Rotational variable torque damper for a seat assembly for a vehicle
US8408629B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2010 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Jun 3, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/145
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A variable torque rotary damper for a vehicle seat comprises a housing defining a non-uniform chamber for retaining therein a viscous fluid. A rotor has an axial portion extending at least partially into the chamber and a resistive portion extending radially from the axial portion for moving through the viscous fluid within the chamber. When torque is applied to the rotor resulting in rotation of the resistive portion through the viscous fluid, a resistant force being applied by the viscous fluid on the resistive portion increases or decreases proportionally relative to a position of the resistive portion within the non-uniform chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.