U.S. patent number 3,648,299 [Application Number 05/032,089] was granted by the patent office on 1972-03-14 for collapsible sauna.
Invention is credited to David L. Durst.
United States Patent |
3,648,299 |
Durst |
March 14, 1972 |
COLLAPSIBLE SAUNA
Abstract
The sauna includes a collapsible enclosure having front and rear
walls joined by foldable sidewalls with upper and lower walls
hingedly affixed to the rear wall for movement into horizontal
positions to form a complete enclosure in the extended position. An
adjustable heating element and water containing device associated
therewith are affixed to the rear wall to provide the desired heat
and humidity during operation.
Inventors: |
Durst; David L. (Houston,
MN) |
Family
ID: |
21863043 |
Appl.
No.: |
05/032,089 |
Filed: |
April 27, 1970 |
Current U.S.
Class: |
4/524; 219/400;
392/394; D25/16; 220/6; 392/444 |
Current CPC
Class: |
A61H
33/06 (20130101); A61H 33/066 (20130101); A61H
2201/0161 (20130101) |
Current International
Class: |
A61H
33/06 (20060101); A61h 033/06 () |
Field of
Search: |
;4/160,164,163,162
;52/71 ;128/256,367,366,365 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Artis; Henry K.
Claims
What is claimed is:
1. A collapsible sauna comprising:
a. vertically extending, rigid front and rear walls each having an
upper, a lower and two side edges, said rear wall having top,
bottom and side flanges around the edges thereof extending toward
said front wall to form with said rear wall a box-like
structure;
b. oppositely disposed foldable side walls pivotally affixed to the
side edges of said front wall and to the edges of said side
flanges, said side walls each comprising two hingedly connected
portions and being inwardly foldable for allowing movement between
an extended position wherein said side walls are each co-planar to
define an enclosure and a collapsed position wherein said front and
rear walls move adjacent each other;
c. a rigid upper wall hingedly affixed to said top flange for
movement between an extended position wherein said upper wall
completes the enclosure and a collapsed position within the
box-like structure;
d. a door hingedly attached to an opening in said front wall;
e. an adjustable heating element operatively mounted to said rear
wall within said box-like structure;
f. means associated with said heating element adapted to receive
water therein for providing a humid, relatively high temperature
within the enclosure; and
g. a rigid lower wall hingedly affixed to said bottom flange for
movement between an extended floor position and a collapsed
position within the box-like structure.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
During recent years saunas which are bath houses for relatively low
humidity, high heat type of baths, have become increasingly more
popular. The sauna is utilized as a relaxing, body conditioning
type activity, rather than cleansing.
Description of the Prior Art
All known prior art saunas are constructed as a separate room,
useful only as a sauna. Because of the expense of providing a
special room for the sauna and the amount of space utilized
thereby, it is relatively difficult and expensive to provide a
sauna in the average house.
SUMMARY OF THE INVENTION
The present invention pertains to a collapsible sauna including
front and rear walls joined by foldable side walls with upper and
lower walls hingedly attached thereto for completing an enclosure
in an extended position and further including an adjustable heating
element mounted within said enclosure and means associated
therewith for receiving water to provide the desired humidity and
temperature.
It is an object of the present invention to provide a new and
improved collapsible sauna.
It is a further object of the present invention to provide a
collapsible sauna which is easily installed in substantially any
house, or other suitable structure, and which requires
substantially no additional room in the collapsed position while
providing a highly useful sauna in an extended position.
These and other objects of this invention will become apparent to
those skilled in the art upon consideration of the accompanying
specification, claims and drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to the drawings, wherein like characters indicate like
parts throughout the figures:
FIG. 1 is a view in perspective of the collapsible sauna in an
extended position;
FIG. 2 is a view in perspective of the collapsible sauna in a
collapsed position;
FIG. 3 is an enlarged view in top plan of the collapsible sauna in
a partially collapsed position;
FIG. 4 is a sectional view as seen from the line 4--4 in FIG. 3;
and
FIG. 5 is a view in exploded perspective of portions of the
structure of FIG. 1 illustrating construction details, portions
thereof broken away and shown in section.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the figures, the numeral 10 generally designates a
collapsible sauna having a rear wall 11, a front wall 12 and two
opposed side walls 13 and 14. The side walls 13 and 14 are hingedly
attached along the rear and front vertical edges thereof to the
rear wall 11 and front wall 12, respectively. Each of the side
walls 13 and 14 is formed in two sections hingedly attached
together to form a central pivotal joint 15. The hingedly connected
edges of each of the side walls 13 and 14 and the central pivotal
joints 15 cooperate to allow the side walls to fold inwardly from
an extended or enclosure-defining position to a collapsed position
in which the rear and front walls 11 and 12 fold together in an
accordionlike fashion. While a specific folding embodiment is
illustrated, it should be understood that variations and
modifications of this embodiment may be devised by those skilled in
the art, such as for example forming a plurality of foldable joints
in each of the side walls 13 and 14.
The rear wall 11 is formed with a flange 20 around the edges
thereof which extends inwardly toward the front wall 12 and forms a
shallow cavity or depression 21 in the inwardly directed surface of
the rear wall 11. An upper wall 22 is hingedly affixed along the
rear edge thereof to the upper edge of the rear wall 11 for pivotal
movement between a generally horizontal or extended position and a
downwardly depending or collapsed position. The upper wall 22 is
affixed to the rear wall 11 so as to be positioned within the
depression 21 in the rear wall 11 when the upper wall 22 is in the
collapsed position (as illustrated in FIG. 4). A lower wall or
floor 23 may optionally be included in the sauna 10. The lower wall
23 is hingedly attached along its rear edge to the lower edge of
the rear wall 11 for movements between an extended or generally
horizontal position and a collapsed or upwardly folded position.
When the lower wall 23 is in its upwardly folded position it lies
within the depression 21, as illustrated in FIG. 4. Thus, in the
collapsed position of the sauna 10 the upper and lower walls 22 and
23 fold into the depression 21 of the rear wall 11 and the two
sections of each of the side walls 13 and 14 fold into a flat
parallel orientation so that the entire structure requires very
little space.
A heating element 30 is fixedly mounted to the inner surface of the
rear wall 11 adjacent the lower end thereof. In this embodiment,
the lower wall 23 has an outwardly extending stop 31 adjacent each
edge thereof to prevent the lower wall 23 from damaging the heating
element 30 in the collapsed position. It should be understood that
stops might be affixed to the rear wall 11 adjacent the heating
element 30 to prevent the lower wall 23 from damaging the heating
element 30. The heating element 30 is adapted to be connected to a
suitable source of power, either permanently or through the use of
a standard plug arrangement, depending upon the particular way in
which the sauna 10 is mounted and used. A rheostat is connected in
the energizing circuit of the heating element 30 and controllable
through a knob 32, mounted on the outwardly directed surface of the
rear wall 11, to control the amount of electrical power supplied to
the heating element 30 and, thus, the amount of heat produced
thereby. It should be understood that other types of heating
elements might be utilized and the amount of heat supplied thereby
can be varied through a variety of apparatus and methods to control
the heat within the sauna 10.
Mounted directly above the heating element 30 so as to be generally
in contact with the frame thereof are water receiving means, which
in this embodiment is an elongated trough 35. The elongated trough
35 extend across the entire width of the heating element 30 and
contains a plurality of heat retaining objects 34, such as rocks,
pieces of metal, or the like. The trough 35 may be permanently
attached to a source of water or it may simply have a portable
container associated therewith which is filled with water
externally and brought into the sauna 10 for introducing the water
into the trough 35. A light 36 is mounted to the inwardly directed
surface of the rear wall 11 and protected from damage by the upper
wall 22 through stops 37, attached to the lower surface of the
upper wall 22. The light 36 is connected to the suitable source of
power through a switch 38, affixed to the rear wall 11 adjacent the
knob 31 for convenience.
A door 40 is hingedly mounted within an opening in the front wall
12 for outwardly opening movements. The door 40 is mounted for
outwardly opening movements so that the sauna 10 can be
conveniently moved to the extended position. In some instances, the
collapsible sauna 10 will be permanently affixed to the wall of a
structure, such as a house, and may actually be built into a wall
so as to be flush with the surface of the wall in the collapsed
position. In other installations, the rear wall 11 of the sauna 10
may simply be affixed to a wall so that the sauna 10 is collapsed
to a position adjacent to the wall during non-use. In either case,
the sauna 10 is moved to the extended position by opening the door
40 and moving the front wall 12 away from the rear wall 11 until
the side walls 13 and 14 are in the extended position. If a lower
wall 23 is included, the lower wall 23 is then pivoted downwardly
to the horizontal position to provide a floor and aid in
maintaining the sauna 10 in the extended position. The upper wall
22 is then pivoted upwardly to the horizontal position and locked
in place. In the present embodiment a spring biased detent 45 is
provided in the front wall 12. The detent 45 normally extends
inwardly from the inner surface of the front wall 12 toward the
rear wall 11 with the upper edge thereof forming a generally
horizontal surface and the lower edge thereof forming a ramp or cam
surface. As the upper wall 22 is pivoted upwardly the outermost
edge thereof engages the cam surface of the detent 45 and urges the
detent 45 into the front wall 12 so that the upper wall 22 can
pivot upwardly beyond the detent 45. As the upper wall 22 passes
the detent 45 the spring urges the detent 45 outwardly to prevent
the upper wall 22 from swinging downwardly out of the horizontal
position.
With the sauna 10 in the extended position, a relatively tight
enclosure is defined therein and an occupant simply adjusts the
knob 31 to obtain the desired heat within the enclosure from the
heating element 30. During the time the heating element 30 is
raising the heat within the sauna 10 or after the objects 34 are
sufficiently hot the occupant may pour a small quantity of water
over the objects to provide the desired humidity within the sauna
10. In general, the occupant will only pour small amounts of water
over the objects 34 periodically rather than filling the trough
35.
Upon completing the sauna-type bath the occupant allows the sauna
10 to cool to a safe temperature whereupon he depresses the detent
45 manually and lowers the upper wall 22. The lower wall 23 is then
raised and the front wall 12 is moved toward the rear wall 11 in
accordian-like fashion to collapse the entire sauna 10 into a
convenient size for storage.
Thus, a collapsible sauna is disclosed which is relatively
inexpensive to construct and which requires very little room, since
it can be conveniently collapsed and stored. While I have shown and
described a specific embodiment of this invention, further
modifications and improvements will occur to those skilled in the
art. I desire it to be understood, therefore, that this invention
is not limited to the particular form shown and I intend in the
appended claims to cover all modifications which do not depart from
the spirit and scope of this invention.
* * * * *