IE84057B1 - A staircase - Google Patents
A staircase Download PDFInfo
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- IE84057B1 IE84057B1 IE2004/0830A IE20040830A IE84057B1 IE 84057 B1 IE84057 B1 IE 84057B1 IE 2004/0830 A IE2004/0830 A IE 2004/0830A IE 20040830 A IE20040830 A IE 20040830A IE 84057 B1 IE84057 B1 IE 84057B1
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- Prior art keywords
- orifices
- staircase
- tread
- shaped section
- legs
- Prior art date
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- 210000002414 Leg Anatomy 0.000 claims description 35
- 230000000875 corresponding Effects 0.000 claims description 26
- 238000003780 insertion Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 210000003127 Knee Anatomy 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 2
- 210000003414 Extremities Anatomy 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
ABSTRACT A spiral staircase (100) comprising one or more balusters (5/6) each baluster (5/6) comprising two ends, the first end formed into a bifurcated end, the bifurcated end comprising one or more pairs of parallel legs (Sa/Sb/6a), the legs being joined by a V- or U—shaped section, one or more treads (3), each tread (3) comprising two ends, the first end having orifices (3d) which accommodate the bifurcations of the balusters (5/6) and a second end formed into a bifurcated end, the bifurcated end comprising one or more pairs of parallel legs (3e), the legs beingjoined by a V— or U—shaped action. A central pole (2a/2b) having orifices (2d) which accommodate the bifurcations (3e) of the treads (3). A handrail (8) comprising a U—shaped element (4) which is placed over the second end of the balusters (5/6). Optionally each balusters (5/6) is provided with a patterned decorative central portion. (Fig. 1)
Description
A STAIRCASE
The present invention relates to improvements in staircases and a method of manufacturing
thereof.
The basic components of a staircase are treads, stringers and a balustrade. Treads are the
horizontal portion of the steps of a staircase that a person walks on whilst stringers are the
sides of the stairs which are routed to accept the treads. The balustrade comprises newels,
balusters and a handrail. The newels are the larger vertical posts generally found at the
beginning and end of the staircase and occasionally found in between each end to provide
additional support to the balustrade. The balusters are the smaller more numerous vertical
posts that support the handrail between the newels.
There are four basic types of staircase, straight, flared, curved or spiral. A straight staircase
can be split with a landing to form either a U or L shaped staircase. in a flared staircase a
number of the first steps are flared to give the impression that the staircase is actually curved.
A curved staircase has steps that follow a constant radius or are of a circle and a spiral
staircase is where the treads are supported on a central pole. One method of forming a spiral
staircase uses a steel pipe as the central pole. The treads have a hole at one end that enable
each tread to be dropped over the pipe. In between each tread a short piece is dropped over
the centre pole thus separating each tread. When all of the treads are in position a threaded
pipe is then screwed onto the centre pole tightening everything in place.
More traditional staircases have a returned tread, this is where the side edge of the tread is
seen from the open side(s) of the staircase. In comparison most modern staircases have a
closed stringer, where the treads are not visible from the open side(s) of the staircase, a short
framed wall known as a ‘knee wall’ holds the balusters. The number of balusters required on
a returned tread staircase is significantly more than the number required for a closed stringer
staircase. Furthermore the treads on a traditional staircase generally have a mitered return to
give a finished side edge. Thus the cost of having a returned tread staircase is significantly
more than that of a closed stringer staircase.
GB 2,370,622 discloses a new wood joint comprising one element formed into a bifurcated
end and a second element having orifices which accommodate the bifurcations each
bifurcated end comprising a pair of parallel legs joined by a V- or U-shaped section, wherein
the generally V— or U-shaped section is not concealed in the assembled joint.
It is the object of the present invention to provide a plurality of elements, which when
combined form a staircase having strong jointing structure. The present invention also
provides a method for combining the elements together to form a staircase, which is robust
and is relatively easy to manufacture.
The present invention provides a spiral staircase, comprising
(a) a first element corresponding to a baluster comprising two ends, the first end
formed into a bifurcated end, the bifurcated end comprising one or more pairs of
parallel legs, the legs being joined by a V- or U-shaped section;
(b) a second element corresponding to a tread comprising two ends, the first end
having orifices which accommodate the bifurcations of the first element and a second
end formed into a bifurcated end, the bifurcated end comprising one or more pairs of
parallel legs, the legs being joined by a V- or U-shaped section, wherein the generally
V- or U-shaped section is not concealed in the assembled joint;
(c) a third element corresponding to a central pole having orifices which accommodate
the bifurcations of the second element, wherein the generally V- or U-shaped section
is not concealed in the assembledjoint; and
(d) a fourth element corresponding to a handrail comprising a U-shaped element
which is placed over the second end of the first element, the second end of the first
element inserting into the channel of the U-shaped element.
The present invention also provides a method of manufacturing a spiral staircase, comprising
the steps of;
(a) supporting a central pole;
(b) forming orifices on the central pole;
(c) inserting and securing one or more treads into the orifices of the central pole, each
tread comprising two ends, the first end having orifices which accommodate the
balusters of the invention and a second end formed into a bifurcated end which is
inserted into the orifices of the central pole, the bifurcated end comprising one or more
pairs of parallel legs, the legs being joined by a V- or U-shaped section, wherein the
generally V- or U-shaped section is not concealed in the assembled joint;
(d) inserting one or more balusters into the orifices on a tread, each baluster
comprising two ends, the first end formed into a bifurcated end for insertion into the
orifices on the tread, the bifurcated end comprising one or more pairs of parallel legs,
the legs being joined by a V- or U-shaped section wherein the generally V- or U-
shaped section is not concealed in the assembled joint; and
(e) placing a handrail comprising a U-shaped element over the second end of the
baluster, the second end of the baluster inserting into the channel of the U-shaped
element.
Preferably a base unit is provided for each spiral staircase which provides stability and
support for the central pole.
Optionally the central pole comprises a plurality of sections that are removably securable to
each other. In the preferred embodiment of the invention each central pole section is
cylindrical having a first and second end, the first end having a recess and the second end
having a projection whereby the projection is complimentary in shape to the recess. Thus
when the central pole is being assembled the projection on one central pole section inserts
into the recess of an adjacent central pole section. Conveniently it is not necessary for the
extremities of the central pole at the top and bottom of the staircase to have a projection or
recess. Optionally the end section of the central pole at the bottom of the stairs has a
projection or recess to insert into or be placed over the base unit.
Optionally the treads are provided with a tread support. Conveniently the tread support is
provided as a beam attached to the bottom of the tread, where the bottom of the tread is
defined as the underside of the tread which is not walked on. It is to be understood that the
tread support is not limited to this type of support and any suitable support known to a person
skilled in the art can be used. ideally the tread support is formed with a projection that
resembles one of the prongs of the bifurcated end of the tread. Conveniently the central pole
contains additional orifices to receive the projection of the tread support.
Optionally a guide piece is provided, having a series of spaced apart orifices at the top and
bottom of the guide piece, the orifices corresponding to the position of adjacent treads.
Conveniently the position of the orifices has been calculated to determine the space between
sequential treads on the staircases.
ideally in use the guide piece is placed at the bottom of the central pole and the position of
both sets of orifices are marked, the guide piece is then moved upwards, so that the bottom
orifices on the guide piece are positioned over the top marked orifices on the central pole, the
position of the next set of orifices are marked on the pole and so forth until all the markings
for the orifices to receive the treads are complete. Conveniently the guide piece can be
readily adapted to also provide guidance for the position of the orifice to receive the tread
support on the central pole.
Advantageously the bifurcated end of the balusters are provided with parallel legs of unequal
lengths to facilitate positioning the baluster between two adjacent treads. Thus the longer leg
of the baluster is positioned on the lower tread whilst the shorter leg of the baluster is
positioned on the upper tread. Optionally the bifurcated end of the baluster can also be
provided with parallel legs of equal length in order to position the baluster on one tread only.
Preferably an intermediate portion is provided between adjacent balusters to provide
additional support to the balustrade. Conveniently a plurality interstices are provided on the
abutting surfaces of the baluster and the intermediate portions. Ideally a connecting member
is positioned in the interstices of the baluster and during construction of the staircase is
inserted into the corresponding intermediate portion. Optionally the balusters can have a
patterned decorative central portion. Thus a spiral staircase is provided with open returned
treads.
The present invention further provides a staircase, comprising;
(a) a first element corresponding to treads and balusters formed into a bifurcated end,
each bifurcated end comprising one or more pairs of parallel legs, the legs being
joined by a V- or U-shaped section;
(b) a second element corresponding to the stringers comprising a cuboid having
orifices on one or more surfaces which accommodate the bifurcations of the first
element, wherein the generally V- or U-shaped section is not concealed in the
assembled joint; and
(c) a third element corresponding to the handrail having orifices which accommodate
the bifurcations of the first element, wherein the generally V- or U-shaped section is
not concealed in the assembled joint.
The present invention also provides a method of manufacturing a staircase, comprising the
steps of;
(a) forming orifices on a first and second stringer and also a handrail;
(b) inserting and securing one or more treads into orifices on a first surface of the first
stringer, each tread having two ends, each end formed into a bifurcated end which is
inserted into the orifices on the first and second stringers, the bifurcated end
comprising one or more pairs of parallel legs, the legs being joined by a V- or U-
shaped section, wherein the generally V- or U-shaped section is not concealed in the
assembled joint;
(c) inserting and securing the second end of each attached tread into corresponding
orifices on a first surface of the second stringer;
(cl) inserting and securing one or more balusters into orifices on a second surface on
each of the first and second stringers, each baluster comprising two ends, each end
formed into a bifurcated end, a first end for insertion into the orifices on the second
surface of each stringer, the bifurcated end comprising one ore more pairs of parallel
legs, the legs being joined by a V- or U-shaped section wherein the generally V- or U-
shaped section is not concealed in the assembled joint; and
(e) inserting the second bifurcated end of each baluster into orifices on the handrail
wherein the generally V- or U-shaped section is not concealed in the assembled joint.
ideally when the first element is being used as a tread the element is a substantially solid
element and the bifurcated ends are quite short. In contrast, when the first element is being
used as a baluster, the first element can optionally be quite decorative.
Preferably the stringer is provided as a ‘knee wall’.
Conveniently the handrail of the staircase is supported by newel posts at the lower and upper
ends of the staircase.
Optionally the balustrade can be extended at the lower and/or upper ends of the staircase to
form a balcony rail or a galley rail.
Advantageously, when two or more bifurcations are formed in a series thereis provided a
plurality of prongs for insertion into the corresponding orifices.
Preferably, the or each bifurcation is formed by a multi-spindle drill drilling holes into the end
of the first element, forming the prongs by means of a hole saw and drilling corresponding
orifices in the second element using the same multi-spindle drilling machine or one which is
set at the same centres as the multi-spindle drilling machine.
Advantageously, the orifices which accommodate the bifurcations of the elements of the
invention comprise a plurality of blind holes.
The invention will hereinafter be more particularly described with reference to the
accompanying drawings, which show by way of example only, five embodiments of a timber
staircase according to the invention. In the drawings: -
Figure 1 is a perspective view of a first embodiment of a staircase of the invention;
Figure 2 is a perspective view of a second embodiment of a staircase of the invention;
Figure 3 is a perspective view of a section of a third embodiment of a staircase of the
invention;
Figure 4 is a perspective view of a section of a fourth embodiment of a staircase of the
invention;
Figure 5a is a perspective view of an intermediate member of the staircase of the invention;
Figure 5b is a perspective view from the other side of the intermediate member of Figure 5a;
Figure 5c is a perspective view of a balustrade of the staircase of the invention;
Figure 5d is a perspective view of an interstitial connector of the staircase of the invention;
Figure 8a is a perspective view of a section of a handrail of the staircase of the invention;
Figure 6b is a perspective view from the other side of the section of handrail of Figure 6a;
Figure 7 is a perspective view of the bottom portion of a first baluster of the staircase of the
invention;
Figure 8 is a perspective view of the bottom portion of a second baluster of the staircase of
theinvenflon;
Figure 9 is a perspective view of a template attachable to the centre pole of the staircase of
theinvenfion;
Figure 10 is a perspective view of a portion of a centre pole together with an attached tread
and tread support and also the template of Figure 9;
Figure 11 is a perspective view of the underside of a tread and tread support attached to a
portion of the centre pole of the staircase of the invention; and
Figure 12 is a perspective view of a fifth embodiment of a staircase of the invention.
Referring to the drawings and initially to Figure 1 there is shown a first embodiment of a
staircase according to the invention. The staircase, indicated generally by reference numeral
100 comprises a base plate 1, a centre pole 2, a plurality of treads 3 and a balustrade 4, the
balustrade 4 comprising a plurality of first balusters 5, a plurality of second balusters 6, a
plurality of intermediate members 7 and a handrail 8.
A second embodiment 200 of the staircase is shown in Figure 2. Sections of a third and
fourth embodiment 300 and 400 of the staircase are shown in Figures 3 and 4 respectively.
The components of the spiral staircase in each embodiment are substantially the same thus
the same numerals have been used to indicate each as such.
The construction of the spiral staircase will now be described with reference to Figures 1 to
11. A base plate 1 is provided for support and stability of the spiral staircase 100. In this first
embodiment 100 the base plate 1 is provided as two sections of wood joined at right angles
to each other forming a cross. It is to be understood that the base plate 1 is not limited to this
type of base plate. The base plate supports the centre pole 2. The centre pole 2 is formed in
sections for example 2a, 2b. Each section being provided with a recess 2c, at one end and a
projection at the opposing end. The recess 2c, matches the shape of the projection, thereby
enabling the centre pole 2 be constructed by inserting the projection of each section into the
recess in the adjacent section. A guide piece 11, is used to indicate the position of the
orifices 2d, on the centre pole 2. The guide piece 11 is fitted over the centre pole 2 as shown
in Figure 10 and the positions of the opening 11d and 11e corresponding orifices 2d and 2e
are marked. The guide piece 11 can then be moved so that the openings 11d are positioned
over the orifices 2e and the next set of orifices (not shown) can be marked.
The treads 3 are inserted into the orifices created on the centre pole 2. The treads 3 are
provided with an additional tread support 3a or 3b Figure 3 and Figure 4 respectively. The
tread support 3a or 3b is a beam which is secured using conventional methods such as
screws 3c, Figure 11 to the underside of the tread 3. The tread 3, and balusters 5 and 6 each
have one end which is formed into a series of bifurcations or prongs 3e, 5a, 5b and 6a
respectively each of which is engagable into corresponding orifices 2d and 3d, Figure 11
formed on the centre pole 2 and tread 3 respectively. The bifurcations are formed by a multi-
spindle drill (not shown) drilling holes into the end of the tread 3 and balusters 5 and 6. The
prongs 3e, 5a, 5b and 6a respectively are then formed by using a hole saw which forms the
cylindrical shape of the prongs 3e, 5a, 5b and 6a respectively. The orifices 2d and 3d in the
centre pole 2 and tread 3 are formed by drilling using the same drilling machine, or one which
is set at the same centres are used to drill the holes on the tread 3 and balusters 5 and 6.
The prongs 3e of treads 3 insert into the orifices 2d of the centre pole 2. Likewise the prong
3f of the tread support inserts into an orifice (not shown) formed in the same manner as
described above on the centre pole 2. The prongs 5a, 5b and/or 6a of the balusters 5 and/or
6 insert into the corresponding orifices 3d on the treads 3. Additional support is provided for
the balustrade 4, by inserting intermediate portions 7 between the balusters 5 and/or 6. One
or more interstices 9 are provided on the sides of the balusters 5 and/or 6 and also on the
sides of the intermediate portion 7, the sides of both the intermediate portion 7 and the
balusters 5 and/or 6 being defined as the abutting surfaces.
A connecting member 9a is inserted into the interstice 9 on either the intermediate member 7
or the baluster 5 and/or 6. During construction of the staircase the connecting member 9a is
inserted and secured in the corresponding orifice 9 on either the baluster 5 and/or 6 or
intermediate member 7 as appropriate. Once the balusters 5 and/or 6 are in position the
handrail 8 is constructed. The handrail 8 is formed from U—shaped pieces 8a. The top of the
balusters 5 and/or 6 and intermediate portions 7 remote the bifurcated end insert into the
channel 8b of the U-shaped piece 8a.
Referring now to Figure 12, there is shown a straight staircase 500 comprising a plurality of
treads 30, stringers 70, newel posts 80a and 80b and balustrade 40. The balustrade 40
comprising balisters 60 and handrail 80. The bifurcations of the treads 30 and balisters 60
are formed as previously described, as are the orifices for receiving the bifurcations on the
stringers 70 and handrails 80.
Although it is not shown in Figure 12, the balisters 60 and handrail 80 of the balustrade 40
can be extended to form a balcony rail or galley rail.
it will of course be understood that the invention is not limited to the specific details described
herein, which are given by way of example only, and that various modifications and
alterations are possible within the scope of the invention as defined in the appended claims.
Claims (24)
1. A spiral staircase, comprising (a) a first element corresponding to a baluster comprising two ends, the first end formed into a bifurcated end, the bifurcated end comprising one or more pairs of parallel legs, the legs being joined by a V- or U-shaped section; (b) a second element corresponding to a tread comprising two ends, the first end having orifices which accommodate the bifurcations of the first element and a second end formed into a bifurcated end, the bifurcated end comprising one or more pairs of parallel legs, the legs being joined by a V- or U-shaped section, wherein the generally V- or U-shaped section is not concealed in the assembled joint; (c) a third element corresponding to a central pole having orifices which accommodate the bifurcations of the second element, wherein the generally V- or U-shaped section is not concealed in the assembled joint; and (d) a fourth element corresponding to a handrail comprising a U-shaped element which is placed over the second end of the first element, the second end of the first element inserting into the channel of the U-shaped element.
2. A spiral staircase as claimed in Claim 1, wherein the spiral staircase further includes a base unit providing stability and support for the central pole.
3. A spiral staircase as claimed in Claim 1 or Claim 2, wherein the central pole comprises a plurality of sections that are removably securable to each other.
4. A spiral staircase as claimed in Claim 3, wherein each central pole section has a first and second end, the first end having a recess and the second end having a projection whereby the projection is complimentary in shape to the recess.
5. A spiral staircase as claimed in any one of the preceding claims, wherein the treads are provided with a tread support. 11
6. A spiral staircase as claimed in Claim 5, wherein the tread support is provided as a beam attached to the bottom of the tread, wherein the bottom of the tread is defined as the underside of the tread which is not walked on.
7. A spiral staircase as claimed in Claim 6, wherein the tread support is formed with a projection for insertion into an orifice on the central pole.
8. A spiral staircase as claimed in Claim 7, wherein the central pole contains orifices to receive the projection of the tread support.
9. A spiral staircase as claimed in any one of the preceding claims, wherein the bifurcated ends of the balusters are provided with parallel legs of unequal lengths.
10. A spiral staircase as claimed in any one of Claim 1 to Claim 8, wherein the bifurcated ends of the balusters are provided with parallel legs of equal length.
11. A spiral staircase as claimed in any one of the preceding claims, wherein an intermediate portion is provided between adjacent balusters to provide additional support to the balustrade.
12. A spiral staircase as claimed in Claim 11, wherein one or more interstices are provided on the abutting surfaces of the baluster and the intermediate portions.
13. A spiral staircase as claimed in Claim 12, wherein a connecting member is positioned in the interstices of the baluster and corresponding intermediate portion.
14. A spiral staircase as claimed in any one of the preceding claims, wherein the balusters have a patterned decorative central portion.
15. A method of manufacturing a spiral staircase, comprising the steps of; (a) supporting a central pole; (b) forming orifices on the central pole; 12 (c) inserting and securing one or more treads into the orifices on the central pole; each tread comprising two ends, the first end having orifices which accommodate the balusters of the invention and the second end formed into a bifurcated end which is inserted into the orifices of the central pole, the bifurcated end comprising one or more pairs of parallel legs, the legs being joined by a V- or U-shaped section, wherein the generally V— or U-shaped section is not concealed in the assembled joint; (d) inserting one or more balusters into the orifices on a tread, each baluster comprising two ends, the first end formed into a bifurcated end for insertion into the orifices on the tread, the bifurcated end comprising one or more pairs of parallel legs, the legs being joined by a V- or U-shaped section wherein the generally V- or U- shaped section is not concealed in the assembled joint; and (e) placing a handrail comprising a U-shaped element over the second end of the baluster, the second end of the baluster inserting into the channel of the U-shaped element.
16. A staircase, comprising; (a) a first element corresponding to treads and balusters formed into a bifurcated end, each bifurcated end comprising one or more pairs of parallel legs, the legs being joined by a V- or U-shaped section; (b) a second element corresponding to the stringers comprising a cuboid having orifices on one or more surfaces which accommodate the bifurcations of the first element, wherein the generally V- or U-shaped section is not concealed in the assembled joint; and (c) a third element corresponding to the handrail having orifices which accommodate the bifurcations of the first element, wherein the generally V- or U-shaped section is not concealed in the assembled joint.
17. A staircase as claimed in Claim 16, wherein the stringer is provided as a knee wall.
18. A staircase as claimed in Claim 16 or Claim 17, wherein the handrail of the staircase is supported by newel posts at the lower and upper ends of the staircase. 13
19. A staircase as claimed in any one of Claim 16 to Claim 18, wherein two or more bifurcations are formed in a series thereby providing a plurality of prongs for insertion into the corresponding orifices.
20. A method of manufacturing a staircase, comprising the steps of; (a) forming orifices on a first and second stringer and also a handrail; (b) inserting and securing one or more treads into orifices on a first surface of the first stringer, each tread having two ends, each end formed into a bifurcated end which is inserted into the orifices on the first and second stringers, the bifurcated end comprising one or more pairs of parallel legs. the legs being joined by a V- or U- shaped section, wherein the generally V- or U-shaped section is not concealed in the assembled joint; (c) inserting and securing the second end of each attached tread into corresponding orifices on a first surface of the second stringer; (d) inserting and securing one or more balusters into orifices on a second surface on each of the first and second stringers, each baluster comprising two ends, each end formed into a bifurcated end, a first end for insertion into the orifices on the second surface of each stringer, the bifurcated end comprising one ore more pairs of parallel legs, the legs being joined by a V- or U-shaped section wherein the generally V- or U- shaped section is not concealed in the assembled joint; and (e) inserting the second bifurcated end of each baluster into orifices on the handrail wherein the generally V- or U-shaped section is not concealed in the assembled joint.
21. A spiral staircase as claimed in Claim 1 to Claim 14, substantially in accordance with any of the embodiments herein described with reference to and as shown in the accompanying drawings.
22. A method for making a spiral staircase as claimed in Claim 15, substantially as herein described with reference to and as shown in the accompanying drawing.
23. A staircase as claimed in Claim 16 to 19, substantially in accordance with any of the embodiments herein described with reference to and as shown in the accompanying drawing.
24. A method for making a staircase as claimed in Claim 20, substantially as herein described with reference to and as shown in the accompanying drawing. MACLACHLAN & DONALDSON, Appiicant’s Agents, 47 Merrion Square,
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE20040830A IE20040830A1 (en) | 2004-12-10 | 2004-12-10 | A staircase |
PCT/IE2005/000143 WO2006061813A1 (en) | 2004-12-10 | 2005-12-12 | A staircase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE20040830A IE20040830A1 (en) | 2004-12-10 | 2004-12-10 | A staircase |
Publications (2)
Publication Number | Publication Date |
---|---|
IE84057B1 true IE84057B1 (en) | 2005-11-16 |
IE20040830A1 IE20040830A1 (en) | 2005-11-16 |
Family
ID=35501275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE20040830A IE20040830A1 (en) | 2004-12-10 | 2004-12-10 | A staircase |
Country Status (2)
Country | Link |
---|---|
IE (1) | IE20040830A1 (en) |
WO (1) | WO2006061813A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110271481A1 (en) * | 2010-05-10 | 2011-11-10 | Yuxu Ma | Baluster Insert |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2974830A1 (en) * | 2011-05-05 | 2012-11-09 | Martial Charles Eve | Wooden staircase for use in e.g. renovated farmhouse, has central beam, stanchions, and steps assembled by recesses, pins and wedges, where central beam is inclined so as to connect two different floors |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3513547A (en) * | 1968-10-04 | 1970-05-26 | Abraham Suckno | Circular staircase |
FR2378151A1 (en) * | 1977-01-25 | 1978-08-18 | Lafon Daniel | Traditional design prefabricated wooden staircase - has stringer with interlocking top and bottom members and tongue and groove banister joint |
US4722374A (en) * | 1985-11-06 | 1988-02-02 | Bond Henry J | Method for fabricating wooden circular stair with balustrade |
DE29604522U1 (en) * | 1996-03-06 | 1996-06-13 | Trautwein Holzverarbeitungswer | Wooden staircase |
IES20001078A2 (en) * | 2000-12-22 | 2002-01-09 | Brian Quill | A wood joint |
-
2004
- 2004-12-10 IE IE20040830A patent/IE20040830A1/en not_active IP Right Cessation
-
2005
- 2005-12-12 WO PCT/IE2005/000143 patent/WO2006061813A1/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110271481A1 (en) * | 2010-05-10 | 2011-11-10 | Yuxu Ma | Baluster Insert |
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