Oil cylindrical rotational damper
US6662683B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | May 8, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2230/0047
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A damper is provided having an assist grip into which the damper is built. The damper includes a housing having an inner cylinder and an outer cylinder which disposed concentrically with each other and an annular space formed between the inner cylinder and the outer cylinder containing a viscous fluid; a cylindrical rotor accommodated in the housing and which receives a damping action from the viscous fluid; a ring-shaped sealing member for preventing viscous fluid leakage; and an annular cap provided independently of the rotor and mounted to the housing, and which retains the rotor and the sealing member in the housing. Another damper is provided that includes a housing which has an annular space containing a viscous fluid, the cylindrical rotor the annular cap, a ring-shaped first sealing member disposed between the rotor and the cap, and another ring-shaped second sealing member disposed between the rotor and the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.