FR781633A - Marchepied s'ajustant automatiquement - Google Patents
Marchepied s'ajustant automatiquementInfo
- 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
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)
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2889099A (en) * | 1955-04-01 | 1959-06-02 | M W P Appliances Inc | Ladder construction |
-
1933
- 1933-07-31 US US682975A patent/US1982172A/en not_active Expired - Lifetime
-
1934
- 1934-11-12 GB GB32579/34A patent/GB427950A/en not_active Expired
- 1934-11-21 FR FR781633D patent/FR781633A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1982172A (en) | 1934-11-27 |
| GB427950A (en) | 1935-05-02 |
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