Bunk ladder
US6622822B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2002 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C5/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An adjustable ladder with self-storing features and suitable for installation in the sleeping berth of an over-the-highway tractor. The ladder includes an upper and lower member. The upper member includes first and second side rails and at least one step rung rigidly disposed between the side rails. The first side rail includes a mounting end, an open end, and a center portion. One end of the first and second side rails are rotateably mounted to a mating surface. The lower member includes a first end, a second end, and a center portion extending between the first and second ends. The lower member first end is slideably engaged within the upper member open end to define a ladder length. The length is adjustable over a range by sliding the lower member with respect to the upper member. The range may be from an application length to a stored length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.