U.S. patent number 3,866,619 [Application Number 05/475,187] was granted by the patent office on 1975-02-18 for pole system.
This patent grant is currently assigned to Barracudaverken Aktiebolag. Invention is credited to Karl Per Frisk.
United States Patent |
3,866,619 |
Per Frisk |
February 18, 1975 |
POLE SYSTEM
Abstract
There is provided a unitary pole system for pitching a
camouflage net or any similar cover, comprising at least two
telescopically arranged tube members, which are arranged to be
extended out of each other by means of straps. Each strap is fixed
at the bottom end of an inner tube member and runs in the play
between adjacent tube members. The strap may be locked in a slot in
the upper edge of the outer tube member. The tube members are
prevented from leaving each other by means of strings, which each
extends between the bottom ends of adjacent tube members.
Inventors: |
Per Frisk; Karl (Orsa,
SW) |
Assignee: |
Barracudaverken Aktiebolag
(Djursholm, SW)
|
Family
ID: |
23886558 |
Appl.
No.: |
05/475,187 |
Filed: |
May 31, 1974 |
Current U.S.
Class: |
135/114; 135/65;
135/87; 135/904; 248/354.1; 280/823; 403/377; 403/109.7; 135/118;
248/188.5; 248/423; 403/104 |
Current CPC
Class: |
E04H
15/60 (20130101); Y10S 135/904 (20130101); Y10T
403/32426 (20150115); Y10T 403/7077 (20150115); Y10T
403/32516 (20150115) |
Current International
Class: |
E04H
15/60 (20060101); E04H 15/32 (20060101); A45f
001/16 () |
Field of
Search: |
;135/15PQ,45R,46T,47,50,7.1R,17,18,19,2R ;280/11.37F
;403/109,343,377,104,112 ;248/333,354R,357,407,423,188.5
;272/57E,70.1,70.2 ;49/472 ;160/37 ;223/89,94 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Franklin; Jordan
Assistant Examiner: Berman; Conrad L.
Claims
1. A pole system for pitching a tent, a camouflage net, or any
similar cover, comprising
at least two tube members (3), which are telescopically and
slidably arranged within each other,
hoisting means (12) which at one end are fixed at the bottom end of
each inner tube member and extend upwards therefrom in the play
between adjacent tube members, and which have a length such that
their other ends grippably extend over the upper edge of the outer
tubes, and
locking means (14) at the upper end of each outer tube member,
permitting the hoisting means, and thus the tube members to which
they are fixed, to be locked in a desired position relative to the
surrounding tube members.
2. A pole system as set forth in claim 1, further comprising
restricting means (5), which are arranged between the bottom ends
of adjacent tube
3. A pole system as set forth in claim 1, wherein the hoisting
means are
4. A pole system as set forth in claim 1, wherein the locking means
is a
5. A pole system as set forth in claim 4, wherein the entrance
portion of the slot has a rounded V-shape, so as to permit the
strap to fold double
6. A pole system as set forth in claim 2, wherein the restricting
means (5)
7. A pole system as set forth in claim 1, further comprising a
spreader
8. A pole system as set forth in claim 7, wherein said spreader
means comprises a pin extending in the direction of the tube
members, and a pair of wings being pivotably fitted at the bottom
end of said pin, so as to be unfoldable in order to provide a wider
support of the net, while said pin is arranged to be introduced in
a hole in said cover, in order to keep the
9. A pole system as set forth in claim 1, wherein a groove
extending longitudinally in the outer surface of each inner tube
member is arranged
10. A pole system as set forth in claim 1, wherein at least the
outermost
11. A pole system as set forth in claim 1, wherein the outermost
tube member is provided with a removable cap, which is connected to
the
12. A pole system for pitching a camouflage net, attent canvas or
any similar cover, comprising
at least two cylindrical tube members which are telescopically and
slidably arranged within each other,
restricting means which are fixed at and extend between the bottom
ends of each pair of adjacent tube members,
hoisting means of which each is fixed at the bottom end of each
inner tube member, extends upwards in the play between adjacent
tube members, and extends over the upper edge of the surrounding
tube member a distance that permits gripping of the free end of the
strap when the inner tube members are to be lifted out of the outer
tube members, and
locking means in the form of a slot at the upper end of each outer
tube member, permitting a locking of each hoisting means by pulling
said hoisting means down into a slot so that said hoisting means is
wedged therein.
Description
The present invention concers a pole system for pitching a tent or
a camouflage net or any similar cover.
Especially for military use it is desireable to have access to a
pole system that can withstand rough treatment during transport and
handling and is easy to extend to desired length. It is further
desireable that such a pole system is unitary so that one does not
have to assemble several parts in order to achieve a working
pole.
One object of the invention is therefore to provide a unitary
extendable pole system.
Another object is to provide a pole system that does not have to be
kept in a separate transport case during transport.
Another object is to provide a pole system that is continuously
extendable.
Another object is to provide a pole system having a built-in
spreader means for enlarging the contact area between the pole and
the net.
The pole system according to the invention comprises basically a
telescopic tube system, wherein a number of tubes are adapted to
slidably fit within each other. Preferably, the tube members are
provided with bottom closures. Alternatively, the tubular members
may have the shape of cups.
The largest tube member may be used as the bottom pole while the
inner tube members are extended out of each other in order to
extend the pole system to desired length. Each tube member is
prevented from leaving its surrounding tube member, by means of,
for example, a string which is fitted at the bottom of each tube
member and is short enough to prevent them from leaving each
other.
In this pole system the bottom pole may itself be the transport
casing. A removable cap or lid for the casing may be fixed on a
strap which in turn is fixed near the open upper end of the
outermost tube or cup member.
In order to extend the pole system, there is provided a strap or
wire at the lower part of each of the internal tube members. These
straps or wires run in the space between each two adjacent tube
members and are adapted to be used as lifting means for raising
each tube member out of its surrounding tube member, thereby to
extend the pole system.
In order to fix two adjacent tube members in a desired position in
relation to each other, there is provided a fastening means for the
strap or wire near or at the upper edge of the tube members. This
means may, in the case with a strap, consist of a slot having a
smoothed-out vee-shaped entrance, in the upper edge of the outer
members. The strap may then be locked in this slot by simply
pulling it downwards into the slot. A surprisingly good locking
effect is obtained if the strap is two-folded when pulled down into
the slot. Further, this strap-and-slot arrangement permits an
interlocking of the tube members in any desired position.
Alternatively, the strap may be provided with slots or holes which
fit over a stud or knob that is arranged on or at the upper end of
the outer tube member. It is also possible to replace the straps by
wires or the like, which are locked in the vee-shaped in-cuts of
the tube members.
In order to prevent the straps or wires to be wound up around the
tube members, and to minimize the play between the tube members,
the cross-section of the tube members may be formed to house the
strap or wire in a longitudinal groove in the tube wall.
The tubes may consist of a metal, wood, plastic or fibre material,
but the actual choice of material has to be a compromise between
the costs for the specific material in question and the desired
effects obtained thereby.
Thus, for military uses it may be desireable to have a pole system
that has low weight and possibly also shall float in water. The
tube members should then be made out of a low density plastic or
wood. Alternatively, the bottom tube may be covered by a foam
plastic, whereby the pole system can float in water and can
withstand a rougher handling without becoming inoperable.
The invention will now be described in connection with the
accompanying drawing, therein
FIG. 1 is a partly cut out view of a camouflage net pitched by
means of pole systems according to the invention,
FIG. 2 is a longitudinal section through an extended pole system
according to the invention,
FIG. 3 is a view of a part of the pole system, showing a means for
interlocking two adjacent tube members of the pole system,
FIG. 4 is a longitudinal section through the pole system shown in
FIG. 2 but in folded-up condition, ready for transport, and
FIGS. 5 and 6 show alternative embodiments of the cross-sections of
the tube members of the pole system.
In FIG. 1 there is shown a camouflage net 1 pitched by means of
pole systems according to the invention, generally depicted by 2.
One such pole system is shown in FIG. 2 and 4 in extended and
folded-up condition, respectively.
The pole system 2 comprises a series of tubes 3a, 3b, 3c, which are
slidably fitted within each other, thus permitting a telescopic
type extension and retraction. Each of the tubes are provided with
a fixed closure 4 at their bottom end. Adjacent closures 4 are
connected to each other by means of a string 5 having a length that
is less than that of the outer tube, thereby preventing the tubes
from separating from each other when the pole system is
extended.
A lid 6 is provided at the upper end of the outermost tube 3a. This
lid 6 is connected to a strap or string 7 which in turn is fixed on
the tube 3a.
The innermost tube 3c is at its top provided with a spreader 8.
This spreader 8 may, however, be replaced by a brush or pad or some
thin flexible spokes, that can be housed within the outer tube 3a
when the pole system is folded-up.
In order to permit extension of the pole system 2, there is
provided a strap 12 at the bottom end of each inner tube 3b, 3c.
These straps 12 run in the gap between adjacent tubes and are
locked in a rounded tapered slot 14 having a straight lower
portion.
The locking is obtained by merely pulling the strap into the slot
14. Thanks to the V-shape of the slot the strap is automatically
folded double during the locking operation, and thereby the locking
effect is enhanced, as then also the elasticity of the strap can be
used for obtaining the locking.
The inner tubes 3b, 3c may be provided with grooves 15, which at
least partly house the straps 14, so that the play between the tube
members can be reduced. The tubes may also be out of round, d.f.
FIG. 6, so that the tube members cannot be turned in relation to
each other, whereby the risk that the straps should be jammed in
the gap between the tube members is minimized.
When, for example, a lorry is to be camouflaged by a net 1, the net
is loosely laid over the lorry and staked. The poles are then taken
inside the net and extended. The pole systems 2 are then readily
extended from transport condition, by opening the cap 6, lifting
the inner tube members 3b, c by means of the strap 12 on the tube
member 3b, locking said strap 12 in the slot 14 of the outermost
tube member 3a, lifting the innermost or top tube member 3c out of
the intermediate tube member 3b, and locking its strap 12 in the
slot 14 of the tube member 3b, and unfolding the spreader means 8,
whereupon the pole is placed at the desired position and possibly
adjusted by means of any strap-slot arrangement so that the net
gets the desired configuration.
As illustrated in FIG. 3, the strap 12 is folded to a vee-shape
when pulled down into the slot 14. Furthermore, the strap 12 is
turned "inside out" just outside the slot, as the strap is pulled
downwardly. This twisting or buckling of the strap provides an
enhanced locking effect, which further prevents the strap from
sliding back, which in turn prevents the pole from collapsing when
loads are applied, for example wind loads. This buckle of the strap
is automatically straightened out when the strap is lifted up, for
example when the length of the pole is to be adjusted.
While illustrative embodiments of the invention have been
described, it is to be understood that there may be various
embodiments and modifications within the general scope of the
invention.
* * * * *