GB1283934A - Improvements relating to metal ladders - Google Patents
Improvements relating to metal laddersInfo
- Publication number
- GB1283934A GB1283934A GB2138/70A GB213870A GB1283934A GB 1283934 A GB1283934 A GB 1283934A GB 2138/70 A GB2138/70 A GB 2138/70A GB 213870 A GB213870 A GB 213870A GB 1283934 A GB1283934 A GB 1283934A
- Authority
- GB
- United Kingdom
- Prior art keywords
- improvements relating
- tabs
- ladders
- metal ladders
- ribs
- 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
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/082—Connections between rungs or treads and longitudinal members
- E06C7/084—Rungs comprising projecting tabs or flanges
-
- 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
- E06C7/082—Connections between rungs or treads and longitudinal members
- E06C7/085—Connections between rungs or treads and longitudinal members achieved by deforming the rung or the stile
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2138/70A GB1283934A (en) | 1970-01-16 | 1970-01-16 | Improvements relating to metal ladders |
US23738A US3638759A (en) | 1970-01-16 | 1970-03-30 | Metal ladders |
DE19702029743 DE2029743A1 (de) | 1970-01-16 | 1970-06-16 | Metalleiter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2138/70A GB1283934A (en) | 1970-01-16 | 1970-01-16 | Improvements relating to metal ladders |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1283934A true GB1283934A (en) | 1972-08-02 |
Family
ID=9734268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2138/70A Expired GB1283934A (en) | 1970-01-16 | 1970-01-16 | Improvements relating to metal ladders |
Country Status (3)
Country | Link |
---|---|
US (1) | US3638759A (de) |
DE (1) | DE2029743A1 (de) |
GB (1) | GB1283934A (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3970400A (en) * | 1973-07-09 | 1976-07-20 | Robert John Reid | Deformingly interlocked structural joint |
DE2535533C2 (de) | 1975-08-08 | 1983-10-06 | Koweko AG, St.Gallen | Durch Strangpressen hergestellter Längsholm aus Leichtmetall für Leitern |
DE2910617C2 (de) * | 1979-03-17 | 1981-07-16 | Hailo-Werk Rudolf Loh Gmbh & Co Kg, 6342 Haiger | Leiter mit Stufen und zwei Längsholmen |
DE2910618C2 (de) * | 1979-03-17 | 1981-06-19 | Hailo-Werk Rudolf Loh Gmbh & Co Kg, 6342 Haiger | Leiter mit Stufen und zwei Längsholmen |
DE3065120D1 (en) * | 1979-04-05 | 1983-11-10 | William Bailey | Method of and apparatus for forming a joint between a step and a stile of a ladder |
US4655320A (en) * | 1984-12-14 | 1987-04-07 | Benboid Pty Ltd. | Ladder means and method of production |
US5180031A (en) * | 1990-12-11 | 1993-01-19 | Smith Daniel S | Gardener's aid for sloped ground |
US6899213B1 (en) * | 2000-10-20 | 2005-05-31 | Lankfer Diversified Industries, Inc. | Brake-transmission interlock device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US944000A (en) * | 1908-08-01 | 1909-12-21 | Heinrich Schoenich | Ladder. |
GB497082A (en) * | 1936-03-13 | 1938-12-05 | Heinrich Wuester Jun | Improved process of manufacturing step-ladders and so forth |
US2957543A (en) * | 1956-05-23 | 1960-10-25 | White Metal Rolling & Stamping | Extension ladders |
US3279051A (en) * | 1965-04-05 | 1966-10-18 | Minshall Aubrey Wilson | Method of forming a joint between a metal rail and a hollow metal rung |
-
1970
- 1970-01-16 GB GB2138/70A patent/GB1283934A/en not_active Expired
- 1970-03-30 US US23738A patent/US3638759A/en not_active Expired - Lifetime
- 1970-06-16 DE DE19702029743 patent/DE2029743A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
US3638759A (en) | 1972-02-01 |
DE2029743A1 (de) | 1971-07-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |