AU3130600A - A metal picket fence - Google Patents
A metal picket fence Download PDFInfo
- Publication number
- AU3130600A AU3130600A AU31306/00A AU3130600A AU3130600A AU 3130600 A AU3130600 A AU 3130600A AU 31306/00 A AU31306/00 A AU 31306/00A AU 3130600 A AU3130600 A AU 3130600A AU 3130600 A AU3130600 A AU 3130600A
- Authority
- AU
- Australia
- Prior art keywords
- picket
- hollow metal
- opposing
- edge portions
- rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Description
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT a a a Applicant(s): BHP STEEL (JLA) PTY LTD A.C.N. 000 011 058 Invention Title: A METAL PICKET FENCE The following statement is a full description of this invention, including the best method of performing it known to me/us: 2 A METAL PICKET FENCE FIELD OF THE INVENTION The present invention relates generally to a picket fence and relates particularly, though not exclusively, to a hollow metal picket and rail and their methods of fabrication.
SUMMARY OF THE INVENTION According to one aspect of the present invention there is provided a hollow metal picket for a picket fence, said :picket being roll formed from steel strip into a closed section wherein opposing edge portions of the steel strip overlap one another at a corner of the picket.
According to another aspect of the invention there is provided a method of fabricating a hollow metal picket for a picket fence, said method comprising roll forming steel strip into a closed section wherein opposing edge portions 20 of the steel strip overlap one another at a corner of the picket.
According to a further aspect of the invention there is provided a hollow metal picket for a picket fence, said 25 picket being roll formed from steel strip into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile.
According to yet another aspect of the invention there is provided a method of fabricating a hollow metal picket for a picket fence, said method comprising roll forming steel strip into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat J:\Speci\300 399\350 399\37818.doc 3/05/00 3 within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile.
According to yet a further aspect of the invention there is provided a hollow metal picket for a picket fence, said picket being roll formed from steel strip into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile, the opposing edge portions also being overlapped at a corner of the hollow ***metal picket.
c .15 According to still another aspect of the invention there is provided a method of fabricating a hollow metal picket for a picket fence, said method comprising roll forming steel strip into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion 20 so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile, the [.opposing edge portions also being overlapped at a corner of the hollow metal picket.
According to still a further aspect of the invention there is provided a picket fence comprising: a plurality of upright posts; an upper rail and a lower rail located horizontally between adjacent of said posts; and a series of hollow metal pickets each roll formed into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile, the opposing edge portions also being overlapped at a corner of the J:\Speci\3 399\350 399\37818.doc 3/05/00 4 hollow metal picket, said pickets extending vertically alongside one another between the upper and the lower rails.
According to an additional aspect of the invention there is provided a hollow metal rail for a picket fence, said rail being roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot having a series of longitudinally spaced apart enlarged oblong-shaped openings *each being adapted to receive an end of a picket.
ooo 15 According to yet an additional aspect of the invention there is provided a method of fabricating a hollow metal rail for a picket fence, said method comprising roll forming steel strip so as to form a channel section ~including a web, and a pair of opposing flanges extending 20 from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot having a *series of longitudinally spaced apart enlarged oblongshaped openings each being adapted to receive an end of a 25 picket.
According to still an additional aspect of the invention there is provided a hollow metal rail for a picket fence, said rail being roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot being adapted to receive an end of a picket, opposing edge portions of opposing flanges of the rail including a lip portion which is turned inwardly of the rail.
J:\Speci\300 399\350 399\37818.doc 3/05/00 5 According to a supplementary aspect of the invention there is provided a method of fabricating a hollow metal rail for a picket fence, said method comprising roll forming steel strip so as to form a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot being adapted to receive an end of a picket, opposing edge portions of opposing flanges of the rail including a lip portion which is turned inwardly of the rail.
According to another supplementary aspect of the invention oo there is provided a picket fence comprising: 15 a plurality of upright posts; an upper rail and a lower rail located horizontally between adjacent of said posts; and a series of hollow metal pickets extending vertically alongside one another between the upper and the lower rails 20 which are each roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot having a series of 25 longitudinally spaced apart enlarged openings each being adapted to receive an end of a picket.
According to a further supplementary aspect of the invention there is provided a picket fence comprising: a plnrality of upright posts; an upper rail and a lower rail located horizontally between adjacent of said posts; and a series of hollow metal pickets extending vertically alongside one another between the upper and the lower rails which are each roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of J:\Speci\300 399\350 399\37818.doc 3/05/00 6 the flanges being directed toward one another so as to define a longitudinally extending slot being adapted to receive an end of a picket, opposing edge portions of opposing flanges of the rail including a lip portion which is turned inwardly of the rail.
Preferably the hollow metal picket or the rail is cold roll formed from relatively thin gauge steel strip. More preferably the steel strip is less than about 1.0 mm in gauge.
Preferably the hollow metal picket is shaped oblong in cross-section.
15 Preferably the web of the hollow metal rail includes a central panel formed continuous with a pair of opposing side panels extending at an acute angle relative to a nominal plane of the central panel.
r 20 BRIEF DESCRIPTION OF THE DRAWINGS In order to achieve a better understanding of the nature of the present invention a preferred embodiment of a picket .fence together with a hollow metal picket and rail will now be described, by way of example only, with reference to the 25 accompanying drawings in which: Figure 1 is a perspective view of a metal picket fence; Figure 2 is a perspective view of another metal picket fence; Figure 3 shows various views of a picket taken from the picket fences of Figures 1 and 2; and Figure 4 depicts various views of a top and bottom rail taken from the picket fence of Figure I.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENTS
As shown in Figures 1 and 2 there is a metal picket fence comprising a pair of upright posts 12A and 12B, an upper J;\Speci\3O 399\350 399\37818.doc 3/05/00 7 and a lower rail 14 and 16, and a series of hollow metal pickets such as 18. The upper and lower rails 14 and 16 are located horizontally between the upright posts 12A and 12B which are spaced a predetermined distance apart. The hollow metal pickets such as 18 extend vertically alongside one another between the upper and the lower rails 14 and 16. In both embodiments of the picket fence 10 the pickets 18 rest upon the lower rail 16. In the picket fence 10 of Figure 1 the pickets 18 extend through the top rail 14 whereas in the picket fence 10 of Figure 2 the pickets 18 abut the upper rail 14.
Figure 3 illustrates in plan and elevational view together with an enlarged detail view one of the pickets such as 18 of the picket fence 10 of Figures 1 or 2. In this embodiment the picket 18 is cold roll formed from relatively light gauge steel strip such as that commercially available in Australia under the specification of 0.35 G550 AZ150 COLORBOND® CORSTRIP®. The picket 18 is 20 shaped oblong in cross-section with opposing longitudinal edge portions designated as 20A and 20B of the steel strip overlapping one another. The picket 18 is roll formed so o* that the edge portions 20A and 20B overlap one another at a corner such as 22 of the picket 18. The overlapping edge 25 portions 20A and 20B thus mutually overlap to provide a hollow metal picket 18 which is relatively stable dimensionally. Further, one of the edge portions 20A is cranked so that the opposite overlapping edge portion seats within the cranked portion so as to provide a picket with a relatively smooth external profile.
The hollow metal picket 18 has the appearance of a seamless construction in that the seam is not visually evident.
Additionally the picket 18 is then constructed without requiring any fixing means such as a weld or fastener to retain its cross sectional profile. Rather, the hollow metal picket 18 of this embodiment relies upon the J1\Speci\300 399\350 399\37818.doc 3/05/00 8 overlapping or interlocking of opposing edge portions of the steel strip from which it is fabricated to maintain its sectional profile.
Figure 4 illustrates plan and sectional views of the top and bottom rail 14 and 16 of the picket fences 10 of Figures 1 and 2 together with an exploded view of two of the pickets 18 in conjunction with the top and bottom rails 14 and 16. In this embodiment the top and bottom rails 14 and 16 are each cold roll formed from a relatively light gauge steel strip such as that commercially available in Australia as 0.80 B.M.T® G550 Z275 COLORBOND® or 0.80 G550 Z450 ZINC HI-TEN®. The top and bottom rails 14 and 16 are in the form of a channel section of 15 substantially identical cross-sectional shape. Each of the channel sections of the top and bottom rails 14 and 16 include a web 24 and a pair of opposing flanges 26A and 26B extending from opposing longitudinal edges of the web 24.
The web 24 consists of a central panel 28 formed continuous e r 20 with a pair of opposing side panels 30A and 30B which extend at an acute angle relative to a nominal plane of the central panel 28. The pair of opposing flanges 26A and 26B include opposing edge portions 32A and 32B which are directed toward one another with a longitudinally extending 25 slot 34 defined therebetween. The opposing edge portions 32A and 32B also include a lip return 35 turned inwardly of the rail 14 or 16. The top and bottom rails 14 and 16 of this example are thus generally hexagonal in crosssectional shape.
The slot 34 of both the upper and lower rails 14 and 16 incorporates a series of longitudinally orientated and spaced apart oblong-shaped openings such as 36. Each of the openings 36 is adapted to receive an end of a picket such as 18. The oblong-shaped openings 36 of this example are thus shaped complementary to the cross-sectional shape of the picket 18. Accordingly a lower end of one of the J:\Speci\300 399\350 399\37818.doc 3/05/00 9 pickets 18 is slid through the opening 36 until it abuts the central panel 28 of the lower rail 16. In one embodiment the lip return such as 35 defines part of the perimeter of the picket opening 36. The opening is slightly narrower than the picket 18 and the lip return both assists with insertion of the picket 18 into the rail such as 16 and clamps the picket 18 to hold it in place.
The upper rail 14 of the picket fence of Figure 1 includes a corresponding oblong-shaped opening 38 through which an upper end of the picket 18 is slidably received. In this example the pickets 18 of the picket fence 10 may be provided with an end cap (not shown) in the form of "Fleur de Lyse" or other desired shapes. Generally these end caps 15 extend into the upper end of the hollow picket 18. On the other hand, the upper rail 14 of the picket fence of Figure 2 is identical in construction to the lower rail 16 insofar as there is no corresponding opening in the web 28 of the upper rail 14 through which the picket 18 can pass.
20 Rather, the upper end of the picket 18 abuts an inner surface of the web 24.
"The picket fences 10 of Figures 1 and 2 of these embodiments of the invention can be erected without the 25 need for fasteners or other fixing means. Accordingly the picket fence 10 is relatively quick and simple to erect requiring minimal trade skills. The pickets such as 18 are also visually attractive and dimensionally stable as a result of the particular configuration of the overlapping edge portions. The bottom rail 16 may be provided with drain outlets 40 to facilitate the drainage or egress of rainwater. Inthe illuminated example the drain outlets are positioned respectively at or near ends of the rail 16.
Those skilled in the art will appreciate that the invention described herein is susceptible to variations and modifications other than those specifically described. All J:\Speci\300 399\350 399\37818.doc 3/05/00 10 such variations and modifications are to be considered within the scope of the present invention the nature of which is to be determined from the foregoing description.
In the preceding summary of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprising" is used in the sense of "including", that is the features specified may be associated with further features in various embodiments of the invention.
a a a* *a a J:\Speci\300 399\350 399\37818.doc 3/05/00
Claims (19)
1. A hollow metal picket for a picket fence, said picket being roll formed from steel strip into a closed section wherein opposing edge portions of the steel strip overlap one another at a corner of the picket.
2. A hollow metal picket for a picket fence, said picket being roll formed from steel strip into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a oeel relatively smooth external profile.
3. A hollow metal picket for a picket fence, said picket being roll formed from steel strip into a closed section wherein one of opposing edge portions of said strip is ~formed as a cranked edge portion so that the other of said 20 opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile, the opposing edge portions also being overlapped at a corner of the hollow metal picket.
4. A hollow metal picket as defined in any one of the preceding claims wherein the hollow metal picket is cold roll formed from relatively thin gauge steel strip.
5. A picket fence comprising: a plurality of upright posts; an upper rail and a lower rail located horizontally between adjacent of said posts; and a series of hollow metal pickets each roll formed into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within J:\Speci\300 399\350 399\37818.doc 3/05/00 12 the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile, the opposing edge portions also being overlapped at a corner of the hollow metal picket, said pickets extending vertically alongside one another between the upper and the lower rails.
6. A method of fabricating a hollow metal picket for a picket fence, said method comprising roll forming steel strip into a closed section wherein opposing edge portions of the steel strip overlap one another at a corner of the picket. V V cog•
7. A method of fabricating a hollow metal picket for a 15 picket fence, said method comprising roll forming steel !....strip into a closed section wherein one of opposing edge portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal S 20 picket with a relatively smooth external profile.
8. A method of fabricating a hollow metal picket for a picket fence, said method comprising roll forming steel strip into a closed section wherein one of opposing edge 25 portions of said strip is formed as a cranked edge portion so that the other of said opposing edge portions can seat within the cranked edge portion to provide the hollow metal picket with a relatively smooth external profile, the opposing edge portions also being overlapped at a corner of the hollow metal picket.
9. A hollow metal rail for a picket fence, said rail being roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot having a series of J:\Speci\300 399\350 399\37818.doc 3/05/00 13 longitudinally spaced apart enlarged openings each being adapted to receive an end of a picket.
A hollow metal rail for a picket fence, said rail being roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot being adapted to receive an end of a picket, opposing edge portions of opposing flanges of the rail including a lip portion which is turned inwardly of the rail. oo
11. A hollow metal rail as defined in claim 9 or 15 wherein the web of the hollow metal rail includes a central oo oo panel formed continuous with a pair of opposing side panels S" extending at an acute angle relative to a nominal plane of the central panel. e 20
12. A method of fabricating a hollow metal rail for a picket fence, said method comprising roll forming steel strip so as to form a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot having a series of longitudinally spaced apart enlarged oblong-shaped openings each being adapted to receive an end of a picket.
13. A method of fabricating a hollow metal rail for a picket fence, said method comprising roll forming steel strip so as to form a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot being adapted to receive an end of a picket, opposing edge portions of J:\Speci\300 399\350 399\37818.doc 3/05/00 14 opposing flanges of the rail including a lip portion which is turned inwardly of the rail.
14. A picket fence comprising: a plurality of upright posts; an upper rail and a lower rail located horizontally between adjacent of said posts; and a series of hollow metal pickets extending vertically alongside one another between the upper and the lower rails which are each roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot having a series of 15 longitudinally spaced apart enlarged openings each being adapted to receive an end of a picket.
A picket fence comprising: a plurality of upright posts; 20 an upper rail and a lower rail located horizontally between adjacent of said posts; and :a series of hollow metal pickets extending vertically 000 alongside one another between the upper and the lower rails which are each roll formed as a channel section including a web, and a pair of opposing flanges extending from opposing longitudinal edges of the web, opposing edge portions of the flanges being directed toward one another so as to define a longitudinally extending slot being adapted to receive an end of a picket, opposing edge portions of opposing flanges of the rail including a lip portion which is turned inwardly of the rail.
16. A hollow metal picket substantially as herein described with reference to the accompanying drawings.
17. A hollow metal rail substantially as herein described with reference to the accompanying drawings. J:\Speci\300 399\350 399\37818.doc 3/05/00 15
18. A picket fence substantially as herein described with reference to the accompanying drawings.
19. A method of fabricating a hollow metal picket, said method being substantially as herein described. A method of fabricating a hollow metal rail, said method being substantially as herein described. Dated this 3 rd day of May 2000 0000 S BHP STEEL (JLA) PTY LTD By their Patent Attorneys GRIFFITH HACK 0 S J:\Speci\300 399\350 399\37818.doc 3/05/00
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU31306/00A AU3130600A (en) | 1999-05-03 | 2000-05-03 | A metal picket fence |
| AU2004242437A AU2004242437A1 (en) | 1999-05-03 | 2004-12-22 | A metal picket fence |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPQ0093A AUPQ009399A0 (en) | 1999-05-03 | 1999-05-03 | A metal picket fence |
| AUPQ0093 | 1999-05-03 | ||
| AU31306/00A AU3130600A (en) | 1999-05-03 | 2000-05-03 | A metal picket fence |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2004242437A Division AU2004242437A1 (en) | 1999-05-03 | 2004-12-22 | A metal picket fence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU3130600A true AU3130600A (en) | 2000-11-09 |
Family
ID=25621710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU31306/00A Abandoned AU3130600A (en) | 1999-05-03 | 2000-05-03 | A metal picket fence |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU3130600A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005049943A1 (en) * | 2003-11-24 | 2005-06-02 | Gram Engineering Pty Ltd | Fence plinth |
| WO2005059279A1 (en) * | 2003-12-18 | 2005-06-30 | Panel Crimp Pty Ltd | Fence construction systems |
| AU2004291566B2 (en) * | 2003-11-24 | 2009-06-18 | Gram Engineering Pty Ltd | Fence plinth |
| CN105155919A (en) * | 2015-09-30 | 2015-12-16 | 郑文丽 | Ascending and descending fence |
| CN105155923A (en) * | 2015-09-30 | 2015-12-16 | 郑文丽 | Height-adjustable fence |
-
2000
- 2000-05-03 AU AU31306/00A patent/AU3130600A/en not_active Abandoned
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005049943A1 (en) * | 2003-11-24 | 2005-06-02 | Gram Engineering Pty Ltd | Fence plinth |
| GB2423535A (en) * | 2003-11-24 | 2006-08-30 | Gram Engineering Pty Ltd | Fence plinth |
| GB2423535B (en) * | 2003-11-24 | 2008-02-27 | Gram Engineering Pty Ltd | Fence plinth |
| AU2004291566B2 (en) * | 2003-11-24 | 2009-06-18 | Gram Engineering Pty Ltd | Fence plinth |
| WO2005059279A1 (en) * | 2003-12-18 | 2005-06-30 | Panel Crimp Pty Ltd | Fence construction systems |
| US7503551B2 (en) | 2003-12-18 | 2009-03-17 | Crimp Tech Industries | Fence construction systems |
| CN105155919A (en) * | 2015-09-30 | 2015-12-16 | 郑文丽 | Ascending and descending fence |
| CN105155923A (en) * | 2015-09-30 | 2015-12-16 | 郑文丽 | Height-adjustable fence |
| CN105155919B (en) * | 2015-09-30 | 2018-08-03 | 浙江联畅科技有限公司 | Lift fence |
| CN105155923B (en) * | 2015-09-30 | 2018-08-14 | 浙江联畅科技有限公司 | height-adjustable fence |
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