U.S. patent number 3,874,397 [Application Number 05/386,559] was granted by the patent office on 1975-04-01 for foldable tent.
This patent grant is currently assigned to Heinrich Zangenberg GmbH & Co.. Invention is credited to Wilhelm Oberhaus.
United States Patent |
3,874,397 |
Oberhaus |
April 1, 1975 |
FOLDABLE TENT
Abstract
Tent having a folding supporting framework and a tent cloth
forming a roof portion. The supporting framework has stays,
together with a clamping device, the stays leading down to the base
corners of the tent and being hinged to a central member which,
when the tent is erected, supports the center of the roof. The
stays have bottom sections which can be folded outwards into an
extended position in line with respective upper stay sections. The
tent may have a closable entrance.
Inventors: |
Oberhaus; Wilhelm (Osnabruck,
DT) |
Assignee: |
Heinrich Zangenberg GmbH &
Co. (Osnabruck, DT)
|
Family
ID: |
5853090 |
Appl.
No.: |
05/386,559 |
Filed: |
August 8, 1973 |
Foreign Application Priority Data
Current U.S.
Class: |
135/98; 135/126;
135/116; 135/117 |
Current CPC
Class: |
E04H
15/28 (20130101) |
Current International
Class: |
E04H
15/00 (20060101); E04H 15/28 (20060101); A45f
001/04 () |
Field of
Search: |
;135/2,3C,4R,4B,5E |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
442,987 |
|
Dec 1948 |
|
IT |
|
1,540,516 |
|
Aug 1968 |
|
FR |
|
Primary Examiner: Gilliam; Paul R.
Assistant Examiner: Corbin; David H.
Claims
What is claimed is:
1. A tent having a folding supporting framework and a tent cloth
forming a roof portion and a floor portion integral with said roof
portion, the supporting framework comprising a central member and
stays together with a clamping device for them, the stays leading
down to the base corners of the tent and being articulated to the
central member, the central member supporting the center of the
roof when the tent is erected, the stays having upper and bottom
sections, the bottom sections of the stays being foldable outwards
to an in-line extended position with respect to the respective
upper stay sections, the extended sections of the stays giving the
tent a polygonal plan form of substantially hemispherical shape,
the two sections of the stays being formed of elastically flexible
spring rods of substantially identical length, the bottom sections
of the stays at their bottom ends projecting beyond the tent cloth
at the bottom corners of the tent in both the erected and folded
conditions, the roof portion of the tent cloth being attached to
the central member of the supporting framework and also, at its
bottom edge and at intermediate points, to the stays, braces
between the slide and the upper sections of the stays, and the
clamping device comprising a slide which can be vertically
displaced relatively to the central member and locked in an upper
clamping position in which the stays are deflected outwards by
means of said braces between the slide and the upper stay sections,
said floor portion is attached to said roof portion, and said floor
portion is sewed to the roof portion of the tent cloth at a
location spaced from the bottom edge of said roof portion, the
section of the floor portion which is spaced from the bottom edge
of said roof portion follows the general contour of the roof
portion and extends upwardly from the ground surface when the tent
is fully erected, the bottom ends of the stays passing to the
outside through the tent cloth.
2. A tent as claimed in claim 1, in which the ends of each of the
stays which are outside the tent cloth are equipped with a ring for
attachment of the tent to the ground.
3. A tent as claimed in claim 1, in which the central member forms
the top end of a short pole provided with a detachable extension
that can be locked to said short pole.
4. A tent as claimed in claim 1, having one or more ventilation
flaps provided in the roof portion of the tent cloth.
5. A tent as claimed in claim 1, comprising a closable entrance
through the tent cloth.
6. A tent as claimed in claim 5, wherein the closable entrance is
disposed between two successive stays.
Description
The present invention relates to a tent having a folding supporting
framework and a tent cloth forming a roof portion. The supporting
framework has stays, together with a clamping device, which lead
down to the base corners of the tent and are articulated to a
central member which, when the tent is erected, supports the center
of the roof. The stays have bottom sections which can be folded
outwards into an extended position in line with respective upper
stay sections. The tent may have a closable entrance.
In a well-known tent of this kind, the supporting framework
consists of four stays made up of three sections each, which are
basically rigid and in each case have to be attached together in
their erected position by means of special rocking elements. These
stays give the tent a frusto-pyramidal shape, with a flat upper
roof portion which is not connected with the tent cloth except at
the internal, bottom ends of the stays. The stay sections adjoining
the central member, are longitudinally displaceable in sockets and
secured by means of pinchbolt connections, a coil compression
spring associated with each stay section functioning to tension the
erected supported framework.
The erection of the above-described known tent is a laborious and
time consuming procedure, and is additionally complicated by the
fact that the tent cloth does not naturally follow the movement of
the stays. Consequently, the erection and dismantling of the tent
generally requires two people. Furthermore, the extremely heavy
supporting framework in the folded state occupies a considerable
amount of space, and is expensive to manufacture.
It is an object of the present invention to overcome or to mitigate
these difficulties.
The tent of the present invention has a folding supporting
framework and a tent cloth forming a roof portion, the tent having
a closable entrance. The supporting framework comprises stays
together with a clamping device for such stays, the stays leading
down to the base corners of the tent and being articulated to a
central member. When the tent is erected the central member
supports the center of the roof; the stays have bottom sections
which can be folded outwards into an extended position in line with
the respective upper stay sections. The stays, which give the tent
a polygonal form in plan, such form being substantially
hemispherical. The stays comprise two sections and form elastically
flexible spring bars or rods of identical length which, at their
bottom ends at the bottom corners of the tent, project beyond the
tent cloth. The roof portion of the tent cloth is attached to the
central member of the supporting framework, and is also attached at
its bottom edge and at intermediate points to the stays. The
clamping device consists of a slide which can be vertically
displaced relatively to the central member and can be locked in an
upper clamping position in which the stays are deflected outwards
by means of yokes between the slide and the upper stay
sections.
In accordance with one embodiment of the invention, when the tent
is designed with a tent cloth consisting of a roof portion and a
floor portion attached thereto, the floor portion of the tent cloth
is sewed to the roof portion thereof at a location spaced from the
bottom edge of the stays passing through the tent cloth to the
outside.
A tent in accordance with the invention obviates or mitigates the
difficulties of the prior art in a way which is as simple as it is
neat, the tent cloth and the structure being combined into a tent
unit whose erection and dismantling each takes no more than
seconds. The roof portion of the tent cloth, during the unfolding
and folding operations, follows the stay sections which are
tensioned and relaxed by the clamping device and are simply locked
and unlocked, during which it is insured that the tent cloth is
able to follow the bowing of the stays. This also applies to a tent
with a floor, because of the special method of attachment of the
floor.
The simplicity and ease of handling of the tent go hand-in-hand
with a low weight and a relatively low production cost.
Furthermore, the tent can be folded up to form an extremely small
package and can easily be carried in a rucksack. Accordingly, apart
from its use for conventional camping purposes, and because it
combines low weight, low cost, quick erection and dismantling and a
compact volume when folded for transport, the tent is particularly
useful for expeditions, folding boat trips, cycling tours, weekend
trips and similar applications where a tent is required, for
overnight stops, as weather protection and/or as protection against
the sun.
An illustrative embodiment of the present invention will now be
described, by way of example, with reference to the accompanying
drawings, in which
FIG. 1 is a view in perspective of a tent in accordance with the
invention, the tent being in the erected condition;
FIG. 2 is a schematic view in side elevation of the tent shown in
FIG. 1, the tent being partially folded; and
FIG. 3 is a view of the tent similar to FIG. 2, the tent being
fully folded .
The tent illustrated herein consists essentially of a tent cloth
with a substantially hemispherically cut roof portion 1, a
polygonal floor portion 2 permanently sewed on or into the roof
portion 1, and a supporting framework 3 which can be folded (FIG.
3) or unfolded (FIG. 1).
In the erected condition shown in FIG. 1, the tent has the
approximate form of a hemisphere with a polygonal in plan shape.
However, the tent could equally well be given the shape of an oval
body, by altering the cut of the roof portion, without modifying
the supporting framework.
The supporting framework 3 here shown comprises eight stays 5, each
of which consists of two sections 5a and 5b which are of
substantially the same length, and are made from elastically
flexible spring bars or rods. The upper stay sections 5a are hinged
at their top ends to a central member 4 (designed along the lines
of an umbrella) of the supporting framework 3 in such a fashion
that they be pivoted in a limited range and can be deployed, from a
folded inoperative condition (FIG. 3) in which they are
substantially parallel to the axis of the central member 4, into a
radial outward-extending operative position (FIG. 1). The upper
stay sections 5a are hinged to the bottom stay sections 5b by
hinges 9 which make it possible to fold the bottom stay sections 5b
outwardly from the extended position shown in FIG. 1, in which they
form extensions of the respective one of the upper stay sections
5a, into a position in which they are parallel to the upper stay
sections 5a, as shown in FIG. 3.
The central member 4 forms the top end of a relatively short pole 8
which can be provided at its lower end with an extension 8a. This
extension 8a can be releasably attached to the pole 8, e.g. by
means (not shown) which may be for example, a screw fitting or a
bayonet connection. A slide 7 can be slid vertically relatively to
such member 4; bracing elements 6 are hinged to sleeve 7 at their
inner ends. Bracing elements 6 are in the form of a rod which,
through a fork end, are articulated by means of hinges 10
substantially to the center part of respective upper stay sections
5a. In its upper, locked position, the slide 7 can be retained on
the pole 8, near the bottom end of the latter, by means of a
schematically illustrated locking element which engages a detent
recess in the pole 8. Such locking element may have as a component
part thereof a pushbutton 11 by which it may be operated.
The roof portion 1 of the tent cloth is affixed to the central
member 4 of the supporting framework 3, and is attached at its
bottom edge to the bottom ends of the stays 5. This attachment can
be of limited elasticity in order to permit small relative
movements to take place, e.g. by the inclusion of a small series
connected rubber loop not shown. Furthermore, the roof portion 1 is
secured to the stays 5 at several points to the bottom ends thereof
and the central member 4, so that said roof portion 1 of the tent
cloth follows the movements of the stay sections 5a and 5b when the
supporting framework 3 is unfolded and folded. The bottom ends of
the stays 5 project beyond the bottom edge of the roof portion 1 of
the tent cloth for a short distance; on the bottom ends of the
stays 5 rings 12 pass through holes in the tent cloth. Tent pegs
can be introduced into rings 12 in order to anchor the tent to the
ground.
If the tent is designed with a tent cloth in which the roof portion
1, as in the illustrated example, is united to a floor portion 2,
then the bottom ends of the stays 5 pass through the tent cloth to
the outside, and the floor portion 2 is sewed to the roof portion
at a location spaced from the bottom edge of the roof portion. With
this design, the floor portion 2 extends from the seam joining it
to the roof portion 1, in a downward direction when the tent is in
the erected condition, the floor portion then resting on the
surface upon which the tent has been erected. Consequently, the
floor is not tensioned when the tent is erected, but through the
agency of its outer edge portion, rising from the ground level to
the level of the seam connecting portions 1 and 2, provides
facility for compensation when the stay sections are folded
together. This purpose is also served, in the embodiment of the
tent which has a sewn-in floor, by the passage of the bottom ends
of the stays through the tent cloth.
In the roof portion 1 of the tent cloth, between two stays 5, there
is an entrance 14 which can be closed by means of a fastener 13
such as a zipper. The top area of the roof portion 1 of the tent
cloth also contains a ventilation flap or opening 15 between two
stays 5.
The erecting of the tent, commencing with the completely folded
position of the parts shown in FIG. 3 is carried out as
follows:
First of all, the bottom stay section 5b complete with the roof
portion 1 and floor portion 2 of the tent cloth secured to them are
folded outwardly in the manner illustrated in FIG. 2, which shows
an intermediate position of the parts of the tent. In this
intermediate position, the person erecting the tent can pass his
arm through the entrance 14 into the interior of the tent, and,
using a single movement, slide the sleeve 7 along the pole
extension 8a upwards into its upper locking position and lock it
there. As a consequence of this movement of the slide, the upper
sections 5a of the stays are folded upwards by means of the hinged
braces 6, and are moved into the extended position vis-a-vis the
bottom stay sections 5b which are connected thereto by hinges 9.
Thereafter, with continuing upward movement of the slide 7 towards
the central member 4, the stays 5 are bowed outwards throughout
their full lengths. This condition is shown in FIG. 1.
In the position in which the stays are bowed out, thus defining the
space of the tent, the hinges 9 are disposed past their dead center
position, thus insuring, in association with the action of the
braces 6, that the stays 5 are reliably stably fixed in shape. As
soon as the locking element of the slide, e.g. a locking extension
on the locking pushbutton 11, has engaged in the detent recess in
the pole 8, the overall tent is statically stiffened and its
erection is completed. The extension section 8a of the pole, which
facilitates the tensioning and relaxing of the supporting framework
3, can be removed in order to give the tent an unobstructed
interior. After erection of the tent in this way, the tent can be
secured to the ground by means of tent pegs in association with the
rings 12 at the projecting ends of the stays 5, and also
additionally so secured, if required, by means of tent ropes whose
tent ends are in each case attached to the stays 5, for example at
the level of the hinges 9 while their other ends are attached to
the ground by means of rings and tent pegs (not shown).
The tent is dismantled, commencing from the tensioned erected state
illustrated in FIG. 1, by following the reverse sequence of
operations. By unlocking the slide 7 and moving it down, the
supporting framework 3 is relaxed and its component parts are
displaced into the intermediate position shown in FIG. 2. The
bottom stay sections 5b are now folded, commencing from the
position shown in FIG. 2, whereupon any air still remaining inside
the tent is expressed by pressing or rolling it together into the
condition shown in FIG. 3. Thereafter, the tent can easily be slid
into a packing bag and is thus ready for transportation and for
subsequent re-use.
The stays 5 or stay sections 5a, 5b, which are made of spring
material, can, for example, be made of round-section wire, or
equally well of profiled rods, e.g. U-section rods. If made of
spring steel, for example, the stays are extraordinarily light and
neat, but nevertheless impart high stability of shape to the
tensioned erected tent, because of the tension in the supporting
framework. Instead of the eight stays illustrated, it is possible
to use 6, 7, 9 or more. Eight stays, however, has been found to be
a particularly suitable number from the point of view of
manufacturing cost, weight, foldability and other factors. The
hinges 9 can take the form of simple punched sheet metal pressings.
The tent cloth can be made of any material suitable for application
to tents, and normally, and indeed preferably, has a certain degree
of elasticity in order that it will not interfere with the folding
movements of the stay sections and on the other hand, in the
erected condition, to present a smooth, creasefree and pleasing
appearance. Instead of the pole 8, which in the illustrated example
is fixed to the central member 4, it is also possible to employ a
correspondingly short pole to the slide 7, which in this case is
secured in the slide 8, extend upwards therefrom, and can be locked
at its upper end to the central member 4.
Although the invention is illustrated and described with reference
to a plurality of preferred embodiments thereof, it is to be
expressly understood that it is in no way limited to the disclosure
of such a plurality of preferred embodiments, but is capable of
numerous modifications within the scope of the appended claims.
* * * * *