Bilateral, warp-tolerant, cross-synchronized, gear-lock adjustable seat structure
US6966605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Aug 18, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/433
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat structure with two, lateral-side latching-unlatching mechanisms for enabling smoothly operating releasable locking and unlocking actions between a seat-base and an inclinable seat-back hinged to the seat-base in the seat structure. Two interengageable arcs of gear teeth forming part of each mechanism engage and release selectively under rocker-lever seat-occupant control to lock and unlock the seat-back for inclinational fixation and adjustment, and, as determined by tooth-pitch in the arcs, enable positive locking to take place in a large number of specific, small-angular-difference, seat-back inclinations. A floating cross-shaft, and two rocker cams joined thereto, interconnect the two lateral side mechanisms. The seat-base is fully twist-deformable in a catastrophic event replicating a conventional rack-and-roll test without the seat-back becoming unlocked relative to the seat-base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.