FR2376940A1 - Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation - Google Patents

Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation

Info

Publication number
FR2376940A1
FR2376940A1 FR7700952A FR7700952A FR2376940A1 FR 2376940 A1 FR2376940 A1 FR 2376940A1 FR 7700952 A FR7700952 A FR 7700952A FR 7700952 A FR7700952 A FR 7700952A FR 2376940 A1 FR2376940 A1 FR 2376940A1
Authority
FR
France
Prior art keywords
rungs
stringers
ribs
protruding
tubular
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.)
Withdrawn
Application number
FR7700952A
Other languages
French (fr)
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.)
Fabriscal SA Ets Genries
Original Assignee
Fabriscal SA Ets Genries
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 Fabriscal SA Ets Genries filed Critical Fabriscal SA Ets Genries
Priority to FR7700952A priority Critical patent/FR2376940A1/en
Priority to FR7716630A priority patent/FR2392214A2/en
Priority to DE19782800793 priority patent/DE2800793A1/en
Publication of FR2376940A1 publication Critical patent/FR2376940A1/en
Withdrawn legal-status Critical Current

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 safety ladder has tubular rungs fixed to the stringers so that they cannot rotate. The stringers (1) are fitted with a rib (2), or more than one, on the inside of their walling sections, protruding into the tubular space, or they fit securely on pre-formed or previously work-end ends on the rungs (3). The rungs are fixed by screw bolts (5) or plug pins passing through the profiled walling on the stringer. The ribs may be in pairs, with the ends of the rungs engaging between them. There may be a third intermediate rib, engaging a recess in the end of the rung.
FR7700952A 1977-01-10 1977-01-10 Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation Withdrawn FR2376940A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7700952A FR2376940A1 (en) 1977-01-10 1977-01-10 Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation
FR7716630A FR2392214A2 (en) 1977-01-10 1977-05-24 Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation
DE19782800793 DE2800793A1 (en) 1977-01-10 1978-01-09 SECURITY MANAGER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7700952A FR2376940A1 (en) 1977-01-10 1977-01-10 Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation

Publications (1)

Publication Number Publication Date
FR2376940A1 true FR2376940A1 (en) 1978-08-04

Family

ID=9185468

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7700952A Withdrawn FR2376940A1 (en) 1977-01-10 1977-01-10 Safety ladder with tubular rungs - has ribs on stringers protruding into rungs with bolts to prevent rotation

Country Status (1)

Country Link
FR (1) FR2376940A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse