Adjustable lumbar support for a vehicle seat
US10668842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2018 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Aug 16, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/462
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A lumbar support device for a vehicle seat permits vertical and fore-aft adjustment of the support or forces exerted on the back of an operator seated on the vehicle seat. The lumbar support device includes a lumbar panel resiliently flexibly attached to the seat frame and/or seat shell to permit fore and aft movement of the lumbar panel relative to the seat back, the lumbar panel arranged to bear against the seat back, and a cam element having a cam surface bearing against the lumbar panel to apply force to the lumbar panel toward the seat back, the cam element supported on the seat frame and/or seat shell for movement relative to the lumbar panel and relative to the seat shell and/or seat frame, the cam element configured to vary the force applied to the seat back based on the movement of the cam element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.