Non-newtonian stress thickening fluid vibration damper system for vehicle seat
US8590966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Jan 4, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/897
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vibration damper for a vehicle seat back is disclosed. The vibration damper includes an enclosure provided inside the upper end of a vehicle seat back. The enclosure includes a plurality of projections, preferably in the form of spaced apart, vertically extending pins, extending from one or more interior walls of the enclosure. A non-newtonian stress thickening fluid is provided within the enclosure. When the seat back is at rest the stress thickening fluid is free flowing within the enclosure. When the seat back is moved the stress thickening fluid is acted upon by the walls of the enclosure, the internally mounted pins, or both. As the walls and pins push on the fluid it comes under shear stress which causes the fluid to harden. As the pins pass through the hardened fluid they absorb energy and dampen the motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.