Extendable rail
US11903510B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | May 18, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47H5/0325
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Provided is an extendable rail, comprising a main rail and an auxiliary rail arranged in parallel with the main rail, the main rail is shifted in longitudinal direction relative to the auxiliary rail, wherein the main rail is configured with a driving wheel and a first reverse wheel; the auxiliary rail is configured with a second reverse wheel, a first guiding wheel and a second guiding wheel arranged inside; a belt loop with fixed length wraps around the driving wheel, the first reverse wheel, the first guiding wheel, the second reverse wheel, the second guiding wheel, and the driving wheel in turn. The total length of the extendable rail can be adjusted according to the practical needs of consumers by adjusting the length of the overlapped area of the main rail and the auxiliary rail, which provides easy adjustment, high universal applicability and operation performance without size customization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.