Ladder leveler
US6378656B1 · kind B1 · utility
5Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/44
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A ladder leveler is disclosed in which two pivoting arms are mounted on a base plate to provide a self-adjusting and infinitely adjustable device. The two arms cooperate with a movable locking member or tumbler which is mounted between the arms and shaped to permit the arms to self adjust for uneven ground and lock the arms against movement when weight is placed on the ladder. The device may be readily secured to and removed from the base of a ladder without extensive disassembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.