Step stool
US8684139B2 · kind B2 · utility
13Cited by
20References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2009 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | May 29, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/083
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A step tool has front and rear leg tubes, a bottom and top footplate, a connection device for connecting the footplate and the leg tubes, a lock catch device of the top footplate. The front leg tubes are joined to the rear leg tubes rotatablely. The foreside of the top footplate joins to the front leg tubes rotatablely. A rail is fixed on the rear leg tubes. The lock catch is disposed on the top footplate and is detachly connected to the rail. The lock catch device includes two connecting ears, a rotation axis, a lock catch and a torsion spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.