FR2439867A1 - Manufacture of tubular ladders - has rectangular section posts with step tapered plugs in round section press fitted rungs - Google Patents

Manufacture of tubular ladders - has rectangular section posts with step tapered plugs in round section press fitted rungs

Info

Publication number
FR2439867A1
FR2439867A1 FR7830695A FR7830695A FR2439867A1 FR 2439867 A1 FR2439867 A1 FR 2439867A1 FR 7830695 A FR7830695 A FR 7830695A FR 7830695 A FR7830695 A FR 7830695A FR 2439867 A1 FR2439867 A1 FR 2439867A1
Authority
FR
France
Prior art keywords
rung
longeron
rungs
tail
plug
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
FR7830695A
Other languages
French (fr)
Other versions
FR2439867B1 (en
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 FR7830695A priority Critical patent/FR2439867A1/en
Publication of FR2439867A1 publication Critical patent/FR2439867A1/en
Application granted granted Critical
Publication of FR2439867B1 publication Critical patent/FR2439867B1/fr
Granted 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

Abstract

The ladder is fabricated from hollow rectangular section longerons (3) and round hollow section rungs (2) in elastic material. It has tapered rung end plugs (13) to effect a wedged and glued (10) joint. The plugs have co-axial cylindrical leading (15) and tail (18) lengths separated by a tapered section (17). The former length is of a lesser dia. and leads the plug into the rung. The two lengths may be of a nominally lesser dia. and a nominally greater dia. respectively than the longeron bore. The end of the rung has a smooth cylindrical barrel length, and the longeron has an internal face opening (8) with milled edges. Joint assembly includes placing the adhesive coated plug in the rung end with the tail length (18) projecting. The tail is then placed in the longeron, and the longeron pushed towards the rung, until the plug is driven home.
FR7830695A 1978-10-24 1978-10-24 Manufacture of tubular ladders - has rectangular section posts with step tapered plugs in round section press fitted rungs Granted FR2439867A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7830695A FR2439867A1 (en) 1978-10-24 1978-10-24 Manufacture of tubular ladders - has rectangular section posts with step tapered plugs in round section press fitted rungs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7830695A FR2439867A1 (en) 1978-10-24 1978-10-24 Manufacture of tubular ladders - has rectangular section posts with step tapered plugs in round section press fitted rungs

Publications (2)

Publication Number Publication Date
FR2439867A1 true FR2439867A1 (en) 1980-05-23
FR2439867B1 FR2439867B1 (en) 1981-04-17

Family

ID=9214279

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7830695A Granted FR2439867A1 (en) 1978-10-24 1978-10-24 Manufacture of tubular ladders - has rectangular section posts with step tapered plugs in round section press fitted rungs

Country Status (1)

Country Link
FR (1) FR2439867A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1246630A (en) * 1967-10-04 1971-09-15 William Charles Coombs Assembly of tubular members
FR2200914A5 (en) * 1972-08-25 1974-04-19 Zenhaeusern Heinrich

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1246630A (en) * 1967-10-04 1971-09-15 William Charles Coombs Assembly of tubular members
FR2200914A5 (en) * 1972-08-25 1974-04-19 Zenhaeusern Heinrich

Also Published As

Publication number Publication date
FR2439867B1 (en) 1981-04-17

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Legal Events

Date Code Title Description
ST Notification of lapse