Ladder positioning system
US6805221B1 · kind B1 · utility
10Cited by
11References
7Claims
0Family size
Inventor
Key dates
| Filing date | Mar 19, 2003 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Mar 19, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/48
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A ladder has side rails with rungs and lower eye-bolts extending from the side rails. A bracket is couplable to a building to be painted or maintained with upper eye-bolts. A pair of turnbuckles have central sections, upper end sections and lower end sections. A pair of J-shaped hooks have lower ends. The lower ends are coupled to the upper ends of the turnbuckle. An upper hook-shaped end is removably coupled to an upper eye-bolt. A pair of short chains has upper ends threadedly coupled to the lower end of the turnbuckle. A lower hook-shaped end is removably coupled to a lower eye-bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.