Retractable ladder assembly
US6789648B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jan 8, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C9/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A retractable ladder assembly for marine applications having a frame and a ladder having a pair of channel members pivotally connected to the frame and extendible there from in a vertical position and in a horizontal position. A plurality of rung members extend between the channel members, and channel extension members are slidably supported in the channel members. A pair of strut connectors have one end pivotally connected to the frame and the other end pivotally connected to the lower ends of the channel extension members. A power actuator is supported by the frame to pivot the channel members between a vertical position and a horizontal position, the channel extension members extending from the upper ends of the channel members in the vertical position and are contained in the channel members in the horizontal position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.