hammock is further provided with
lines of adjustable length 34 for raising the shoulders and the
knees of the user. However, in this embodiment, the hoisting web
35' is common to both lines 34. Thus the hoisting web 35' comprises
at least two apexes, more preferably three, where the side edges 36
converge, with the lines of adjustable length 34 being connected to
at least two of these. The whole of the base edge 46 of the common
hoisting web 35' may be connected to the lateral edge 28 as shown.
The lines of adjustable length 34 may be connected at their upper
ends to the suspension point 22 or to a centrally extending line 47
as shown.
[0096] FIG. 14A is a cross-section through a hammock 20 showing a
pocket 48 within the mid-section 25 housing a sleeping pad 49. The
pocket 48 is provided with a first pouch 50a in the head end 26 and
a second pouch 50b in the tail end 27. By hooking the sleeping pad
49 into one or both of these internal pouches 50a, 50b, the length
of the mid-section 25 can be effectively shortened with respect to
the sleeping pad 49, enabling the hammock 20 to accommodate a wide
range of different lengths of sleeping pad 49 while maintaining
tautness in the mid-section 25. The pouches 50a, 50b also help to
prevent the sleeping pad 49 from moving about within the pocket 48
during use.
[0097] FIG. 14B illustrates a cross-section through another
preferred hammock 20 which has a first pouch 50a in the head end
26, but has two longitudinally spaced (with respect to a length
direction of the mid-section 25) pouches 50c and 50d in the tail
end 27. The pouches 50c and 50d can be suitably spaced to
accommodate two main sizes of sleeping pad 49, the user choosing
the appropriate pouch 50c, 50d according to the fit of the sleeping
pad 49.
[0098] If desired an additional pouch may be provided in the head
end 26 of the mid-section 25 either as an alternative to the extra
pouch 50c in the tail end 27 or in addition to it, for example at
half the spacing, in order to provide a further range of possible
sizes. Further, a strap or other tightening mechanism could be
provided on one or more of the pouches 50a, 50b, 50c, 50d to
provide further adjustment and holding of the sleeping pad 49 in an
appropriate position under the user.
[0099] As the weight of the user can be mostly carried by the
bottom layer of fabric of the mid-section 25, the sleeping pad 49
within the pocket 48 is kept close to the body of the user,
increasing the warmth and comfort of the user.
[0100] The fitting of the sleeping pad 49 within the pocket 48 of
the mid-section 25 is shown in more detail in the perspective view
of FIG. 15A. In this arrangement, the pocket 48 may be accessible
from both the head end 26 and foot end 27 in order to slide the
sleeping pad 49 into the pocket 48 and into one or both of the
pouches 50a, 50b. FIG. 15B shows how a sleeping pad can be slid
over a first pouch 50d and into a second pouch 50c positioned
further up the mid-section 25 as a way to shorten the effective
length of the pocket 48 for a shorter sleeping pad 49. In this way,
the pocket 48 can be arranged to accommodate easily different
lengths of sleeping pad, whilst preventing it from sliding down the
pocket when the hammock 20 is in use.
[0101] FIG. 16A is a perspective view of a further embodiment of
the hammock 20. In this example, no lines of adjustable length 34
are shown, though could be incorporated if desired. On either side
of the mid-section 25, extending along each lateral edge 28, is
provided an inflatable tube 51. The inflatable tubes 51 help to
stretch out the mid-section 25 and transfer the load of the user to
the wings 29 appropriately. The inflatable tubes 51 may each be
provided within a cylindrical pocket 52 and provided with a valve
53 for inflating by mouth, pump (e.g., bag pump) or other means, as
shown in the enlargement of FIG. 16B. The position of the valve, of
course, is not critical. Such a hammock arrangement may also
include a pocket in the mid-section 25 for a sleeping pad (not
shown) located between the inflatable tubes 51.
[0102] FIGS. 16C and 16D show a perspective view and enlargement
respectively of another preferred embodiment where the inflatable
tubes 51 of FIGS. 16A and 16B have been replaced with a single
inflatable tube 51 in the form of a loop that extends completely
around the perimeter of the mid-section 25 (e.g., from the valve
53, up one lateral edge 28 across the head end 26, down the other
lateral edge 28 and across the tail end 27 back to the valve 53).
This has the advantage that only a single valve mechanism is
required and it also makes it slightly quicker to erect the
hammock.
[0103] FIGS. 16E and 16F show yet another preferred embodiment,
firstly as a partial perspective view in FIG. 16E (one wing 29 has
been left off for ease of viewing) and secondly as a
cross-sectional view in FIG. 16F. In this embodiment the inflatable
tube 51 extends only part way around the perimeter of the hammock
20. Thus it extends as shown from the valve 53 at the tail end, up
along one lateral edge 28, across the head end 26 and down the
other lateral edge 28 to the tail end 27. Again, the position of
the valve 53 is not fixed and it could be positioned anywhere along
this inflatable tube 51. In this embodiment, the portion of the
inflatable tube 51 at the head end 26, as well as connecting up the
lateral edge portions of the tube 51 to avoid the need for an
additional valve, acts as a frame to support the upper edge of the
head end 26 and any bug net to keep them from coming into contact
with the user's face. An additional web of material 29' may be
provided extending from each side edge of the wing 29 to support
the head and tail ends 26, 27 of the hammock 20 further. Together
such modifications can help to create more room inside the hammock
20 as desired.
[0104] The arrangements with one or more inflatable tubes 51 are
also less reliant on the sleeping pad 49 for stretching out the
mid-section 25. In these embodiments the sleeping pad 49, if
fitted, can be mounted further down in the structure of the
mid-section 25, allowing for additional comfort layers to be
incorporated between the sleeping pad 49 and the user. In one
example, in place of a sleeping pad, an under-quilt may be
suspended or attached underneath the mid-section 25, for example,
using releasable fasteners or hook and eye material to hold it in
place under the inflatable tube(s) 51. This might offer a more
comfortable or breathable solution for some climates.
[0105] While the foregoing has described a hammock intended for one
user, it would also be possible for the hammock to be arranged to
accommodate two people, for example, lying in a side by side
arrangement. To prevent the two occupants rolling together, the
centre of the mid-section may be supported by a connection to a
ridge line. Thus there can be seen to be disclosed a hammock
comprising: a pair of suspension points provided on opposed sides
of the hammock that the hammock is arranged to suspend from in use;
a mid-section for supporting one or more users' bodies in a
direction substantially transverse to a line between the suspension
points; and a pair of wings extending outwardly from opposing
lateral edges of the mid-section substantially to the suspension
points.
[0106] Preferably such a hammock includes a ridge line extending
between the suspension points. Preferably the mid-section includes
a leash or supporting web of fabric connected to a central part of
the mid-section to suspend this part of the hammock from the ridge
line. Any or all of the previously described preferred features may
also be read in conjunction with such a two-person transverse
hammock without restriction.
[0107] FIG. 17 is a perspective view of such a two-person hammock
60. The hammock 60 comprises a pair of suspension points 62
provided on opposed sides of the hammock that the hammock is
arranged to suspend from in use. It further comprises a mid-section
65 that is configured to support two users, both lying in a
direction substantially transverse to an imaginary line 64 between
the suspension points 62. The hammock 60 also comprises a pair of
wings 69, which extend outwardly from opposing lateral edges 68 of
the mid-section 65 substantially to the suspension points 62.
Between the suspension points 62 is arranged a ridgeline 64a that a
central region of the mid-section 65 can be supported by, for
example, by way of a central support 61 in the form of a leash or
central web(s) of fabric extending from the mid-section 65 to the
ridgeline 64a. The central support 61 may span the full length of
the mid-section 65 as shown from the head end 66 to the foot end
67.
[0108] FIG. 18 is a variation on this two-person hammock 60 in
which lines of adjustable length 74 have been included in order to
raise the shoulders or knees of the two users. If desired, the
hoisting webs 75 can be swapped for a common hoisting web, in a
similar way to FIG. 13. By pulling on these lines of adjustable
length 74, the users can be raised from a sleeping position (as
shown in FIG. 18) to a shoulders raised resting position (as shown
in FIG. 19) through to a fully seated, knees bent, sitting position
(as shown in FIG. 20).
[0109] FIG. 21 is a perspective view of a further embodiment of the
hammock 20 having a narrower pair of wings 29, the side edges of
which correspond essentially to the region enclosed by the lines
.alpha..sub.1 and .alpha..sub.2 bounding the angle .alpha.
illustrated in FIG. 6. Thus the base edge of these wings 29 might
correspond to around a third of the length of the lateral edge 28,
such that the wings 29 are arranged to carry the majority of the
weight of the user which will be experienced in the middle of the
mid-section 25. To support the head end 26 and foot end 27 of the
mid-section 25, a set of lines (ropes or straps) and load
distributing webs 29a are provided connected to the lateral edges
28 of the mid-section 25. In the embodiment shown, the hammock 20
comprises three sets of lines and load distributing webs 29a at the
head end 26, and four sets of lines and load distributing webs 29a
at the foot end 27. However, other arrangements are envisaged and
it would be possible to replace these with other configurations of
lines, such as a single line and load distributing web 29a at one
or each of the head end 26 and foot end 27. The hammock 20 could
also be adapted to include lines of adjustable length 34 in order
to raise the shoulders and/or the knees of the user. It would also
be possible to provide a two-person version of this hammock
following similar principles to those described in relation to the
hammock of FIGS. 17 to 20.
* * * * *