NL7709177A - Ladder with flat treads - has rungs fixed to uprights by blocks inside ends of extruded sections and held by self tapping screws - Google Patents

Ladder with flat treads - has rungs fixed to uprights by blocks inside ends of extruded sections and held by self tapping screws

Info

Publication number
NL7709177A
NL7709177A NL7709177A NL7709177A NL7709177A NL 7709177 A NL7709177 A NL 7709177A NL 7709177 A NL7709177 A NL 7709177A NL 7709177 A NL7709177 A NL 7709177A NL 7709177 A NL7709177 A NL 7709177A
Authority
NL
Netherlands
Prior art keywords
uprights
ladder
held
tapping screws
self tapping
Prior art date
Application number
NL7709177A
Other languages
Dutch (nl)
Original Assignee
Schneider Friedrich
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 Schneider Friedrich filed Critical Schneider Friedrich
Priority to NL7709177A priority Critical patent/NL7709177A/en
Publication of NL7709177A publication Critical patent/NL7709177A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

The ladder has flat treads made from extruded aluminium sections. These are fixed to the uprights (1) and maintained at the correct angle by means of shaped blocks fitting into the ends of each section and held by self tapping screws. The treads (7) have a ribbed upper surface (8), their long sides being turned downwards to form flanges. The blocks have a main body (4) shaped the full width of the tread and two forwards projecting wings (56). These are inserted inside the flanges, butting against the block. Each screw (14) cuts its thread into a split tubular section forming part of the tread ends.
NL7709177A 1977-08-19 1977-08-19 Ladder with flat treads - has rungs fixed to uprights by blocks inside ends of extruded sections and held by self tapping screws NL7709177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7709177A NL7709177A (en) 1977-08-19 1977-08-19 Ladder with flat treads - has rungs fixed to uprights by blocks inside ends of extruded sections and held by self tapping screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7709177A NL7709177A (en) 1977-08-19 1977-08-19 Ladder with flat treads - has rungs fixed to uprights by blocks inside ends of extruded sections and held by self tapping screws

Publications (1)

Publication Number Publication Date
NL7709177A true NL7709177A (en) 1979-02-21

Family

ID=19829034

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7709177A NL7709177A (en) 1977-08-19 1977-08-19 Ladder with flat treads - has rungs fixed to uprights by blocks inside ends of extruded sections and held by self tapping screws

Country Status (1)

Country Link
NL (1) NL7709177A (en)

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BV The patent application has lapsed