Step stool
US5762163A · kind A · utility
48Cited by
13References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Aug 22, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C1/393
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to platform step stools wherein a top step of the stool is movable from its top position to a position in alignment with the step below it to provide for a wider platform than a single step and in particular, to a particular single handle actuated locking mechanism for securing the top step both in its top and alignment height positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.