GB2190934A - Adjustable length plank - Google Patents

Adjustable length plank Download PDF

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Publication number
GB2190934A
GB2190934A GB8612505A GB8612505A GB2190934A GB 2190934 A GB2190934 A GB 2190934A GB 8612505 A GB8612505 A GB 8612505A GB 8612505 A GB8612505 A GB 8612505A GB 2190934 A GB2190934 A GB 2190934A
Authority
GB
United Kingdom
Prior art keywords
members
longitudinally extending
adjustable length
assembly
plank
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.)
Granted
Application number
GB8612505A
Other versions
GB8612505D0 (en
GB2190934B (en
Inventor
William Alexander Erwin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8612505A priority Critical patent/GB2190934B/en
Publication of GB8612505D0 publication Critical patent/GB8612505D0/en
Publication of GB2190934A publication Critical patent/GB2190934A/en
Application granted granted Critical
Publication of GB2190934B publication Critical patent/GB2190934B/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/152—Platforms made of metal or with metal-supporting frame
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G2001/157—Extensible platforms, e.g. telescopic platforms

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fencing (AREA)

Abstract

An adjustable length plank comprising a longitudinally extending pair of outer channel members 10 spaced apart by a plurality of upper and lower transverse members 11, located therealong to provide an outer assembly. A further pair of longitudinally extending inner channel members 13 are spaced apart by a plurality of further upper and lower members 14 located therealong to provide an inner assembly. Each of the inner and outer assemblies have a sheet-form member 12 & 15 located at least thereover and the inner assembly is slidably mounted within the outer assembly. Preferably the inner and outer longitudinally extending members may be metallic e.g. aluminium, and preferably each of the sheet-form members comprise chequer aluminium plate extending over and around the side edges of the inner and outer longitudinally extending members. <IMAGE>

Description

SPECIFICATION Adjustable length plank The invention relates to an adjustable length plank.
Adjustable length planks are known, for example as shown in United States patent specification No. 3,889,779 in which an inner member can be withdrawn from within an outer member and locked in a position extending therefrom. However, such plank assembly includes complicated locking and can be used only in the retracted or fully extended positions. Such planks have not been used extensively due to their high cost outwaying any advantages of flexibility of use, which has heretofore been limited.
It is an object of the present invention to obviate or mitigate such disadvantages.
According to the invention there is provided an adjustable length plank comprising a longitudinally extending pair of outer channel members spaced apart by a plurality of upper and lower transverse members located therealong to provide an outer assembly a further pair of longitudinally extending inner channel members spaced apart by a plurality of further upper and lower members located therealong to provide an inner assembly, each of the inner and outer assemblies having a sheet-form member located at least thereover and the inner assembly being slidably mounted within the outer assembly.
Preferably the inner and outer longitudinally extending members are metallic e.g. aluminium and preferably each of the sheet-form members comprise chequer aluminium plate extending over and around the side edges of the inner and outer longitudinally extending members.
In a preferred embodiment the outer longitudinally extending members are U-section and the inner longitudinally extending members are 1-section locating therein.
The foregoing and further features of the invention may be more readily understood from the foliowing description of two preferred embodiments thereof, by way of example, with reference to the accompanying drawing, in which: Figure 1 is a cross-sectional view of an adjustable length plank of a first embodiment, and Figure 2 is a cross-sectional view of a modified embodiment of Fig. 1.
Referring now firstly to Fig. 1 of the drawing there is shown an adjustable length plank having an outer assembly comprising a pair of opposed longitudinally extending channel members 10 spaced apart by upper and lower transverse members 11 spaced therealong.
These members are all preferably formed of aluminium and a sheet 12 of chequer aluminium plate is located thereover. An inner assembly slidably located within the outer assembly comprises a pair of opposed longitudinally extending channel members 13 spaced apart by upper and lower transverse members 14 spaced therealong. A sheet 15 of chequer aluminium plate is located thereover.
The embodiment of Fig. 2 is similar to that of Fig. 1 except that the inner channel section member 13' are of "l"-section rather than "U"-section as in Fig. 1 which eases fixing of sheet 15 thereto.
With the embodiments shown the plank can be used in the retracted position or at an infinite number of extension positions up to the fully extended position at which a simple stop is provided. The plank members could alternatively be formed of a synthetic plastics or other light weight material.
1. An adjustable length plank comprising a longitudinally extending pair of outer channel members spaced apart by a plurality of upper and lower transverse members located therealong to provide an outer assembly, a further pair of longitudinally extending inner channel members spaced apart by a plurality of further upper and lower members located therealong to provide an inner assembly, each of the inner and outer assemblies having a sheet-form member located at least thereover and the inner assembly being slidably mounted within the outer assembly.
2. An adjustable length plank as Claimed in Claim 1 wherein the inner and outer longitudinally extending members are metallic.
3. An adjustable length plank as claimed in Claim 1 or 2 wherein the sheet-form members comprise chequer aluminium plate extending over and around side edges of the inner and outer longitudinally extending members.
4. An adjustable length plank as claimed in any preceding Claim wherein the outer longitudinally members are U-section and the inner longitudinally members are I-section locating therein.
5. An adjustable length plank substantially as hereinbefore described with reference to Figs. 1 and 2 of the drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Adjustable length plank The invention relates to an adjustable length plank. Adjustable length planks are known, for example as shown in United States patent specification No. 3,889,779 in which an inner member can be withdrawn from within an outer member and locked in a position extending therefrom. However, such plank assembly includes complicated locking and can be used only in the retracted or fully extended positions. Such planks have not been used extensively due to their high cost outwaying any advantages of flexibility of use, which has heretofore been limited. It is an object of the present invention to obviate or mitigate such disadvantages. According to the invention there is provided an adjustable length plank comprising a longitudinally extending pair of outer channel members spaced apart by a plurality of upper and lower transverse members located therealong to provide an outer assembly a further pair of longitudinally extending inner channel members spaced apart by a plurality of further upper and lower members located therealong to provide an inner assembly, each of the inner and outer assemblies having a sheet-form member located at least thereover and the inner assembly being slidably mounted within the outer assembly. Preferably the inner and outer longitudinally extending members are metallic e.g. aluminium and preferably each of the sheet-form members comprise chequer aluminium plate extending over and around the side edges of the inner and outer longitudinally extending members. In a preferred embodiment the outer longitudinally extending members are U-section and the inner longitudinally extending members are 1-section locating therein. The foregoing and further features of the invention may be more readily understood from the foliowing description of two preferred embodiments thereof, by way of example, with reference to the accompanying drawing, in which: Figure 1 is a cross-sectional view of an adjustable length plank of a first embodiment, and Figure 2 is a cross-sectional view of a modified embodiment of Fig. 1. Referring now firstly to Fig. 1 of the drawing there is shown an adjustable length plank having an outer assembly comprising a pair of opposed longitudinally extending channel members 10 spaced apart by upper and lower transverse members 11 spaced therealong. These members are all preferably formed of aluminium and a sheet 12 of chequer aluminium plate is located thereover. An inner assembly slidably located within the outer assembly comprises a pair of opposed longitudinally extending channel members 13 spaced apart by upper and lower transverse members 14 spaced therealong. A sheet 15 of chequer aluminium plate is located thereover. The embodiment of Fig. 2 is similar to that of Fig. 1 except that the inner channel section member 13' are of "l"-section rather than "U"-section as in Fig. 1 which eases fixing of sheet 15 thereto. With the embodiments shown the plank can be used in the retracted position or at an infinite number of extension positions up to the fully extended position at which a simple stop is provided. The plank members could alternatively be formed of a synthetic plastics or other light weight material. CLAIMS
1. An adjustable length plank comprising a longitudinally extending pair of outer channel members spaced apart by a plurality of upper and lower transverse members located therealong to provide an outer assembly, a further pair of longitudinally extending inner channel members spaced apart by a plurality of further upper and lower members located therealong to provide an inner assembly, each of the inner and outer assemblies having a sheet-form member located at least thereover and the inner assembly being slidably mounted within the outer assembly.
2. An adjustable length plank as Claimed in Claim 1 wherein the inner and outer longitudinally extending members are metallic.
3. An adjustable length plank as claimed in Claim 1 or 2 wherein the sheet-form members comprise chequer aluminium plate extending over and around side edges of the inner and outer longitudinally extending members.
4. An adjustable length plank as claimed in any preceding Claim wherein the outer longitudinally members are U-section and the inner longitudinally members are I-section locating therein.
5. An adjustable length plank substantially as hereinbefore described with reference to Figs. 1 and 2 of the drawing.
GB8612505A 1986-05-22 1986-05-22 Adjustable length plank Expired GB2190934B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8612505A GB2190934B (en) 1986-05-22 1986-05-22 Adjustable length plank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8612505A GB2190934B (en) 1986-05-22 1986-05-22 Adjustable length plank

Publications (3)

Publication Number Publication Date
GB8612505D0 GB8612505D0 (en) 1986-07-02
GB2190934A true GB2190934A (en) 1987-12-02
GB2190934B GB2190934B (en) 1989-12-28

Family

ID=10598295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8612505A Expired GB2190934B (en) 1986-05-22 1986-05-22 Adjustable length plank

Country Status (1)

Country Link
GB (1) GB2190934B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702120A1 (en) * 1994-09-19 1996-03-20 Michel Goubaud Floor element for scaffolding floors
GB2353320A (en) * 1999-08-16 2001-02-21 Karl Dorn Telescopic scaffold board
WO2005014954A1 (en) 2003-08-08 2005-02-17 Karl Dorn Adjustable length plank assembly
GB2443473A (en) * 2006-10-30 2008-05-07 Terry Bodley Telescopic plank or batten for staging or scaffolding

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702120A1 (en) * 1994-09-19 1996-03-20 Michel Goubaud Floor element for scaffolding floors
FR2724679A1 (en) * 1994-09-19 1996-03-22 Goubaud Michel FLOOR ELEMENT FOR SCAFFOLDING PLATE
GB2353320A (en) * 1999-08-16 2001-02-21 Karl Dorn Telescopic scaffold board
WO2005014954A1 (en) 2003-08-08 2005-02-17 Karl Dorn Adjustable length plank assembly
GB2406354B (en) * 2003-08-08 2006-09-27 Karl Dorn Adjustable length plank assembly
GB2443473A (en) * 2006-10-30 2008-05-07 Terry Bodley Telescopic plank or batten for staging or scaffolding

Also Published As

Publication number Publication date
GB8612505D0 (en) 1986-07-02
GB2190934B (en) 1989-12-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040522