GB1333291A - Step ladders - Google Patents
Step laddersInfo
- Publication number
- GB1333291A GB1333291A GB1333291DA GB1333291A GB 1333291 A GB1333291 A GB 1333291A GB 1333291D A GB1333291D A GB 1333291DA GB 1333291 A GB1333291 A GB 1333291A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tread
- runners
- treads
- ladder
- bar
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
1333291 Step ladders STANDARD TELEPHONES & CABLES Ltd 6 Jan 1971 622/71 Heading E1S The treads of a step ladder are slidably mounted in pairs of horizontal runnels 7, 8 secured to the side members (not shown), so that a selected tread, 3 as shown, may be displaced forwardlyof the ladder to form a platform beyond the line of the remaining treads. A stop bar 10 on the underside of the tread engages cross-beams 13, 14 connecting the runners to restrict the travel of the tread, and the tread carries a spring-loaded ball catch at each side edge near the ends of the bar 10 for engagement with holes 18 and 20 or 19 and 21 in the runners to secure the tread. A further fixed tread may be mounted on the pair of runners 7, 8 above the slidable tread, to increase the platform area.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB62271 | 1971-01-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1333291A true GB1333291A (en) | 1973-10-10 |
Family
ID=9707587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1333291D Expired GB1333291A (en) | 1971-01-06 | 1971-01-06 | Step ladders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1333291A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0138569A1 (en) * | 1983-10-14 | 1985-04-24 | William T. Wilkinson | Method and device for simulating climbing |
US4561652A (en) * | 1981-02-17 | 1985-12-31 | Wilkinson William T | Exercising device for simulating climbing |
US4648593A (en) * | 1981-02-17 | 1987-03-10 | Wilkinson William T | Device for simulation of climbing |
GB2408284A (en) * | 2003-11-13 | 2005-05-25 | Alto Tower Systems Ltd | Working platform assembly: guard rail |
CN107120057A (en) * | 2017-05-12 | 2017-09-01 | 贵州宏华农业发展有限公司 | A kind of Agricus blazei picking ladder |
US9777535B1 (en) * | 2017-01-05 | 2017-10-03 | Stentiford Safety Services, Llc | Step adaptor for transitioning between sections of an extension ladder |
CN110725645A (en) * | 2019-09-05 | 2020-01-24 | 国网山东省电力公司临朐县供电公司 | Ladder for cable maintenance |
IT202000014665A1 (en) * | 2020-06-18 | 2021-12-18 | Cnh Ind Italia Spa | IMPROVED WORK VEHICLE LADDER |
-
1971
- 1971-01-06 GB GB1333291D patent/GB1333291A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561652A (en) * | 1981-02-17 | 1985-12-31 | Wilkinson William T | Exercising device for simulating climbing |
US4648593A (en) * | 1981-02-17 | 1987-03-10 | Wilkinson William T | Device for simulation of climbing |
EP0138569A1 (en) * | 1983-10-14 | 1985-04-24 | William T. Wilkinson | Method and device for simulating climbing |
GB2408284A (en) * | 2003-11-13 | 2005-05-25 | Alto Tower Systems Ltd | Working platform assembly: guard rail |
GB2408284B (en) * | 2003-11-13 | 2007-11-07 | Alto Tower Systems Ltd | Working platform assembly |
US9777535B1 (en) * | 2017-01-05 | 2017-10-03 | Stentiford Safety Services, Llc | Step adaptor for transitioning between sections of an extension ladder |
US10012022B1 (en) | 2017-01-05 | 2018-07-03 | Stentiford Safety Services, Llc | Step adaptor for transitioning between sections of an extension ladder |
CN107120057A (en) * | 2017-05-12 | 2017-09-01 | 贵州宏华农业发展有限公司 | A kind of Agricus blazei picking ladder |
CN107120057B (en) * | 2017-05-12 | 2024-07-16 | 南京科智信智能装备有限公司 | Ladder is picked to agaricus blazei murill |
CN110725645A (en) * | 2019-09-05 | 2020-01-24 | 国网山东省电力公司临朐县供电公司 | Ladder for cable maintenance |
IT202000014665A1 (en) * | 2020-06-18 | 2021-12-18 | Cnh Ind Italia Spa | IMPROVED WORK VEHICLE LADDER |
EP3925829A1 (en) * | 2020-06-18 | 2021-12-22 | CNH Industrial Italia S.p.A. | Improved step ladder for a work vehicle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |