Adjustment mechanisms, ladders incorporating same and related methods
US11421475B2 · kind B2 · utility
1Cited by
62References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Ladders, ladder components and related methods are provided. In some embodiments, adjustable stepladders are provided which include locking mechanisms that enable height adjustment of the ladder through application of a force towards the rails of the ladder. The locking mechanism may include a base or bracket, a handle or lever pivotally coupled with the bracket, an engagement pin coupled with the lever, a biasing member to bias the handle towards a first position relative to the bracket, and a detent mechanism for retaining the lever in at least a second position relative to the bracket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.