NL7701914A - Folding ladder with flexible uprights - has U-section rungs with diverging arms leaving space for rope - Google Patents

Folding ladder with flexible uprights - has U-section rungs with diverging arms leaving space for rope

Info

Publication number
NL7701914A
NL7701914A NL7701914A NL7701914A NL7701914A NL 7701914 A NL7701914 A NL 7701914A NL 7701914 A NL7701914 A NL 7701914A NL 7701914 A NL7701914 A NL 7701914A NL 7701914 A NL7701914 A NL 7701914A
Authority
NL
Netherlands
Prior art keywords
rungs
rope
folding ladder
section
leaving space
Prior art date
Application number
NL7701914A
Other languages
Dutch (nl)
Original Assignee
Wilhelm Luckey
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 Wilhelm Luckey filed Critical Wilhelm Luckey
Priority to NL7701914A priority Critical patent/NL7701914A/en
Publication of NL7701914A publication Critical patent/NL7701914A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/52—Ladders in general with non-rigid longitudinal members
    • E06C1/56—Rope or chain ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/14—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with non-rigid longitudinal members, e.g. rope or chain ladders, ladders of the lazy-tongs type

Landscapes

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

Abstract

The folding ladder is of non-combustible material, having a number of U-section rungs mounted on ropes, strips etc. The rungs are stacked on top of each other so as to leave between them a space accommodating the intervening lengths of rope. The two arms (5,6) of the U-section diverge from the tread surface (7), so as to straddle those of the rung below, and the lengths of rope etc are accommodated in a single space. The rungs may be curved upwards at the ends. The rungs can be of aluminium plate or sheet of less than 1 mm thickness.
NL7701914A 1977-02-23 1977-02-23 Folding ladder with flexible uprights - has U-section rungs with diverging arms leaving space for rope NL7701914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7701914A NL7701914A (en) 1977-02-23 1977-02-23 Folding ladder with flexible uprights - has U-section rungs with diverging arms leaving space for rope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7701914A NL7701914A (en) 1977-02-23 1977-02-23 Folding ladder with flexible uprights - has U-section rungs with diverging arms leaving space for rope

Publications (1)

Publication Number Publication Date
NL7701914A true NL7701914A (en) 1978-08-25

Family

ID=19828037

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7701914A NL7701914A (en) 1977-02-23 1977-02-23 Folding ladder with flexible uprights - has U-section rungs with diverging arms leaving space for rope

Country Status (1)

Country Link
NL (1) NL7701914A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed