U.S. patent number 3,871,143 [Application Number 05/374,042] was granted by the patent office on 1975-03-18 for building element for beach and play structures.
This patent grant is currently assigned to Walter J. Kreske. Invention is credited to Elwyn B. Quick.
United States Patent |
3,871,143 |
Quick |
March 18, 1975 |
BUILDING ELEMENT FOR BEACH AND PLAY STRUCTURES
Abstract
A building element for beach and play structures characterized
by a membrane having three sides in the form of an isosceles
triangle and having a rod-like stiffener fixed to and
circumscribing the three sides, the rod-like stiffener on each of
the three sides having two spaced-apart configurations for spring
clip type fastening to corresponding configurations on the rod-like
stiffener of a like adjacent building element to thereby make
possible rapid assembly and/or disassembly of a wide variety of
relatively inexpensive windbreak, sun shade and play structures. In
one embodiment, one of the two fastening configurations is in the
form of a cylindrical surface portion of the rod-like stiffener and
the other fastening configuration includes a pair of spring clip
legs extending from the rod-like stiffener. In a second embodiment
the rod-like stiffener has two offset cylindrical portions, each to
receive one side of a dual spring clip whose other side attaches to
a corresponding configuration on an adjacent, like building element
to thereby hold the building elements together to form an overall
unitary structure.
Inventors: |
Quick; Elwyn B. (Sudbury,
MA) |
Assignee: |
Walter J. Kreske (Newton,
MA)
|
Family
ID: |
23475007 |
Appl.
No.: |
05/374,042 |
Filed: |
June 27, 1973 |
Current U.S.
Class: |
52/309.1; D25/13;
D25/56; 52/82; 446/110; 52/81.6; D25/26; D25/121; 428/33; 446/476;
52/801.1 |
Current CPC
Class: |
F16B
5/0607 (20130101); E04C 2/40 (20130101); E04H
15/003 (20130101); E04H 15/006 (20130101); E04B
1/32 (20130101); E04B 2001/3276 (20130101); E04B
2001/3294 (20130101); E04B 2001/3288 (20130101) |
Current International
Class: |
E04C
2/40 (20060101); E04H 15/00 (20060101); E04B
1/32 (20060101); F16B 5/06 (20060101); E04c
001/10 (); E04c 001/30 () |
Field of
Search: |
;52/81,82,582,583,63,309,624,589 ;35/16 ;46/21,29,30,31
;160/135,229R |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
277,237 |
|
Nov 1951 |
|
CH |
|
634,877 |
|
Mar 1950 |
|
GB |
|
682,791 |
|
Nov 1952 |
|
GB |
|
Primary Examiner: Perham; Alfred C.
Attorney, Agent or Firm: Kreske; Walter J.
Claims
What is claimed is:
1. A building element for beach and play structures comprising in
combination, a membrane having three sides and corners in the form
of an isosceles triangle, a rod-like stiffener fixed to and
completely circumscribing said sides and corners to form a rigid
frame about said membrane and with said membrane a rigid unitary
panel, said rod-like stiffener having on each of said sides two
spaced apart configurations for spring clip type fastening and
adjusting over a wide angular range to corresponding configurations
on a rod-like stiffener of a like adjacent building element and
thereby make possible rapid assembly and dissassembly of like
building elements and a wide variety of said structures.
2. The combination as in claim 1 wherein one of said fastening
configurations is in the form of a cylindrical surfaced portion of
said rod-like stiffener and the other of said fastener
configurations includes a pair of laterally deflectable legs
extending outwardly from said rod-like stiffener and shaped to be
pushed onto and yieldably grasp a cylindrical surface similar to
that of said first mentioned fastening configuration.
3. The combination as in claim 2 wherein said membrane has a
plurality of strengthening ribs and an opening adjacent each
cylindrical fastening configuration to provide a clearance for legs
of the type forming the other of said fastening configurations.
4. The combination as in claim 3 wherein said membrane stiffener
and spring clip structure are of a molded plastic.
5. The combination as in claim 4 wherein the plastic is
polyethylene.
6. The combination as in claim 2 wherein the rod-like stiffener is
comprised of two mirror image sections with each having a flat
surface touching a respective surface of said membrane and firmly
fastened together with the sides of the membrane held between said
flat surfaces.
7. The combination as in claim 2 wherein the equal angles of said
isosceles triangle are between 65.degree. and 70.degree. each and
the height of the triangle is about 2 feet.
8. The combination as in claim 1 wherein all of the spaced apart
configurations on said sides are cylindrical surface portions of
said rod-like stiffener.
9. The combination as in claim 8 wherein each of said cylindrical
surface portions is offset from the remaining rod-like stiffener to
provide clearance for said spring clip type fastening to a
corresponding configuration on a rod-like stiffener of a like
adjacent building element.
10. The combination as in claim 1 wherein each of the fastener
configurations include an offset cylindrical surface portion of
said rod-like stiffener with at least one of said sides carrying on
at least one of its two offset cylindrical portions a double spring
clip comprised of two opposed pairs of laterally deflectable legs
pressurably gripping said offset cylindrical surface and the other
pair of laterally deflectable legs extending outwardly for
pressurably fastening to a similar offset cylindrical surface of a
rod-like structure of a like adjacent building element, the amount
of offset of said cylindrical surface portions being such that said
rod-like stiffeners of adjacent building elements will be in
abutting relation to each other when fixed in place by said dual
spring clip.
11. The combination as in claim 2 wherein said membrane has an
opening adjacent each cylindrical fastening configuration to
provide clearance for legs of the type forming the other of said
fastening configurations.
12. The combination as in claim 9 wherein said membrane has an
opening adjacent each of said cylindrical surface portions to
provide clearance for angular rotation of said spring clip on the
associated cylindrical surface.
Description
BACKGROUND OF THE INVENTION
This invention relates to building elements having a capacity for
rapid assembly and dissassembly of a wide variety of structures
suitable for use as windbreaks, sun shade and play structures and
the like, highly suitable for beach use or for children's play, and
more particularly to building elements for beach and play
structures, each made up of a membrane having three sides in the
form of an isosceles triangle, a rod-like stiffner fixed to and
circumscribing the three sides to form with the membrane a unitary
panel, the rod-like stiffener on each of the sides having two
spaced apart configurations for spring clip type fastening to
corresponding configurations on a rod-like stiffener of a like
adjacent panel to hold the panels together as a unitary structure.
One of the fastener configurations on the rod-like stiffener is in
the form of a cylindrical surface portion of the rod-like stiffener
and the other of the fastener configurations has a pair of
laterally deflectable spring clip legs extending outwardly from the
rod-like stiffener and shaped to be pushed onto and yieldably grasp
a cylindrical surface at a corresponding position on a rod-like
stiffener of an adjacent, like building element which also has a
like spring clip configuration for grasping the first mentioned
cylindrical surface portion to thereby hold the building elements
together as an integral structure with capacity for adding further
like building elements thereto in like manner.
Portable breakdown beach shelters as disclosed in U.S. Pat. No.
2,484,756 have a narrow limited value in that they fail to provide
for versatility or variation of structural arrangement to meet a
changing weather condition or space need.
Demountable buildings made of equilateral triangle sections such as
disclosed in U.S. Pat. No. 3,332,178 are impractical for beach or
play structures in that the individual sections are necessarily of
a heavy, cumbersome nature requiring trucking facilities and
substantial manpower for transporting and erecting. Triangular
structural elements such as disclosed in U.S. Pat. No. 3,296,755
are limited to creation of generally spherical buildings and lack
suitability for use as temporary beach and play structures.
Right triangle building components disclosed in U.S. Pat. No.
3,445,970 show greater variety of structures which may be erected
but lack the desired versatility and convenience in erection and
dissassembly in that, for example, adhesive tape is relied on for
joining individual components. Nor is the panel joining arrangement
for structural panels disclosed in U.S. Pat. No. 3,597,858 suitable
for the present invention in that it would unnecessarily limit
structural versatility as will appear as this description
progresses.
While the above mentioned building elements do perform their
functions in the limited area described, they do not have the
capacity to provide the versatility as to variety of different
structural arrangements possible, ease of assembling and
dissassembling such structural arrangements, ease in transporting
the structural elements to the point of use, and range of uses for
which the present invention is inherently applicable.
The present invention constitutes a significant advance in the art
since Applicant's building elements have the capacity for
constructing a large variety of building structures limited only by
the imagination of the individual doing the building, thereby
providing children with many hours of enjoyable and constructive
playtime, as well as providing adults with a relatively simple and
inexpensive means for readily erecting a cabana, windbreak, shade
or play structure of a size and type for the particular need such
as for a brief stay at a beach or resort, thereby providing greater
enjoyment of such stay.
Accordingly, it is an object of the present invention to provide a
building element having capacity for the construction of a wide
variety of useful structures.
Another object is the provision of a building element particularly
adaptable for the type of structures useful at a beach or for
play.
A further object is the provision of a building element which may
be relatively easily assembled with or dissassembled from other
like building elements.
And another object is the provision of a building elements which
readily lends itself to being light enough for even children to
carry and assemble and large enough for structures which even
adults may occupy.
And a further object is the provision of a building element which
has the capacity for providing an educational building experience
for children in the use of a basic geometric form.
Further objects include that of providing a building element which
is relatively inexpensive to manufacture, lends itself to mass
production from molded plastic materials, is sturdy enough to
withstand moderate winds and weather conditions at the beach and
the out of doors, and is simple enough for assembling and
dissassembling with other like building elements for even children
to grasp.
SUMMARY OF THE INVENTION
A buulding element for beach and play in accordance with one
embodiment of the invention includes a membrane having three sides
in the form of an isosceles triangle, a rod-like stiffener fixed to
and circumscribing said sides to form with said membrane a rigid
unitary panel, the rod-like stiffener having on each of the three
sides two spaced apart configurations in the nature of spring clip
arrangements for attaching to corresponding configurations on a
rod-like stiffener to a like adjacent building element to thereby
make possible rapid assembly of like building elements to each of
said three sides and rapid dissassembly when desired. One of the
two fastening configurations on each side is in the form of a
cylindrical surface portion of the rod-like stiffener and the other
of the fastening configurations includes a pair of laterally
deflectable spring clip legs extending outwardly from the rod-like
stiffener and shaped to be pushed onto and yieldably grasp a
cylindrical surface similar to that of the above mentioned
cylindrical surface fastening configuration, thereby making
possible rapid attaching and detaching of like adjacent building
elements on each of the respective three sides. In those instances
where greater structural strength is desired, the membrane may
include a plurality of strengthening and stiffener ribs. An opening
in the membrane adjacent each cylindrical surface fastening
configuration is preferably provided as clearance for the laterally
deflectable spring clip legs which yieldably grasp the cylindrical
surface to thereby substantially increase the the degree of angular
swing or adjustment possible between adjacent assembled panels and
make possible an increased range and complexity of structures from
the panels. The rod-like stiffener is preferably formed of two
half-round members, one on each side of the membrane, and fastened
together by conventional means such as a suitable cement, staples,
nails, rivets, screws, or in the event that the components are of a
thermoplastic, fastening may also be achieved by fusion of contact
areas by the application of heat and pressure. The building
elements lend themselves to particularly inexpensive construction
from a number of different plastics such as polyethylene,
polystyrene, polypropylene and the like.
A second embodiment of the invention contemplates that the two
fastener configurations on each of the sides are in the form of
offset cylindrical surface portions of the rod-like stiffener and a
separate double spring clip comprised of two opposed pairs of
laterally deflectable legs, each pair of legs being similar to that
described above with respect to the first embodiment. Each of the
pairs of spring clip legs are shaped to grip the corresponding
offset cylindrical surface portion of an adjacent like building
element. The amount of offset of the cylindrical portions is such
that the rod-like stiffeners of adjacent building elements will be
in abutting relation to each other when held in place by the dual
spring clips.
DESCRIPTION OF THE DRAWINGS
The features of the invention which are believed to be novel are
set forth with particularity in the appended claims. The invention,
together with the features, objects and advantages thereof will be
better understood from the following description in conjunction
with the accompanying drawings in which like reference numbers
identify like components, and in which:
FIG. 1 is a plan view of a preferred embodiment of a building
element for beach and play in accordance with the present
invention;
FIG. 2 is a side view of the FIG. 1 embodiment;
FIG. 3 is an enlarged scale view of cooperating fastener portions
of two FIG. 1 type building elements to more clearly show
construction and operation of the invention;
FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 3 to
more clearly show construction;
FIG. 5 is a cross sectional view taken on line 5--5 of FIG. 3 to
more clearly show construction;
FIG. 6 is a plan view of a second embodiment of a building element
in accordance with the present invention;
FIG. 7 is an enlarged scale view of cooperating fastener portions
of two FIG. 6 type building elements to more clearly show
construction and operation thereof;
FIG. 8 is a cross sectional view taken on line 8--8 of FIG. 7 to
more clearly show construction;
FIG. 9 is a cross sectional view taken on line 9--9 of FIG. 7 to
more clearly show construction;
FIG. 10 is a plan view illustrating a possible assembled
arrangement of four FIG. 1 type building elements;
FIG. 11 is a plan view illustrating a possible assembled
arrangement of four FIG. 6 type building elements;
FIG. 12 is a perspective view illustrating a windbreak and sun
shade constructed from only to building elements of the
invention;
FIG. 13 is a perspective view illustrating a larger windbreak and
sun shade constructed from four building elements of the
invention;
FIG. 14 is a perspective view of a large tepee constructed from
building elements of the invention;
FIG. 15 is a perspective view illustrating a windbreak or screen
constructed of building elements of the invention for protecting a
substantial area;
FIG. 16 is a perspective view illustrating a vertical walled tent
or cabana constructed of building elements of the invention;
FIG. 17 is a perspective view illustrating an imaginative play
structure from building elements of the invention;
FIG. 18 is a perspective view illustrating a form of windbreak or
sun shade constructed of building elements of the invention;
FIG. 19 is a perspective view illustrating windbreak with roof
overhang for shade and shelter constructed of building elements of
the invention;
FIG. 20 is a perspective view illustrating another tepee
configuration constructed from building elements of the
invention;
FIG. 21 is a perspective view illustrating further curved wall type
windbreak and screen constructed of building elements of the
invention.
DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
A building element for beach and play structures embodying the
present invention is designated generally by the numeral 22 in
FIGS. 1, 2 and 10. The building element 22 has a membrane 24
preferably of a plastic material such as polyethylene, but may also
be of other materials such as canvas or plywood. The membrane 24
under some use conditions may desirably have a plurality of
strengthening ribs 26. The membrane 24 has the shape of an
isosceles triangle, the three sides of which are fixed to and
circumscribed by a rod-like stiffener 28. The rod-like stiffener 28
is preferably made of two mirror image half-round cross sectional
members 28a and 28b (FIGS. 4 and 5). The half-round members 28a and
28b are preferably of molded polyethylene or other suitable
plastic, but may also be of wood or metal and are fixed to the
three sides of the triangular membrane 24 by conventional means
such as cementing or, in the case of thermoplastic materials as
polyethylene, by fusing at the contact surfaces with the membrane
24 by heat and pressure, or alternatively by staples, nails, screws
or rivets (not shown), to thereby form a rigid, unitary panel.
The rod-like stiffener 28 carries on each of the sides of the
triangular membrane 24 two spaced apart configurations 30 and 32
respectively for spring clip type fastening to corresponding
configurations on rod-like stiffeners of a like adjacent building
element as shown in FIG. 10. The fastening configuration 30 is in
the form of a cylindrical surface portion of the rod-like stiffener
28. The other fastening configuration 32 on each of the three sides
of the membrane 24 has a pair of laterally deflectable spring clip
legs 34 and 36 extending outwardly from the rod-like stiffener 28,
and shaped to be pushed onto and yieldably grasp a cylindrical
surface 38 (FIGS. 4 and 5) on a rod-like stiffener 40
circumscribing a membrane 42 of a building element 44 of like shape
and size as the building element 22. Thus, as shown in FIGS. 3 and
10, a plurality of building elements 22 may be rapidly fastened
together and thereafter rapidly dissassembled because of the spring
clip fastening configurations 30 and 32 on the rod-like stiffener
at each of the sides of the membrane 24.
To facilitate increased swing or angular positioning 46 between
adjacent building elements 22, such as shown in FIG. 4, an opening
48 is provided in the membrane 24 (FIG. 1) and an opening 50 in the
membrane 42 (FIGS. 3 and 4) to provide clearance for the respective
spring clip legs 34 and 36.
In operation, any desired number of beach and play building
elements 22 may be assembled by simply pushing each spring clip
type fastening member 32 onto the corresponding cylindrical surface
configuration 30 of another like building element 22 as shown in
FIG. 10 to thereby make possible an almost limitless number of
useful structures for various purposes. For example, FIG. 12
illustrates that as few as two building elements 22 may form a
useful windbreak for an individual under mild weather conditions.
FIG. 13 illustrates a larger shelter which may quickly be formed
from only four building elements 22. Or a variety of sizes and
types of tepees may be constructed as shown in FIGS. 14 and 20, or
an umbrella type tent structure as shown in FIG. 16. A larger area
encompassing windbreak and screen may be constructed in various
heights and forms as shown in FIGS. 15, 18 and 21 and even varied
to include an overhead shelter as shown in FIG. 19. An even more
sophisticated structure, limited only by the imagination of the
builder, may be rapidly constructed from building elements 22 as
evidenced by the structure in FIG. 17. The FIGS. 12 through 21
structures are presented herein as illustrative of the wide variety
of useful structures possible by the present invention and not
intended as limitations thereof.
It has been found that the size proportions of the building element
22 are most advantageous and convenient for building usable
windbreak and shelter structures as shown and described when the
equal angles 45 of the isosceles triangle are each between
65.degree. and 70.degree. and the height 47 is about two feet.
However, other proportions may be desirable for particular uses.
For example, for use in building miniature structures or models,
the height 47 may be much smaller and in the order of two
inches.
A second embodiment of the present invention is designated
generally by the numeral 52 in FIG. 6 wherein a triangular membrane
24, similar to that described above with respect to FIG. 1, has its
three sides fixed to and circumscribed by a rod-like stiffener 54.
The rod-like stiffener 54 on each of the sides of the membrane 24
has two offset cylindrical surface fastening configurations 56,
each for receiving one pair of laterally deflectable spring clip
legs 58 and 60 of a dual spring clip 62 which also has opposed
laterally deflectable spring clip legs 64 and 66 for fastening onto
an offset cylindrical surface configuration 68 of another building
element 70 of like size and shape as the building element 52. The
amount of offset 72 (FIG. 7) of the cylindrical surface fastening
configuration 56 is just sufficient to accomodate the dual spring
clip 62 so that the rod-like stiffeners 54 and 68 (FIG. 7) abut
each other to form an overall substantially continuous structural
surface.
There is an opening 74 at each of the offset cylindrical fastening
configurations 56 to provide clearance for the spring clip legs 58,
60 and 64, 66 respectively to thereby permit increased angular
positioning 76 between adjacent building elements 52 and 70.
The spring clip 62 may be of metal or suitable plastic. Extruded
aluminum or extruded nylon are examples of suitable materials for
the spring clip 62.
In operation, a plurality of building elements 52 may be rapidly
assembled with the use of dual spring clips 62 as shown in FIG. 11
and, if desired, thereafter rapidly dissassembled by simply pulling
them apart. Also, as explained in connection with the FIG. 1
embodiment, the alternative structure of FIGS. 6 and 11 lends
itself to the wide variety of useful structures illustrated in
FIGS. 12 through 21 and described above in connection with the FIG.
1 embodiment.
Where stronger than moderate winds are encountered, the bases of
windbreak structures such as those illustrated in FIGS. 12 through
21 may be thrust into the sand or fastened to the ground by other
conventional means to add stability to the structures.
This invention is not limited to the particular details of
construction and operation described as equivalents will suggest
themselves to those skilled in the art.
* * * * *