Access ladder assembly for a movable machine
US10036201B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2017 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Nov 15, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C5/36
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An access ladder assembly for a machine includes a fixed section, a movable section, a biasing member, a locking member, and a release assembly. The fixed section includes a pair of guide members and a fixed step. The movable section is mounted on and is movable along the fixed section between extended and retracted positions. The movable section includes a pair of sidewalls, and at least one horizontal step and is biased towards the retracted position by the biasing member. The locking member locks the movable member at the extended position. The release assembly operates to release the locking member. A manually engagable actuator of the release assembly may be disposed adjacent the fixed step. The movable section may include rails that slide within a hollow portions of the guide members as the movable section moves between the extended and retracted positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.