FR781633A - Marchepied s'ajustant automatiquement - Google Patents

Marchepied s'ajustant automatiquement

Info

Publication number
FR781633A
FR781633A FR781633DA FR781633A FR 781633 A FR781633 A FR 781633A FR 781633D A FR781633D A FR 781633DA FR 781633 A FR781633 A FR 781633A
Authority
FR
France
Prior art keywords
self
adjusting step
adjusting
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.)
Expired
Application number
Other languages
English (en)
Inventor
Hansford Jerard Myers
William Augustus Warren
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 filed Critical
Application granted granted Critical
Publication of FR781633A publication Critical patent/FR781633A/fr
Expired 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
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/44—Means for mounting ladders on uneven ground
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
FR781633D 1933-07-31 1934-11-21 Marchepied s'ajustant automatiquement Expired FR781633A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US682975A US1982172A (en) 1933-07-31 1933-07-31 Automatic adjustment for stepladders
GB32579/34A GB427950A (en) 1933-07-31 1934-11-12 Automatic adjustment for step ladders

Publications (1)

Publication Number Publication Date
FR781633A true FR781633A (fr) 1935-05-18

Family

ID=34740765

Family Applications (1)

Application Number Title Priority Date Filing Date
FR781633D Expired FR781633A (fr) 1933-07-31 1934-11-21 Marchepied s'ajustant automatiquement

Country Status (3)

Country Link
US (1) US1982172A (fr)
FR (1) FR781633A (fr)
GB (1) GB427950A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889099A (en) * 1955-04-01 1959-06-02 M W P Appliances Inc Ladder construction

Also Published As

Publication number Publication date
GB427950A (en) 1935-05-02
US1982172A (en) 1934-11-27

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