Ladder-mountable device
US4489911A · kind A · utility
15Cited by
5References
10Claims
0Family size
Inventor
Key dates
| Filing date | Feb 22, 1983 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Feb 22, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/143
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device capable of being mounted on a ladder having hollow rungs comprises a platform or tray having a first arm mounted thereon adjacent one end thereof and a second arm pivotably mounted thereon adjacent the other end thereof and extending below the platform or tray, said second arm being adjustable in length and said arms being adapted to enter the hollow rungs of a ladder. In use the first and second arms are inserted in separate rungs of the ladder, the second arm being inserted in the rung below the first arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.