US20080093170A1 - Scaffolding Board With Detachable Hook Fitting - Google Patents

Scaffolding Board With Detachable Hook Fitting Download PDF

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Publication number
US20080093170A1
US20080093170A1 US11/659,872 US65987205A US2008093170A1 US 20080093170 A1 US20080093170 A1 US 20080093170A1 US 65987205 A US65987205 A US 65987205A US 2008093170 A1 US2008093170 A1 US 2008093170A1
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US
United States
Prior art keywords
section
fitting
scaffolding board
hooks
board according
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
Application number
US11/659,872
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English (en)
Inventor
Borge Krogstrup
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.)
PF Management Holding ApS
Original Assignee
PF Management Holding ApS
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 PF Management Holding ApS filed Critical PF Management Holding ApS
Assigned to PF MANAGEMENT HOLDING APS reassignment PF MANAGEMENT HOLDING APS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KROGSTRUP, BORGE
Publication of US20080093170A1 publication Critical patent/US20080093170A1/en
Abandoned 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
    • E04G1/154—Non-detachably fixed and secured connections between platform and scaffold
    • 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

Definitions

  • the present invention concerns a scaffolding board including a section with a substantially flat surface for persons staying on this surface, and including a fitting with hooks at the end of the section for securing the assembled scaffolding board on a transverse beam, where the fitting includes at least one lug, and where the section includes at least one opening spaced apart from the end of the section for accommodating a lug in the opening, and where the fitting furthermore includes a flat part between the at least one lug and the hooks for bearing against the underside of the section.
  • Scaffolding boards of the type with a board surface, which has a downwards facing L-shaped side member at each longitudinal side for substantially constituting a total C-shaped cross-section, are known. Such a scaffolding board is shown on FIG. 1 .
  • GB-A-1 400 973 it is known with a scaffolding board of the type mentioned in the introduction.
  • the scaffolding boards described in this publication are held in place as the fitting is saddle-shaped, so that it is symmetric at both sides of the transverse beam and thereby loaded on both sides of the transverse beam. If one scaffolding board is removed, the weight on one side of the transverse beam will cause the fitting to be twisted about the transverse beam, and in the worst case, the lug may be twisted out of the opening. This constitutes a hazard and is therefore a drawback which is connected with the prior art scaffolding board.
  • a scaffolding board of the kind mentioned in the introduction which is peculiar in that the opening is provided in the surface, and that the lug is resting on the edge of the opening.
  • the making of such a scaffolding board is simple and requires fewer resources than by prior art scaffolding boards, which is described more closely in the following.
  • the section of the scaffolding board can be made in long runs, e.g. by extrusion, and adapted to the correct length for scaffolding boards.
  • the scaffolding boards may optionally be provided with a pattern of holes and projections in order to reduce weight and to prevent people walking on the scaffolding board from slipping on the surface.
  • Fittings can be made separately, with hooks on one side of a flat part and lugs on the other side of the flat part. These fittings are passed into the end of the section, and the lugs are provided in corresponding openings in the section.
  • the fitting has typically two lugs, and the section has two corresponding openings for receiving the two lugs.
  • the fitting has an angular part which is rectangular in relation to the flat part in order to at least partly cover the end of the section.
  • the hooks may be fastened to this angular part. This measure makes the fitting very stable in transverse direction, and the mounting is very simple.
  • the section includes a pair of sectional side members, and the fitting includes a pair of side pieces for bearing against the inner side of the side members of the section.
  • the side members of the section can be provided with means for a fixing device for fixing the fitting in relation to the section.
  • the means for a fixing device may include holes for accommodating screw bolts in the holes.
  • the fitting and the section will typically each have two holes for accommodating screw bolts in the holes. Two bolts in each end are only half as many screw bolts or screws traditionally used in scaffolding boards according to prior art. This means saving of time and costs compared with prior art. Besides, this entails that the scaffolding board achieves stability against outwards bending of the side members under load from above.
  • the fixing device may include a snap lock, where a resilient safety tab is acting as a barb against separation of the fitting from the section. This form in particular ensures very rapid assembly of the scaffolding board.
  • the section has a surface which is connected with L-shaped side members at a right angle from the surface in order to constitute an edged C-section.
  • Such C-sections are easy to make and suited as scaffolding boards.
  • the openings for the lugs may have an edge which is lowered under the level of the surface so that the lugs, after being received in the openings, do not substantially project above the level of the scaffolding board.
  • the fitting may furthermore include a plate which is pivotably connected to the fitting and which, after placing the hooks on a beam, by action may engage under the beam and prevent that the hooks can be lifted off the beam.
  • the invention provides for a number of advantages which are not described in the prior art to the same extent.
  • the advantages include simple construction, rapid and easy assembly and separation, fewer components, good load distribution between fitting and section, and increased security during use.
  • FIG. 1 shows a drawing of a scaffolding board according to prior art in various perspective views
  • FIG. 2 shows a drawing of a scaffolding board according to the invention in three perspective views
  • FIG. 3 shows a photo of two scaffolding boards according to the invention as seen from above and from below.
  • FIG. 1 On FIG. 1 is shown a draughting of a scaffolding board 1 according to prior art in three different perspective views, namely as cross-section 1 , longitudinal section and as seen from above.
  • the board has a board surface 2 two downwards facing L-shaped sections as side members 3 with back 5 and bottom flange 6 in order thereby to constitute an assembled and more or less sharp-edged C-shaped cross-section.
  • Scaffolding boards are typically provided with holes 4 so that dust and rain do not accumulate on the surface 2 .
  • a set of hooks 9 which grip in over transverse scaffolding beams 10 , are fastened by means of rivets or screws 7 and suitable fittings 8 . Assembling the scaffolding board during manufacturing requires several steps, where several fittings 8 and several screws 7 are assembled into a unit.
  • each set of hooks 9 are welded onto a fitting 11 which is fastened to the scaffolding board 1 .
  • FIG. 2A shows one end of the scaffolding board as seen towards this end
  • FIG. 2B shows the end of the scaffolding board as seen from the side
  • FIG. 2C a part of the scaffolding board seen obliquely from below.
  • FIG. 3 photos of scaffolding boards according to the invention are shown on FIG. 3 , from above in FIG. 3A and from below in FIG. 3B .
  • the fitting 11 has a flat part 16 which is seen best on FIG. 2C and which after mounting is bearing on the underside 17 of the C-section 1 ′ and an angular part 18 on which the hooks 9 are welded.
  • the fitting 11 furthermore includes a set of curving lugs 13 in continuation of the flat part 16 for engaging corresponding openings 12 in the surface of the scaffolding board 2 .
  • the fitting 11 with the hooks 9 is inserted in the end of the C-section 1 ′ of the scaffolding board at an angle, where the hooks 9 are pointing obliquely downwards in relation to the C-section 1 ′.
  • a down-wards directed load on the scaffolding board 1 after mounting with the hooks 9 on respective beams only entails a load on the lugs 13 in the openings 12 , but no load on possible screws, bolts or other fittings, as known from prior art.
  • the C-section 1 ′ and the fitting 11 are, however, only provided with a fixing device, in this case holes 14 , 14 ′ in the side members 3 of the section 1 ′, see FIG. 2B , and in the corresponding side pieces 19 of the fitting 11 , see FIG. 2C , in which bolts may be fastened.
  • This fixing device may also be achieved with self-tapping screws, or even with a snap lock where a resilient safety tab can act as a barb against separation of the two assembled parts, i.e. the C-section 1 ′ and the fitting 11 .
  • a snap lock may minimise the assembling time for the board.
  • the dimensioning is not critical. Moreover, loosing a bolt or a screw through the holes 14 , 14 ′ will not imply any hazard, as the scaffolding plank will still be intact and fulfil its function without risk to the workers walking on the board.
  • the part 15 of the opening 12 where the lug 13 engages the surface 2 of the scaffolding board may be recessed.
  • the fitting may be slid into the end of the C-shaped section 1 ′ of the scaffolding board until the lugs 13 engage the recessed part of the opening 12 .
  • the top side of the lugs 13 would be at level with the top side 2 of the scaffolding board.
  • the height of the fitting 11 may be adapted to the inner height of the C-section, as there is no need for tilting the fitting 11 during assembly. Furthermore, it will provide a good distribution of the forces under load from above. In that case also there will be no load on the fixing device, e.g. bolts or screws through the holes 14 , 14 ′, or alternatively a snap lock.
  • the fixing device e.g. bolts or screws through the holes 14 , 14 ′, or alternatively a snap lock.
  • the scaffolding board 1 is provided with projections and holes as shown on FIG. 3A and the projections have a height approximately corresponding to the height of the lug 13 when this is provided in the opening 12 , these openings will provide for the lug not acting as an edge that is easily walked over.
  • the scaffolding boards may be provided with a safety device so that the hooks are retained around a beam on which they rest.
  • the safety device is a plate which is pivotably connected to the fitting, and which by correct positioning grips in under the beam and prevents the hooks from being lifted off the beam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Ladders (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Emergency Lowering Means (AREA)
  • Stringed Musical Instruments (AREA)
  • Electric Cable Installation (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
US11/659,872 2004-08-11 2005-08-11 Scaffolding Board With Detachable Hook Fitting Abandoned US20080093170A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK200401214A DK176257B1 (da) 2004-08-11 2004-08-11 Stilladsplanke med aftageligt krogbeslag
DKPA200401214 2004-08-11
PCT/DK2005/000526 WO2006015602A1 (en) 2004-08-11 2005-08-11 Scaffolding board with detachable hook fitting

Publications (1)

Publication Number Publication Date
US20080093170A1 true US20080093170A1 (en) 2008-04-24

Family

ID=35839150

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/659,872 Abandoned US20080093170A1 (en) 2004-08-11 2005-08-11 Scaffolding Board With Detachable Hook Fitting

Country Status (9)

Country Link
US (1) US20080093170A1 (no)
EP (1) EP1797255B1 (no)
AT (1) ATE445060T1 (no)
CA (1) CA2576420A1 (no)
DE (1) DE602005017064D1 (no)
DK (1) DK176257B1 (no)
HK (1) HK1099354A1 (no)
NO (1) NO338025B1 (no)
WO (1) WO2006015602A1 (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200224437A1 (en) * 2017-07-12 2020-07-16 Johnny Curtis Latchable scaffold planks

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK176973B1 (da) * 2008-03-10 2010-08-16 Pf Man Holding Aps Stilladsplanke med overdækket krog
EP2255046A1 (en) * 2008-03-19 2010-12-01 Marcegaglia Buildtech S.R.L Metal board for scaffolding and method of manufacturing the same
CN111622480A (zh) * 2020-05-31 2020-09-04 邹龙龙 一种电力工程用具有防滑结构的脚手架定位装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558179A (en) * 1992-11-05 1996-09-24 Matthews; Leroy Plank support jacket
US6076991A (en) * 1996-05-17 2000-06-20 Safway Steel Products, Inc. End cap system for scaffolding planks
US6223857B1 (en) * 1999-10-28 2001-05-01 Steven J. Wyse Scaffolding platform
US6471003B2 (en) * 2001-01-19 2002-10-29 Steven J. Wyse Utility scaffolding having safety features
US6530456B1 (en) * 1999-04-09 2003-03-11 Pluseight Technology Ab Locking device for scaffolding elements

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE363658B (no) * 1972-03-08 1974-01-28 Haefla Bruks Ab
FR2690188B1 (fr) * 1992-04-17 1995-09-15 Edac Planche d'echafaudage metallique.
DE19858970A1 (de) * 1998-12-19 2000-06-21 Layher W Vermogensverw Gmbh Metall-Laufplanke
NO319365B1 (no) * 2003-11-12 2005-07-18 Rh Products Int As Gulvelement for stillas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558179A (en) * 1992-11-05 1996-09-24 Matthews; Leroy Plank support jacket
US6076991A (en) * 1996-05-17 2000-06-20 Safway Steel Products, Inc. End cap system for scaffolding planks
US6530456B1 (en) * 1999-04-09 2003-03-11 Pluseight Technology Ab Locking device for scaffolding elements
US6223857B1 (en) * 1999-10-28 2001-05-01 Steven J. Wyse Scaffolding platform
US6471003B2 (en) * 2001-01-19 2002-10-29 Steven J. Wyse Utility scaffolding having safety features

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200224437A1 (en) * 2017-07-12 2020-07-16 Johnny Curtis Latchable scaffold planks

Also Published As

Publication number Publication date
NO338025B1 (no) 2016-07-25
DE602005017064D1 (de) 2009-11-19
DK176257B1 (da) 2007-05-07
WO2006015602A1 (en) 2006-02-16
EP1797255B1 (en) 2009-10-07
NO20070853L (no) 2007-02-14
DK200401214A (da) 2006-02-12
ATE445060T1 (de) 2009-10-15
CA2576420A1 (en) 2006-02-16
HK1099354A1 (en) 2007-08-10
EP1797255A1 (en) 2007-06-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PF MANAGEMENT HOLDING APS, DENMARK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KROGSTRUP, BORGE;REEL/FRAME:019852/0355

Effective date: 20070129

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION