Seat structure
US7481493B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Oct 21, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/976
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To promote bloodstream and reduce fatigue, a seat structure makes a slight sitting posture change by adding a minute body motion with no necessity of moving a cushion frame or a seat frame although it realizes a supporting pressure change at a wide area, not locally, in a seat cushion or a seat back. The seat structure includes a cushioning member for a seat cushion stretched across the cushion frame, and a cushioning member for a seat back stretched across the back frame. The seat structure includes: a lower cloth spring of a seat cushion or a cloth spring of a seat back stretched across the cushion frame or the back frame via a torsion bar; and a cloth spring adjusting member to change a supporting pressure by both cushioning members by adjusting tension of the lower cloth spring or the cloth spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.