HK20284A - Improvements in ladders - Google Patents
Improvements in laddersInfo
- Publication number
- HK20284A HK20284A HK20284A HK20284A HK20284A HK 20284 A HK20284 A HK 20284A HK 20284 A HK20284 A HK 20284A HK 20284 A HK20284 A HK 20284A HK 20284 A HK20284 A HK 20284A
- Authority
- HK
- Hong Kong
- Prior art keywords
- ladders
- Prior art date
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
- E06C7/426—Height adjustable supports for receiving both ladder feet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/970,967 US4243122A (en) | 1977-01-06 | 1978-12-19 | Ladders leveling device |
Publications (1)
Publication Number | Publication Date |
---|---|
HK20284A true HK20284A (en) | 1984-03-16 |
Family
ID=25517767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK20284A HK20284A (en) | 1978-12-19 | 1984-03-08 | Improvements in ladders |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2037357B (en) |
HK (1) | HK20284A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456095A (en) * | 1981-01-02 | 1984-06-26 | Milba Properties Pty. Ltd. | Levelling device for ladders |
GB2142076A (en) * | 1983-06-22 | 1985-01-09 | David John Roberts | Ladder support |
GB8407232D0 (en) * | 1984-03-20 | 1984-04-26 | Cox A | Ladder steadying arrangement |
FR2621952B1 (en) * | 1987-10-14 | 1990-12-14 | Fameca Sa | LEVEL COMPENSATOR FOR LADDER |
GB2232710A (en) * | 1989-06-14 | 1990-12-19 | Michael James * Kitson | Device for stabilizing a ladder |
WO1991014850A1 (en) * | 1990-03-20 | 1991-10-03 | Keith Edward Wright | Ladder support device |
GB0023292D0 (en) | 2000-09-22 | 2000-11-08 | Surefoot Ltd | Self-levelling support |
GB2441335B (en) | 2006-08-29 | 2011-08-10 | Steven Le Masurier | A safety device |
-
1979
- 1979-12-11 GB GB7942580A patent/GB2037357B/en not_active Expired
-
1984
- 1984-03-08 HK HK20284A patent/HK20284A/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB2037357A (en) | 1980-07-09 |
GB2037357B (en) | 1982-11-17 |
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